feat grpc: update to grpc 1.53.1

update grpc to 1.53.1
update grpcio/py3 to 1.53.1

Added patches:
    22-grpc-code-output.patch - allow translation of grpc code to internal string type.
    23-max-thread-limitation.patch - to provide interface for settings of thread number limit, as
    grpc::DynamicThreadPool doesn't provide interface to limit thread number anymore.
    24-support_for-non-abort-grpc.patch - generate exception instead of application crash
    25-forkable-destruction-order.patch - correct forkable logic for TimerManager
    27-skip-child-post-fork-operations.patch - allow to skip child post fork operations to exclude UB (used for unified agent only)
    pr33495_fox_nested_fork.patch - fix issues with nested forks
    pr33582_fork_handler.patch - disable fork handler support  if it is not requested intentionally

117 files changed, 9403 insertions, 10053 deletions

diff --git a/contrib/libs/grpc/include/grpcpp/alarm.h b/contrib/libs/grpc/include/grpcpp/alarm.h
index 1b5ddfe840..319fc29f1e 100644
--- a/contrib/libs/grpc/include/grpcpp/alarm.h
+++ b/contrib/libs/grpc/include/grpcpp/alarm.h
@@ -1,20 +1,20 @@
-/*
- *
- * Copyright 2015 gRPC authors.
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
- */
+//
+//
+// Copyright 2015 gRPC authors.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+//
 
 /// An Alarm posts the user-provided tag to its associated completion queue or
 /// invokes the user-provided function on expiry or cancellation.
@@ -24,15 +24,14 @@
 #include <functional>
 
 #include <grpc/grpc.h>
-#include <grpcpp/impl/codegen/completion_queue.h>
-#include <grpcpp/impl/codegen/completion_queue_tag.h>
-#include <grpcpp/impl/codegen/grpc_library.h>
-#include <grpcpp/impl/codegen/time.h>
+#include <grpcpp/completion_queue.h>
+#include <grpcpp/impl/completion_queue_tag.h>
 #include <grpcpp/impl/grpc_library.h>
+#include <grpcpp/support/time.h>
 
 namespace grpc {
 
-class Alarm : private grpc::GrpcLibraryCodegen {
+class Alarm : private grpc::internal::GrpcLibrary {
  public:
   /// Create an unset completion queue alarm
   Alarm();
diff --git a/contrib/libs/grpc/include/grpcpp/channel.h b/contrib/libs/grpc/include/grpcpp/channel.h
index cf7ec3d4bb..1326426eb1 100644
--- a/contrib/libs/grpc/include/grpcpp/channel.h
+++ b/contrib/libs/grpc/include/grpcpp/channel.h
@@ -1,20 +1,20 @@
-/*
- *
- * Copyright 2015 gRPC authors.
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
- */
+//
+//
+// Copyright 2015 gRPC authors.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+//
 
 #ifndef GRPCPP_CHANNEL_H
 #define GRPCPP_CHANNEL_H
@@ -22,13 +22,13 @@
 #include <memory>
 
 #include <grpc/grpc.h>
+#include <grpcpp/completion_queue.h>
 #include <grpcpp/impl/call.h>
-#include <grpcpp/impl/codegen/channel_interface.h>
-#include <grpcpp/impl/codegen/completion_queue.h>
-#include <grpcpp/impl/codegen/config.h>
-#include <grpcpp/impl/codegen/grpc_library.h>
-#include <grpcpp/impl/codegen/sync.h>
+#include <grpcpp/impl/channel_interface.h>
+#include <grpcpp/impl/grpc_library.h>
+#include <grpcpp/impl/sync.h>
 #include <grpcpp/support/client_interceptor.h>
+#include <grpcpp/support/config.h>
 
 struct grpc_channel;
 
@@ -54,7 +54,7 @@ void ChannelResetConnectionBackoff(Channel* channel);
 class Channel final : public grpc::ChannelInterface,
                       public grpc::internal::CallHook,
                       public std::enable_shared_from_this<Channel>,
-                      private grpc::GrpcLibraryCodegen {
+                      private grpc::internal::GrpcLibrary {
  public:
   ~Channel() override;
 
diff --git a/contrib/libs/grpc/include/grpcpp/client_context.h b/contrib/libs/grpc/include/grpcpp/client_context.h
index 74a91e2642..b496328599 100644
--- a/contrib/libs/grpc/include/grpcpp/client_context.h
+++ b/contrib/libs/grpc/include/grpcpp/client_context.h
@@ -1,20 +1,20 @@
-/*
- *
- * Copyright 2015 gRPC authors.
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
- */
+//
+//
+// Copyright 2015 gRPC authors.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+//
 
 /// A ClientContext allows the person implementing a service client to:
 ///
@@ -34,6 +34,485 @@
 #ifndef GRPCPP_CLIENT_CONTEXT_H
 #define GRPCPP_CLIENT_CONTEXT_H
 
-#include <grpcpp/impl/codegen/client_context.h>  // IWYU pragma: export
+#include <map>
+#include <memory>
+#include <util/generic/string.h>
+#include <util/string/cast.h>
+
+#include <grpc/impl/compression_types.h>
+#include <grpc/impl/propagation_bits.h>
+#include <grpc/support/log.h>
+#include <grpcpp/impl/create_auth_context.h>
+#include <grpcpp/impl/metadata_map.h>
+#include <grpcpp/impl/rpc_method.h>
+#include <grpcpp/impl/sync.h>
+#include <grpcpp/security/auth_context.h>
+#include <grpcpp/support/client_interceptor.h>
+#include <grpcpp/support/config.h>
+#include <grpcpp/support/slice.h>
+#include <grpcpp/support/status.h>
+#include <grpcpp/support/string_ref.h>
+#include <grpcpp/support/time.h>
+
+struct census_context;
+struct grpc_call;
+
+namespace grpc {
+class ServerContext;
+class ServerContextBase;
+class CallbackServerContext;
+
+namespace internal {
+template <class InputMessage, class OutputMessage>
+class CallbackUnaryCallImpl;
+template <class Request, class Response>
+class ClientCallbackReaderWriterImpl;
+template <class Response>
+class ClientCallbackReaderImpl;
+template <class Request>
+class ClientCallbackWriterImpl;
+class ClientCallbackUnaryImpl;
+class ClientContextAccessor;
+class ClientAsyncResponseReaderHelper;
+}  // namespace internal
+
+template <class R>
+class ClientReader;
+template <class W>
+class ClientWriter;
+template <class W, class R>
+class ClientReaderWriter;
+template <class R>
+class ClientAsyncReader;
+template <class W>
+class ClientAsyncWriter;
+template <class W, class R>
+class ClientAsyncReaderWriter;
+template <class R>
+class ClientAsyncResponseReader;
+
+namespace testing {
+class InteropClientContextInspector;
+class ClientContextTestPeer;
+}  // namespace testing
+
+namespace internal {
+class RpcMethod;
+template <class InputMessage, class OutputMessage>
+class BlockingUnaryCallImpl;
+class CallOpClientRecvStatus;
+class CallOpRecvInitialMetadata;
+class ServerContextImpl;
+template <class InputMessage, class OutputMessage>
+class CallbackUnaryCallImpl;
+template <class Request, class Response>
+class ClientCallbackReaderWriterImpl;
+template <class Response>
+class ClientCallbackReaderImpl;
+template <class Request>
+class ClientCallbackWriterImpl;
+class ClientCallbackUnaryImpl;
+class ClientContextAccessor;
+}  // namespace internal
+
+class CallCredentials;
+class Channel;
+class ChannelInterface;
+class CompletionQueue;
+
+/// Options for \a ClientContext::FromServerContext specifying which traits from
+/// the \a ServerContext to propagate (copy) from it into a new \a
+/// ClientContext.
+///
+/// \see ClientContext::FromServerContext
+class PropagationOptions {
+ public:
+  PropagationOptions() : propagate_(GRPC_PROPAGATE_DEFAULTS) {}
+
+  PropagationOptions& enable_deadline_propagation() {
+    propagate_ |= GRPC_PROPAGATE_DEADLINE;
+    return *this;
+  }
+
+  PropagationOptions& disable_deadline_propagation() {
+    propagate_ &= ~GRPC_PROPAGATE_DEADLINE;
+    return *this;
+  }
+
+  PropagationOptions& enable_census_stats_propagation() {
+    propagate_ |= GRPC_PROPAGATE_CENSUS_STATS_CONTEXT;
+    return *this;
+  }
+
+  PropagationOptions& disable_census_stats_propagation() {
+    propagate_ &= ~GRPC_PROPAGATE_CENSUS_STATS_CONTEXT;
+    return *this;
+  }
+
+  PropagationOptions& enable_census_tracing_propagation() {
+    propagate_ |= GRPC_PROPAGATE_CENSUS_TRACING_CONTEXT;
+    return *this;
+  }
+
+  PropagationOptions& disable_census_tracing_propagation() {
+    propagate_ &= ~GRPC_PROPAGATE_CENSUS_TRACING_CONTEXT;
+    return *this;
+  }
+
+  PropagationOptions& enable_cancellation_propagation() {
+    propagate_ |= GRPC_PROPAGATE_CANCELLATION;
+    return *this;
+  }
+
+  PropagationOptions& disable_cancellation_propagation() {
+    propagate_ &= ~GRPC_PROPAGATE_CANCELLATION;
+    return *this;
+  }
+
+  uint32_t c_bitmask() const { return propagate_; }
+
+ private:
+  uint32_t propagate_;
+};
+
+/// A ClientContext allows the person implementing a service client to:
+///
+/// - Add custom metadata key-value pairs that will propagated to the server
+///   side.
+/// - Control call settings such as compression and authentication.
+/// - Initial and trailing metadata coming from the server.
+/// - Get performance metrics (ie, census).
+///
+/// Context settings are only relevant to the call they are invoked with, that
+/// is to say, they aren't sticky. Some of these settings, such as the
+/// compression options, can be made persistent at channel construction time
+/// (see \a grpc::CreateCustomChannel).
+///
+/// \warning ClientContext instances should \em not be reused across rpcs.
+/// \warning The ClientContext instance used for creating an rpc must remain
+///          alive and valid for the lifetime of the rpc.
+class ClientContext {
+ public:
+  ClientContext();
+  ~ClientContext();
+
+  /// Create a new \a ClientContext as a child of an incoming server call,
+  /// according to \a options (\see PropagationOptions).
+  ///
+  /// \param server_context The source server context to use as the basis for
+  /// constructing the client context.
+  /// \param options The options controlling what to copy from the \a
+  /// server_context.
+  ///
+  /// \return A newly constructed \a ClientContext instance based on \a
+  /// server_context, with traits propagated (copied) according to \a options.
+  static std::unique_ptr<ClientContext> FromServerContext(
+      const grpc::ServerContextBase& server_context,
+      PropagationOptions options = PropagationOptions());
+  static std::unique_ptr<ClientContext> FromCallbackServerContext(
+      const grpc::CallbackServerContext& server_context,
+      PropagationOptions options = PropagationOptions());
+
+  /// Add the (\a meta_key, \a meta_value) pair to the metadata associated with
+  /// a client call. These are made available at the server side by the \a
+  /// grpc::ServerContext::client_metadata() method.
+  ///
+  /// \warning This method should only be called before invoking the rpc.
+  ///
+  /// \param meta_key The metadata key. If \a meta_value is binary data, it must
+  /// end in "-bin".
+  /// \param meta_value The metadata value. If its value is binary, the key name
+  /// must end in "-bin".
+  ///
+  /// Metadata must conform to the following format:
+  ///
+  ///\verbatim
+  /// Custom-Metadata -> Binary-Header / ASCII-Header
+  /// Binary-Header -> {Header-Name "-bin" } {binary value}
+  /// ASCII-Header -> Header-Name ASCII-Value
+  /// Header-Name -> 1*( %x30-39 / %x61-7A / "_" / "-" / ".") ; 0-9 a-z _ - .
+  /// ASCII-Value -> 1*( %x20-%x7E ) ; space and printable ASCII
+  /// Custom-Metadata -> Binary-Header / ASCII-Header
+  ///\endverbatim
+  ///
+  void AddMetadata(const TString& meta_key, const TString& meta_value);
+
+  /// Return a collection of initial metadata key-value pairs. Note that keys
+  /// may happen more than once (ie, a \a std::multimap is returned).
+  ///
+  /// \warning This method should only be called after initial metadata has been
+  /// received. For streaming calls, see \a
+  /// ClientReaderInterface::WaitForInitialMetadata().
+  ///
+  /// \return A multimap of initial metadata key-value pairs from the server.
+  const std::multimap<grpc::string_ref, grpc::string_ref>&
+  GetServerInitialMetadata() const {
+    GPR_ASSERT(initial_metadata_received_);
+    return *recv_initial_metadata_.map();
+  }
+
+  /// Return a collection of trailing metadata key-value pairs. Note that keys
+  /// may happen more than once (ie, a \a std::multimap is returned).
+  ///
+  /// \warning This method is only callable once the stream has finished.
+  ///
+  /// \return A multimap of metadata trailing key-value pairs from the server.
+  const std::multimap<grpc::string_ref, grpc::string_ref>&
+  GetServerTrailingMetadata() const {
+    // TODO(yangg) check finished
+    return *trailing_metadata_.map();
+  }
+
+  /// Set the deadline for the client call.
+  ///
+  /// \warning This method should only be called before invoking the rpc.
+  ///
+  /// \param deadline the deadline for the client call. Units are determined by
+  /// the type used. The deadline is an absolute (not relative) time.
+  template <typename T>
+  void set_deadline(const T& deadline) {
+    grpc::TimePoint<T> deadline_tp(deadline);
+    deadline_ = deadline_tp.raw_time();
+  }
+
+  /// Trigger wait-for-ready or not on this request.
+  /// See https://github.com/grpc/grpc/blob/master/doc/wait-for-ready.md.
+  /// If set, if an RPC is made when a channel's connectivity state is
+  /// TRANSIENT_FAILURE or CONNECTING, the call will not "fail fast",
+  /// and the channel will wait until the channel is READY before making the
+  /// call.
+  void set_wait_for_ready(bool wait_for_ready) {
+    wait_for_ready_ = wait_for_ready;
+    wait_for_ready_explicitly_set_ = true;
+  }
+
+  /// DEPRECATED: Use set_wait_for_ready() instead.
+  void set_fail_fast(bool fail_fast) { set_wait_for_ready(!fail_fast); }
+
+  /// Return the deadline for the client call.
+  std::chrono::system_clock::time_point deadline() const {
+    return grpc::Timespec2Timepoint(deadline_);
+  }
+
+  /// Return a \a gpr_timespec representation of the client call's deadline.
+  gpr_timespec raw_deadline() const { return deadline_; }
+
+  /// Set the per call authority header (see
+  /// https://tools.ietf.org/html/rfc7540#section-8.1.2.3).
+  void set_authority(const TString& authority) { authority_ = authority; }
+
+  /// Return the authentication context for the associated client call.
+  /// It is only valid to call this during the lifetime of the client call.
+  ///
+  /// \see grpc::AuthContext.
+  std::shared_ptr<const grpc::AuthContext> auth_context() const {
+    if (auth_context_ == nullptr) {
+      auth_context_ = grpc::CreateAuthContext(call_);
+    }
+    return auth_context_;
+  }
+
+  /// Set credentials for the client call.
+  ///
+  /// A credentials object encapsulates all the state needed by a client to
+  /// authenticate with a server and make various assertions, e.g., about the
+  /// client’s identity, role, or whether it is authorized to make a particular
+  /// call.
+  ///
+  /// It is legal to call this only before initial metadata is sent.
+  ///
+  /// \see  https://grpc.io/docs/guides/auth.html
+  void set_credentials(const std::shared_ptr<grpc::CallCredentials>& creds);
+
+  /// EXPERIMENTAL debugging API
+  ///
+  /// Returns the credentials for the client call. This should be used only in
+  /// tests and for diagnostic purposes, and should not be used by application
+  /// logic.
+  std::shared_ptr<grpc::CallCredentials> credentials() { return creds_; }
+
+  /// Return the compression algorithm the client call will request be used.
+  /// Note that the gRPC runtime may decide to ignore this request, for example,
+  /// due to resource constraints.
+  grpc_compression_algorithm compression_algorithm() const {
+    return compression_algorithm_;
+  }
+
+  /// Set \a algorithm to be the compression algorithm used for the client call.
+  ///
+  /// \param algorithm The compression algorithm used for the client call.
+  void set_compression_algorithm(grpc_compression_algorithm algorithm);
+
+  /// Flag whether the initial metadata should be \a corked
+  ///
+  /// If \a corked is true, then the initial metadata will be coalesced with the
+  /// write of first message in the stream. As a result, any tag set for the
+  /// initial metadata operation (starting a client-streaming or bidi-streaming
+  /// RPC) will not actually be sent to the completion queue or delivered
+  /// via Next.
+  ///
+  /// \param corked The flag indicating whether the initial metadata is to be
+  /// corked or not.
+  void set_initial_metadata_corked(bool corked) {
+    initial_metadata_corked_ = corked;
+  }
+
+  /// Return the peer uri in a string.
+  /// It is only valid to call this during the lifetime of the client call.
+  ///
+  /// \warning This value is never authenticated or subject to any security
+  /// related code. It must not be used for any authentication related
+  /// functionality. Instead, use auth_context.
+  ///
+  /// \return The call's peer URI.
+  TString peer() const;
+
+  /// Sets the census context.
+  /// It is only valid to call this before the client call is created. A common
+  /// place of setting census context is from within the DefaultConstructor
+  /// method of GlobalCallbacks.
+  void set_census_context(struct census_context* ccp) { census_context_ = ccp; }
+
+  /// Returns the census context that has been set, or nullptr if not set.
+  struct census_context* census_context() const { return census_context_; }
+
+  /// Send a best-effort out-of-band cancel on the call associated with
+  /// this client context.  The call could be in any stage; e.g., if it is
+  /// already finished, it may still return success.
+  ///
+  /// There is no guarantee the call will be cancelled.
+  ///
+  /// Note that TryCancel() does not change any of the tags that are pending
+  /// on the completion queue. All pending tags will still be delivered
+  /// (though their ok result may reflect the effect of cancellation).
+  ///
+  /// This method is thread-safe, and can be called multiple times from any
+  /// thread.
+  void TryCancel();
+
+  /// Global Callbacks
+  ///
+  /// Can be set exactly once per application to install hooks whenever
+  /// a client context is constructed and destructed.
+  class GlobalCallbacks {
+   public:
+    virtual ~GlobalCallbacks() {}
+    virtual void DefaultConstructor(ClientContext* context) = 0;
+    virtual void Destructor(ClientContext* context) = 0;
+  };
+  static void SetGlobalCallbacks(GlobalCallbacks* callbacks);
+
+  /// Should be used for framework-level extensions only.
+  /// Applications never need to call this method.
+  grpc_call* c_call() { return call_; }
+
+  /// EXPERIMENTAL debugging API
+  ///
+  /// if status is not ok() for an RPC, this will return a detailed string
+  /// of the gRPC Core error that led to the failure. It should not be relied
+  /// upon for anything other than gaining more debug data in failure cases.
+  TString debug_error_string() const { return debug_error_string_; }
+
+ private:
+  // Disallow copy and assign.
+  ClientContext(const ClientContext&);
+  ClientContext& operator=(const ClientContext&);
+
+  friend class grpc::testing::InteropClientContextInspector;
+  friend class grpc::testing::ClientContextTestPeer;
+  friend class grpc::internal::CallOpClientRecvStatus;
+  friend class grpc::internal::CallOpRecvInitialMetadata;
+  friend class grpc::Channel;
+  template <class R>
+  friend class grpc::ClientReader;
+  template <class W>
+  friend class grpc::ClientWriter;
+  template <class W, class R>
+  friend class grpc::ClientReaderWriter;
+  template <class R>
+  friend class grpc::ClientAsyncReader;
+  template <class W>
+  friend class grpc::ClientAsyncWriter;
+  template <class W, class R>
+  friend class grpc::ClientAsyncReaderWriter;
+  template <class R>
+  friend class grpc::ClientAsyncResponseReader;
+  friend class grpc::internal::ClientAsyncResponseReaderHelper;
+  template <class InputMessage, class OutputMessage>
+  friend class grpc::internal::BlockingUnaryCallImpl;
+  template <class InputMessage, class OutputMessage>
+  friend class grpc::internal::CallbackUnaryCallImpl;
+  template <class Request, class Response>
+  friend class grpc::internal::ClientCallbackReaderWriterImpl;
+  template <class Response>
+  friend class grpc::internal::ClientCallbackReaderImpl;
+  template <class Request>
+  friend class grpc::internal::ClientCallbackWriterImpl;
+  friend class grpc::internal::ClientCallbackUnaryImpl;
+  friend class grpc::internal::ClientContextAccessor;
+
+  // Used by friend class CallOpClientRecvStatus
+  void set_debug_error_string(const TString& debug_error_string) {
+    debug_error_string_ = debug_error_string;
+  }
+
+  grpc_call* call() const { return call_; }
+  void set_call(grpc_call* call, const std::shared_ptr<grpc::Channel>& channel);
+
+  grpc::experimental::ClientRpcInfo* set_client_rpc_info(
+      const char* method, const char* suffix_for_stats,
+      grpc::internal::RpcMethod::RpcType type, grpc::ChannelInterface* channel,
+      const std::vector<std::unique_ptr<
+          grpc::experimental::ClientInterceptorFactoryInterface>>& creators,
+      size_t interceptor_pos) {
+    rpc_info_ = grpc::experimental::ClientRpcInfo(this, type, method,
+                                                  suffix_for_stats, channel);
+    rpc_info_.RegisterInterceptors(creators, interceptor_pos);
+    return &rpc_info_;
+  }
+
+  uint32_t initial_metadata_flags() const {
+    return (wait_for_ready_ ? GRPC_INITIAL_METADATA_WAIT_FOR_READY : 0) |
+           (wait_for_ready_explicitly_set_
+                ? GRPC_INITIAL_METADATA_WAIT_FOR_READY_EXPLICITLY_SET
+                : 0);
+  }
+
+  TString authority() { return authority_; }
+
+  void SendCancelToInterceptors();
+
+  static std::unique_ptr<ClientContext> FromInternalServerContext(
+      const grpc::ServerContextBase& server_context,
+      PropagationOptions options);
+
+  bool initial_metadata_received_;
+  bool wait_for_ready_;
+  bool wait_for_ready_explicitly_set_;
+  std::shared_ptr<grpc::Channel> channel_;
+  grpc::internal::Mutex mu_;
+  grpc_call* call_;
+  bool call_canceled_;
+  gpr_timespec deadline_;
+  grpc::string authority_;
+  std::shared_ptr<grpc::CallCredentials> creds_;
+  mutable std::shared_ptr<const grpc::AuthContext> auth_context_;
+  struct census_context* census_context_;
+  std::multimap<TString, TString> send_initial_metadata_;
+  mutable grpc::internal::MetadataMap recv_initial_metadata_;
+  mutable grpc::internal::MetadataMap trailing_metadata_;
+
+  grpc_call* propagate_from_call_;
+  PropagationOptions propagation_options_;
+
+  grpc_compression_algorithm compression_algorithm_;
+  bool initial_metadata_corked_;
+
+  TString debug_error_string_;
+
+  grpc::experimental::ClientRpcInfo rpc_info_;
+};
+
+}  // namespace grpc
 
 #endif  // GRPCPP_CLIENT_CONTEXT_H
diff --git a/contrib/libs/grpc/include/grpcpp/completion_queue.h b/contrib/libs/grpc/include/grpcpp/completion_queue.h
index 42637b5927..23c98e0974 100644
--- a/contrib/libs/grpc/include/grpcpp/completion_queue.h
+++ b/contrib/libs/grpc/include/grpcpp/completion_queue.h
@@ -1,24 +1,455 @@
-/*
- *
- * Copyright 2015 gRPC authors.
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
- */
+//
+//
+// Copyright 2015 gRPC authors.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+//
 
+/// A completion queue implements a concurrent producer-consumer queue, with
+/// two main API-exposed methods: \a Next and \a AsyncNext. These
+/// methods are the essential component of the gRPC C++ asynchronous API.
+/// There is also a \a Shutdown method to indicate that a given completion queue
+/// will no longer have regular events. This must be called before the
+/// completion queue is destroyed.
+/// All completion queue APIs are thread-safe and may be used concurrently with
+/// any other completion queue API invocation; it is acceptable to have
+/// multiple threads calling \a Next or \a AsyncNext on the same or different
+/// completion queues, or to call these methods concurrently with a \a Shutdown
+/// elsewhere.
+/// \remark{All other API calls on completion queue should be completed before
+/// a completion queue destructor is called.}
 #ifndef GRPCPP_COMPLETION_QUEUE_H
 #define GRPCPP_COMPLETION_QUEUE_H
 
-#include <grpcpp/impl/codegen/completion_queue.h>  // IWYU pragma: export
+#include <list>
+
+#include <grpc/grpc.h>
+#include <grpc/support/atm.h>
+#include <grpc/support/log.h>
+#include <grpc/support/time.h>
+#include <grpcpp/impl/codegen/rpc_service_method.h>
+#include <grpcpp/impl/codegen/status.h>
+#include <grpcpp/impl/codegen/sync.h>
+#include <grpcpp/impl/codegen/time.h>
+#include <grpcpp/impl/completion_queue_tag.h>
+#include <grpcpp/impl/grpc_library.h>
+#include <grpcpp/impl/sync.h>
+
+struct grpc_completion_queue;
+
+namespace grpc {
+template <class R>
+class ClientReader;
+template <class W>
+class ClientWriter;
+template <class W, class R>
+class ClientReaderWriter;
+template <class R>
+class ServerReader;
+template <class W>
+class ServerWriter;
+namespace internal {
+template <class W, class R>
+class ServerReaderWriterBody;
+
+template <class ResponseType>
+void UnaryRunHandlerHelper(
+    const grpc::internal::MethodHandler::HandlerParameter&, ResponseType*,
+    grpc::Status&);
+template <class ServiceType, class RequestType, class ResponseType,
+          class BaseRequestType, class BaseResponseType>
+class RpcMethodHandler;
+template <class ServiceType, class RequestType, class ResponseType>
+class ClientStreamingHandler;
+template <class ServiceType, class RequestType, class ResponseType>
+class ServerStreamingHandler;
+template <class Streamer, bool WriteNeeded>
+class TemplatedBidiStreamingHandler;
+template <grpc::StatusCode code>
+class ErrorMethodHandler;
+}  // namespace internal
+
+class Channel;
+class ChannelInterface;
+class Server;
+class ServerBuilder;
+class ServerContextBase;
+class ServerInterface;
+
+namespace internal {
+class CompletionQueueTag;
+class RpcMethod;
+template <class InputMessage, class OutputMessage>
+class BlockingUnaryCallImpl;
+template <class Op1, class Op2, class Op3, class Op4, class Op5, class Op6>
+class CallOpSet;
+}  // namespace internal
+
+/// A thin wrapper around \ref grpc_completion_queue (see \ref
+/// src/core/lib/surface/completion_queue.h).
+/// See \ref doc/cpp/perf_notes.md for notes on best practices for high
+/// performance servers.
+class CompletionQueue : private grpc::internal::GrpcLibrary {
+ public:
+  /// Default constructor. Implicitly creates a \a grpc_completion_queue
+  /// instance.
+  CompletionQueue()
+      : CompletionQueue(grpc_completion_queue_attributes{
+            GRPC_CQ_CURRENT_VERSION, GRPC_CQ_NEXT, GRPC_CQ_DEFAULT_POLLING,
+            nullptr}) {}
+
+  /// Wrap \a take, taking ownership of the instance.
+  ///
+  /// \param take The completion queue instance to wrap. Ownership is taken.
+  explicit CompletionQueue(grpc_completion_queue* take);
+
+  /// Destructor. Destroys the owned wrapped completion queue / instance.
+  ~CompletionQueue() override { grpc_completion_queue_destroy(cq_); }
+
+  /// Tri-state return for AsyncNext: SHUTDOWN, GOT_EVENT, TIMEOUT.
+  enum NextStatus {
+    SHUTDOWN,   ///< The completion queue has been shutdown and fully-drained
+    GOT_EVENT,  ///< Got a new event; \a tag will be filled in with its
+                ///< associated value; \a ok indicating its success.
+    TIMEOUT     ///< deadline was reached.
+  };
+
+  /// Read from the queue, blocking until an event is available or the queue is
+  /// shutting down.
+  ///
+  /// \param[out] tag Updated to point to the read event's tag.
+  /// \param[out] ok true if read a successful event, false otherwise.
+  ///
+  /// Note that each tag sent to the completion queue (through RPC operations
+  /// or alarms) will be delivered out of the completion queue by a call to
+  /// Next (or a related method), regardless of whether the operation succeeded
+  /// or not. Success here means that this operation completed in the normal
+  /// valid manner.
+  ///
+  /// Server-side RPC request: \a ok indicates that the RPC has indeed
+  /// been started. If it is false, the server has been Shutdown
+  /// before this particular call got matched to an incoming RPC.
+  ///
+  /// Client-side StartCall/RPC invocation: \a ok indicates that the RPC is
+  /// going to go to the wire. If it is false, it not going to the wire. This
+  /// would happen if the channel is either permanently broken or
+  /// transiently broken but with the fail-fast option. (Note that async unary
+  /// RPCs don't post a CQ tag at this point, nor do client-streaming
+  /// or bidi-streaming RPCs that have the initial metadata corked option set.)
+  ///
+  /// Client-side Write, Client-side WritesDone, Server-side Write,
+  /// Server-side Finish, Server-side SendInitialMetadata (which is
+  /// typically included in Write or Finish when not done explicitly):
+  /// \a ok means that the data/metadata/status/etc is going to go to the
+  /// wire. If it is false, it not going to the wire because the call
+  /// is already dead (i.e., canceled, deadline expired, other side
+  /// dropped the channel, etc).
+  ///
+  /// Client-side Read, Server-side Read, Client-side
+  /// RecvInitialMetadata (which is typically included in Read if not
+  /// done explicitly): \a ok indicates whether there is a valid message
+  /// that got read. If not, you know that there are certainly no more
+  /// messages that can ever be read from this stream. For the client-side
+  /// operations, this only happens because the call is dead. For the
+  /// server-sider operation, though, this could happen because the client
+  /// has done a WritesDone already.
+  ///
+  /// Client-side Finish: \a ok should always be true
+  ///
+  /// Server-side AsyncNotifyWhenDone: \a ok should always be true
+  ///
+  /// Alarm: \a ok is true if it expired, false if it was canceled
+  ///
+  /// \return true if got an event, false if the queue is fully drained and
+  ///         shut down.
+  bool Next(void** tag, bool* ok) {
+    // Check return type == GOT_EVENT... cases:
+    // SHUTDOWN  - queue has been shutdown, return false.
+    // TIMEOUT   - we passed infinity time => queue has been shutdown, return
+    //             false.
+    // GOT_EVENT - we actually got an event, return true.
+    return (AsyncNextInternal(tag, ok, gpr_inf_future(GPR_CLOCK_REALTIME)) ==
+            GOT_EVENT);
+  }
+
+  /// Read from the queue, blocking up to \a deadline (or the queue's shutdown).
+  /// Both \a tag and \a ok are updated upon success (if an event is available
+  /// within the \a deadline).  A \a tag points to an arbitrary location usually
+  /// employed to uniquely identify an event.
+  ///
+  /// \param[out] tag Upon success, updated to point to the event's tag.
+  /// \param[out] ok Upon success, true if a successful event, false otherwise
+  ///        See documentation for CompletionQueue::Next for explanation of ok
+  /// \param[in] deadline How long to block in wait for an event.
+  ///
+  /// \return The type of event read.
+  template <typename T>
+  NextStatus AsyncNext(void** tag, bool* ok, const T& deadline) {
+    grpc::TimePoint<T> deadline_tp(deadline);
+    return AsyncNextInternal(tag, ok, deadline_tp.raw_time());
+  }
+
+  /// EXPERIMENTAL
+  /// First executes \a F, then reads from the queue, blocking up to
+  /// \a deadline (or the queue's shutdown).
+  /// Both \a tag and \a ok are updated upon success (if an event is available
+  /// within the \a deadline).  A \a tag points to an arbitrary location usually
+  /// employed to uniquely identify an event.
+  ///
+  /// \param[in] f Function to execute before calling AsyncNext on this queue.
+  /// \param[out] tag Upon success, updated to point to the event's tag.
+  /// \param[out] ok Upon success, true if read a regular event, false
+  /// otherwise.
+  /// \param[in] deadline How long to block in wait for an event.
+  ///
+  /// \return The type of event read.
+  template <typename T, typename F>
+  NextStatus DoThenAsyncNext(F&& f, void** tag, bool* ok, const T& deadline) {
+    CompletionQueueTLSCache cache = CompletionQueueTLSCache(this);
+    f();
+    if (cache.Flush(tag, ok)) {
+      return GOT_EVENT;
+    } else {
+      return AsyncNext(tag, ok, deadline);
+    }
+  }
+
+  /// Request the shutdown of the queue.
+  ///
+  /// \warning This method must be called at some point if this completion queue
+  /// is accessed with Next or AsyncNext. \a Next will not return false
+  /// until this method has been called and all pending tags have been drained.
+  /// (Likewise for \a AsyncNext returning \a NextStatus::SHUTDOWN .)
+  /// Only once either one of these methods does that (that is, once the queue
+  /// has been \em drained) can an instance of this class be destroyed.
+  /// Also note that applications must ensure that no work is enqueued on this
+  /// completion queue after this method is called.
+  void Shutdown();
+
+  /// Returns a \em raw pointer to the underlying \a grpc_completion_queue
+  /// instance.
+  ///
+  /// \warning Remember that the returned instance is owned. No transfer of
+  /// ownership is performed.
+  grpc_completion_queue* cq() { return cq_; }
+
+ protected:
+  /// Private constructor of CompletionQueue only visible to friend classes
+  explicit CompletionQueue(const grpc_completion_queue_attributes& attributes) {
+    cq_ = grpc_completion_queue_create(
+        grpc_completion_queue_factory_lookup(&attributes), &attributes,
+        nullptr);
+    InitialAvalanching();  // reserve this for the future shutdown
+  }
+
+ private:
+  // Friends for access to server registration lists that enable checking and
+  // logging on shutdown
+  friend class grpc::ServerBuilder;
+  friend class grpc::Server;
+
+  // Friend synchronous wrappers so that they can access Pluck(), which is
+  // a semi-private API geared towards the synchronous implementation.
+  template <class R>
+  friend class grpc::ClientReader;
+  template <class W>
+  friend class grpc::ClientWriter;
+  template <class W, class R>
+  friend class grpc::ClientReaderWriter;
+  template <class R>
+  friend class grpc::ServerReader;
+  template <class W>
+  friend class grpc::ServerWriter;
+  template <class W, class R>
+  friend class grpc::internal::ServerReaderWriterBody;
+  template <class ResponseType>
+  friend void grpc::internal::UnaryRunHandlerHelper(
+      const grpc::internal::MethodHandler::HandlerParameter&, ResponseType*,
+      grpc::Status&);
+  template <class ServiceType, class RequestType, class ResponseType>
+  friend class grpc::internal::ClientStreamingHandler;
+  template <class ServiceType, class RequestType, class ResponseType>
+  friend class grpc::internal::ServerStreamingHandler;
+  template <class Streamer, bool WriteNeeded>
+  friend class grpc::internal::TemplatedBidiStreamingHandler;
+  template <grpc::StatusCode code>
+  friend class grpc::internal::ErrorMethodHandler;
+  friend class grpc::ServerContextBase;
+  friend class grpc::ServerInterface;
+  template <class InputMessage, class OutputMessage>
+  friend class grpc::internal::BlockingUnaryCallImpl;
+
+  // Friends that need access to constructor for callback CQ
+  friend class grpc::Channel;
+
+  // For access to Register/CompleteAvalanching
+  template <class Op1, class Op2, class Op3, class Op4, class Op5, class Op6>
+  friend class grpc::internal::CallOpSet;
+
+  /// EXPERIMENTAL
+  /// Creates a Thread Local cache to store the first event
+  /// On this completion queue queued from this thread.  Once
+  /// initialized, it must be flushed on the same thread.
+  class CompletionQueueTLSCache {
+   public:
+    explicit CompletionQueueTLSCache(CompletionQueue* cq);
+    ~CompletionQueueTLSCache();
+    bool Flush(void** tag, bool* ok);
+
+   private:
+    CompletionQueue* cq_;
+    bool flushed_;
+  };
+
+  NextStatus AsyncNextInternal(void** tag, bool* ok, gpr_timespec deadline);
+
+  /// Wraps \a grpc_completion_queue_pluck.
+  /// \warning Must not be mixed with calls to \a Next.
+  bool Pluck(grpc::internal::CompletionQueueTag* tag) {
+    auto deadline = gpr_inf_future(GPR_CLOCK_REALTIME);
+    while (true) {
+      auto ev = grpc_completion_queue_pluck(cq_, tag, deadline, nullptr);
+      bool ok = ev.success != 0;
+      void* ignored = tag;
+      if (tag->FinalizeResult(&ignored, &ok)) {
+        GPR_ASSERT(ignored == tag);
+        return ok;
+      }
+    }
+  }
+
+  /// Performs a single polling pluck on \a tag.
+  /// \warning Must not be mixed with calls to \a Next.
+  ///
+  /// TODO: sreek - This calls tag->FinalizeResult() even if the cq_ is already
+  /// shutdown. This is most likely a bug and if it is a bug, then change this
+  /// implementation to simple call the other TryPluck function with a zero
+  /// timeout. i.e:
+  ///      TryPluck(tag, gpr_time_0(GPR_CLOCK_REALTIME))
+  void TryPluck(grpc::internal::CompletionQueueTag* tag) {
+    auto deadline = gpr_time_0(GPR_CLOCK_REALTIME);
+    auto ev = grpc_completion_queue_pluck(cq_, tag, deadline, nullptr);
+    if (ev.type == GRPC_QUEUE_TIMEOUT) return;
+    bool ok = ev.success != 0;
+    void* ignored = tag;
+    // the tag must be swallowed if using TryPluck
+    GPR_ASSERT(!tag->FinalizeResult(&ignored, &ok));
+  }
+
+  /// Performs a single polling pluck on \a tag. Calls tag->FinalizeResult if
+  /// the pluck() was successful and returned the tag.
+  ///
+  /// This exects tag->FinalizeResult (if called) to return 'false' i.e expects
+  /// that the tag is internal not something that is returned to the user.
+  void TryPluck(grpc::internal::CompletionQueueTag* tag,
+                gpr_timespec deadline) {
+    auto ev = grpc_completion_queue_pluck(cq_, tag, deadline, nullptr);
+    if (ev.type == GRPC_QUEUE_TIMEOUT || ev.type == GRPC_QUEUE_SHUTDOWN) {
+      return;
+    }
+
+    bool ok = ev.success != 0;
+    void* ignored = tag;
+    GPR_ASSERT(!tag->FinalizeResult(&ignored, &ok));
+  }
+
+  /// Manage state of avalanching operations : completion queue tags that
+  /// trigger other completion queue operations. The underlying core completion
+  /// queue should not really shutdown until all avalanching operations have
+  /// been finalized. Note that we maintain the requirement that an avalanche
+  /// registration must take place before CQ shutdown (which must be maintained
+  /// elsewhere)
+  void InitialAvalanching() {
+    gpr_atm_rel_store(&avalanches_in_flight_, gpr_atm{1});
+  }
+  void RegisterAvalanching() {
+    gpr_atm_no_barrier_fetch_add(&avalanches_in_flight_, gpr_atm{1});
+  }
+  void CompleteAvalanching() {
+    if (gpr_atm_no_barrier_fetch_add(&avalanches_in_flight_, gpr_atm{-1}) ==
+        1) {
+      grpc_completion_queue_shutdown(cq_);
+    }
+  }
+
+  void RegisterServer(const grpc::Server* server) {
+    (void)server;
+#ifndef NDEBUG
+    grpc::internal::MutexLock l(&server_list_mutex_);
+    server_list_.push_back(server);
+#endif
+  }
+  void UnregisterServer(const grpc::Server* server) {
+    (void)server;
+#ifndef NDEBUG
+    grpc::internal::MutexLock l(&server_list_mutex_);
+    server_list_.remove(server);
+#endif
+  }
+  bool ServerListEmpty() const {
+#ifndef NDEBUG
+    grpc::internal::MutexLock l(&server_list_mutex_);
+    return server_list_.empty();
+#endif
+    return true;
+  }
+
+  static CompletionQueue* CallbackAlternativeCQ();
+  static void ReleaseCallbackAlternativeCQ(CompletionQueue* cq);
+
+  grpc_completion_queue* cq_;  // owned
+
+  gpr_atm avalanches_in_flight_;
+
+  // List of servers associated with this CQ. Even though this is only used with
+  // NDEBUG, instantiate it in all cases since otherwise the size will be
+  // inconsistent.
+  mutable grpc::internal::Mutex server_list_mutex_;
+  std::list<const grpc::Server*>
+      server_list_ /* GUARDED_BY(server_list_mutex_) */;
+};
+
+/// A specific type of completion queue used by the processing of notifications
+/// by servers. Instantiated by \a ServerBuilder or Server (for health checker).
+class ServerCompletionQueue : public CompletionQueue {
+ public:
+  bool IsFrequentlyPolled() { return polling_type_ != GRPC_CQ_NON_LISTENING; }
+
+ protected:
+  /// Default constructor
+  ServerCompletionQueue() : polling_type_(GRPC_CQ_DEFAULT_POLLING) {}
+
+ private:
+  /// \param completion_type indicates whether this is a NEXT or CALLBACK
+  /// completion queue.
+  /// \param polling_type Informs the GRPC library about the type of polling
+  /// allowed on this completion queue. See grpc_cq_polling_type's description
+  /// in grpc_types.h for more details.
+  /// \param shutdown_cb is the shutdown callback used for CALLBACK api queues
+  ServerCompletionQueue(grpc_cq_completion_type completion_type,
+                        grpc_cq_polling_type polling_type,
+                        grpc_completion_queue_functor* shutdown_cb)
+      : CompletionQueue(grpc_completion_queue_attributes{
+            GRPC_CQ_CURRENT_VERSION, completion_type, polling_type,
+            shutdown_cb}),
+        polling_type_(polling_type) {}
+
+  grpc_cq_polling_type polling_type_;
+  friend class grpc::ServerBuilder;
+  friend class grpc::Server;
+};
+
+}  // namespace grpc
 
 #endif  // GRPCPP_COMPLETION_QUEUE_H
diff --git a/contrib/libs/grpc/include/grpcpp/create_channel.h b/contrib/libs/grpc/include/grpcpp/create_channel.h
index df015b9869..83f905e776 100644
--- a/contrib/libs/grpc/include/grpcpp/create_channel.h
+++ b/contrib/libs/grpc/include/grpcpp/create_channel.h
@@ -1,20 +1,20 @@
-/*
- *
- * Copyright 2015 gRPC authors.
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
- */
+//
+//
+// Copyright 2015 gRPC authors.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+//
 
 #ifndef GRPCPP_CREATE_CHANNEL_H
 #define GRPCPP_CREATE_CHANNEL_H
diff --git a/contrib/libs/grpc/include/grpcpp/create_channel_binder.h b/contrib/libs/grpc/include/grpcpp/create_channel_binder.h
index 377e4d4cd6..1a2963b40e 100644
--- a/contrib/libs/grpc/include/grpcpp/create_channel_binder.h
+++ b/contrib/libs/grpc/include/grpcpp/create_channel_binder.h
@@ -36,7 +36,7 @@ namespace experimental {
 /// name and class name will be used identify the specific application component
 /// to connect to.
 ///
-/// \param jni_env Pointer to a JNIEnv structure
+/// \param jni_env_void Pointer to a JNIEnv structure
 /// \param context The context that we will use to invoke \a bindService See
 /// https://developer.android.com/reference/android/content/Context#bindService(android.content.Intent,%20android.content.ServiceConnection,%20int)
 /// for detail.
@@ -45,7 +45,7 @@ namespace experimental {
 /// \param security_policy Used for checking if remote component is allowed to
 /// connect
 std::shared_ptr<grpc::Channel> CreateBinderChannel(
-    void* jni_env, jobject context, y_absl::string_view package_name,
+    void* jni_env_void, jobject context, y_absl::string_view package_name,
     y_absl::string_view class_name,
     std::shared_ptr<grpc::experimental::binder::SecurityPolicy>
         security_policy);
@@ -54,7 +54,7 @@ std::shared_ptr<grpc::Channel> CreateBinderChannel(
 /// name and class name will be used identify the specific application component
 /// to connect to.
 ///
-/// \param jni_env Pointer to a JNIEnv structure
+/// \param jni_env_void Pointer to a JNIEnv structure
 /// \param context The context that we will use to invoke \a bindService See
 /// https://developer.android.com/reference/android/content/Context#bindService(android.content.Intent,%20android.content.ServiceConnection,%20int)
 /// for detail.
@@ -64,14 +64,14 @@ std::shared_ptr<grpc::Channel> CreateBinderChannel(
 /// connect
 /// \param args Options for channel creation.
 std::shared_ptr<grpc::Channel> CreateCustomBinderChannel(
-    void* jni_env_void, jobject application, y_absl::string_view package_name,
+    void* jni_env_void, jobject context, y_absl::string_view package_name,
     y_absl::string_view class_name,
     std::shared_ptr<grpc::experimental::binder::SecurityPolicy> security_policy,
     const ChannelArguments& args);
 
 /// EXPERIMENTAL Create a new \a Channel based on binder transport.
 ///
-/// \param jni_env Pointer to a JNIEnv structure
+/// \param jni_env_void Pointer to a JNIEnv structure
 /// \param context The context that we will use to invoke \a bindService See
 /// https://developer.android.com/reference/android/content/Context#bindService(android.content.Intent,%20android.content.ServiceConnection,%20int)
 /// for detail.
@@ -80,13 +80,13 @@ std::shared_ptr<grpc::Channel> CreateCustomBinderChannel(
 /// \param security_policy Used for checking if remote component is allowed to
 /// connect
 std::shared_ptr<grpc::Channel> CreateBinderChannel(
-    void* jni_env, jobject context, y_absl::string_view uri,
+    void* jni_env_void, jobject context, y_absl::string_view uri,
     std::shared_ptr<grpc::experimental::binder::SecurityPolicy>
         security_policy);
 
 /// EXPERIMENTAL Create a new \a Channel based on binder transport.
 ///
-/// \param jni_env Pointer to a JNIEnv structure
+/// \param jni_env_void Pointer to a JNIEnv structure
 /// \param context The context that we will use to invoke \a bindService See
 /// https://developer.android.com/reference/android/content/Context#bindService(android.content.Intent,%20android.content.ServiceConnection,%20int)
 /// for detail.
@@ -96,7 +96,7 @@ std::shared_ptr<grpc::Channel> CreateBinderChannel(
 /// connect
 /// \param args Options for channel creation.
 std::shared_ptr<grpc::Channel> CreateCustomBinderChannel(
-    void* jni_env, jobject context, y_absl::string_view uri,
+    void* jni_env_void, jobject context, y_absl::string_view uri,
     std::shared_ptr<grpc::experimental::binder::SecurityPolicy> security_policy,
     const ChannelArguments& args);
 
diff --git a/contrib/libs/grpc/include/grpcpp/create_channel_posix.h b/contrib/libs/grpc/include/grpcpp/create_channel_posix.h
index a57b4deeb1..1d3f32eb18 100644
--- a/contrib/libs/grpc/include/grpcpp/create_channel_posix.h
+++ b/contrib/libs/grpc/include/grpcpp/create_channel_posix.h
@@ -1,20 +1,20 @@
-/*
- *
- * Copyright 2016 gRPC authors.
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
- */
+//
+//
+// Copyright 2016 gRPC authors.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+//
 
 #ifndef GRPCPP_CREATE_CHANNEL_POSIX_H
 #define GRPCPP_CREATE_CHANNEL_POSIX_H
diff --git a/contrib/libs/grpc/include/grpcpp/ext/call_metric_recorder.h b/contrib/libs/grpc/include/grpcpp/ext/call_metric_recorder.h
index 91e25760f3..66a0e99d33 100644
--- a/contrib/libs/grpc/include/grpcpp/ext/call_metric_recorder.h
+++ b/contrib/libs/grpc/include/grpcpp/ext/call_metric_recorder.h
@@ -1,20 +1,20 @@
-/*
- *
- * Copyright 2022 gRPC authors.
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
- */
+//
+//
+// Copyright 2022 gRPC authors.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+//
 
 #ifndef GRPCPP_EXT_CALL_METRIC_RECORDER_H
 #define GRPCPP_EXT_CALL_METRIC_RECORDER_H
@@ -26,42 +26,33 @@
 #include "y_absl/strings/string_view.h"
 #include "y_absl/types/optional.h"
 
-#include <grpcpp/impl/codegen/slice.h>
-#include <grpcpp/impl/codegen/sync.h>
-
-namespace grpc_core {
-class Arena;
-struct BackendMetricData;
-}  // namespace grpc_core
+#include <grpcpp/impl/sync.h>
+#include <grpcpp/support/slice.h>
 
 namespace grpc {
-class ServerBuilder;
-
 namespace experimental {
-class OrcaServerInterceptor;
-
-// Registers the per-rpc orca load reporter into the \a ServerBuilder.
-// Once this is done, the server will automatically send the load metrics
-// after each RPC as they were reported. In order to report load metrics,
-// call the \a ServerContext::ExperimentalGetCallMetricRecorder() method to
-// retrieve the recorder for the current call.
-void EnableCallMetricRecording(ServerBuilder*);
 
 /// Records call metrics for the purpose of load balancing.
 /// During an RPC, call \a ServerContext::ExperimentalGetCallMetricRecorder()
 /// method to retrive the recorder for the current call.
 class CallMetricRecorder {
  public:
-  explicit CallMetricRecorder(grpc_core::Arena* arena);
-  ~CallMetricRecorder();
+  virtual ~CallMetricRecorder() = default;
 
   /// Records a call metric measurement for CPU utilization.
   /// Multiple calls to this method will override the stored value.
-  CallMetricRecorder& RecordCpuUtilizationMetric(double value);
+  /// Values outside of the valid range [0, 1] are ignored.
+  virtual CallMetricRecorder& RecordCpuUtilizationMetric(double value) = 0;
 
   /// Records a call metric measurement for memory utilization.
   /// Multiple calls to this method will override the stored value.
-  CallMetricRecorder& RecordMemoryUtilizationMetric(double value);
+  /// Values outside of the valid range [0, 1] are ignored.
+  virtual CallMetricRecorder& RecordMemoryUtilizationMetric(double value) = 0;
+
+  /// Records a call metric measurement for queries per second.
+  /// Multiple calls to this method will override the stored value.
+  /// Values outside of the valid range [0, infy) are ignored.
+  virtual CallMetricRecorder& RecordQpsMetric(double value) = 0;
 
   /// Records a call metric measurement for utilization.
   /// Multiple calls to this method with the same name will
@@ -70,7 +61,9 @@ class CallMetricRecorder {
   /// itself, since it's going to be sent as trailers after the RPC
   /// finishes. It is assumed the strings are common names that
   /// are global constants.
-  CallMetricRecorder& RecordUtilizationMetric(string_ref name, double value);
+  /// Values outside of the valid range [0, 1] are ignored.
+  virtual CallMetricRecorder& RecordUtilizationMetric(string_ref name,
+                                                      double value) = 0;
 
   /// Records a call metric measurement for request cost.
   /// Multiple calls to this method with the same name will
@@ -79,14 +72,8 @@ class CallMetricRecorder {
   /// itself, since it's going to be sent as trailers after the RPC
   /// finishes. It is assumed the strings are common names that
   /// are global constants.
-  CallMetricRecorder& RecordRequestCostMetric(string_ref name, double value);
-
- private:
-  y_absl::optional<TString> CreateSerializedReport();
-
-  internal::Mutex mu_;
-  grpc_core::BackendMetricData* backend_metric_data_ Y_ABSL_GUARDED_BY(&mu_);
-  friend class experimental::OrcaServerInterceptor;
+  virtual CallMetricRecorder& RecordRequestCostMetric(string_ref name,
+                                                      double value) = 0;
 };
 
 }  // namespace experimental
diff --git a/contrib/libs/grpc/include/grpcpp/ext/channelz_service_plugin.h b/contrib/libs/grpc/include/grpcpp/ext/channelz_service_plugin.h
index af3192d451..23882abb50 100644
--- a/contrib/libs/grpc/include/grpcpp/ext/channelz_service_plugin.h
+++ b/contrib/libs/grpc/include/grpcpp/ext/channelz_service_plugin.h
@@ -1,20 +1,20 @@
-/*
- *
- * Copyright 2018 gRPC authors.
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
- */
+//
+//
+// Copyright 2018 gRPC authors.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+//
 
 #ifndef GRPCPP_EXT_CHANNELZ_SERVICE_PLUGIN_H
 #define GRPCPP_EXT_CHANNELZ_SERVICE_PLUGIN_H
diff --git a/contrib/libs/grpc/include/grpcpp/ext/health_check_service_server_builder_option.h b/contrib/libs/grpc/include/grpcpp/ext/health_check_service_server_builder_option.h
index dd43b05ef0..85b661ee51 100644
--- a/contrib/libs/grpc/include/grpcpp/ext/health_check_service_server_builder_option.h
+++ b/contrib/libs/grpc/include/grpcpp/ext/health_check_service_server_builder_option.h
@@ -1,20 +1,20 @@
-/*
- *
- * Copyright 2016 gRPC authors.
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
- */
+//
+//
+// Copyright 2016 gRPC authors.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+//
 
 #ifndef GRPCPP_EXT_HEALTH_CHECK_SERVICE_SERVER_BUILDER_OPTION_H
 #define GRPCPP_EXT_HEALTH_CHECK_SERVICE_SERVER_BUILDER_OPTION_H
diff --git a/contrib/libs/grpc/include/grpcpp/ext/proto_server_reflection_plugin.h b/contrib/libs/grpc/include/grpcpp/ext/proto_server_reflection_plugin.h
index f693c00ae4..9c618fbd46 100644
--- a/contrib/libs/grpc/include/grpcpp/ext/proto_server_reflection_plugin.h
+++ b/contrib/libs/grpc/include/grpcpp/ext/proto_server_reflection_plugin.h
@@ -1,20 +1,20 @@
-/*
- *
- * Copyright 2015 gRPC authors.
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
- */
+//
+//
+// Copyright 2015 gRPC authors.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+//
 
 #ifndef GRPCPP_EXT_PROTO_SERVER_REFLECTION_PLUGIN_H
 #define GRPCPP_EXT_PROTO_SERVER_REFLECTION_PLUGIN_H
diff --git a/contrib/libs/grpc/include/grpcpp/ext/server_metric_recorder.h b/contrib/libs/grpc/include/grpcpp/ext/server_metric_recorder.h
new file mode 100644
index 0000000000..6333072214
--- /dev/null
+++ b/contrib/libs/grpc/include/grpcpp/ext/server_metric_recorder.h
@@ -0,0 +1,108 @@
+//
+//
+// Copyright 2023 gRPC authors.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+//
+
+#ifndef GRPCPP_EXT_SERVER_METRIC_RECORDER_H
+#define GRPCPP_EXT_SERVER_METRIC_RECORDER_H
+
+#include <functional>
+#include <map>
+#include <memory>
+
+#include <grpcpp/impl/sync.h>
+#include <grpcpp/support/string_ref.h>
+
+namespace grpc_core {
+struct BackendMetricData;
+}  // namespace grpc_core
+
+namespace grpc {
+class BackendMetricState;
+
+namespace experimental {
+/// Records server wide metrics to be reported to the client.
+/// Server implementation creates an instance and reports server metrics to it,
+/// and then passes it to
+/// ServerBuilder::experimental_type::EnableCallMetricRecording or
+/// experimental::OrcaService that read metrics to include in the report.
+class ServerMetricRecorder {
+ public:
+  // Factory method. Use this to create.
+  static std::unique_ptr<ServerMetricRecorder> Create();
+  /// Records the server CPU utilization in the range [0, 1].
+  /// Values outside of the valid range are rejected.
+  /// Overrides the stored value when called again with a valid value.
+  void SetCpuUtilization(double value);
+  /// Records the server memory utilization in the range [0, 1].
+  /// Values outside of the valid range are rejected.
+  /// Overrides the stored value when called again with a valid value.
+  void SetMemoryUtilization(double value);
+  /// Records number of queries per second to the server in the range [0, infy).
+  /// Values outside of the valid range are rejected.
+  /// Overrides the stored value when called again with a valid value.
+  void SetQps(double value);
+  /// Records a named resource utilization value in the range [0, 1].
+  /// Values outside of the valid range are rejected.
+  /// Overrides the stored value when called again with the same name.
+  /// The name string should remain valid while this utilization remains
+  /// in this recorder. It is assumed that strings are common names that are
+  /// global constants.
+  void SetNamedUtilization(string_ref name, double value);
+  /// Replaces all named resource utilization values. No range validation.
+  /// The name strings should remain valid while utilization values remain
+  /// in this recorder. It is assumed that strings are common names that are
+  /// global constants.
+  void SetAllNamedUtilization(std::map<string_ref, double> named_utilization);
+
+  /// Clears the server CPU utilization if recorded.
+  void ClearCpuUtilization();
+  /// Clears the server memory utilization if recorded.
+  void ClearMemoryUtilization();
+  /// Clears number of queries per second to the server if recorded.
+  void ClearQps();
+  /// Clears a named utilization value if exists.
+  void ClearNamedUtilization(string_ref name);
+
+ private:
+  // To access GetMetrics().
+  friend class grpc::BackendMetricState;
+  friend class OrcaService;
+
+  struct BackendMetricDataState;
+
+  // No direct creation, use the factory method Create() above.
+  ServerMetricRecorder();
+
+  // Updates the metric state by applying `updater` to the data and incrementing
+  // the sequence number.
+  void UpdateBackendMetricDataState(
+      std::function<void(grpc_core::BackendMetricData*)> updater);
+
+  grpc_core::BackendMetricData GetMetrics() const;
+  // Returned metric data is guaranteed to be identical between two calls if the
+  // sequence numbers match.
+  std::shared_ptr<const BackendMetricDataState> GetMetricsIfChanged() const;
+
+  mutable grpc::internal::Mutex mu_;
+  std::shared_ptr<const BackendMetricDataState> metric_state_
+      Y_ABSL_GUARDED_BY(mu_);
+};
+
+}  // namespace experimental
+}  // namespace grpc
+
+#endif  // GRPCPP_EXT_SERVER_METRIC_RECORDER_H
diff --git a/contrib/libs/grpc/include/grpcpp/generic/async_generic_service.h b/contrib/libs/grpc/include/grpcpp/generic/async_generic_service.h
index 9fb2bb9acb..40eeb0e56e 100644
--- a/contrib/libs/grpc/include/grpcpp/generic/async_generic_service.h
+++ b/contrib/libs/grpc/include/grpcpp/generic/async_generic_service.h
@@ -1,27 +1,27 @@
-/*
- *
- * Copyright 2018 gRPC authors.
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
- */
+//
+//
+// Copyright 2018 gRPC authors.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+//
 
 #ifndef GRPCPP_GENERIC_ASYNC_GENERIC_SERVICE_H
 #define GRPCPP_GENERIC_ASYNC_GENERIC_SERVICE_H
 
-#include <grpc/impl/codegen/port_platform.h>
+#include <grpc/support/port_platform.h>
 
-#include <grpcpp/impl/codegen/server_callback_handlers.h>
+#include <grpcpp/impl/server_callback_handlers.h>
 #include <grpcpp/support/async_stream.h>
 #include <grpcpp/support/byte_buffer.h>
 #include <grpcpp/support/server_callback.h>
diff --git a/contrib/libs/grpc/include/grpcpp/grpcpp.h b/contrib/libs/grpc/include/grpcpp/grpcpp.h
index fbc161bec1..49154de8b0 100644
--- a/contrib/libs/grpc/include/grpcpp/grpcpp.h
+++ b/contrib/libs/grpc/include/grpcpp/grpcpp.h
@@ -1,20 +1,20 @@
-/*
- *
- * Copyright 2015 gRPC authors.
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
- */
+//
+//
+// Copyright 2015 gRPC authors.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+//
 
 /// \mainpage gRPC C++ API
 ///
@@ -58,6 +58,7 @@
 #include <grpcpp/server_builder.h>
 #include <grpcpp/server_context.h>
 #include <grpcpp/server_posix.h>
+#include <grpcpp/version_info.h>
 // IWYU pragma: end_exports
 
 namespace grpc {
diff --git a/contrib/libs/grpc/include/grpcpp/health_check_service_interface.h b/contrib/libs/grpc/include/grpcpp/health_check_service_interface.h
index de055a82ea..23e4e99f53 100644
--- a/contrib/libs/grpc/include/grpcpp/health_check_service_interface.h
+++ b/contrib/libs/grpc/include/grpcpp/health_check_service_interface.h
@@ -1,20 +1,20 @@
-/*
- *
- * Copyright 2016 gRPC authors.
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
- */
+//
+//
+// Copyright 2016 gRPC authors.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+//
 
 #ifndef GRPCPP_HEALTH_CHECK_SERVICE_INTERFACE_H
 #define GRPCPP_HEALTH_CHECK_SERVICE_INTERFACE_H
diff --git a/contrib/libs/grpc/include/grpcpp/impl/call.h b/contrib/libs/grpc/include/grpcpp/impl/call.h
index 2a119963f5..32c5817532 100644
--- a/contrib/libs/grpc/include/grpcpp/impl/call.h
+++ b/contrib/libs/grpc/include/grpcpp/impl/call.h
@@ -1,25 +1,25 @@
-/*
- *
- * Copyright 2015 gRPC authors.
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
- */
+//
+//
+// Copyright 2015 gRPC authors.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+//
 
 #ifndef GRPCPP_IMPL_CALL_H
 #define GRPCPP_IMPL_CALL_H
 
-#include <grpc/impl/codegen/grpc_types.h>
+#include <grpc/impl/grpc_types.h>
 #include <grpcpp/impl/call_hook.h>
 
 namespace grpc {
@@ -40,7 +40,7 @@ class Call final {
         cq_(nullptr),
         call_(nullptr),
         max_receive_message_size_(-1) {}
-  /** call is owned by the caller */
+  /// call is owned by the caller
   Call(grpc_call* call, CallHook* call_hook, grpc::CompletionQueue* cq)
       : call_hook_(call_hook),
         cq_(cq),
diff --git a/contrib/libs/grpc/include/grpcpp/impl/call_hook.h b/contrib/libs/grpc/include/grpcpp/impl/call_hook.h
index 8903b9a06e..2376769194 100644
--- a/contrib/libs/grpc/include/grpcpp/impl/call_hook.h
+++ b/contrib/libs/grpc/include/grpcpp/impl/call_hook.h
@@ -1,20 +1,20 @@
-/*
- *
- * Copyright 2015 gRPC authors.
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
- */
+//
+//
+// Copyright 2015 gRPC authors.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+//
 
 #ifndef GRPCPP_IMPL_CALL_HOOK_H
 #define GRPCPP_IMPL_CALL_HOOK_H
diff --git a/contrib/libs/grpc/include/grpcpp/impl/codegen/call_op_set.h b/contrib/libs/grpc/include/grpcpp/impl/call_op_set.h
index ce8b363d6a..88f0ea0e00 100644
--- a/contrib/libs/grpc/include/grpcpp/impl/codegen/call_op_set.h
+++ b/contrib/libs/grpc/include/grpcpp/impl/call_op_set.h
@@ -1,55 +1,50 @@
-/*
- *
- * Copyright 2018 gRPC authors.
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
- */
-
-#if defined(__GNUC__)
-#pragma GCC system_header
-#endif
-
-#ifndef GRPCPP_IMPL_CODEGEN_CALL_OP_SET_H
-#define GRPCPP_IMPL_CODEGEN_CALL_OP_SET_H
-
-// IWYU pragma: private
+//
+//
+// Copyright 2018 gRPC authors.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+//
+
+#ifndef GRPCPP_IMPL_CALL_OP_SET_H
+#define GRPCPP_IMPL_CALL_OP_SET_H
 
 #include <cstring>
 #include <map>
 #include <memory>
 
-#include <grpc/impl/codegen/compression_types.h>
-#include <grpc/impl/codegen/grpc_types.h>
-#include <grpcpp/impl/codegen/call.h>
-#include <grpcpp/impl/codegen/call_hook.h>
-#include <grpcpp/impl/codegen/call_op_set_interface.h>
-#include <grpcpp/impl/codegen/client_context.h>
-#include <grpcpp/impl/codegen/completion_queue.h>
-#include <grpcpp/impl/codegen/completion_queue_tag.h>
-#include <grpcpp/impl/codegen/config.h>
-#include <grpcpp/impl/codegen/core_codegen_interface.h>
+#include <grpc/grpc.h>
+#include <grpc/impl/compression_types.h>
+#include <grpc/impl/grpc_types.h>
+#include <grpc/slice.h>
+#include <grpc/support/alloc.h>
+#include <grpc/support/log.h>
+#include <grpcpp/client_context.h>
+#include <grpcpp/completion_queue.h>
+#include <grpcpp/impl/call.h>
+#include <grpcpp/impl/call_hook.h>
+#include <grpcpp/impl/call_op_set_interface.h>
 #include <grpcpp/impl/codegen/intercepted_channel.h>
-#include <grpcpp/impl/codegen/interceptor_common.h>
-#include <grpcpp/impl/codegen/serialization_traits.h>
-#include <grpcpp/impl/codegen/slice.h>
-#include <grpcpp/impl/codegen/string_ref.h>
+#include <grpcpp/impl/completion_queue_tag.h>
+#include <grpcpp/impl/interceptor_common.h>
+#include <grpcpp/impl/serialization_traits.h>
 #include <grpcpp/support/byte_buffer.h>
+#include <grpcpp/support/config.h>
+#include <grpcpp/support/slice.h>
+#include <grpcpp/support/string_ref.h>
 
 namespace grpc {
 
-extern CoreCodegenInterface* g_core_codegen_interface;
-
 namespace internal {
 class Call;
 class CallHook;
@@ -63,18 +58,16 @@ inline grpc_metadata* FillMetadataArray(
   if (*metadata_count == 0) {
     return nullptr;
   }
-  grpc_metadata* metadata_array =
-      static_cast<grpc_metadata*>(g_core_codegen_interface->gpr_malloc(
-          (*metadata_count) * sizeof(grpc_metadata)));
+  grpc_metadata* metadata_array = static_cast<grpc_metadata*>(
+      gpr_malloc((*metadata_count) * sizeof(grpc_metadata)));
   size_t i = 0;
   for (auto iter = metadata.cbegin(); iter != metadata.cend(); ++iter, ++i) {
     metadata_array[i].key = SliceReferencingString(iter->first);
     metadata_array[i].value = SliceReferencingString(iter->second);
   }
   if (!optional_error_details.empty()) {
-    metadata_array[i].key =
-        g_core_codegen_interface->grpc_slice_from_static_buffer(
-            kBinaryErrorDetailsKey, sizeof(kBinaryErrorDetailsKey) - 1);
+    metadata_array[i].key = grpc_slice_from_static_buffer(
+        kBinaryErrorDetailsKey, sizeof(kBinaryErrorDetailsKey) - 1);
     metadata_array[i].value = SliceReferencingString(optional_error_details);
   }
   return metadata_array;
@@ -259,7 +252,7 @@ class CallOpSendInitialMetadata {
   }
   void FinishOp(bool* /*status*/) {
     if (!send_ || hijacked_) return;
-    g_core_codegen_interface->gpr_free(initial_metadata_);
+    gpr_free(initial_metadata_);
     send_ = false;
   }
 
@@ -323,7 +316,7 @@ class CallOpSendMessage {
       return;
     }
     if (msg_ != nullptr) {
-      GPR_CODEGEN_ASSERT(serializer_(msg_).ok());
+      GPR_ASSERT(serializer_(msg_).ok());
     }
     serializer_ = nullptr;
     grpc_op* op = &ops[(*nops)++];
@@ -387,11 +380,7 @@ Status CallOpSendMessage::SendMessage(const M& message, WriteOptions options) {
   write_options_ = options;
   // Serialize immediately since we do not have access to the message pointer
   bool own_buf;
-  // TODO(vjpai): Remove the void below when possible
-  // The void in the template parameter below should not be needed
-  // (since it should be implicit) but is needed due to an observed
-  // difference in behavior between clang and gcc for certain internal users
-  Status result = SerializationTraits<M, void>::Serialize(
+  Status result = SerializationTraits<M>::Serialize(
       message, send_buf_.bbuf_ptr(), &own_buf);
   if (!own_buf) {
     send_buf_.Duplicate();
@@ -416,7 +405,7 @@ Status CallOpSendMessage::SendMessagePtr(const M* message,
     // The void in the template parameter below should not be needed
     // (since it should be implicit) but is needed due to an observed
     // difference in behavior between clang and gcc for certain internal users
-    Status result = SerializationTraits<M, void>::Serialize(
+    Status result = SerializationTraits<M>::Serialize(
         *static_cast<const M*>(message), send_buf_.bbuf_ptr(), &own_buf);
     if (!own_buf) {
       send_buf_.Duplicate();
@@ -696,7 +685,7 @@ class CallOpServerSendStatus {
 
   void FinishOp(bool* /*status*/) {
     if (!send_status_available_ || hijacked_) return;
-    g_core_codegen_interface->gpr_free(trailing_metadata_);
+    gpr_free(trailing_metadata_);
     send_status_available_ = false;
   }
 
@@ -786,7 +775,7 @@ class CallOpClientRecvStatus {
     client_context_ = context;
     metadata_map_ = &client_context_->trailing_metadata_;
     recv_status_ = status;
-    error_message_ = g_core_codegen_interface->grpc_empty_slice();
+    error_message_ = grpc_empty_slice();
   }
 
  protected:
@@ -806,7 +795,7 @@ class CallOpClientRecvStatus {
     if (recv_status_ == nullptr || hijacked_) return;
     if (static_cast<StatusCode>(status_code_) == StatusCode::OK) {
       *recv_status_ = Status();
-      GPR_CODEGEN_DEBUG_ASSERT(debug_error_string_ == nullptr);
+      GPR_DEBUG_ASSERT(debug_error_string_ == nullptr);
     } else {
       *recv_status_ =
           Status(static_cast<StatusCode>(status_code_),
@@ -817,13 +806,12 @@ class CallOpClientRecvStatus {
                  metadata_map_->GetBinaryErrorDetails());
       if (debug_error_string_ != nullptr) {
         client_context_->set_debug_error_string(debug_error_string_);
-        g_core_codegen_interface->gpr_free(
-            const_cast<char*>(debug_error_string_));
+        gpr_free(const_cast<char*>(debug_error_string_));
       }
     }
     // TODO(soheil): Find callers that set debug string even for status OK,
     //               and fix them.
-    g_core_codegen_interface->grpc_slice_unref(error_message_);
+    grpc_slice_unref(error_message_);
   }
 
   void SetInterceptionHookPoint(
@@ -902,7 +890,7 @@ class CallOpSet : public CallOpSetInterface,
 
   void FillOps(Call* call) override {
     done_intercepting_ = false;
-    g_core_codegen_interface->grpc_call_ref(call->call());
+    grpc_call_ref(call->call());
     call_ =
         *call;  // It's fine to create a copy of call since it's just pointers
 
@@ -923,7 +911,7 @@ class CallOpSet : public CallOpSetInterface,
       // run
       *tag = return_tag_;
       *status = saved_status_;
-      g_core_codegen_interface->grpc_call_unref(call_.call());
+      grpc_call_unref(call_.call());
       return true;
     }
 
@@ -936,7 +924,7 @@ class CallOpSet : public CallOpSetInterface,
     saved_status_ = *status;
     if (RunInterceptorsPostRecv()) {
       *tag = return_tag_;
-      g_core_codegen_interface->grpc_call_unref(call_.call());
+      grpc_call_unref(call_.call());
       return true;
     }
     // Interceptors are going to be run, so we can't return the tag just yet.
@@ -977,16 +965,16 @@ class CallOpSet : public CallOpSetInterface,
     this->Op5::AddOp(ops, &nops);
     this->Op6::AddOp(ops, &nops);
 
-    grpc_call_error err = g_core_codegen_interface->grpc_call_start_batch(
-        call_.call(), ops, nops, core_cq_tag(), nullptr);
+    grpc_call_error err =
+        grpc_call_start_batch(call_.call(), ops, nops, core_cq_tag(), nullptr);
 
     if (err != GRPC_CALL_OK) {
       // A failure here indicates an API misuse; for example, doing a Write
       // while another Write is already pending on the same RPC or invoking
       // WritesDone multiple times
-      // gpr_log(GPR_ERROR, "API misuse of type %s observed",
-      //        g_core_codegen_interface->grpc_call_error_to_string(err));
-      GPR_CODEGEN_ASSERT(false);
+      gpr_log(GPR_ERROR, "API misuse of type %s observed",
+              grpc_call_error_to_string(err));
+      GPR_ASSERT(false);
     }
   }
 
@@ -996,9 +984,8 @@ class CallOpSet : public CallOpSetInterface,
     done_intercepting_ = true;
     // The following call_start_batch is internally-generated so no need for an
     // explanatory log on failure.
-    GPR_CODEGEN_ASSERT(g_core_codegen_interface->grpc_call_start_batch(
-                           call_.call(), nullptr, 0, core_cq_tag(), nullptr) ==
-                       GRPC_CALL_OK);
+    GPR_ASSERT(grpc_call_start_batch(call_.call(), nullptr, 0, core_cq_tag(),
+                                     nullptr) == GRPC_CALL_OK);
   }
 
  private:
@@ -1046,4 +1033,4 @@ class CallOpSet : public CallOpSetInterface,
 }  // namespace internal
 }  // namespace grpc
 
-#endif  // GRPCPP_IMPL_CODEGEN_CALL_OP_SET_H
+#endif  // GRPCPP_IMPL_CALL_OP_SET_H
diff --git a/contrib/libs/grpc/include/grpcpp/impl/call_op_set_interface.h b/contrib/libs/grpc/include/grpcpp/impl/call_op_set_interface.h
index 43ed4ed94d..c9667bd391 100644
--- a/contrib/libs/grpc/include/grpcpp/impl/call_op_set_interface.h
+++ b/contrib/libs/grpc/include/grpcpp/impl/call_op_set_interface.h
@@ -1,27 +1,27 @@
-/*
- *
- * Copyright 2018 gRPC authors.
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
- */
+//
+//
+// Copyright 2018 gRPC authors.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+//
 
 #ifndef GRPCPP_IMPL_CALL_OP_SET_INTERFACE_H
 #define GRPCPP_IMPL_CALL_OP_SET_INTERFACE_H
 
 // IWYU pragma: private
 
-#include <grpcpp/impl/codegen/completion_queue_tag.h>
+#include <grpcpp/impl/completion_queue_tag.h>
 
 namespace grpc {
 namespace internal {
diff --git a/contrib/libs/grpc/include/grpcpp/impl/channel_argument_option.h b/contrib/libs/grpc/include/grpcpp/impl/channel_argument_option.h
index 6e93199694..bf91845a29 100644
--- a/contrib/libs/grpc/include/grpcpp/impl/channel_argument_option.h
+++ b/contrib/libs/grpc/include/grpcpp/impl/channel_argument_option.h
@@ -1,20 +1,20 @@
-/*
- *
- * Copyright 2017 gRPC authors.
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
- */
+//
+//
+// Copyright 2017 gRPC authors.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+//
 
 #ifndef GRPCPP_IMPL_CHANNEL_ARGUMENT_OPTION_H
 #define GRPCPP_IMPL_CHANNEL_ARGUMENT_OPTION_H
@@ -31,6 +31,8 @@ std::unique_ptr<ServerBuilderOption> MakeChannelArgumentOption(
     const TString& name, const TString& value);
 std::unique_ptr<ServerBuilderOption> MakeChannelArgumentOption(
     const TString& name, int value);
+std::unique_ptr<ServerBuilderOption> MakeChannelArgumentOption(
+    const TString& name, void* value);
 
 }  // namespace grpc
 
diff --git a/contrib/libs/grpc/include/grpcpp/impl/channel_interface.h b/contrib/libs/grpc/include/grpcpp/impl/channel_interface.h
new file mode 100644
index 0000000000..48d9661f6f
--- /dev/null
+++ b/contrib/libs/grpc/include/grpcpp/impl/channel_interface.h
@@ -0,0 +1,170 @@
+//
+//
+// Copyright 2016 gRPC authors.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+//
+
+#ifndef GRPCPP_IMPL_CHANNEL_INTERFACE_H
+#define GRPCPP_IMPL_CHANNEL_INTERFACE_H
+
+#include <grpc/impl/connectivity_state.h>
+#include <grpcpp/impl/call.h>
+#include <grpcpp/support/status.h>
+#include <grpcpp/support/time.h>
+
+namespace grpc {
+template <class R>
+class ClientReader;
+template <class W>
+class ClientWriter;
+template <class W, class R>
+class ClientReaderWriter;
+namespace internal {
+template <class InputMessage, class OutputMessage>
+class CallbackUnaryCallImpl;
+template <class R>
+class ClientAsyncReaderFactory;
+template <class W>
+class ClientAsyncWriterFactory;
+template <class W, class R>
+class ClientAsyncReaderWriterFactory;
+class ClientAsyncResponseReaderHelper;
+template <class W, class R>
+class ClientCallbackReaderWriterFactory;
+template <class R>
+class ClientCallbackReaderFactory;
+template <class W>
+class ClientCallbackWriterFactory;
+class ClientCallbackUnaryFactory;
+}  // namespace internal
+
+class ChannelInterface;
+class ClientContext;
+class CompletionQueue;
+
+namespace experimental {
+class DelegatingChannel;
+}
+
+namespace internal {
+class Call;
+class CallOpSetInterface;
+class RpcMethod;
+class InterceptedChannel;
+template <class InputMessage, class OutputMessage>
+class BlockingUnaryCallImpl;
+}  // namespace internal
+
+/// Codegen interface for \a grpc::Channel.
+class ChannelInterface {
+ public:
+  virtual ~ChannelInterface() {}
+  /// Get the current channel state. If the channel is in IDLE and
+  /// \a try_to_connect is set to true, try to connect.
+  virtual grpc_connectivity_state GetState(bool try_to_connect) = 0;
+
+  /// Return the \a tag on \a cq when the channel state is changed or \a
+  /// deadline expires. \a GetState needs to called to get the current state.
+  template <typename T>
+  void NotifyOnStateChange(grpc_connectivity_state last_observed, T deadline,
+                           grpc::CompletionQueue* cq, void* tag) {
+    TimePoint<T> deadline_tp(deadline);
+    NotifyOnStateChangeImpl(last_observed, deadline_tp.raw_time(), cq, tag);
+  }
+
+  /// Blocking wait for channel state change or \a deadline expiration.
+  /// \a GetState needs to called to get the current state.
+  template <typename T>
+  bool WaitForStateChange(grpc_connectivity_state last_observed, T deadline) {
+    TimePoint<T> deadline_tp(deadline);
+    return WaitForStateChangeImpl(last_observed, deadline_tp.raw_time());
+  }
+
+  /// Wait for this channel to be connected
+  template <typename T>
+  bool WaitForConnected(T deadline) {
+    grpc_connectivity_state state;
+    while ((state = GetState(true)) != GRPC_CHANNEL_READY) {
+      if (!WaitForStateChange(state, deadline)) return false;
+    }
+    return true;
+  }
+
+ private:
+  template <class R>
+  friend class grpc::ClientReader;
+  template <class W>
+  friend class grpc::ClientWriter;
+  template <class W, class R>
+  friend class grpc::ClientReaderWriter;
+  template <class R>
+  friend class grpc::internal::ClientAsyncReaderFactory;
+  template <class W>
+  friend class grpc::internal::ClientAsyncWriterFactory;
+  template <class W, class R>
+  friend class grpc::internal::ClientAsyncReaderWriterFactory;
+  friend class grpc::internal::ClientAsyncResponseReaderHelper;
+  template <class W, class R>
+  friend class grpc::internal::ClientCallbackReaderWriterFactory;
+  template <class R>
+  friend class grpc::internal::ClientCallbackReaderFactory;
+  template <class W>
+  friend class grpc::internal::ClientCallbackWriterFactory;
+  friend class grpc::internal::ClientCallbackUnaryFactory;
+  template <class InputMessage, class OutputMessage>
+  friend class grpc::internal::BlockingUnaryCallImpl;
+  template <class InputMessage, class OutputMessage>
+  friend class grpc::internal::CallbackUnaryCallImpl;
+  friend class grpc::internal::RpcMethod;
+  friend class grpc::experimental::DelegatingChannel;
+  friend class grpc::internal::InterceptedChannel;
+  virtual internal::Call CreateCall(const internal::RpcMethod& method,
+                                    grpc::ClientContext* context,
+                                    grpc::CompletionQueue* cq) = 0;
+  virtual void PerformOpsOnCall(internal::CallOpSetInterface* ops,
+                                internal::Call* call) = 0;
+  virtual void* RegisterMethod(const char* method) = 0;
+  virtual void NotifyOnStateChangeImpl(grpc_connectivity_state last_observed,
+                                       gpr_timespec deadline,
+                                       grpc::CompletionQueue* cq,
+                                       void* tag) = 0;
+  virtual bool WaitForStateChangeImpl(grpc_connectivity_state last_observed,
+                                      gpr_timespec deadline) = 0;
+
+  // EXPERIMENTAL
+  // This is needed to keep codegen_test_minimal happy. InterceptedChannel needs
+  // to make use of this but can't directly call Channel's implementation
+  // because of the test.
+  // Returns an empty Call object (rather than being pure) since this is a new
+  // method and adding a new pure method to an interface would be a breaking
+  // change (even though this is private and non-API)
+  virtual internal::Call CreateCallInternal(
+      const internal::RpcMethod& /*method*/, grpc::ClientContext* /*context*/,
+      grpc::CompletionQueue* /*cq*/, size_t /*interceptor_pos*/) {
+    return internal::Call();
+  }
+
+  // A method to get the callbackable completion queue associated with this
+  // channel. If the return value is nullptr, this channel doesn't support
+  // callback operations.
+  // TODO(vjpai): Consider a better default like using a global CQ
+  // Returns nullptr (rather than being pure) since this is a post-1.0 method
+  // and adding a new pure method to an interface would be a breaking change
+  // (even though this is private and non-API)
+  virtual grpc::CompletionQueue* CallbackCQ() { return nullptr; }
+};
+}  // namespace grpc
+
+#endif  // GRPCPP_IMPL_CHANNEL_INTERFACE_H
diff --git a/contrib/libs/grpc/include/grpcpp/impl/codegen/client_unary_call.h b/contrib/libs/grpc/include/grpcpp/impl/client_unary_call.h
index 86adb3e33e..c2fdcd99a3 100644
--- a/contrib/libs/grpc/include/grpcpp/impl/codegen/client_unary_call.h
+++ b/contrib/libs/grpc/include/grpcpp/impl/client_unary_call.h
@@ -1,32 +1,29 @@
-/*
- *
- * Copyright 2015 gRPC authors.
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
- */
+//
+//
+// Copyright 2015 gRPC authors.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+//
 
-#ifndef GRPCPP_IMPL_CODEGEN_CLIENT_UNARY_CALL_H
-#define GRPCPP_IMPL_CODEGEN_CLIENT_UNARY_CALL_H
+#ifndef GRPCPP_IMPL_CLIENT_UNARY_CALL_H
+#define GRPCPP_IMPL_CLIENT_UNARY_CALL_H
 
-// IWYU pragma: private, include <grpcpp/impl/client_unary_call.h>
-
-#include <grpcpp/impl/codegen/call.h>
-#include <grpcpp/impl/codegen/call_op_set.h>
-#include <grpcpp/impl/codegen/channel_interface.h>
-#include <grpcpp/impl/codegen/config.h>
-#include <grpcpp/impl/codegen/core_codegen_interface.h>
-#include <grpcpp/impl/codegen/status.h>
+#include <grpcpp/impl/call.h>
+#include <grpcpp/impl/call_op_set.h>
+#include <grpcpp/impl/channel_interface.h>
+#include <grpcpp/support/config.h>
+#include <grpcpp/support/status.h>
 
 namespace grpc {
 
@@ -102,4 +99,4 @@ class BlockingUnaryCallImpl {
 }  // namespace internal
 }  // namespace grpc
 
-#endif  // GRPCPP_IMPL_CODEGEN_CLIENT_UNARY_CALL_H
+#endif  // GRPCPP_IMPL_CLIENT_UNARY_CALL_H
diff --git a/contrib/libs/grpc/include/grpcpp/impl/codegen/async_generic_service.h b/contrib/libs/grpc/include/grpcpp/impl/codegen/async_generic_service.h
deleted file mode 100644
index 03a096c52b..0000000000
--- a/contrib/libs/grpc/include/grpcpp/impl/codegen/async_generic_service.h
+++ /dev/null
@@ -1,27 +0,0 @@
-/*
- *
- * Copyright 2015 gRPC authors.
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
- */
-
-#ifndef GRPCPP_IMPL_CODEGEN_ASYNC_GENERIC_SERVICE_H
-#define GRPCPP_IMPL_CODEGEN_ASYNC_GENERIC_SERVICE_H
-
-// IWYU pragma: private
-
-/// TODO(chengyuc): Remove this file after solving compatibility.
-#include <grpcpp/generic/async_generic_service.h>
-
-#endif  // GRPCPP_IMPL_CODEGEN_ASYNC_GENERIC_SERVICE_H
diff --git a/contrib/libs/grpc/include/grpcpp/impl/codegen/async_stream.h b/contrib/libs/grpc/include/grpcpp/impl/codegen/async_stream.h
index 524f619f81..e10bc8c219 100644
--- a/contrib/libs/grpc/include/grpcpp/impl/codegen/async_stream.h
+++ b/contrib/libs/grpc/include/grpcpp/impl/codegen/async_stream.h
@@ -1,19 +1,19 @@
-/*
- *
- * Copyright 2019 gRPC authors.
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
+//
+//
+// Copyright 2019 gRPC authors.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
 
 #ifndef GRPCPP_IMPL_CODEGEN_ASYNC_STREAM_H
 #define GRPCPP_IMPL_CODEGEN_ASYNC_STREAM_H
diff --git a/contrib/libs/grpc/include/grpcpp/impl/codegen/async_unary_call.h b/contrib/libs/grpc/include/grpcpp/impl/codegen/async_unary_call.h
deleted file mode 100644
index 55227b2e4a..0000000000
--- a/contrib/libs/grpc/include/grpcpp/impl/codegen/async_unary_call.h
+++ /dev/null
@@ -1,27 +0,0 @@
-/*
- *
- * Copyright 2015 gRPC authors.
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
- */
-
-#ifndef GRPCPP_IMPL_CODEGEN_ASYNC_UNARY_CALL_H
-#define GRPCPP_IMPL_CODEGEN_ASYNC_UNARY_CALL_H
-
-// IWYU pragma: private
-
-/// TODO(chengyuc): Remove this file after solving compatibility.
-#include <grpcpp/support/async_unary_call.h>
-
-#endif  // GRPCPP_IMPL_CODEGEN_ASYNC_UNARY_CALL_H
diff --git a/contrib/libs/grpc/include/grpcpp/impl/codegen/byte_buffer.h b/contrib/libs/grpc/include/grpcpp/impl/codegen/byte_buffer.h
index d196995392..4e01e92f35 100644
--- a/contrib/libs/grpc/include/grpcpp/impl/codegen/byte_buffer.h
+++ b/contrib/libs/grpc/include/grpcpp/impl/codegen/byte_buffer.h
@@ -1,20 +1,20 @@
-/*
- *
- * Copyright 2017 gRPC authors.
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
- */
+//
+//
+// Copyright 2017 gRPC authors.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+//
 
 #ifndef GRPCPP_IMPL_CODEGEN_BYTE_BUFFER_H
 #define GRPCPP_IMPL_CODEGEN_BYTE_BUFFER_H
diff --git a/contrib/libs/grpc/include/grpcpp/impl/codegen/call.h b/contrib/libs/grpc/include/grpcpp/impl/codegen/call.h
deleted file mode 100644
index 71f6cb8e4e..0000000000
--- a/contrib/libs/grpc/include/grpcpp/impl/codegen/call.h
+++ /dev/null
@@ -1,26 +0,0 @@
-/*
- *
- * Copyright 2018 gRPC authors.
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
- */
-#ifndef GRPCPP_IMPL_CODEGEN_CALL_H
-#define GRPCPP_IMPL_CODEGEN_CALL_H
-
-// IWYU pragma: private
-
-/// TODO(chengyuc): Remove this file after solving compatibility.
-#include <grpcpp/impl/call.h>
-
-#endif  // GRPCPP_IMPL_CODEGEN_CALL_H
diff --git a/contrib/libs/grpc/include/grpcpp/impl/codegen/call_hook.h b/contrib/libs/grpc/include/grpcpp/impl/codegen/call_hook.h
deleted file mode 100644
index db10a0fc2b..0000000000
--- a/contrib/libs/grpc/include/grpcpp/impl/codegen/call_hook.h
+++ /dev/null
@@ -1,27 +0,0 @@
-/*
- *
- * Copyright 2015 gRPC authors.
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
- */
-
-#ifndef GRPCPP_IMPL_CODEGEN_CALL_HOOK_H
-#define GRPCPP_IMPL_CODEGEN_CALL_HOOK_H
-
-// IWYU pragma: private
-
-/// TODO(chengyuc): Remove this file after solving compatibility.
-#include <grpcpp/impl/call_hook.h>
-
-#endif  // GRPCPP_IMPL_CODEGEN_CALL_HOOK_H
diff --git a/contrib/libs/grpc/include/grpcpp/impl/codegen/call_op_set_interface.h b/contrib/libs/grpc/include/grpcpp/impl/codegen/call_op_set_interface.h
deleted file mode 100644
index ce5f2036d1..0000000000
--- a/contrib/libs/grpc/include/grpcpp/impl/codegen/call_op_set_interface.h
+++ /dev/null
@@ -1,26 +0,0 @@
-/*
- *
- * Copyright 2018 gRPC authors.
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
- */
-
-#ifndef GRPCPP_IMPL_CODEGEN_CALL_OP_SET_INTERFACE_H
-#define GRPCPP_IMPL_CODEGEN_CALL_OP_SET_INTERFACE_H
-
-// IWYU pragma: private
-
-#include <grpcpp/impl/call_op_set_interface.h>
-
-#endif  // GRPCPP_IMPL_CODEGEN_CALL_OP_SET_INTERFACE_H
diff --git a/contrib/libs/grpc/include/grpcpp/impl/codegen/channel_interface.h b/contrib/libs/grpc/include/grpcpp/impl/codegen/channel_interface.h
index a3f162cc87..2464409d5d 100644
--- a/contrib/libs/grpc/include/grpcpp/impl/codegen/channel_interface.h
+++ b/contrib/libs/grpc/include/grpcpp/impl/codegen/channel_interface.h
@@ -1,20 +1,20 @@
-/*
- *
- * Copyright 2016 gRPC authors.
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
- */
+//
+//
+// Copyright 2016 gRPC authors.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+//
 
 #if defined(__GNUC__)
 #pragma GCC system_header
@@ -25,152 +25,7 @@
 
 // IWYU pragma: private
 
-#include <grpc/impl/codegen/connectivity_state.h>
-#include <grpcpp/impl/call.h>
-#include <grpcpp/impl/codegen/status.h>
-#include <grpcpp/impl/codegen/time.h>
-
-namespace grpc {
-template <class R>
-class ClientReader;
-template <class W>
-class ClientWriter;
-template <class W, class R>
-class ClientReaderWriter;
-namespace internal {
-template <class InputMessage, class OutputMessage>
-class CallbackUnaryCallImpl;
-template <class R>
-class ClientAsyncReaderFactory;
-template <class W>
-class ClientAsyncWriterFactory;
-template <class W, class R>
-class ClientAsyncReaderWriterFactory;
-class ClientAsyncResponseReaderHelper;
-template <class W, class R>
-class ClientCallbackReaderWriterFactory;
-template <class R>
-class ClientCallbackReaderFactory;
-template <class W>
-class ClientCallbackWriterFactory;
-class ClientCallbackUnaryFactory;
-}  // namespace internal
-
-class ChannelInterface;
-class ClientContext;
-class CompletionQueue;
-
-namespace experimental {
-class DelegatingChannel;
-}
-
-namespace internal {
-class Call;
-class CallOpSetInterface;
-class RpcMethod;
-class InterceptedChannel;
-template <class InputMessage, class OutputMessage>
-class BlockingUnaryCallImpl;
-}  // namespace internal
-
-/// Codegen interface for \a grpc::Channel.
-class ChannelInterface {
- public:
-  virtual ~ChannelInterface() {}
-  /// Get the current channel state. If the channel is in IDLE and
-  /// \a try_to_connect is set to true, try to connect.
-  virtual grpc_connectivity_state GetState(bool try_to_connect) = 0;
-
-  /// Return the \a tag on \a cq when the channel state is changed or \a
-  /// deadline expires. \a GetState needs to called to get the current state.
-  template <typename T>
-  void NotifyOnStateChange(grpc_connectivity_state last_observed, T deadline,
-                           grpc::CompletionQueue* cq, void* tag) {
-    TimePoint<T> deadline_tp(deadline);
-    NotifyOnStateChangeImpl(last_observed, deadline_tp.raw_time(), cq, tag);
-  }
-
-  /// Blocking wait for channel state change or \a deadline expiration.
-  /// \a GetState needs to called to get the current state.
-  template <typename T>
-  bool WaitForStateChange(grpc_connectivity_state last_observed, T deadline) {
-    TimePoint<T> deadline_tp(deadline);
-    return WaitForStateChangeImpl(last_observed, deadline_tp.raw_time());
-  }
-
-  /// Wait for this channel to be connected
-  template <typename T>
-  bool WaitForConnected(T deadline) {
-    grpc_connectivity_state state;
-    while ((state = GetState(true)) != GRPC_CHANNEL_READY) {
-      if (!WaitForStateChange(state, deadline)) return false;
-    }
-    return true;
-  }
-
- private:
-  template <class R>
-  friend class grpc::ClientReader;
-  template <class W>
-  friend class grpc::ClientWriter;
-  template <class W, class R>
-  friend class grpc::ClientReaderWriter;
-  template <class R>
-  friend class grpc::internal::ClientAsyncReaderFactory;
-  template <class W>
-  friend class grpc::internal::ClientAsyncWriterFactory;
-  template <class W, class R>
-  friend class grpc::internal::ClientAsyncReaderWriterFactory;
-  friend class grpc::internal::ClientAsyncResponseReaderHelper;
-  template <class W, class R>
-  friend class grpc::internal::ClientCallbackReaderWriterFactory;
-  template <class R>
-  friend class grpc::internal::ClientCallbackReaderFactory;
-  template <class W>
-  friend class grpc::internal::ClientCallbackWriterFactory;
-  friend class grpc::internal::ClientCallbackUnaryFactory;
-  template <class InputMessage, class OutputMessage>
-  friend class grpc::internal::BlockingUnaryCallImpl;
-  template <class InputMessage, class OutputMessage>
-  friend class grpc::internal::CallbackUnaryCallImpl;
-  friend class grpc::internal::RpcMethod;
-  friend class grpc::experimental::DelegatingChannel;
-  friend class grpc::internal::InterceptedChannel;
-  virtual internal::Call CreateCall(const internal::RpcMethod& method,
-                                    grpc::ClientContext* context,
-                                    grpc::CompletionQueue* cq) = 0;
-  virtual void PerformOpsOnCall(internal::CallOpSetInterface* ops,
-                                internal::Call* call) = 0;
-  virtual void* RegisterMethod(const char* method) = 0;
-  virtual void NotifyOnStateChangeImpl(grpc_connectivity_state last_observed,
-                                       gpr_timespec deadline,
-                                       grpc::CompletionQueue* cq,
-                                       void* tag) = 0;
-  virtual bool WaitForStateChangeImpl(grpc_connectivity_state last_observed,
-                                      gpr_timespec deadline) = 0;
-
-  // EXPERIMENTAL
-  // This is needed to keep codegen_test_minimal happy. InterceptedChannel needs
-  // to make use of this but can't directly call Channel's implementation
-  // because of the test.
-  // Returns an empty Call object (rather than being pure) since this is a new
-  // method and adding a new pure method to an interface would be a breaking
-  // change (even though this is private and non-API)
-  virtual internal::Call CreateCallInternal(
-      const internal::RpcMethod& /*method*/, grpc::ClientContext* /*context*/,
-      grpc::CompletionQueue* /*cq*/, size_t /*interceptor_pos*/) {
-    return internal::Call();
-  }
-
-  // A method to get the callbackable completion queue associated with this
-  // channel. If the return value is nullptr, this channel doesn't support
-  // callback operations.
-  // TODO(vjpai): Consider a better default like using a global CQ
-  // Returns nullptr (rather than being pure) since this is a post-1.0 method
-  // and adding a new pure method to an interface would be a breaking change
-  // (even though this is private and non-API)
-  virtual grpc::CompletionQueue* CallbackCQ() { return nullptr; }
-};
-}  // namespace grpc
+/// TODO(chengyuc): Remove this file after solving compatibility.
+#include <grpcpp/impl/channel_interface.h>
 
 #endif  // GRPCPP_IMPL_CODEGEN_CHANNEL_INTERFACE_H
diff --git a/contrib/libs/grpc/include/grpcpp/impl/codegen/client_callback.h b/contrib/libs/grpc/include/grpcpp/impl/codegen/client_callback.h
deleted file mode 100644
index 06fef2e929..0000000000
--- a/contrib/libs/grpc/include/grpcpp/impl/codegen/client_callback.h
+++ /dev/null
@@ -1,1229 +0,0 @@
-/*
- *
- * Copyright 2019 gRPC authors.
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-#ifndef GRPCPP_IMPL_CODEGEN_CLIENT_CALLBACK_H
-#define GRPCPP_IMPL_CODEGEN_CLIENT_CALLBACK_H
-
-// IWYU pragma: private, include <grpcpp/support/client_callback.h>
-
-#include <atomic>
-#include <functional>
-
-#include <grpcpp/impl/codegen/call.h>
-#include <grpcpp/impl/codegen/call_op_set.h>
-#include <grpcpp/impl/codegen/callback_common.h>
-#include <grpcpp/impl/codegen/channel_interface.h>
-#include <grpcpp/impl/codegen/config.h>
-#include <grpcpp/impl/codegen/core_codegen_interface.h>
-#include <grpcpp/impl/codegen/status.h>
-#include <grpcpp/impl/codegen/sync.h>
-
-namespace grpc {
-class Channel;
-class ClientContext;
-
-namespace internal {
-class RpcMethod;
-
-/// Perform a callback-based unary call.  May optionally specify the base
-/// class of the Request and Response so that the internal calls and structures
-/// below this may be based on those base classes and thus achieve code reuse
-/// across different RPCs (e.g., for protobuf, MessageLite would be a base
-/// class).
-/// TODO(vjpai): Combine as much as possible with the blocking unary call code
-template <class InputMessage, class OutputMessage,
-          class BaseInputMessage = InputMessage,
-          class BaseOutputMessage = OutputMessage>
-void CallbackUnaryCall(grpc::ChannelInterface* channel,
-                       const grpc::internal::RpcMethod& method,
-                       grpc::ClientContext* context,
-                       const InputMessage* request, OutputMessage* result,
-                       std::function<void(grpc::Status)> on_completion) {
-  static_assert(std::is_base_of<BaseInputMessage, InputMessage>::value,
-                "Invalid input message specification");
-  static_assert(std::is_base_of<BaseOutputMessage, OutputMessage>::value,
-                "Invalid output message specification");
-  CallbackUnaryCallImpl<BaseInputMessage, BaseOutputMessage> x(
-      channel, method, context, request, result, on_completion);
-}
-
-template <class InputMessage, class OutputMessage>
-class CallbackUnaryCallImpl {
- public:
-  CallbackUnaryCallImpl(grpc::ChannelInterface* channel,
-                        const grpc::internal::RpcMethod& method,
-                        grpc::ClientContext* context,
-                        const InputMessage* request, OutputMessage* result,
-                        std::function<void(grpc::Status)> on_completion) {
-    grpc::CompletionQueue* cq = channel->CallbackCQ();
-    GPR_CODEGEN_ASSERT(cq != nullptr);
-    grpc::internal::Call call(channel->CreateCall(method, context, cq));
-
-    using FullCallOpSet = grpc::internal::CallOpSet<
-        grpc::internal::CallOpSendInitialMetadata,
-        grpc::internal::CallOpSendMessage,
-        grpc::internal::CallOpRecvInitialMetadata,
-        grpc::internal::CallOpRecvMessage<OutputMessage>,
-        grpc::internal::CallOpClientSendClose,
-        grpc::internal::CallOpClientRecvStatus>;
-
-    struct OpSetAndTag {
-      FullCallOpSet opset;
-      grpc::internal::CallbackWithStatusTag tag;
-    };
-    const size_t alloc_sz = sizeof(OpSetAndTag);
-    auto* const alloced = static_cast<OpSetAndTag*>(
-        grpc::g_core_codegen_interface->grpc_call_arena_alloc(call.call(),
-                                                              alloc_sz));
-    auto* ops = new (&alloced->opset) FullCallOpSet;
-    auto* tag = new (&alloced->tag)
-        grpc::internal::CallbackWithStatusTag(call.call(), on_completion, ops);
-
-    // TODO(vjpai): Unify code with sync API as much as possible
-    grpc::Status s = ops->SendMessagePtr(request);
-    if (!s.ok()) {
-      tag->force_run(s);
-      return;
-    }
-    ops->SendInitialMetadata(&context->send_initial_metadata_,
-                             context->initial_metadata_flags());
-    ops->RecvInitialMetadata(context);
-    ops->RecvMessage(result);
-    ops->AllowNoMessage();
-    ops->ClientSendClose();
-    ops->ClientRecvStatus(context, tag->status_ptr());
-    ops->set_core_cq_tag(tag);
-    call.PerformOps(ops);
-  }
-};
-
-// Base class for public API classes.
-class ClientReactor {
- public:
-  virtual ~ClientReactor() = default;
-
-  /// Called by the library when all operations associated with this RPC have
-  /// completed and all Holds have been removed. OnDone provides the RPC status
-  /// outcome for both successful and failed RPCs. If it is never called on an
-  /// RPC, it indicates an application-level problem (like failure to remove a
-  /// hold).
-  ///
-  /// \param[in] s The status outcome of this RPC
-  virtual void OnDone(const grpc::Status& /*s*/) = 0;
-
-  /// InternalScheduleOnDone is not part of the API and is not meant to be
-  /// overridden. It is virtual to allow successful builds for certain bazel
-  /// build users that only want to depend on gRPC codegen headers and not the
-  /// full library (although this is not a generally-supported option). Although
-  /// the virtual call is slower than a direct call, this function is
-  /// heavyweight and the cost of the virtual call is not much in comparison.
-  /// This function may be removed or devirtualized in the future.
-  virtual void InternalScheduleOnDone(grpc::Status s);
-
-  /// InternalTrailersOnly is not part of the API and is not meant to be
-  /// overridden. It is virtual to allow successful builds for certain bazel
-  /// build users that only want to depend on gRPC codegen headers and not the
-  /// full library (although this is not a generally-supported option). Although
-  /// the virtual call is slower than a direct call, this function is
-  /// heavyweight and the cost of the virtual call is not much in comparison.
-  /// This function may be removed or devirtualized in the future.
-  virtual bool InternalTrailersOnly(const grpc_call* call) const;
-};
-
-}  // namespace internal
-
-// Forward declarations
-template <class Request, class Response>
-class ClientBidiReactor;
-template <class Response>
-class ClientReadReactor;
-template <class Request>
-class ClientWriteReactor;
-class ClientUnaryReactor;
-
-// NOTE: The streaming objects are not actually implemented in the public API.
-//       These interfaces are provided for mocking only. Typical applications
-//       will interact exclusively with the reactors that they define.
-template <class Request, class Response>
-class ClientCallbackReaderWriter {
- public:
-  virtual ~ClientCallbackReaderWriter() {}
-  virtual void StartCall() = 0;
-  virtual void Write(const Request* req, grpc::WriteOptions options) = 0;
-  virtual void WritesDone() = 0;
-  virtual void Read(Response* resp) = 0;
-  virtual void AddHold(int holds) = 0;
-  virtual void RemoveHold() = 0;
-
- protected:
-  void BindReactor(ClientBidiReactor<Request, Response>* reactor) {
-    reactor->BindStream(this);
-  }
-};
-
-template <class Response>
-class ClientCallbackReader {
- public:
-  virtual ~ClientCallbackReader() {}
-  virtual void StartCall() = 0;
-  virtual void Read(Response* resp) = 0;
-  virtual void AddHold(int holds) = 0;
-  virtual void RemoveHold() = 0;
-
- protected:
-  void BindReactor(ClientReadReactor<Response>* reactor) {
-    reactor->BindReader(this);
-  }
-};
-
-template <class Request>
-class ClientCallbackWriter {
- public:
-  virtual ~ClientCallbackWriter() {}
-  virtual void StartCall() = 0;
-  void Write(const Request* req) { Write(req, grpc::WriteOptions()); }
-  virtual void Write(const Request* req, grpc::WriteOptions options) = 0;
-  void WriteLast(const Request* req, grpc::WriteOptions options) {
-    Write(req, options.set_last_message());
-  }
-  virtual void WritesDone() = 0;
-
-  virtual void AddHold(int holds) = 0;
-  virtual void RemoveHold() = 0;
-
- protected:
-  void BindReactor(ClientWriteReactor<Request>* reactor) {
-    reactor->BindWriter(this);
-  }
-};
-
-class ClientCallbackUnary {
- public:
-  virtual ~ClientCallbackUnary() {}
-  virtual void StartCall() = 0;
-
- protected:
-  void BindReactor(ClientUnaryReactor* reactor);
-};
-
-// The following classes are the reactor interfaces that are to be implemented
-// by the user. They are passed in to the library as an argument to a call on a
-// stub (either a codegen-ed call or a generic call). The streaming RPC is
-// activated by calling StartCall, possibly after initiating StartRead,
-// StartWrite, or AddHold operations on the streaming object. Note that none of
-// the classes are pure; all reactions have a default empty reaction so that the
-// user class only needs to override those reactions that it cares about.
-// The reactor must be passed to the stub invocation before any of the below
-// operations can be called and its reactions will be invoked by the library in
-// response to the completion of various operations. Reactions must not include
-// blocking operations (such as blocking I/O, starting synchronous RPCs, or
-// waiting on condition variables). Reactions may be invoked concurrently,
-// except that OnDone is called after all others (assuming proper API usage).
-// The reactor may not be deleted until OnDone is called.
-
-/// \a ClientBidiReactor is the interface for a bidirectional streaming RPC.
-template <class Request, class Response>
-class ClientBidiReactor : public internal::ClientReactor {
- public:
-  /// Activate the RPC and initiate any reads or writes that have been Start'ed
-  /// before this call. All streaming RPCs issued by the client MUST have
-  /// StartCall invoked on them (even if they are canceled) as this call is the
-  /// activation of their lifecycle.
-  void StartCall() { stream_->StartCall(); }
-
-  /// Initiate a read operation (or post it for later initiation if StartCall
-  /// has not yet been invoked).
-  ///
-  /// \param[out] resp Where to eventually store the read message. Valid when
-  ///                  the library calls OnReadDone
-  void StartRead(Response* resp) { stream_->Read(resp); }
-
-  /// Initiate a write operation (or post it for later initiation if StartCall
-  /// has not yet been invoked).
-  ///
-  /// \param[in] req The message to be written. The library does not take
-  ///                ownership but the caller must ensure that the message is
-  ///                not deleted or modified until OnWriteDone is called.
-  void StartWrite(const Request* req) { StartWrite(req, grpc::WriteOptions()); }
-
-  /// Initiate/post a write operation with specified options.
-  ///
-  /// \param[in] req The message to be written. The library does not take
-  ///                ownership but the caller must ensure that the message is
-  ///                not deleted or modified until OnWriteDone is called.
-  /// \param[in] options The WriteOptions to use for writing this message
-  void StartWrite(const Request* req, grpc::WriteOptions options) {
-    stream_->Write(req, options);
-  }
-
-  /// Initiate/post a write operation with specified options and an indication
-  /// that this is the last write (like StartWrite and StartWritesDone, merged).
-  /// Note that calling this means that no more calls to StartWrite,
-  /// StartWriteLast, or StartWritesDone are allowed.
-  ///
-  /// \param[in] req The message to be written. The library does not take
-  ///                ownership but the caller must ensure that the message is
-  ///                not deleted or modified until OnWriteDone is called.
-  /// \param[in] options The WriteOptions to use for writing this message
-  void StartWriteLast(const Request* req, grpc::WriteOptions options) {
-    StartWrite(req, options.set_last_message());
-  }
-
-  /// Indicate that the RPC will have no more write operations. This can only be
-  /// issued once for a given RPC. This is not required or allowed if
-  /// StartWriteLast is used since that already has the same implication.
-  /// Note that calling this means that no more calls to StartWrite,
-  /// StartWriteLast, or StartWritesDone are allowed.
-  void StartWritesDone() { stream_->WritesDone(); }
-
-  /// Holds are needed if (and only if) this stream has operations that take
-  /// place on it after StartCall but from outside one of the reactions
-  /// (OnReadDone, etc). This is _not_ a common use of the streaming API.
-  ///
-  /// Holds must be added before calling StartCall. If a stream still has a hold
-  /// in place, its resources will not be destroyed even if the status has
-  /// already come in from the wire and there are currently no active callbacks
-  /// outstanding. Similarly, the stream will not call OnDone if there are still
-  /// holds on it.
-  ///
-  /// For example, if a StartRead or StartWrite operation is going to be
-  /// initiated from elsewhere in the application, the application should call
-  /// AddHold or AddMultipleHolds before StartCall.  If there is going to be,
-  /// for example, a read-flow and a write-flow taking place outside the
-  /// reactions, then call AddMultipleHolds(2) before StartCall. When the
-  /// application knows that it won't issue any more read operations (such as
-  /// when a read comes back as not ok), it should issue a RemoveHold(). It
-  /// should also call RemoveHold() again after it does StartWriteLast or
-  /// StartWritesDone that indicates that there will be no more write ops.
-  /// The number of RemoveHold calls must match the total number of AddHold
-  /// calls plus the number of holds added by AddMultipleHolds.
-  /// The argument to AddMultipleHolds must be positive.
-  void AddHold() { AddMultipleHolds(1); }
-  void AddMultipleHolds(int holds) {
-    GPR_CODEGEN_DEBUG_ASSERT(holds > 0);
-    stream_->AddHold(holds);
-  }
-  void RemoveHold() { stream_->RemoveHold(); }
-
-  /// Notifies the application that all operations associated with this RPC
-  /// have completed and all Holds have been removed. OnDone provides the RPC
-  /// status outcome for both successful and failed RPCs and will be called in
-  /// all cases. If it is not called, it indicates an application-level problem
-  /// (like failure to remove a hold).
-  ///
-  /// \param[in] s The status outcome of this RPC
-  void OnDone(const grpc::Status& /*s*/) override {}
-
-  /// Notifies the application that a read of initial metadata from the
-  /// server is done. If the application chooses not to implement this method,
-  /// it can assume that the initial metadata has been read before the first
-  /// call of OnReadDone or OnDone.
-  ///
-  /// \param[in] ok Was the initial metadata read successfully? If false, no
-  ///               new read/write operation will succeed, and any further
-  ///               Start* operations should not be called.
-  virtual void OnReadInitialMetadataDone(bool /*ok*/) {}
-
-  /// Notifies the application that a StartRead operation completed.
-  ///
-  /// \param[in] ok Was it successful? If false, no new read/write operation
-  ///               will succeed, and any further Start* should not be called.
-  virtual void OnReadDone(bool /*ok*/) {}
-
-  /// Notifies the application that a StartWrite or StartWriteLast operation
-  /// completed.
-  ///
-  /// \param[in] ok Was it successful? If false, no new read/write operation
-  ///               will succeed, and any further Start* should not be called.
-  virtual void OnWriteDone(bool /*ok*/) {}
-
-  /// Notifies the application that a StartWritesDone operation completed. Note
-  /// that this is only used on explicit StartWritesDone operations and not for
-  /// those that are implicitly invoked as part of a StartWriteLast.
-  ///
-  /// \param[in] ok Was it successful? If false, the application will later see
-  ///               the failure reflected as a bad status in OnDone and no
-  ///               further Start* should be called.
-  virtual void OnWritesDoneDone(bool /*ok*/) {}
-
- private:
-  friend class ClientCallbackReaderWriter<Request, Response>;
-  void BindStream(ClientCallbackReaderWriter<Request, Response>* stream) {
-    stream_ = stream;
-  }
-  ClientCallbackReaderWriter<Request, Response>* stream_;
-};
-
-/// \a ClientReadReactor is the interface for a server-streaming RPC.
-/// All public methods behave as in ClientBidiReactor.
-template <class Response>
-class ClientReadReactor : public internal::ClientReactor {
- public:
-  void StartCall() { reader_->StartCall(); }
-  void StartRead(Response* resp) { reader_->Read(resp); }
-
-  void AddHold() { AddMultipleHolds(1); }
-  void AddMultipleHolds(int holds) {
-    GPR_CODEGEN_DEBUG_ASSERT(holds > 0);
-    reader_->AddHold(holds);
-  }
-  void RemoveHold() { reader_->RemoveHold(); }
-
-  void OnDone(const grpc::Status& /*s*/) override {}
-  virtual void OnReadInitialMetadataDone(bool /*ok*/) {}
-  virtual void OnReadDone(bool /*ok*/) {}
-
- private:
-  friend class ClientCallbackReader<Response>;
-  void BindReader(ClientCallbackReader<Response>* reader) { reader_ = reader; }
-  ClientCallbackReader<Response>* reader_;
-};
-
-/// \a ClientWriteReactor is the interface for a client-streaming RPC.
-/// All public methods behave as in ClientBidiReactor.
-template <class Request>
-class ClientWriteReactor : public internal::ClientReactor {
- public:
-  void StartCall() { writer_->StartCall(); }
-  void StartWrite(const Request* req) { StartWrite(req, grpc::WriteOptions()); }
-  void StartWrite(const Request* req, grpc::WriteOptions options) {
-    writer_->Write(req, options);
-  }
-  void StartWriteLast(const Request* req, grpc::WriteOptions options) {
-    StartWrite(req, options.set_last_message());
-  }
-  void StartWritesDone() { writer_->WritesDone(); }
-
-  void AddHold() { AddMultipleHolds(1); }
-  void AddMultipleHolds(int holds) {
-    GPR_CODEGEN_DEBUG_ASSERT(holds > 0);
-    writer_->AddHold(holds);
-  }
-  void RemoveHold() { writer_->RemoveHold(); }
-
-  void OnDone(const grpc::Status& /*s*/) override {}
-  virtual void OnReadInitialMetadataDone(bool /*ok*/) {}
-  virtual void OnWriteDone(bool /*ok*/) {}
-  virtual void OnWritesDoneDone(bool /*ok*/) {}
-
- private:
-  friend class ClientCallbackWriter<Request>;
-  void BindWriter(ClientCallbackWriter<Request>* writer) { writer_ = writer; }
-
-  ClientCallbackWriter<Request>* writer_;
-};
-
-/// \a ClientUnaryReactor is a reactor-style interface for a unary RPC.
-/// This is _not_ a common way of invoking a unary RPC. In practice, this
-/// option should be used only if the unary RPC wants to receive initial
-/// metadata without waiting for the response to complete. Most deployments of
-/// RPC systems do not use this option, but it is needed for generality.
-/// All public methods behave as in ClientBidiReactor.
-/// StartCall is included for consistency with the other reactor flavors: even
-/// though there are no StartRead or StartWrite operations to queue before the
-/// call (that is part of the unary call itself) and there is no reactor object
-/// being created as a result of this call, we keep a consistent 2-phase
-/// initiation API among all the reactor flavors.
-class ClientUnaryReactor : public internal::ClientReactor {
- public:
-  void StartCall() { call_->StartCall(); }
-  void OnDone(const grpc::Status& /*s*/) override {}
-  virtual void OnReadInitialMetadataDone(bool /*ok*/) {}
-
- private:
-  friend class ClientCallbackUnary;
-  void BindCall(ClientCallbackUnary* call) { call_ = call; }
-  ClientCallbackUnary* call_;
-};
-
-// Define function out-of-line from class to avoid forward declaration issue
-inline void ClientCallbackUnary::BindReactor(ClientUnaryReactor* reactor) {
-  reactor->BindCall(this);
-}
-
-namespace internal {
-
-// Forward declare factory classes for friendship
-template <class Request, class Response>
-class ClientCallbackReaderWriterFactory;
-template <class Response>
-class ClientCallbackReaderFactory;
-template <class Request>
-class ClientCallbackWriterFactory;
-
-template <class Request, class Response>
-class ClientCallbackReaderWriterImpl
-    : public ClientCallbackReaderWriter<Request, Response> {
- public:
-  // always allocated against a call arena, no memory free required
-  static void operator delete(void* /*ptr*/, std::size_t size) {
-    GPR_CODEGEN_ASSERT(size == sizeof(ClientCallbackReaderWriterImpl));
-  }
-
-  // This operator should never be called as the memory should be freed as part
-  // of the arena destruction. It only exists to provide a matching operator
-  // delete to the operator new so that some compilers will not complain (see
-  // https://github.com/grpc/grpc/issues/11301) Note at the time of adding this
-  // there are no tests catching the compiler warning.
-  static void operator delete(void*, void*) { GPR_CODEGEN_ASSERT(false); }
-
-  void StartCall() Y_ABSL_LOCKS_EXCLUDED(start_mu_) override {
-    // This call initiates two batches, plus any backlog, each with a callback
-    // 1. Send initial metadata (unless corked) + recv initial metadata
-    // 2. Any read backlog
-    // 3. Any write backlog
-    // 4. Recv trailing metadata (unless corked)
-    if (!start_corked_) {
-      start_ops_.SendInitialMetadata(&context_->send_initial_metadata_,
-                                     context_->initial_metadata_flags());
-    }
-
-    call_.PerformOps(&start_ops_);
-
-    {
-      grpc::internal::MutexLock lock(&start_mu_);
-
-      if (backlog_.read_ops) {
-        call_.PerformOps(&read_ops_);
-      }
-      if (backlog_.write_ops) {
-        call_.PerformOps(&write_ops_);
-      }
-      if (backlog_.writes_done_ops) {
-        call_.PerformOps(&writes_done_ops_);
-      }
-      call_.PerformOps(&finish_ops_);
-      // The last thing in this critical section is to set started_ so that it
-      // can be used lock-free as well.
-      started_.store(true, std::memory_order_release);
-    }
-    // MaybeFinish outside the lock to make sure that destruction of this object
-    // doesn't take place while holding the lock (which would cause the lock to
-    // be released after destruction)
-    this->MaybeFinish(/*from_reaction=*/false);
-  }
-
-  void Read(Response* msg) override {
-    read_ops_.RecvMessage(msg);
-    callbacks_outstanding_.fetch_add(1, std::memory_order_relaxed);
-    if (GPR_UNLIKELY(!started_.load(std::memory_order_acquire))) {
-      grpc::internal::MutexLock lock(&start_mu_);
-      if (GPR_LIKELY(!started_.load(std::memory_order_relaxed))) {
-        backlog_.read_ops = true;
-        return;
-      }
-    }
-    call_.PerformOps(&read_ops_);
-  }
-
-  void Write(const Request* msg, grpc::WriteOptions options)
-      Y_ABSL_LOCKS_EXCLUDED(start_mu_) override {
-    if (options.is_last_message()) {
-      options.set_buffer_hint();
-      write_ops_.ClientSendClose();
-    }
-    // TODO(vjpai): don't assert
-    GPR_CODEGEN_ASSERT(write_ops_.SendMessagePtr(msg, options).ok());
-    callbacks_outstanding_.fetch_add(1, std::memory_order_relaxed);
-    if (GPR_UNLIKELY(corked_write_needed_)) {
-      write_ops_.SendInitialMetadata(&context_->send_initial_metadata_,
-                                     context_->initial_metadata_flags());
-      corked_write_needed_ = false;
-    }
-
-    if (GPR_UNLIKELY(!started_.load(std::memory_order_acquire))) {
-      grpc::internal::MutexLock lock(&start_mu_);
-      if (GPR_LIKELY(!started_.load(std::memory_order_relaxed))) {
-        backlog_.write_ops = true;
-        return;
-      }
-    }
-    call_.PerformOps(&write_ops_);
-  }
-  void WritesDone() Y_ABSL_LOCKS_EXCLUDED(start_mu_) override {
-    writes_done_ops_.ClientSendClose();
-    writes_done_tag_.Set(
-        call_.call(),
-        [this](bool ok) {
-          reactor_->OnWritesDoneDone(ok);
-          MaybeFinish(/*from_reaction=*/true);
-        },
-        &writes_done_ops_, /*can_inline=*/false);
-    writes_done_ops_.set_core_cq_tag(&writes_done_tag_);
-    callbacks_outstanding_.fetch_add(1, std::memory_order_relaxed);
-    if (GPR_UNLIKELY(corked_write_needed_)) {
-      writes_done_ops_.SendInitialMetadata(&context_->send_initial_metadata_,
-                                           context_->initial_metadata_flags());
-      corked_write_needed_ = false;
-    }
-    if (GPR_UNLIKELY(!started_.load(std::memory_order_acquire))) {
-      grpc::internal::MutexLock lock(&start_mu_);
-      if (GPR_LIKELY(!started_.load(std::memory_order_relaxed))) {
-        backlog_.writes_done_ops = true;
-        return;
-      }
-    }
-    call_.PerformOps(&writes_done_ops_);
-  }
-
-  void AddHold(int holds) override {
-    callbacks_outstanding_.fetch_add(holds, std::memory_order_relaxed);
-  }
-  void RemoveHold() override { MaybeFinish(/*from_reaction=*/false); }
-
- private:
-  friend class ClientCallbackReaderWriterFactory<Request, Response>;
-
-  ClientCallbackReaderWriterImpl(grpc::internal::Call call,
-                                 grpc::ClientContext* context,
-                                 ClientBidiReactor<Request, Response>* reactor)
-      : context_(context),
-        call_(call),
-        reactor_(reactor),
-        start_corked_(context_->initial_metadata_corked_),
-        corked_write_needed_(start_corked_) {
-    this->BindReactor(reactor);
-
-    // Set up the unchanging parts of the start, read, and write tags and ops.
-    start_tag_.Set(
-        call_.call(),
-        [this](bool ok) {
-          reactor_->OnReadInitialMetadataDone(
-              ok && !reactor_->InternalTrailersOnly(call_.call()));
-          MaybeFinish(/*from_reaction=*/true);
-        },
-        &start_ops_, /*can_inline=*/false);
-    start_ops_.RecvInitialMetadata(context_);
-    start_ops_.set_core_cq_tag(&start_tag_);
-
-    write_tag_.Set(
-        call_.call(),
-        [this](bool ok) {
-          reactor_->OnWriteDone(ok);
-          MaybeFinish(/*from_reaction=*/true);
-        },
-        &write_ops_, /*can_inline=*/false);
-    write_ops_.set_core_cq_tag(&write_tag_);
-
-    read_tag_.Set(
-        call_.call(),
-        [this](bool ok) {
-          reactor_->OnReadDone(ok);
-          MaybeFinish(/*from_reaction=*/true);
-        },
-        &read_ops_, /*can_inline=*/false);
-    read_ops_.set_core_cq_tag(&read_tag_);
-
-    // Also set up the Finish tag and op set.
-    finish_tag_.Set(
-        call_.call(),
-        [this](bool /*ok*/) { MaybeFinish(/*from_reaction=*/true); },
-        &finish_ops_,
-        /*can_inline=*/false);
-    finish_ops_.ClientRecvStatus(context_, &finish_status_);
-    finish_ops_.set_core_cq_tag(&finish_tag_);
-  }
-
-  // MaybeFinish can be called from reactions or from user-initiated operations
-  // like StartCall or RemoveHold. If this is the last operation or hold on this
-  // object, it will invoke the OnDone reaction. If MaybeFinish was called from
-  // a reaction, it can call OnDone directly. If not, it would need to schedule
-  // OnDone onto an executor thread to avoid the possibility of deadlocking with
-  // any locks in the user code that invoked it.
-  void MaybeFinish(bool from_reaction) {
-    if (GPR_UNLIKELY(callbacks_outstanding_.fetch_sub(
-                         1, std::memory_order_acq_rel) == 1)) {
-      grpc::Status s = std::move(finish_status_);
-      auto* reactor = reactor_;
-      auto* call = call_.call();
-      this->~ClientCallbackReaderWriterImpl();
-      grpc::g_core_codegen_interface->grpc_call_unref(call);
-      if (GPR_LIKELY(from_reaction)) {
-        reactor->OnDone(s);
-      } else {
-        reactor->InternalScheduleOnDone(std::move(s));
-      }
-    }
-  }
-
-  grpc::ClientContext* const context_;
-  grpc::internal::Call call_;
-  ClientBidiReactor<Request, Response>* const reactor_;
-
-  grpc::internal::CallOpSet<grpc::internal::CallOpSendInitialMetadata,
-                            grpc::internal::CallOpRecvInitialMetadata>
-      start_ops_;
-  grpc::internal::CallbackWithSuccessTag start_tag_;
-  const bool start_corked_;
-  bool corked_write_needed_;  // no lock needed since only accessed in
-                              // Write/WritesDone which cannot be concurrent
-
-  grpc::internal::CallOpSet<grpc::internal::CallOpClientRecvStatus> finish_ops_;
-  grpc::internal::CallbackWithSuccessTag finish_tag_;
-  grpc::Status finish_status_;
-
-  grpc::internal::CallOpSet<grpc::internal::CallOpSendInitialMetadata,
-                            grpc::internal::CallOpSendMessage,
-                            grpc::internal::CallOpClientSendClose>
-      write_ops_;
-  grpc::internal::CallbackWithSuccessTag write_tag_;
-
-  grpc::internal::CallOpSet<grpc::internal::CallOpSendInitialMetadata,
-                            grpc::internal::CallOpClientSendClose>
-      writes_done_ops_;
-  grpc::internal::CallbackWithSuccessTag writes_done_tag_;
-
-  grpc::internal::CallOpSet<grpc::internal::CallOpRecvMessage<Response>>
-      read_ops_;
-  grpc::internal::CallbackWithSuccessTag read_tag_;
-
-  struct StartCallBacklog {
-    bool write_ops = false;
-    bool writes_done_ops = false;
-    bool read_ops = false;
-  };
-  StartCallBacklog backlog_ Y_ABSL_GUARDED_BY(start_mu_);
-
-  // Minimum of 3 callbacks to pre-register for start ops, StartCall, and finish
-  std::atomic<intptr_t> callbacks_outstanding_{3};
-  std::atomic_bool started_{false};
-  grpc::internal::Mutex start_mu_;
-};
-
-template <class Request, class Response>
-class ClientCallbackReaderWriterFactory {
- public:
-  static void Create(grpc::ChannelInterface* channel,
-                     const grpc::internal::RpcMethod& method,
-                     grpc::ClientContext* context,
-                     ClientBidiReactor<Request, Response>* reactor) {
-    grpc::internal::Call call =
-        channel->CreateCall(method, context, channel->CallbackCQ());
-
-    grpc::g_core_codegen_interface->grpc_call_ref(call.call());
-    new (grpc::g_core_codegen_interface->grpc_call_arena_alloc(
-        call.call(), sizeof(ClientCallbackReaderWriterImpl<Request, Response>)))
-        ClientCallbackReaderWriterImpl<Request, Response>(call, context,
-                                                          reactor);
-  }
-};
-
-template <class Response>
-class ClientCallbackReaderImpl : public ClientCallbackReader<Response> {
- public:
-  // always allocated against a call arena, no memory free required
-  static void operator delete(void* /*ptr*/, std::size_t size) {
-    GPR_CODEGEN_ASSERT(size == sizeof(ClientCallbackReaderImpl));
-  }
-
-  // This operator should never be called as the memory should be freed as part
-  // of the arena destruction. It only exists to provide a matching operator
-  // delete to the operator new so that some compilers will not complain (see
-  // https://github.com/grpc/grpc/issues/11301) Note at the time of adding this
-  // there are no tests catching the compiler warning.
-  static void operator delete(void*, void*) { GPR_CODEGEN_ASSERT(false); }
-
-  void StartCall() override {
-    // This call initiates two batches, plus any backlog, each with a callback
-    // 1. Send initial metadata (unless corked) + recv initial metadata
-    // 2. Any backlog
-    // 3. Recv trailing metadata
-
-    start_tag_.Set(
-        call_.call(),
-        [this](bool ok) {
-          reactor_->OnReadInitialMetadataDone(
-              ok && !reactor_->InternalTrailersOnly(call_.call()));
-          MaybeFinish(/*from_reaction=*/true);
-        },
-        &start_ops_, /*can_inline=*/false);
-    start_ops_.SendInitialMetadata(&context_->send_initial_metadata_,
-                                   context_->initial_metadata_flags());
-    start_ops_.RecvInitialMetadata(context_);
-    start_ops_.set_core_cq_tag(&start_tag_);
-    call_.PerformOps(&start_ops_);
-
-    // Also set up the read tag so it doesn't have to be set up each time
-    read_tag_.Set(
-        call_.call(),
-        [this](bool ok) {
-          reactor_->OnReadDone(ok);
-          MaybeFinish(/*from_reaction=*/true);
-        },
-        &read_ops_, /*can_inline=*/false);
-    read_ops_.set_core_cq_tag(&read_tag_);
-
-    {
-      grpc::internal::MutexLock lock(&start_mu_);
-      if (backlog_.read_ops) {
-        call_.PerformOps(&read_ops_);
-      }
-      started_.store(true, std::memory_order_release);
-    }
-
-    finish_tag_.Set(
-        call_.call(),
-        [this](bool /*ok*/) { MaybeFinish(/*from_reaction=*/true); },
-        &finish_ops_, /*can_inline=*/false);
-    finish_ops_.ClientRecvStatus(context_, &finish_status_);
-    finish_ops_.set_core_cq_tag(&finish_tag_);
-    call_.PerformOps(&finish_ops_);
-  }
-
-  void Read(Response* msg) override {
-    read_ops_.RecvMessage(msg);
-    callbacks_outstanding_.fetch_add(1, std::memory_order_relaxed);
-    if (GPR_UNLIKELY(!started_.load(std::memory_order_acquire))) {
-      grpc::internal::MutexLock lock(&start_mu_);
-      if (GPR_LIKELY(!started_.load(std::memory_order_relaxed))) {
-        backlog_.read_ops = true;
-        return;
-      }
-    }
-    call_.PerformOps(&read_ops_);
-  }
-
-  void AddHold(int holds) override {
-    callbacks_outstanding_.fetch_add(holds, std::memory_order_relaxed);
-  }
-  void RemoveHold() override { MaybeFinish(/*from_reaction=*/false); }
-
- private:
-  friend class ClientCallbackReaderFactory<Response>;
-
-  template <class Request>
-  ClientCallbackReaderImpl(grpc::internal::Call call,
-                           grpc::ClientContext* context, Request* request,
-                           ClientReadReactor<Response>* reactor)
-      : context_(context), call_(call), reactor_(reactor) {
-    this->BindReactor(reactor);
-    // TODO(vjpai): don't assert
-    GPR_CODEGEN_ASSERT(start_ops_.SendMessagePtr(request).ok());
-    start_ops_.ClientSendClose();
-  }
-
-  // MaybeFinish behaves as in ClientCallbackReaderWriterImpl.
-  void MaybeFinish(bool from_reaction) {
-    if (GPR_UNLIKELY(callbacks_outstanding_.fetch_sub(
-                         1, std::memory_order_acq_rel) == 1)) {
-      grpc::Status s = std::move(finish_status_);
-      auto* reactor = reactor_;
-      auto* call = call_.call();
-      this->~ClientCallbackReaderImpl();
-      grpc::g_core_codegen_interface->grpc_call_unref(call);
-      if (GPR_LIKELY(from_reaction)) {
-        reactor->OnDone(s);
-      } else {
-        reactor->InternalScheduleOnDone(std::move(s));
-      }
-    }
-  }
-
-  grpc::ClientContext* const context_;
-  grpc::internal::Call call_;
-  ClientReadReactor<Response>* const reactor_;
-
-  grpc::internal::CallOpSet<grpc::internal::CallOpSendInitialMetadata,
-                            grpc::internal::CallOpSendMessage,
-                            grpc::internal::CallOpClientSendClose,
-                            grpc::internal::CallOpRecvInitialMetadata>
-      start_ops_;
-  grpc::internal::CallbackWithSuccessTag start_tag_;
-
-  grpc::internal::CallOpSet<grpc::internal::CallOpClientRecvStatus> finish_ops_;
-  grpc::internal::CallbackWithSuccessTag finish_tag_;
-  grpc::Status finish_status_;
-
-  grpc::internal::CallOpSet<grpc::internal::CallOpRecvMessage<Response>>
-      read_ops_;
-  grpc::internal::CallbackWithSuccessTag read_tag_;
-
-  struct StartCallBacklog {
-    bool read_ops = false;
-  };
-  StartCallBacklog backlog_ Y_ABSL_GUARDED_BY(start_mu_);
-
-  // Minimum of 2 callbacks to pre-register for start and finish
-  std::atomic<intptr_t> callbacks_outstanding_{2};
-  std::atomic_bool started_{false};
-  grpc::internal::Mutex start_mu_;
-};
-
-template <class Response>
-class ClientCallbackReaderFactory {
- public:
-  template <class Request>
-  static void Create(grpc::ChannelInterface* channel,
-                     const grpc::internal::RpcMethod& method,
-                     grpc::ClientContext* context, const Request* request,
-                     ClientReadReactor<Response>* reactor) {
-    grpc::internal::Call call =
-        channel->CreateCall(method, context, channel->CallbackCQ());
-
-    grpc::g_core_codegen_interface->grpc_call_ref(call.call());
-    new (grpc::g_core_codegen_interface->grpc_call_arena_alloc(
-        call.call(), sizeof(ClientCallbackReaderImpl<Response>)))
-        ClientCallbackReaderImpl<Response>(call, context, request, reactor);
-  }
-};
-
-template <class Request>
-class ClientCallbackWriterImpl : public ClientCallbackWriter<Request> {
- public:
-  // always allocated against a call arena, no memory free required
-  static void operator delete(void* /*ptr*/, std::size_t size) {
-    GPR_CODEGEN_ASSERT(size == sizeof(ClientCallbackWriterImpl));
-  }
-
-  // This operator should never be called as the memory should be freed as part
-  // of the arena destruction. It only exists to provide a matching operator
-  // delete to the operator new so that some compilers will not complain (see
-  // https://github.com/grpc/grpc/issues/11301) Note at the time of adding this
-  // there are no tests catching the compiler warning.
-  static void operator delete(void*, void*) { GPR_CODEGEN_ASSERT(false); }
-
-  void StartCall() Y_ABSL_LOCKS_EXCLUDED(start_mu_) override {
-    // This call initiates two batches, plus any backlog, each with a callback
-    // 1. Send initial metadata (unless corked) + recv initial metadata
-    // 2. Any backlog
-    // 3. Recv trailing metadata
-
-    if (!start_corked_) {
-      start_ops_.SendInitialMetadata(&context_->send_initial_metadata_,
-                                     context_->initial_metadata_flags());
-    }
-    call_.PerformOps(&start_ops_);
-
-    {
-      grpc::internal::MutexLock lock(&start_mu_);
-
-      if (backlog_.write_ops) {
-        call_.PerformOps(&write_ops_);
-      }
-      if (backlog_.writes_done_ops) {
-        call_.PerformOps(&writes_done_ops_);
-      }
-      call_.PerformOps(&finish_ops_);
-      // The last thing in this critical section is to set started_ so that it
-      // can be used lock-free as well.
-      started_.store(true, std::memory_order_release);
-    }
-    // MaybeFinish outside the lock to make sure that destruction of this object
-    // doesn't take place while holding the lock (which would cause the lock to
-    // be released after destruction)
-    this->MaybeFinish(/*from_reaction=*/false);
-  }
-
-  void Write(const Request* msg, grpc::WriteOptions options)
-      Y_ABSL_LOCKS_EXCLUDED(start_mu_) override {
-    if (GPR_UNLIKELY(options.is_last_message())) {
-      options.set_buffer_hint();
-      write_ops_.ClientSendClose();
-    }
-    // TODO(vjpai): don't assert
-    GPR_CODEGEN_ASSERT(write_ops_.SendMessagePtr(msg, options).ok());
-    callbacks_outstanding_.fetch_add(1, std::memory_order_relaxed);
-
-    if (GPR_UNLIKELY(corked_write_needed_)) {
-      write_ops_.SendInitialMetadata(&context_->send_initial_metadata_,
-                                     context_->initial_metadata_flags());
-      corked_write_needed_ = false;
-    }
-
-    if (GPR_UNLIKELY(!started_.load(std::memory_order_acquire))) {
-      grpc::internal::MutexLock lock(&start_mu_);
-      if (GPR_LIKELY(!started_.load(std::memory_order_relaxed))) {
-        backlog_.write_ops = true;
-        return;
-      }
-    }
-    call_.PerformOps(&write_ops_);
-  }
-
-  void WritesDone() Y_ABSL_LOCKS_EXCLUDED(start_mu_) override {
-    writes_done_ops_.ClientSendClose();
-    writes_done_tag_.Set(
-        call_.call(),
-        [this](bool ok) {
-          reactor_->OnWritesDoneDone(ok);
-          MaybeFinish(/*from_reaction=*/true);
-        },
-        &writes_done_ops_, /*can_inline=*/false);
-    writes_done_ops_.set_core_cq_tag(&writes_done_tag_);
-    callbacks_outstanding_.fetch_add(1, std::memory_order_relaxed);
-
-    if (GPR_UNLIKELY(corked_write_needed_)) {
-      writes_done_ops_.SendInitialMetadata(&context_->send_initial_metadata_,
-                                           context_->initial_metadata_flags());
-      corked_write_needed_ = false;
-    }
-
-    if (GPR_UNLIKELY(!started_.load(std::memory_order_acquire))) {
-      grpc::internal::MutexLock lock(&start_mu_);
-      if (GPR_LIKELY(!started_.load(std::memory_order_relaxed))) {
-        backlog_.writes_done_ops = true;
-        return;
-      }
-    }
-    call_.PerformOps(&writes_done_ops_);
-  }
-
-  void AddHold(int holds) override {
-    callbacks_outstanding_.fetch_add(holds, std::memory_order_relaxed);
-  }
-  void RemoveHold() override { MaybeFinish(/*from_reaction=*/false); }
-
- private:
-  friend class ClientCallbackWriterFactory<Request>;
-
-  template <class Response>
-  ClientCallbackWriterImpl(grpc::internal::Call call,
-                           grpc::ClientContext* context, Response* response,
-                           ClientWriteReactor<Request>* reactor)
-      : context_(context),
-        call_(call),
-        reactor_(reactor),
-        start_corked_(context_->initial_metadata_corked_),
-        corked_write_needed_(start_corked_) {
-    this->BindReactor(reactor);
-
-    // Set up the unchanging parts of the start and write tags and ops.
-    start_tag_.Set(
-        call_.call(),
-        [this](bool ok) {
-          reactor_->OnReadInitialMetadataDone(
-              ok && !reactor_->InternalTrailersOnly(call_.call()));
-          MaybeFinish(/*from_reaction=*/true);
-        },
-        &start_ops_, /*can_inline=*/false);
-    start_ops_.RecvInitialMetadata(context_);
-    start_ops_.set_core_cq_tag(&start_tag_);
-
-    write_tag_.Set(
-        call_.call(),
-        [this](bool ok) {
-          reactor_->OnWriteDone(ok);
-          MaybeFinish(/*from_reaction=*/true);
-        },
-        &write_ops_, /*can_inline=*/false);
-    write_ops_.set_core_cq_tag(&write_tag_);
-
-    // Also set up the Finish tag and op set.
-    finish_ops_.RecvMessage(response);
-    finish_ops_.AllowNoMessage();
-    finish_tag_.Set(
-        call_.call(),
-        [this](bool /*ok*/) { MaybeFinish(/*from_reaction=*/true); },
-        &finish_ops_,
-        /*can_inline=*/false);
-    finish_ops_.ClientRecvStatus(context_, &finish_status_);
-    finish_ops_.set_core_cq_tag(&finish_tag_);
-  }
-
-  // MaybeFinish behaves as in ClientCallbackReaderWriterImpl.
-  void MaybeFinish(bool from_reaction) {
-    if (GPR_UNLIKELY(callbacks_outstanding_.fetch_sub(
-                         1, std::memory_order_acq_rel) == 1)) {
-      grpc::Status s = std::move(finish_status_);
-      auto* reactor = reactor_;
-      auto* call = call_.call();
-      this->~ClientCallbackWriterImpl();
-      grpc::g_core_codegen_interface->grpc_call_unref(call);
-      if (GPR_LIKELY(from_reaction)) {
-        reactor->OnDone(s);
-      } else {
-        reactor->InternalScheduleOnDone(std::move(s));
-      }
-    }
-  }
-
-  grpc::ClientContext* const context_;
-  grpc::internal::Call call_;
-  ClientWriteReactor<Request>* const reactor_;
-
-  grpc::internal::CallOpSet<grpc::internal::CallOpSendInitialMetadata,
-                            grpc::internal::CallOpRecvInitialMetadata>
-      start_ops_;
-  grpc::internal::CallbackWithSuccessTag start_tag_;
-  const bool start_corked_;
-  bool corked_write_needed_;  // no lock needed since only accessed in
-                              // Write/WritesDone which cannot be concurrent
-
-  grpc::internal::CallOpSet<grpc::internal::CallOpGenericRecvMessage,
-                            grpc::internal::CallOpClientRecvStatus>
-      finish_ops_;
-  grpc::internal::CallbackWithSuccessTag finish_tag_;
-  grpc::Status finish_status_;
-
-  grpc::internal::CallOpSet<grpc::internal::CallOpSendInitialMetadata,
-                            grpc::internal::CallOpSendMessage,
-                            grpc::internal::CallOpClientSendClose>
-      write_ops_;
-  grpc::internal::CallbackWithSuccessTag write_tag_;
-
-  grpc::internal::CallOpSet<grpc::internal::CallOpSendInitialMetadata,
-                            grpc::internal::CallOpClientSendClose>
-      writes_done_ops_;
-  grpc::internal::CallbackWithSuccessTag writes_done_tag_;
-
-  struct StartCallBacklog {
-    bool write_ops = false;
-    bool writes_done_ops = false;
-  };
-  StartCallBacklog backlog_ Y_ABSL_GUARDED_BY(start_mu_);
-
-  // Minimum of 3 callbacks to pre-register for start ops, StartCall, and finish
-  std::atomic<intptr_t> callbacks_outstanding_{3};
-  std::atomic_bool started_{false};
-  grpc::internal::Mutex start_mu_;
-};
-
-template <class Request>
-class ClientCallbackWriterFactory {
- public:
-  template <class Response>
-  static void Create(grpc::ChannelInterface* channel,
-                     const grpc::internal::RpcMethod& method,
-                     grpc::ClientContext* context, Response* response,
-                     ClientWriteReactor<Request>* reactor) {
-    grpc::internal::Call call =
-        channel->CreateCall(method, context, channel->CallbackCQ());
-
-    grpc::g_core_codegen_interface->grpc_call_ref(call.call());
-    new (grpc::g_core_codegen_interface->grpc_call_arena_alloc(
-        call.call(), sizeof(ClientCallbackWriterImpl<Request>)))
-        ClientCallbackWriterImpl<Request>(call, context, response, reactor);
-  }
-};
-
-class ClientCallbackUnaryImpl final : public ClientCallbackUnary {
- public:
-  // always allocated against a call arena, no memory free required
-  static void operator delete(void* /*ptr*/, std::size_t size) {
-    GPR_CODEGEN_ASSERT(size == sizeof(ClientCallbackUnaryImpl));
-  }
-
-  // This operator should never be called as the memory should be freed as part
-  // of the arena destruction. It only exists to provide a matching operator
-  // delete to the operator new so that some compilers will not complain (see
-  // https://github.com/grpc/grpc/issues/11301) Note at the time of adding this
-  // there are no tests catching the compiler warning.
-  static void operator delete(void*, void*) { GPR_CODEGEN_ASSERT(false); }
-
-  void StartCall() override {
-    // This call initiates two batches, each with a callback
-    // 1. Send initial metadata + write + writes done + recv initial metadata
-    // 2. Read message, recv trailing metadata
-
-    start_tag_.Set(
-        call_.call(),
-        [this](bool ok) {
-          reactor_->OnReadInitialMetadataDone(
-              ok && !reactor_->InternalTrailersOnly(call_.call()));
-          MaybeFinish();
-        },
-        &start_ops_, /*can_inline=*/false);
-    start_ops_.SendInitialMetadata(&context_->send_initial_metadata_,
-                                   context_->initial_metadata_flags());
-    start_ops_.RecvInitialMetadata(context_);
-    start_ops_.set_core_cq_tag(&start_tag_);
-    call_.PerformOps(&start_ops_);
-
-    finish_tag_.Set(
-        call_.call(), [this](bool /*ok*/) { MaybeFinish(); }, &finish_ops_,
-        /*can_inline=*/false);
-    finish_ops_.ClientRecvStatus(context_, &finish_status_);
-    finish_ops_.set_core_cq_tag(&finish_tag_);
-    call_.PerformOps(&finish_ops_);
-  }
-
- private:
-  friend class ClientCallbackUnaryFactory;
-
-  template <class Request, class Response>
-  ClientCallbackUnaryImpl(grpc::internal::Call call,
-                          grpc::ClientContext* context, Request* request,
-                          Response* response, ClientUnaryReactor* reactor)
-      : context_(context), call_(call), reactor_(reactor) {
-    this->BindReactor(reactor);
-    // TODO(vjpai): don't assert
-    GPR_CODEGEN_ASSERT(start_ops_.SendMessagePtr(request).ok());
-    start_ops_.ClientSendClose();
-    finish_ops_.RecvMessage(response);
-    finish_ops_.AllowNoMessage();
-  }
-
-  // In the unary case, MaybeFinish is only ever invoked from a
-  // library-initiated reaction, so it will just directly call OnDone if this is
-  // the last reaction for this RPC.
-  void MaybeFinish() {
-    if (GPR_UNLIKELY(callbacks_outstanding_.fetch_sub(
-                         1, std::memory_order_acq_rel) == 1)) {
-      grpc::Status s = std::move(finish_status_);
-      auto* reactor = reactor_;
-      auto* call = call_.call();
-      this->~ClientCallbackUnaryImpl();
-      grpc::g_core_codegen_interface->grpc_call_unref(call);
-      reactor->OnDone(s);
-    }
-  }
-
-  grpc::ClientContext* const context_;
-  grpc::internal::Call call_;
-  ClientUnaryReactor* const reactor_;
-
-  grpc::internal::CallOpSet<grpc::internal::CallOpSendInitialMetadata,
-                            grpc::internal::CallOpSendMessage,
-                            grpc::internal::CallOpClientSendClose,
-                            grpc::internal::CallOpRecvInitialMetadata>
-      start_ops_;
-  grpc::internal::CallbackWithSuccessTag start_tag_;
-
-  grpc::internal::CallOpSet<grpc::internal::CallOpGenericRecvMessage,
-                            grpc::internal::CallOpClientRecvStatus>
-      finish_ops_;
-  grpc::internal::CallbackWithSuccessTag finish_tag_;
-  grpc::Status finish_status_;
-
-  // This call will have 2 callbacks: start and finish
-  std::atomic<intptr_t> callbacks_outstanding_{2};
-};
-
-class ClientCallbackUnaryFactory {
- public:
-  template <class Request, class Response, class BaseRequest = Request,
-            class BaseResponse = Response>
-  static void Create(grpc::ChannelInterface* channel,
-                     const grpc::internal::RpcMethod& method,
-                     grpc::ClientContext* context, const Request* request,
-                     Response* response, ClientUnaryReactor* reactor) {
-    grpc::internal::Call call =
-        channel->CreateCall(method, context, channel->CallbackCQ());
-
-    grpc::g_core_codegen_interface->grpc_call_ref(call.call());
-
-    new (grpc::g_core_codegen_interface->grpc_call_arena_alloc(
-        call.call(), sizeof(ClientCallbackUnaryImpl)))
-        ClientCallbackUnaryImpl(call, context,
-                                static_cast<const BaseRequest*>(request),
-                                static_cast<BaseResponse*>(response), reactor);
-  }
-};
-
-}  // namespace internal
-}  // namespace grpc
-#endif  // GRPCPP_IMPL_CODEGEN_CLIENT_CALLBACK_H
diff --git a/contrib/libs/grpc/include/grpcpp/impl/codegen/client_context.h b/contrib/libs/grpc/include/grpcpp/impl/codegen/client_context.h
deleted file mode 100644
index d24dd38b3c..0000000000
--- a/contrib/libs/grpc/include/grpcpp/impl/codegen/client_context.h
+++ /dev/null
@@ -1,519 +0,0 @@
-/*
- *
- * Copyright 2015 gRPC authors.
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
- */
-
-/// A ClientContext allows the person implementing a service client to:
-///
-/// - Add custom metadata key-value pairs that will propagated to the server
-/// side.
-/// - Control call settings such as compression and authentication.
-/// - Initial and trailing metadata coming from the server.
-/// - Get performance metrics (ie, census).
-///
-/// Context settings are only relevant to the call they are invoked with, that
-/// is to say, they aren't sticky. Some of these settings, such as the
-/// compression options, can be made persistent at channel construction time
-/// (see \a grpc::CreateCustomChannel).
-///
-/// \warning ClientContext instances should \em not be reused across rpcs.
-
-#ifndef GRPCPP_IMPL_CODEGEN_CLIENT_CONTEXT_H
-#define GRPCPP_IMPL_CODEGEN_CLIENT_CONTEXT_H
-
-// IWYU pragma: private, include <grpcpp/client_context.h>
-
-#include <map>
-#include <memory>
-#include <util/generic/string.h>
-#include <util/string/cast.h>
-
-#include <grpc/impl/codegen/compression_types.h>
-#include <grpc/impl/codegen/propagation_bits.h>
-#include <grpcpp/impl/codegen/client_interceptor.h>
-#include <grpcpp/impl/codegen/config.h>
-#include <grpcpp/impl/codegen/core_codegen_interface.h>
-#include <grpcpp/impl/codegen/create_auth_context.h>
-#include <grpcpp/impl/codegen/metadata_map.h>
-#include <grpcpp/impl/codegen/rpc_method.h>
-#include <grpcpp/impl/codegen/security/auth_context.h>
-#include <grpcpp/impl/codegen/slice.h>
-#include <grpcpp/impl/codegen/status.h>
-#include <grpcpp/impl/codegen/string_ref.h>
-#include <grpcpp/impl/codegen/sync.h>
-#include <grpcpp/impl/codegen/time.h>
-
-struct census_context;
-struct grpc_call;
-
-namespace grpc {
-class ServerContext;
-class ServerContextBase;
-class CallbackServerContext;
-
-namespace internal {
-template <class InputMessage, class OutputMessage>
-class CallbackUnaryCallImpl;
-template <class Request, class Response>
-class ClientCallbackReaderWriterImpl;
-template <class Response>
-class ClientCallbackReaderImpl;
-template <class Request>
-class ClientCallbackWriterImpl;
-class ClientCallbackUnaryImpl;
-class ClientContextAccessor;
-class ClientAsyncResponseReaderHelper;
-}  // namespace internal
-
-template <class R>
-class ClientReader;
-template <class W>
-class ClientWriter;
-template <class W, class R>
-class ClientReaderWriter;
-template <class R>
-class ClientAsyncReader;
-template <class W>
-class ClientAsyncWriter;
-template <class W, class R>
-class ClientAsyncReaderWriter;
-template <class R>
-class ClientAsyncResponseReader;
-
-namespace testing {
-class InteropClientContextInspector;
-class ClientContextTestPeer;
-}  // namespace testing
-
-namespace internal {
-class RpcMethod;
-template <class InputMessage, class OutputMessage>
-class BlockingUnaryCallImpl;
-class CallOpClientRecvStatus;
-class CallOpRecvInitialMetadata;
-class ServerContextImpl;
-template <class InputMessage, class OutputMessage>
-class CallbackUnaryCallImpl;
-template <class Request, class Response>
-class ClientCallbackReaderWriterImpl;
-template <class Response>
-class ClientCallbackReaderImpl;
-template <class Request>
-class ClientCallbackWriterImpl;
-class ClientCallbackUnaryImpl;
-class ClientContextAccessor;
-}  // namespace internal
-
-class CallCredentials;
-class Channel;
-class ChannelInterface;
-class CompletionQueue;
-
-/// Options for \a ClientContext::FromServerContext specifying which traits from
-/// the \a ServerContext to propagate (copy) from it into a new \a
-/// ClientContext.
-///
-/// \see ClientContext::FromServerContext
-class PropagationOptions {
- public:
-  PropagationOptions() : propagate_(GRPC_PROPAGATE_DEFAULTS) {}
-
-  PropagationOptions& enable_deadline_propagation() {
-    propagate_ |= GRPC_PROPAGATE_DEADLINE;
-    return *this;
-  }
-
-  PropagationOptions& disable_deadline_propagation() {
-    propagate_ &= ~GRPC_PROPAGATE_DEADLINE;
-    return *this;
-  }
-
-  PropagationOptions& enable_census_stats_propagation() {
-    propagate_ |= GRPC_PROPAGATE_CENSUS_STATS_CONTEXT;
-    return *this;
-  }
-
-  PropagationOptions& disable_census_stats_propagation() {
-    propagate_ &= ~GRPC_PROPAGATE_CENSUS_STATS_CONTEXT;
-    return *this;
-  }
-
-  PropagationOptions& enable_census_tracing_propagation() {
-    propagate_ |= GRPC_PROPAGATE_CENSUS_TRACING_CONTEXT;
-    return *this;
-  }
-
-  PropagationOptions& disable_census_tracing_propagation() {
-    propagate_ &= ~GRPC_PROPAGATE_CENSUS_TRACING_CONTEXT;
-    return *this;
-  }
-
-  PropagationOptions& enable_cancellation_propagation() {
-    propagate_ |= GRPC_PROPAGATE_CANCELLATION;
-    return *this;
-  }
-
-  PropagationOptions& disable_cancellation_propagation() {
-    propagate_ &= ~GRPC_PROPAGATE_CANCELLATION;
-    return *this;
-  }
-
-  uint32_t c_bitmask() const { return propagate_; }
-
- private:
-  uint32_t propagate_;
-};
-
-/// A ClientContext allows the person implementing a service client to:
-///
-/// - Add custom metadata key-value pairs that will propagated to the server
-///   side.
-/// - Control call settings such as compression and authentication.
-/// - Initial and trailing metadata coming from the server.
-/// - Get performance metrics (ie, census).
-///
-/// Context settings are only relevant to the call they are invoked with, that
-/// is to say, they aren't sticky. Some of these settings, such as the
-/// compression options, can be made persistent at channel construction time
-/// (see \a grpc::CreateCustomChannel).
-///
-/// \warning ClientContext instances should \em not be reused across rpcs.
-/// \warning The ClientContext instance used for creating an rpc must remain
-///          alive and valid for the lifetime of the rpc.
-class ClientContext {
- public:
-  ClientContext();
-  ~ClientContext();
-
-  /// Create a new \a ClientContext as a child of an incoming server call,
-  /// according to \a options (\see PropagationOptions).
-  ///
-  /// \param server_context The source server context to use as the basis for
-  /// constructing the client context.
-  /// \param options The options controlling what to copy from the \a
-  /// server_context.
-  ///
-  /// \return A newly constructed \a ClientContext instance based on \a
-  /// server_context, with traits propagated (copied) according to \a options.
-  static std::unique_ptr<ClientContext> FromServerContext(
-      const grpc::ServerContextBase& server_context,
-      PropagationOptions options = PropagationOptions());
-  static std::unique_ptr<ClientContext> FromCallbackServerContext(
-      const grpc::CallbackServerContext& server_context,
-      PropagationOptions options = PropagationOptions());
-
-  /// Add the (\a meta_key, \a meta_value) pair to the metadata associated with
-  /// a client call. These are made available at the server side by the \a
-  /// grpc::ServerContext::client_metadata() method.
-  ///
-  /// \warning This method should only be called before invoking the rpc.
-  ///
-  /// \param meta_key The metadata key. If \a meta_value is binary data, it must
-  /// end in "-bin".
-  /// \param meta_value The metadata value. If its value is binary, the key name
-  /// must end in "-bin".
-  ///
-  /// Metadata must conform to the following format:
-  /**
-  \verbatim
-  Custom-Metadata -> Binary-Header / ASCII-Header
-  Binary-Header -> {Header-Name "-bin" } {binary value}
-  ASCII-Header -> Header-Name ASCII-Value
-  Header-Name -> 1*( %x30-39 / %x61-7A / "_" / "-" / ".") ; 0-9 a-z _ - .
-  ASCII-Value -> 1*( %x20-%x7E ) ; space and printable ASCII
-  Custom-Metadata -> Binary-Header / ASCII-Header
-  \endverbatim
-  **/
-  void AddMetadata(const TString& meta_key, const TString& meta_value);
-
-  /// Return a collection of initial metadata key-value pairs. Note that keys
-  /// may happen more than once (ie, a \a std::multimap is returned).
-  ///
-  /// \warning This method should only be called after initial metadata has been
-  /// received. For streaming calls, see \a
-  /// ClientReaderInterface::WaitForInitialMetadata().
-  ///
-  /// \return A multimap of initial metadata key-value pairs from the server.
-  const std::multimap<grpc::string_ref, grpc::string_ref>&
-  GetServerInitialMetadata() const {
-    GPR_CODEGEN_ASSERT(initial_metadata_received_);
-    return *recv_initial_metadata_.map();
-  }
-
-  /// Return a collection of trailing metadata key-value pairs. Note that keys
-  /// may happen more than once (ie, a \a std::multimap is returned).
-  ///
-  /// \warning This method is only callable once the stream has finished.
-  ///
-  /// \return A multimap of metadata trailing key-value pairs from the server.
-  const std::multimap<grpc::string_ref, grpc::string_ref>&
-  GetServerTrailingMetadata() const {
-    // TODO(yangg) check finished
-    return *trailing_metadata_.map();
-  }
-
-  /// Set the deadline for the client call.
-  ///
-  /// \warning This method should only be called before invoking the rpc.
-  ///
-  /// \param deadline the deadline for the client call. Units are determined by
-  /// the type used. The deadline is an absolute (not relative) time.
-  template <typename T>
-  void set_deadline(const T& deadline) {
-    grpc::TimePoint<T> deadline_tp(deadline);
-    deadline_ = deadline_tp.raw_time();
-  }
-
-  /// Trigger wait-for-ready or not on this request.
-  /// See https://github.com/grpc/grpc/blob/master/doc/wait-for-ready.md.
-  /// If set, if an RPC is made when a channel's connectivity state is
-  /// TRANSIENT_FAILURE or CONNECTING, the call will not "fail fast",
-  /// and the channel will wait until the channel is READY before making the
-  /// call.
-  void set_wait_for_ready(bool wait_for_ready) {
-    wait_for_ready_ = wait_for_ready;
-    wait_for_ready_explicitly_set_ = true;
-  }
-
-  /// DEPRECATED: Use set_wait_for_ready() instead.
-  void set_fail_fast(bool fail_fast) { set_wait_for_ready(!fail_fast); }
-
-  /// Return the deadline for the client call.
-  std::chrono::system_clock::time_point deadline() const {
-    return grpc::Timespec2Timepoint(deadline_);
-  }
-
-  /// Return a \a gpr_timespec representation of the client call's deadline.
-  gpr_timespec raw_deadline() const { return deadline_; }
-
-  /// Set the per call authority header (see
-  /// https://tools.ietf.org/html/rfc7540#section-8.1.2.3).
-  void set_authority(const TString& authority) { authority_ = authority; }
-
-  /// Return the authentication context for the associated client call.
-  /// It is only valid to call this during the lifetime of the client call.
-  ///
-  /// \see grpc::AuthContext.
-  std::shared_ptr<const grpc::AuthContext> auth_context() const {
-    if (auth_context_ == nullptr) {
-      auth_context_ = grpc::CreateAuthContext(call_);
-    }
-    return auth_context_;
-  }
-
-  /// Set credentials for the client call.
-  ///
-  /// A credentials object encapsulates all the state needed by a client to
-  /// authenticate with a server and make various assertions, e.g., about the
-  /// client’s identity, role, or whether it is authorized to make a particular
-  /// call.
-  ///
-  /// It is legal to call this only before initial metadata is sent.
-  ///
-  /// \see  https://grpc.io/docs/guides/auth.html
-  void set_credentials(const std::shared_ptr<grpc::CallCredentials>& creds);
-
-  /// EXPERIMENTAL debugging API
-  ///
-  /// Returns the credentials for the client call. This should be used only in
-  /// tests and for diagnostic purposes, and should not be used by application
-  /// logic.
-  std::shared_ptr<grpc::CallCredentials> credentials() { return creds_; }
-
-  /// Return the compression algorithm the client call will request be used.
-  /// Note that the gRPC runtime may decide to ignore this request, for example,
-  /// due to resource constraints.
-  grpc_compression_algorithm compression_algorithm() const {
-    return compression_algorithm_;
-  }
-
-  /// Set \a algorithm to be the compression algorithm used for the client call.
-  ///
-  /// \param algorithm The compression algorithm used for the client call.
-  void set_compression_algorithm(grpc_compression_algorithm algorithm);
-
-  /// Flag whether the initial metadata should be \a corked
-  ///
-  /// If \a corked is true, then the initial metadata will be coalesced with the
-  /// write of first message in the stream. As a result, any tag set for the
-  /// initial metadata operation (starting a client-streaming or bidi-streaming
-  /// RPC) will not actually be sent to the completion queue or delivered
-  /// via Next.
-  ///
-  /// \param corked The flag indicating whether the initial metadata is to be
-  /// corked or not.
-  void set_initial_metadata_corked(bool corked) {
-    initial_metadata_corked_ = corked;
-  }
-
-  /// Return the peer uri in a string.
-  /// It is only valid to call this during the lifetime of the client call.
-  ///
-  /// \warning This value is never authenticated or subject to any security
-  /// related code. It must not be used for any authentication related
-  /// functionality. Instead, use auth_context.
-  ///
-  /// \return The call's peer URI.
-  TString peer() const;
-
-  /// Sets the census context.
-  /// It is only valid to call this before the client call is created. A common
-  /// place of setting census context is from within the DefaultConstructor
-  /// method of GlobalCallbacks.
-  void set_census_context(struct census_context* ccp) { census_context_ = ccp; }
-
-  /// Returns the census context that has been set, or nullptr if not set.
-  struct census_context* census_context() const {
-    return census_context_;
-  }
-
-  /// Send a best-effort out-of-band cancel on the call associated with
-  /// this client context.  The call could be in any stage; e.g., if it is
-  /// already finished, it may still return success.
-  ///
-  /// There is no guarantee the call will be cancelled.
-  ///
-  /// Note that TryCancel() does not change any of the tags that are pending
-  /// on the completion queue. All pending tags will still be delivered
-  /// (though their ok result may reflect the effect of cancellation).
-  void TryCancel();
-
-  /// Global Callbacks
-  ///
-  /// Can be set exactly once per application to install hooks whenever
-  /// a client context is constructed and destructed.
-  class GlobalCallbacks {
-   public:
-    virtual ~GlobalCallbacks() {}
-    virtual void DefaultConstructor(ClientContext* context) = 0;
-    virtual void Destructor(ClientContext* context) = 0;
-  };
-  static void SetGlobalCallbacks(GlobalCallbacks* callbacks);
-
-  /// Should be used for framework-level extensions only.
-  /// Applications never need to call this method.
-  grpc_call* c_call() { return call_; }
-
-  /// EXPERIMENTAL debugging API
-  ///
-  /// if status is not ok() for an RPC, this will return a detailed string
-  /// of the gRPC Core error that led to the failure. It should not be relied
-  /// upon for anything other than gaining more debug data in failure cases.
-  TString debug_error_string() const { return debug_error_string_; }
-
- private:
-  // Disallow copy and assign.
-  ClientContext(const ClientContext&);
-  ClientContext& operator=(const ClientContext&);
-
-  friend class grpc::testing::InteropClientContextInspector;
-  friend class grpc::testing::ClientContextTestPeer;
-  friend class grpc::internal::CallOpClientRecvStatus;
-  friend class grpc::internal::CallOpRecvInitialMetadata;
-  friend class grpc::Channel;
-  template <class R>
-  friend class grpc::ClientReader;
-  template <class W>
-  friend class grpc::ClientWriter;
-  template <class W, class R>
-  friend class grpc::ClientReaderWriter;
-  template <class R>
-  friend class grpc::ClientAsyncReader;
-  template <class W>
-  friend class grpc::ClientAsyncWriter;
-  template <class W, class R>
-  friend class grpc::ClientAsyncReaderWriter;
-  template <class R>
-  friend class grpc::ClientAsyncResponseReader;
-  friend class grpc::internal::ClientAsyncResponseReaderHelper;
-  template <class InputMessage, class OutputMessage>
-  friend class grpc::internal::BlockingUnaryCallImpl;
-  template <class InputMessage, class OutputMessage>
-  friend class grpc::internal::CallbackUnaryCallImpl;
-  template <class Request, class Response>
-  friend class grpc::internal::ClientCallbackReaderWriterImpl;
-  template <class Response>
-  friend class grpc::internal::ClientCallbackReaderImpl;
-  template <class Request>
-  friend class grpc::internal::ClientCallbackWriterImpl;
-  friend class grpc::internal::ClientCallbackUnaryImpl;
-  friend class grpc::internal::ClientContextAccessor;
-
-  // Used by friend class CallOpClientRecvStatus
-  void set_debug_error_string(const TString& debug_error_string) {
-    debug_error_string_ = debug_error_string;
-  }
-
-  grpc_call* call() const { return call_; }
-  void set_call(grpc_call* call, const std::shared_ptr<grpc::Channel>& channel);
-
-  grpc::experimental::ClientRpcInfo* set_client_rpc_info(
-      const char* method, const char* suffix_for_stats,
-      grpc::internal::RpcMethod::RpcType type, grpc::ChannelInterface* channel,
-      const std::vector<std::unique_ptr<
-          grpc::experimental::ClientInterceptorFactoryInterface>>& creators,
-      size_t interceptor_pos) {
-    rpc_info_ = grpc::experimental::ClientRpcInfo(this, type, method,
-                                                  suffix_for_stats, channel);
-    rpc_info_.RegisterInterceptors(creators, interceptor_pos);
-    return &rpc_info_;
-  }
-
-  uint32_t initial_metadata_flags() const {
-    return (wait_for_ready_ ? GRPC_INITIAL_METADATA_WAIT_FOR_READY : 0) |
-           (wait_for_ready_explicitly_set_
-                ? GRPC_INITIAL_METADATA_WAIT_FOR_READY_EXPLICITLY_SET
-                : 0);
-  }
-
-  TString authority() { return authority_; }
-
-  void SendCancelToInterceptors();
-
-  static std::unique_ptr<ClientContext> FromInternalServerContext(
-      const grpc::ServerContextBase& server_context,
-      PropagationOptions options);
-
-  bool initial_metadata_received_;
-  bool wait_for_ready_;
-  bool wait_for_ready_explicitly_set_;
-  std::shared_ptr<grpc::Channel> channel_;
-  grpc::internal::Mutex mu_;
-  grpc_call* call_;
-  bool call_canceled_;
-  gpr_timespec deadline_;
-  grpc::string authority_;
-  std::shared_ptr<grpc::CallCredentials> creds_;
-  mutable std::shared_ptr<const grpc::AuthContext> auth_context_;
-  struct census_context* census_context_;
-  std::multimap<TString, TString> send_initial_metadata_;
-  mutable grpc::internal::MetadataMap recv_initial_metadata_;
-  mutable grpc::internal::MetadataMap trailing_metadata_;
-
-  grpc_call* propagate_from_call_;
-  PropagationOptions propagation_options_;
-
-  grpc_compression_algorithm compression_algorithm_;
-  bool initial_metadata_corked_;
-
-  TString debug_error_string_;
-
-  grpc::experimental::ClientRpcInfo rpc_info_;
-};
-
-}  // namespace grpc
-
-#endif  // GRPCPP_IMPL_CODEGEN_CLIENT_CONTEXT_H
diff --git a/contrib/libs/grpc/include/grpcpp/impl/codegen/client_interceptor.h b/contrib/libs/grpc/include/grpcpp/impl/codegen/client_interceptor.h
deleted file mode 100644
index 1c6b8ce51f..0000000000
--- a/contrib/libs/grpc/include/grpcpp/impl/codegen/client_interceptor.h
+++ /dev/null
@@ -1,27 +0,0 @@
-/*
- *
- * Copyright 2018 gRPC authors.
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
- */
-
-#ifndef GRPCPP_IMPL_CODEGEN_CLIENT_INTERCEPTOR_H
-#define GRPCPP_IMPL_CODEGEN_CLIENT_INTERCEPTOR_H
-
-// IWYU pragma: private
-
-/// TODO(chengyuc): Remove this file after solving compatibility.
-#include <grpcpp/support/client_interceptor.h>
-
-#endif  // GRPCPP_IMPL_CODEGEN_CLIENT_INTERCEPTOR_H
diff --git a/contrib/libs/grpc/include/grpcpp/impl/codegen/completion_queue.h b/contrib/libs/grpc/include/grpcpp/impl/codegen/completion_queue.h
deleted file mode 100644
index 33786f6e65..0000000000
--- a/contrib/libs/grpc/include/grpcpp/impl/codegen/completion_queue.h
+++ /dev/null
@@ -1,466 +0,0 @@
-/*
- *
- * Copyright 2015-2016 gRPC authors.
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
- */
-
-/// A completion queue implements a concurrent producer-consumer queue, with
-/// two main API-exposed methods: \a Next and \a AsyncNext. These
-/// methods are the essential component of the gRPC C++ asynchronous API.
-/// There is also a \a Shutdown method to indicate that a given completion queue
-/// will no longer have regular events. This must be called before the
-/// completion queue is destroyed.
-/// All completion queue APIs are thread-safe and may be used concurrently with
-/// any other completion queue API invocation; it is acceptable to have
-/// multiple threads calling \a Next or \a AsyncNext on the same or different
-/// completion queues, or to call these methods concurrently with a \a Shutdown
-/// elsewhere.
-/// \remark{All other API calls on completion queue should be completed before
-/// a completion queue destructor is called.}
-#ifndef GRPCPP_IMPL_CODEGEN_COMPLETION_QUEUE_H
-#define GRPCPP_IMPL_CODEGEN_COMPLETION_QUEUE_H
-
-// IWYU pragma: private, include <grpcpp/completion_queue.h>
-
-#include <list>
-
-#include <grpc/impl/codegen/atm.h>
-#include <grpcpp/impl/codegen/completion_queue_tag.h>
-#include <grpcpp/impl/codegen/core_codegen_interface.h>
-#include <grpcpp/impl/codegen/grpc_library.h>
-#include <grpcpp/impl/codegen/rpc_service_method.h>
-#include <grpcpp/impl/codegen/status.h>
-#include <grpcpp/impl/codegen/sync.h>
-#include <grpcpp/impl/codegen/time.h>
-
-struct grpc_completion_queue;
-
-namespace grpc {
-template <class R>
-class ClientReader;
-template <class W>
-class ClientWriter;
-template <class W, class R>
-class ClientReaderWriter;
-template <class R>
-class ServerReader;
-template <class W>
-class ServerWriter;
-namespace internal {
-template <class W, class R>
-class ServerReaderWriterBody;
-
-template <class ResponseType>
-void UnaryRunHandlerHelper(
-    const grpc::internal::MethodHandler::HandlerParameter&, ResponseType*,
-    grpc::Status&);
-template <class ServiceType, class RequestType, class ResponseType,
-          class BaseRequestType, class BaseResponseType>
-class RpcMethodHandler;
-template <class ServiceType, class RequestType, class ResponseType>
-class ClientStreamingHandler;
-template <class ServiceType, class RequestType, class ResponseType>
-class ServerStreamingHandler;
-template <class Streamer, bool WriteNeeded>
-class TemplatedBidiStreamingHandler;
-template <grpc::StatusCode code>
-class ErrorMethodHandler;
-}  // namespace internal
-
-class Channel;
-class ChannelInterface;
-class Server;
-class ServerBuilder;
-class ServerContextBase;
-class ServerInterface;
-
-namespace internal {
-class CompletionQueueTag;
-class RpcMethod;
-template <class InputMessage, class OutputMessage>
-class BlockingUnaryCallImpl;
-template <class Op1, class Op2, class Op3, class Op4, class Op5, class Op6>
-class CallOpSet;
-}  // namespace internal
-
-extern CoreCodegenInterface* g_core_codegen_interface;
-
-/// A thin wrapper around \ref grpc_completion_queue (see \ref
-/// src/core/lib/surface/completion_queue.h).
-/// See \ref doc/cpp/perf_notes.md for notes on best practices for high
-/// performance servers.
-class CompletionQueue : private grpc::GrpcLibraryCodegen {
- public:
-  /// Default constructor. Implicitly creates a \a grpc_completion_queue
-  /// instance.
-  CompletionQueue()
-      : CompletionQueue(grpc_completion_queue_attributes{
-            GRPC_CQ_CURRENT_VERSION, GRPC_CQ_NEXT, GRPC_CQ_DEFAULT_POLLING,
-            nullptr}) {}
-
-  /// Wrap \a take, taking ownership of the instance.
-  ///
-  /// \param take The completion queue instance to wrap. Ownership is taken.
-  explicit CompletionQueue(grpc_completion_queue* take);
-
-  /// Destructor. Destroys the owned wrapped completion queue / instance.
-  ~CompletionQueue() override {
-    grpc::g_core_codegen_interface->grpc_completion_queue_destroy(cq_);
-  }
-
-  /// Tri-state return for AsyncNext: SHUTDOWN, GOT_EVENT, TIMEOUT.
-  enum NextStatus {
-    SHUTDOWN,   ///< The completion queue has been shutdown and fully-drained
-    GOT_EVENT,  ///< Got a new event; \a tag will be filled in with its
-                ///< associated value; \a ok indicating its success.
-    TIMEOUT     ///< deadline was reached.
-  };
-
-  /// Read from the queue, blocking until an event is available or the queue is
-  /// shutting down.
-  ///
-  /// \param[out] tag Updated to point to the read event's tag.
-  /// \param[out] ok true if read a successful event, false otherwise.
-  ///
-  /// Note that each tag sent to the completion queue (through RPC operations
-  /// or alarms) will be delivered out of the completion queue by a call to
-  /// Next (or a related method), regardless of whether the operation succeeded
-  /// or not. Success here means that this operation completed in the normal
-  /// valid manner.
-  ///
-  /// Server-side RPC request: \a ok indicates that the RPC has indeed
-  /// been started. If it is false, the server has been Shutdown
-  /// before this particular call got matched to an incoming RPC.
-  ///
-  /// Client-side StartCall/RPC invocation: \a ok indicates that the RPC is
-  /// going to go to the wire. If it is false, it not going to the wire. This
-  /// would happen if the channel is either permanently broken or
-  /// transiently broken but with the fail-fast option. (Note that async unary
-  /// RPCs don't post a CQ tag at this point, nor do client-streaming
-  /// or bidi-streaming RPCs that have the initial metadata corked option set.)
-  ///
-  /// Client-side Write, Client-side WritesDone, Server-side Write,
-  /// Server-side Finish, Server-side SendInitialMetadata (which is
-  /// typically included in Write or Finish when not done explicitly):
-  /// \a ok means that the data/metadata/status/etc is going to go to the
-  /// wire. If it is false, it not going to the wire because the call
-  /// is already dead (i.e., canceled, deadline expired, other side
-  /// dropped the channel, etc).
-  ///
-  /// Client-side Read, Server-side Read, Client-side
-  /// RecvInitialMetadata (which is typically included in Read if not
-  /// done explicitly): \a ok indicates whether there is a valid message
-  /// that got read. If not, you know that there are certainly no more
-  /// messages that can ever be read from this stream. For the client-side
-  /// operations, this only happens because the call is dead. For the
-  /// server-sider operation, though, this could happen because the client
-  /// has done a WritesDone already.
-  ///
-  /// Client-side Finish: \a ok should always be true
-  ///
-  /// Server-side AsyncNotifyWhenDone: \a ok should always be true
-  ///
-  /// Alarm: \a ok is true if it expired, false if it was canceled
-  ///
-  /// \return true if got an event, false if the queue is fully drained and
-  ///         shut down.
-  bool Next(void** tag, bool* ok) {
-    // Check return type == GOT_EVENT... cases:
-    // SHUTDOWN  - queue has been shutdown, return false.
-    // TIMEOUT   - we passed infinity time => queue has been shutdown, return
-    //             false.
-    // GOT_EVENT - we actually got an event, return true.
-    return (AsyncNextInternal(tag, ok,
-                              grpc::g_core_codegen_interface->gpr_inf_future(
-                                  GPR_CLOCK_REALTIME)) == GOT_EVENT);
-  }
-
-  /// Read from the queue, blocking up to \a deadline (or the queue's shutdown).
-  /// Both \a tag and \a ok are updated upon success (if an event is available
-  /// within the \a deadline).  A \a tag points to an arbitrary location usually
-  /// employed to uniquely identify an event.
-  ///
-  /// \param[out] tag Upon success, updated to point to the event's tag.
-  /// \param[out] ok Upon success, true if a successful event, false otherwise
-  ///        See documentation for CompletionQueue::Next for explanation of ok
-  /// \param[in] deadline How long to block in wait for an event.
-  ///
-  /// \return The type of event read.
-  template <typename T>
-  NextStatus AsyncNext(void** tag, bool* ok, const T& deadline) {
-    grpc::TimePoint<T> deadline_tp(deadline);
-    return AsyncNextInternal(tag, ok, deadline_tp.raw_time());
-  }
-
-  /// EXPERIMENTAL
-  /// First executes \a F, then reads from the queue, blocking up to
-  /// \a deadline (or the queue's shutdown).
-  /// Both \a tag and \a ok are updated upon success (if an event is available
-  /// within the \a deadline).  A \a tag points to an arbitrary location usually
-  /// employed to uniquely identify an event.
-  ///
-  /// \param[in] f Function to execute before calling AsyncNext on this queue.
-  /// \param[out] tag Upon success, updated to point to the event's tag.
-  /// \param[out] ok Upon success, true if read a regular event, false
-  /// otherwise.
-  /// \param[in] deadline How long to block in wait for an event.
-  ///
-  /// \return The type of event read.
-  template <typename T, typename F>
-  NextStatus DoThenAsyncNext(F&& f, void** tag, bool* ok, const T& deadline) {
-    CompletionQueueTLSCache cache = CompletionQueueTLSCache(this);
-    f();
-    if (cache.Flush(tag, ok)) {
-      return GOT_EVENT;
-    } else {
-      return AsyncNext(tag, ok, deadline);
-    }
-  }
-
-  /// Request the shutdown of the queue.
-  ///
-  /// \warning This method must be called at some point if this completion queue
-  /// is accessed with Next or AsyncNext. \a Next will not return false
-  /// until this method has been called and all pending tags have been drained.
-  /// (Likewise for \a AsyncNext returning \a NextStatus::SHUTDOWN .)
-  /// Only once either one of these methods does that (that is, once the queue
-  /// has been \em drained) can an instance of this class be destroyed.
-  /// Also note that applications must ensure that no work is enqueued on this
-  /// completion queue after this method is called.
-  void Shutdown();
-
-  /// Returns a \em raw pointer to the underlying \a grpc_completion_queue
-  /// instance.
-  ///
-  /// \warning Remember that the returned instance is owned. No transfer of
-  /// owership is performed.
-  grpc_completion_queue* cq() { return cq_; }
-
- protected:
-  /// Private constructor of CompletionQueue only visible to friend classes
-  explicit CompletionQueue(const grpc_completion_queue_attributes& attributes) {
-    cq_ = grpc::g_core_codegen_interface->grpc_completion_queue_create(
-        grpc::g_core_codegen_interface->grpc_completion_queue_factory_lookup(
-            &attributes),
-        &attributes, nullptr);
-    InitialAvalanching();  // reserve this for the future shutdown
-  }
-
- private:
-  // Friends for access to server registration lists that enable checking and
-  // logging on shutdown
-  friend class grpc::ServerBuilder;
-  friend class grpc::Server;
-
-  // Friend synchronous wrappers so that they can access Pluck(), which is
-  // a semi-private API geared towards the synchronous implementation.
-  template <class R>
-  friend class grpc::ClientReader;
-  template <class W>
-  friend class grpc::ClientWriter;
-  template <class W, class R>
-  friend class grpc::ClientReaderWriter;
-  template <class R>
-  friend class grpc::ServerReader;
-  template <class W>
-  friend class grpc::ServerWriter;
-  template <class W, class R>
-  friend class grpc::internal::ServerReaderWriterBody;
-  template <class ResponseType>
-  friend void grpc::internal::UnaryRunHandlerHelper(
-      const grpc::internal::MethodHandler::HandlerParameter&, ResponseType*,
-      grpc::Status&);
-  template <class ServiceType, class RequestType, class ResponseType>
-  friend class grpc::internal::ClientStreamingHandler;
-  template <class ServiceType, class RequestType, class ResponseType>
-  friend class grpc::internal::ServerStreamingHandler;
-  template <class Streamer, bool WriteNeeded>
-  friend class grpc::internal::TemplatedBidiStreamingHandler;
-  template <grpc::StatusCode code>
-  friend class grpc::internal::ErrorMethodHandler;
-  friend class grpc::ServerContextBase;
-  friend class grpc::ServerInterface;
-  template <class InputMessage, class OutputMessage>
-  friend class grpc::internal::BlockingUnaryCallImpl;
-
-  // Friends that need access to constructor for callback CQ
-  friend class grpc::Channel;
-
-  // For access to Register/CompleteAvalanching
-  template <class Op1, class Op2, class Op3, class Op4, class Op5, class Op6>
-  friend class grpc::internal::CallOpSet;
-
-  /// EXPERIMENTAL
-  /// Creates a Thread Local cache to store the first event
-  /// On this completion queue queued from this thread.  Once
-  /// initialized, it must be flushed on the same thread.
-  class CompletionQueueTLSCache {
-   public:
-    explicit CompletionQueueTLSCache(CompletionQueue* cq);
-    ~CompletionQueueTLSCache();
-    bool Flush(void** tag, bool* ok);
-
-   private:
-    CompletionQueue* cq_;
-    bool flushed_;
-  };
-
-  NextStatus AsyncNextInternal(void** tag, bool* ok, gpr_timespec deadline);
-
-  /// Wraps \a grpc_completion_queue_pluck.
-  /// \warning Must not be mixed with calls to \a Next.
-  bool Pluck(grpc::internal::CompletionQueueTag* tag) {
-    auto deadline =
-        grpc::g_core_codegen_interface->gpr_inf_future(GPR_CLOCK_REALTIME);
-    while (true) {
-      auto ev = grpc::g_core_codegen_interface->grpc_completion_queue_pluck(
-          cq_, tag, deadline, nullptr);
-      bool ok = ev.success != 0;
-      void* ignored = tag;
-      if (tag->FinalizeResult(&ignored, &ok)) {
-        GPR_CODEGEN_ASSERT(ignored == tag);
-        return ok;
-      }
-    }
-  }
-
-  /// Performs a single polling pluck on \a tag.
-  /// \warning Must not be mixed with calls to \a Next.
-  ///
-  /// TODO: sreek - This calls tag->FinalizeResult() even if the cq_ is already
-  /// shutdown. This is most likely a bug and if it is a bug, then change this
-  /// implementation to simple call the other TryPluck function with a zero
-  /// timeout. i.e:
-  ///      TryPluck(tag, gpr_time_0(GPR_CLOCK_REALTIME))
-  void TryPluck(grpc::internal::CompletionQueueTag* tag) {
-    auto deadline =
-        grpc::g_core_codegen_interface->gpr_time_0(GPR_CLOCK_REALTIME);
-    auto ev = grpc::g_core_codegen_interface->grpc_completion_queue_pluck(
-        cq_, tag, deadline, nullptr);
-    if (ev.type == GRPC_QUEUE_TIMEOUT) return;
-    bool ok = ev.success != 0;
-    void* ignored = tag;
-    // the tag must be swallowed if using TryPluck
-    GPR_CODEGEN_ASSERT(!tag->FinalizeResult(&ignored, &ok));
-  }
-
-  /// Performs a single polling pluck on \a tag. Calls tag->FinalizeResult if
-  /// the pluck() was successful and returned the tag.
-  ///
-  /// This exects tag->FinalizeResult (if called) to return 'false' i.e expects
-  /// that the tag is internal not something that is returned to the user.
-  void TryPluck(grpc::internal::CompletionQueueTag* tag,
-                gpr_timespec deadline) {
-    auto ev = grpc::g_core_codegen_interface->grpc_completion_queue_pluck(
-        cq_, tag, deadline, nullptr);
-    if (ev.type == GRPC_QUEUE_TIMEOUT || ev.type == GRPC_QUEUE_SHUTDOWN) {
-      return;
-    }
-
-    bool ok = ev.success != 0;
-    void* ignored = tag;
-    GPR_CODEGEN_ASSERT(!tag->FinalizeResult(&ignored, &ok));
-  }
-
-  /// Manage state of avalanching operations : completion queue tags that
-  /// trigger other completion queue operations. The underlying core completion
-  /// queue should not really shutdown until all avalanching operations have
-  /// been finalized. Note that we maintain the requirement that an avalanche
-  /// registration must take place before CQ shutdown (which must be maintained
-  /// elsehwere)
-  void InitialAvalanching() {
-    gpr_atm_rel_store(&avalanches_in_flight_, static_cast<gpr_atm>(1));
-  }
-  void RegisterAvalanching() {
-    gpr_atm_no_barrier_fetch_add(&avalanches_in_flight_,
-                                 static_cast<gpr_atm>(1));
-  }
-  void CompleteAvalanching() {
-    if (gpr_atm_no_barrier_fetch_add(&avalanches_in_flight_,
-                                     static_cast<gpr_atm>(-1)) == 1) {
-      grpc::g_core_codegen_interface->grpc_completion_queue_shutdown(cq_);
-    }
-  }
-
-  void RegisterServer(const grpc::Server* server) {
-    (void)server;
-#ifndef NDEBUG
-    grpc::internal::MutexLock l(&server_list_mutex_);
-    server_list_.push_back(server);
-#endif
-  }
-  void UnregisterServer(const grpc::Server* server) {
-    (void)server;
-#ifndef NDEBUG
-    grpc::internal::MutexLock l(&server_list_mutex_);
-    server_list_.remove(server);
-#endif
-  }
-  bool ServerListEmpty() const {
-#ifndef NDEBUG
-    grpc::internal::MutexLock l(&server_list_mutex_);
-    return server_list_.empty();
-#endif
-    return true;
-  }
-
-  static CompletionQueue* CallbackAlternativeCQ();
-  static void ReleaseCallbackAlternativeCQ(CompletionQueue* cq);
-
-  grpc_completion_queue* cq_;  // owned
-
-  gpr_atm avalanches_in_flight_;
-
-  // List of servers associated with this CQ. Even though this is only used with
-  // NDEBUG, instantiate it in all cases since otherwise the size will be
-  // inconsistent.
-  mutable grpc::internal::Mutex server_list_mutex_;
-  std::list<const grpc::Server*>
-      server_list_ /* GUARDED_BY(server_list_mutex_) */;
-};
-
-/// A specific type of completion queue used by the processing of notifications
-/// by servers. Instantiated by \a ServerBuilder or Server (for health checker).
-class ServerCompletionQueue : public CompletionQueue {
- public:
-  bool IsFrequentlyPolled() { return polling_type_ != GRPC_CQ_NON_LISTENING; }
-
- protected:
-  /// Default constructor
-  ServerCompletionQueue() : polling_type_(GRPC_CQ_DEFAULT_POLLING) {}
-
- private:
-  /// \param completion_type indicates whether this is a NEXT or CALLBACK
-  /// completion queue.
-  /// \param polling_type Informs the GRPC library about the type of polling
-  /// allowed on this completion queue. See grpc_cq_polling_type's description
-  /// in grpc_types.h for more details.
-  /// \param shutdown_cb is the shutdown callback used for CALLBACK api queues
-  ServerCompletionQueue(grpc_cq_completion_type completion_type,
-                        grpc_cq_polling_type polling_type,
-                        grpc_completion_queue_functor* shutdown_cb)
-      : CompletionQueue(grpc_completion_queue_attributes{
-            GRPC_CQ_CURRENT_VERSION, completion_type, polling_type,
-            shutdown_cb}),
-        polling_type_(polling_type) {}
-
-  grpc_cq_polling_type polling_type_;
-  friend class grpc::ServerBuilder;
-  friend class grpc::Server;
-};
-
-}  // namespace grpc
-
-#endif  // GRPCPP_IMPL_CODEGEN_COMPLETION_QUEUE_H
diff --git a/contrib/libs/grpc/include/grpcpp/impl/codegen/config.h b/contrib/libs/grpc/include/grpcpp/impl/codegen/config.h
index 688fb3a24f..c7bfb198e8 100644
--- a/contrib/libs/grpc/include/grpcpp/impl/codegen/config.h
+++ b/contrib/libs/grpc/include/grpcpp/impl/codegen/config.h
@@ -1,46 +1,27 @@
-/*
- *
- * Copyright 2016 gRPC authors.
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
- */
+//
+//
+// Copyright 2016 gRPC authors.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+//
 
 #ifndef GRPCPP_IMPL_CODEGEN_CONFIG_H
 #define GRPCPP_IMPL_CODEGEN_CONFIG_H
 
-// IWYU pragma: private, include <grpcpp/support/config.h>
+// IWYU pragma: private
 
-#include <util/generic/string.h>
-#include <util/string/cast.h>
-
-/// The following macros are deprecated and appear only for users
-/// with PB files generated using gRPC 1.0.x plugins. They should
-/// not be used in new code
-#define GRPC_OVERRIDE override  // deprecated
-#define GRPC_FINAL final        // deprecated
-
-#ifdef GRPC_CUSTOM_STRING
-#warning GRPC_CUSTOM_STRING is no longer supported. Please use TString.
-#endif
-
-namespace grpc {
-
-// Using grpc::string and grpc::to_string is discouraged in favor of
-// TString and ::ToString. This is only for legacy code using
-// them explictly.
-typedef TString string;
-
-}  // namespace grpc
+/// TODO(chengyuc): Remove this file after solving compatibility.
+#include <grpcpp/support/config.h>
 
 #endif  // GRPCPP_IMPL_CODEGEN_CONFIG_H
diff --git a/contrib/libs/grpc/include/grpcpp/impl/codegen/config_protobuf.h b/contrib/libs/grpc/include/grpcpp/impl/codegen/config_protobuf.h
index da874c58eb..e1f3d40ac9 100644
--- a/contrib/libs/grpc/include/grpcpp/impl/codegen/config_protobuf.h
+++ b/contrib/libs/grpc/include/grpcpp/impl/codegen/config_protobuf.h
@@ -1,20 +1,20 @@
-/*
- *
- * Copyright 2015 gRPC authors.
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
- */
+//
+//
+// Copyright 2015 gRPC authors.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+//
 
 #ifndef GRPCPP_IMPL_CODEGEN_CONFIG_PROTOBUF_H
 #define GRPCPP_IMPL_CODEGEN_CONFIG_PROTOBUF_H
diff --git a/contrib/libs/grpc/include/grpcpp/impl/codegen/core_codegen.h b/contrib/libs/grpc/include/grpcpp/impl/codegen/core_codegen.h
deleted file mode 100644
index 340dc47faa..0000000000
--- a/contrib/libs/grpc/include/grpcpp/impl/codegen/core_codegen.h
+++ /dev/null
@@ -1,131 +0,0 @@
-/*
- *
- * Copyright 2016 gRPC authors.
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
- */
-
-#ifndef GRPCPP_IMPL_CODEGEN_CORE_CODEGEN_H
-#define GRPCPP_IMPL_CODEGEN_CORE_CODEGEN_H
-
-// IWYU pragma: private
-
-// This file should be compiled as part of grpcpp.
-
-#include <grpc/byte_buffer.h>
-#include <grpc/grpc.h>
-#include <grpc/impl/codegen/grpc_types.h>
-#include <grpcpp/impl/codegen/core_codegen_interface.h>
-
-namespace grpc {
-
-/// Implementation of the core codegen interface.
-class CoreCodegen final : public CoreCodegenInterface {
- private:
-  const grpc_completion_queue_factory* grpc_completion_queue_factory_lookup(
-      const grpc_completion_queue_attributes* attributes) override;
-  grpc_completion_queue* grpc_completion_queue_create(
-      const grpc_completion_queue_factory* factory,
-      const grpc_completion_queue_attributes* attributes,
-      void* reserved) override;
-  grpc_completion_queue* grpc_completion_queue_create_for_next(
-      void* reserved) override;
-  grpc_completion_queue* grpc_completion_queue_create_for_pluck(
-      void* reserved) override;
-  void grpc_completion_queue_shutdown(grpc_completion_queue* cq) override;
-  void grpc_completion_queue_destroy(grpc_completion_queue* cq) override;
-  grpc_event grpc_completion_queue_pluck(grpc_completion_queue* cq, void* tag,
-                                         gpr_timespec deadline,
-                                         void* reserved) override;
-
-  void* gpr_malloc(size_t size) override;
-  void gpr_free(void* p) override;
-
-  void grpc_init() override;
-  void grpc_shutdown() override;
-
-  void gpr_mu_init(gpr_mu* mu) override;
-  void gpr_mu_destroy(gpr_mu* mu) override;
-  void gpr_mu_lock(gpr_mu* mu) override;
-  void gpr_mu_unlock(gpr_mu* mu) override;
-  void gpr_cv_init(gpr_cv* cv) override;
-  void gpr_cv_destroy(gpr_cv* cv) override;
-  int gpr_cv_wait(gpr_cv* cv, gpr_mu* mu, gpr_timespec abs_deadline) override;
-  void gpr_cv_signal(gpr_cv* cv) override;
-  void gpr_cv_broadcast(gpr_cv* cv) override;
-
-  grpc_call_error grpc_call_start_batch(grpc_call* call, const grpc_op* ops,
-                                        size_t nops, void* tag,
-                                        void* reserved) override;
-  grpc_call_error grpc_call_cancel_with_status(grpc_call* call,
-                                               grpc_status_code status,
-                                               const char* description,
-                                               void* reserved) override;
-  int grpc_call_failed_before_recv_message(const grpc_call* c) override;
-  void grpc_call_ref(grpc_call* call) override;
-  void grpc_call_unref(grpc_call* call) override;
-  void* grpc_call_arena_alloc(grpc_call* call, size_t length) override;
-  const char* grpc_call_error_to_string(grpc_call_error error) override;
-
-  grpc_byte_buffer* grpc_byte_buffer_copy(grpc_byte_buffer* bb) override;
-  void grpc_byte_buffer_destroy(grpc_byte_buffer* bb) override;
-  size_t grpc_byte_buffer_length(grpc_byte_buffer* bb) override;
-
-  int grpc_byte_buffer_reader_init(grpc_byte_buffer_reader* reader,
-                                   grpc_byte_buffer* buffer) override;
-  void grpc_byte_buffer_reader_destroy(
-      grpc_byte_buffer_reader* reader) override;
-  int grpc_byte_buffer_reader_next(grpc_byte_buffer_reader* reader,
-                                   grpc_slice* slice) override;
-  int grpc_byte_buffer_reader_peek(grpc_byte_buffer_reader* reader,
-                                   grpc_slice** slice) override;
-
-  grpc_byte_buffer* grpc_raw_byte_buffer_create(grpc_slice* slice,
-                                                size_t nslices) override;
-  grpc_slice grpc_slice_new_with_user_data(void* p, size_t len,
-                                           void (*destroy)(void*),
-                                           void* user_data) override;
-  grpc_slice grpc_slice_new_with_len(void* p, size_t len,
-                                     void (*destroy)(void*, size_t)) override;
-  grpc_slice grpc_empty_slice() override;
-  grpc_slice grpc_slice_malloc(size_t length) override;
-  void grpc_slice_unref(grpc_slice slice) override;
-  grpc_slice grpc_slice_ref(grpc_slice slice) override;
-  grpc_slice grpc_slice_split_tail(grpc_slice* s, size_t split) override;
-  grpc_slice grpc_slice_split_head(grpc_slice* s, size_t split) override;
-  grpc_slice grpc_slice_sub(grpc_slice s, size_t begin, size_t end) override;
-  void grpc_slice_buffer_add(grpc_slice_buffer* sb, grpc_slice slice) override;
-  void grpc_slice_buffer_pop(grpc_slice_buffer* sb) override;
-  void grpc_slice_buffer_add_indexed(grpc_slice_buffer* sb,
-                                     grpc_slice slice) override;
-  grpc_slice grpc_slice_from_static_buffer(const void* buffer,
-                                           size_t length) override;
-  grpc_slice grpc_slice_from_copied_buffer(const void* buffer,
-                                           size_t length) override;
-  void grpc_metadata_array_init(grpc_metadata_array* array) override;
-  void grpc_metadata_array_destroy(grpc_metadata_array* array) override;
-
-  gpr_timespec gpr_inf_future(gpr_clock_type type) override;
-  gpr_timespec gpr_time_0(gpr_clock_type type) override;
-
-  const Status& ok() override;
-  const Status& cancelled() override;
-
-  void assert_fail(const char* failed_assertion, const char* file,
-                   int line) override;
-};
-
-}  // namespace grpc
-
-#endif  // GRPCPP_IMPL_CODEGEN_CORE_CODEGEN_H
diff --git a/contrib/libs/grpc/include/grpcpp/impl/codegen/core_codegen_interface.h b/contrib/libs/grpc/include/grpcpp/impl/codegen/core_codegen_interface.h
deleted file mode 100644
index 5ca1feff08..0000000000
--- a/contrib/libs/grpc/include/grpcpp/impl/codegen/core_codegen_interface.h
+++ /dev/null
@@ -1,169 +0,0 @@
-/*
- *
- * Copyright 2015 gRPC authors.
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
- */
-
-#ifndef GRPCPP_IMPL_CODEGEN_CORE_CODEGEN_INTERFACE_H
-#define GRPCPP_IMPL_CODEGEN_CORE_CODEGEN_INTERFACE_H
-
-// IWYU pragma: private
-
-#include <grpc/impl/codegen/byte_buffer.h>
-#include <grpc/impl/codegen/byte_buffer_reader.h>
-#include <grpc/impl/codegen/grpc_types.h>
-#include <grpc/impl/codegen/sync.h>
-#include <grpcpp/impl/codegen/config.h>
-#include <grpcpp/impl/codegen/status.h>
-
-namespace grpc {
-
-/// Interface between the codegen library and the minimal subset of core
-/// features required by the generated code.
-///
-/// All undocumented methods are simply forwarding the call to their namesakes.
-/// Please refer to their corresponding documentation for details.
-///
-/// \warning This interface should be considered internal and private.
-class CoreCodegenInterface {
- public:
-  virtual ~CoreCodegenInterface() = default;
-
-  /// Upon a failed assertion, log the error.
-  virtual void assert_fail(const char* failed_assertion, const char* file,
-                           int line) = 0;
-
-  virtual const grpc_completion_queue_factory*
-  grpc_completion_queue_factory_lookup(
-      const grpc_completion_queue_attributes* attributes) = 0;
-  virtual grpc_completion_queue* grpc_completion_queue_create(
-      const grpc_completion_queue_factory* factory,
-      const grpc_completion_queue_attributes* attributes, void* reserved) = 0;
-  virtual grpc_completion_queue* grpc_completion_queue_create_for_next(
-      void* reserved) = 0;
-  virtual grpc_completion_queue* grpc_completion_queue_create_for_pluck(
-      void* reserved) = 0;
-  virtual void grpc_completion_queue_shutdown(grpc_completion_queue* cq) = 0;
-  virtual void grpc_completion_queue_destroy(grpc_completion_queue* cq) = 0;
-  virtual grpc_event grpc_completion_queue_pluck(grpc_completion_queue* cq,
-                                                 void* tag,
-                                                 gpr_timespec deadline,
-                                                 void* reserved) = 0;
-
-  virtual void* gpr_malloc(size_t size) = 0;
-  virtual void gpr_free(void* p) = 0;
-
-  // These are only to be used to fix edge cases involving grpc_init and
-  // grpc_shutdown. Calling grpc_init from the codegen interface before
-  // the real grpc_init is called will cause a crash, so if you use this
-  // function, ensure that it is not the first call to grpc_init.
-  virtual void grpc_init() = 0;
-  virtual void grpc_shutdown() = 0;
-
-  virtual void gpr_mu_init(gpr_mu* mu) = 0;
-  virtual void gpr_mu_destroy(gpr_mu* mu) = 0;
-  virtual void gpr_mu_lock(gpr_mu* mu) = 0;
-  virtual void gpr_mu_unlock(gpr_mu* mu) = 0;
-  virtual void gpr_cv_init(gpr_cv* cv) = 0;
-  virtual void gpr_cv_destroy(gpr_cv* cv) = 0;
-  virtual int gpr_cv_wait(gpr_cv* cv, gpr_mu* mu,
-                          gpr_timespec abs_deadline) = 0;
-  virtual void gpr_cv_signal(gpr_cv* cv) = 0;
-  virtual void gpr_cv_broadcast(gpr_cv* cv) = 0;
-
-  virtual grpc_byte_buffer* grpc_byte_buffer_copy(grpc_byte_buffer* bb) = 0;
-  virtual void grpc_byte_buffer_destroy(grpc_byte_buffer* bb) = 0;
-  virtual size_t grpc_byte_buffer_length(grpc_byte_buffer* bb)
-      GRPC_MUST_USE_RESULT = 0;
-
-  virtual int grpc_byte_buffer_reader_init(grpc_byte_buffer_reader* reader,
-                                           grpc_byte_buffer* buffer)
-      GRPC_MUST_USE_RESULT = 0;
-  virtual void grpc_byte_buffer_reader_destroy(
-      grpc_byte_buffer_reader* reader) = 0;
-  virtual int grpc_byte_buffer_reader_next(grpc_byte_buffer_reader* reader,
-                                           grpc_slice* slice) = 0;
-  virtual int grpc_byte_buffer_reader_peek(grpc_byte_buffer_reader* reader,
-                                           grpc_slice** slice) = 0;
-
-  virtual grpc_byte_buffer* grpc_raw_byte_buffer_create(grpc_slice* slice,
-                                                        size_t nslices) = 0;
-  virtual grpc_slice grpc_slice_new_with_user_data(void* p, size_t len,
-                                                   void (*destroy)(void*),
-                                                   void* user_data) = 0;
-  virtual grpc_slice grpc_slice_new_with_len(void* p, size_t len,
-                                             void (*destroy)(void*,
-                                                             size_t)) = 0;
-  virtual grpc_call_error grpc_call_start_batch(grpc_call* call,
-                                                const grpc_op* ops, size_t nops,
-                                                void* tag, void* reserved) = 0;
-  virtual grpc_call_error grpc_call_cancel_with_status(grpc_call* call,
-                                                       grpc_status_code status,
-                                                       const char* description,
-                                                       void* reserved) = 0;
-  virtual int grpc_call_failed_before_recv_message(const grpc_call* c) = 0;
-  virtual void grpc_call_ref(grpc_call* call) = 0;
-  virtual void grpc_call_unref(grpc_call* call) = 0;
-  virtual void* grpc_call_arena_alloc(grpc_call* call, size_t length) = 0;
-  virtual const char* grpc_call_error_to_string(grpc_call_error error) = 0;
-  virtual grpc_slice grpc_empty_slice() = 0;
-  virtual grpc_slice grpc_slice_malloc(size_t length) = 0;
-  virtual void grpc_slice_unref(grpc_slice slice) = 0;
-  virtual grpc_slice grpc_slice_ref(grpc_slice slice) = 0;
-  virtual grpc_slice grpc_slice_split_tail(grpc_slice* s, size_t split) = 0;
-  virtual grpc_slice grpc_slice_split_head(grpc_slice* s, size_t split) = 0;
-  virtual grpc_slice grpc_slice_sub(grpc_slice s, size_t begin, size_t end) = 0;
-  virtual void grpc_slice_buffer_add(grpc_slice_buffer* sb,
-                                     grpc_slice slice) = 0;
-  virtual void grpc_slice_buffer_add_indexed(grpc_slice_buffer* sb,
-                                             grpc_slice slice) = 0;
-  virtual void grpc_slice_buffer_pop(grpc_slice_buffer* sb) = 0;
-  virtual grpc_slice grpc_slice_from_static_buffer(const void* buffer,
-                                                   size_t length) = 0;
-  virtual grpc_slice grpc_slice_from_copied_buffer(const void* buffer,
-                                                   size_t length) = 0;
-
-  virtual void grpc_metadata_array_init(grpc_metadata_array* array) = 0;
-  virtual void grpc_metadata_array_destroy(grpc_metadata_array* array) = 0;
-
-  virtual const Status& ok() = 0;
-  virtual const Status& cancelled() = 0;
-
-  virtual gpr_timespec gpr_inf_future(gpr_clock_type type) = 0;
-  virtual gpr_timespec gpr_time_0(gpr_clock_type type) = 0;
-};
-
-extern CoreCodegenInterface* g_core_codegen_interface;
-
-/// Codegen specific version of \a GPR_ASSERT.
-#define GPR_CODEGEN_ASSERT(x)                                              \
-  do {                                                                     \
-    if (GPR_UNLIKELY(!(x))) {                                              \
-      grpc::g_core_codegen_interface->assert_fail(#x, __FILE__, __LINE__); \
-    }                                                                      \
-  } while (0)
-
-/// Codegen specific version of \a GPR_DEBUG_ASSERT.
-#ifndef NDEBUG
-#define GPR_CODEGEN_DEBUG_ASSERT(x) GPR_CODEGEN_ASSERT(x)
-#else
-#define GPR_CODEGEN_DEBUG_ASSERT(x) \
-  do {                              \
-  } while (0)
-#endif
-
-}  // namespace grpc
-
-#endif  // GRPCPP_IMPL_CODEGEN_CORE_CODEGEN_INTERFACE_H
diff --git a/contrib/libs/grpc/include/grpcpp/impl/codegen/create_auth_context.h b/contrib/libs/grpc/include/grpcpp/impl/codegen/create_auth_context.h
index 817988f3aa..9120100cd6 100644
--- a/contrib/libs/grpc/include/grpcpp/impl/codegen/create_auth_context.h
+++ b/contrib/libs/grpc/include/grpcpp/impl/codegen/create_auth_context.h
@@ -1,35 +1,27 @@
-/*
- *
- * Copyright 2015 gRPC authors.
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
- */
+//
+//
+// Copyright 2015 gRPC authors.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+//
 
 #ifndef GRPCPP_IMPL_CODEGEN_CREATE_AUTH_CONTEXT_H
 #define GRPCPP_IMPL_CODEGEN_CREATE_AUTH_CONTEXT_H
 
 // IWYU pragma: private
 
-#include <memory>
-
-#include <grpc/impl/codegen/grpc_types.h>
-#include <grpcpp/impl/codegen/security/auth_context.h>
-
-namespace grpc {
-
-std::shared_ptr<const AuthContext> CreateAuthContext(grpc_call* call);
-
-}  // namespace grpc
+/// TODO(chengyuc): Remove this file after solving compatibility.
+#include <grpcpp/impl/create_auth_context.h>
 
 #endif  // GRPCPP_IMPL_CODEGEN_CREATE_AUTH_CONTEXT_H
diff --git a/contrib/libs/grpc/include/grpcpp/impl/codegen/grpc_library.h b/contrib/libs/grpc/include/grpcpp/impl/codegen/grpc_library.h
deleted file mode 100644
index 9f83a7f938..0000000000
--- a/contrib/libs/grpc/include/grpcpp/impl/codegen/grpc_library.h
+++ /dev/null
@@ -1,67 +0,0 @@
-/*
- *
- * Copyright 2016 gRPC authors.
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
- */
-
-#ifndef GRPCPP_IMPL_CODEGEN_GRPC_LIBRARY_H
-#define GRPCPP_IMPL_CODEGEN_GRPC_LIBRARY_H
-
-// IWYU pragma: private, include <grpcpp/impl/grpc_library.h>
-
-#include <grpcpp/impl/codegen/core_codegen_interface.h>
-
-namespace grpc {
-
-class GrpcLibraryInterface {
- public:
-  virtual ~GrpcLibraryInterface() = default;
-  virtual void init() = 0;
-  virtual void shutdown() = 0;
-};
-
-/// Initialized by \a grpc::GrpcLibraryInitializer from
-/// <grpcpp/impl/grpc_library.h>
-extern GrpcLibraryInterface* g_glip;
-
-/// Classes that require gRPC to be initialized should inherit from this class.
-class GrpcLibraryCodegen {
- public:
-  explicit GrpcLibraryCodegen(bool call_grpc_init = true)
-      : grpc_init_called_(false) {
-    if (call_grpc_init) {
-      GPR_CODEGEN_ASSERT(g_glip &&
-                         "gRPC library not initialized. See "
-                         "grpc::internal::GrpcLibraryInitializer.");
-      g_glip->init();
-      grpc_init_called_ = true;
-    }
-  }
-  virtual ~GrpcLibraryCodegen() {
-    if (grpc_init_called_) {
-      GPR_CODEGEN_ASSERT(g_glip &&
-                         "gRPC library not initialized. See "
-                         "grpc::internal::GrpcLibraryInitializer.");
-      g_glip->shutdown();
-    }
-  }
-
- private:
-  bool grpc_init_called_;
-};
-
-}  // namespace grpc
-
-#endif  // GRPCPP_IMPL_CODEGEN_GRPC_LIBRARY_H
diff --git a/contrib/libs/grpc/include/grpcpp/impl/codegen/intercepted_channel.h b/contrib/libs/grpc/include/grpcpp/impl/codegen/intercepted_channel.h
index 57c97dd60f..2f41207868 100644
--- a/contrib/libs/grpc/include/grpcpp/impl/codegen/intercepted_channel.h
+++ b/contrib/libs/grpc/include/grpcpp/impl/codegen/intercepted_channel.h
@@ -1,85 +1,27 @@
-/*
- *
- * Copyright 2018 gRPC authors.
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
- */
+//
+//
+// Copyright 2018 gRPC authors.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+//
 
 #ifndef GRPCPP_IMPL_CODEGEN_INTERCEPTED_CHANNEL_H
 #define GRPCPP_IMPL_CODEGEN_INTERCEPTED_CHANNEL_H
 
 // IWYU pragma: private
 
-#include <grpcpp/impl/codegen/channel_interface.h>
-
-namespace grpc {
-class CompletionQueue;
-
-namespace internal {
-
-class InterceptorBatchMethodsImpl;
-
-/// An InterceptedChannel is available to client Interceptors. An
-/// InterceptedChannel is unique to an interceptor, and when an RPC is started
-/// on this channel, only those interceptors that come after this interceptor
-/// see the RPC.
-class InterceptedChannel : public ChannelInterface {
- public:
-  ~InterceptedChannel() override { channel_ = nullptr; }
-
-  /// Get the current channel state. If the channel is in IDLE and
-  /// \a try_to_connect is set to true, try to connect.
-  grpc_connectivity_state GetState(bool try_to_connect) override {
-    return channel_->GetState(try_to_connect);
-  }
-
- private:
-  InterceptedChannel(ChannelInterface* channel, size_t pos)
-      : channel_(channel), interceptor_pos_(pos) {}
-
-  Call CreateCall(const RpcMethod& method, grpc::ClientContext* context,
-                  grpc::CompletionQueue* cq) override {
-    return channel_->CreateCallInternal(method, context, cq, interceptor_pos_);
-  }
-
-  void PerformOpsOnCall(CallOpSetInterface* ops, Call* call) override {
-    return channel_->PerformOpsOnCall(ops, call);
-  }
-  void* RegisterMethod(const char* method) override {
-    return channel_->RegisterMethod(method);
-  }
-
-  void NotifyOnStateChangeImpl(grpc_connectivity_state last_observed,
-                               gpr_timespec deadline, grpc::CompletionQueue* cq,
-                               void* tag) override {
-    return channel_->NotifyOnStateChangeImpl(last_observed, deadline, cq, tag);
-  }
-  bool WaitForStateChangeImpl(grpc_connectivity_state last_observed,
-                              gpr_timespec deadline) override {
-    return channel_->WaitForStateChangeImpl(last_observed, deadline);
-  }
-
-  grpc::CompletionQueue* CallbackCQ() override {
-    return channel_->CallbackCQ();
-  }
-
-  ChannelInterface* channel_;
-  size_t interceptor_pos_;
-
-  friend class InterceptorBatchMethodsImpl;
-};
-}  // namespace internal
-}  // namespace grpc
+/// TODO(chengyuc): Remove this file after solving compatibility.
+#include <grpcpp/impl/intercepted_channel.h>
 
 #endif  // GRPCPP_IMPL_CODEGEN_INTERCEPTED_CHANNEL_H
diff --git a/contrib/libs/grpc/include/grpcpp/impl/codegen/interceptor.h b/contrib/libs/grpc/include/grpcpp/impl/codegen/interceptor.h
deleted file mode 100644
index b66c6656ae..0000000000
--- a/contrib/libs/grpc/include/grpcpp/impl/codegen/interceptor.h
+++ /dev/null
@@ -1,234 +0,0 @@
-/*
- *
- * Copyright 2018 gRPC authors.
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
- */
-
-#ifndef GRPCPP_IMPL_CODEGEN_INTERCEPTOR_H
-#define GRPCPP_IMPL_CODEGEN_INTERCEPTOR_H
-
-// IWYU pragma: private, include <grpcpp/support/interceptor.h>
-
-#include <map>
-#include <memory>
-#include <util/generic/string.h>
-#include <util/string/cast.h>
-
-#include <grpc/impl/codegen/grpc_types.h>
-#include <grpcpp/impl/codegen/config.h>
-#include <grpcpp/impl/codegen/core_codegen_interface.h>
-#include <grpcpp/impl/codegen/metadata_map.h>
-#include <grpcpp/impl/codegen/string_ref.h>
-#include <grpcpp/support/byte_buffer.h>
-
-namespace grpc {
-
-class ChannelInterface;
-class Status;
-
-namespace experimental {
-
-/// An enumeration of different possible points at which the \a Intercept
-/// method of the \a Interceptor interface may be called. Any given call
-/// to \a Intercept will include one or more of these hook points, and
-/// each hook point makes certain types of information available to the
-/// interceptor.
-/// In these enumeration names, PRE_SEND means that an interception has taken
-/// place between the time the application provided a certain type of data
-/// (e.g., initial metadata, status) and the time that that data goes to the
-/// other side. POST_SEND means that the data has been committed for going to
-/// the other side (even if it has not yet been received at the other side).
-/// PRE_RECV means an interception between the time that a certain
-/// operation has been requested and it is available. POST_RECV means that a
-/// result is available but has not yet been passed back to the application.
-/// A batch of interception points will only contain either PRE or POST hooks
-/// but not both types. For example, a batch with PRE_SEND hook points will not
-/// contain POST_RECV or POST_SEND ops. Likewise, a batch with POST_* ops can
-/// not contain PRE_* ops.
-enum class InterceptionHookPoints {
-  /// The first three in this list are for clients and servers
-  PRE_SEND_INITIAL_METADATA,
-  PRE_SEND_MESSAGE,
-  POST_SEND_MESSAGE,
-  PRE_SEND_STATUS,  // server only
-  PRE_SEND_CLOSE,   // client only: WritesDone for stream; after write in unary
-  /// The following three are for hijacked clients only. A batch with PRE_RECV_*
-  /// hook points will never contain hook points of other types.
-  PRE_RECV_INITIAL_METADATA,
-  PRE_RECV_MESSAGE,
-  PRE_RECV_STATUS,
-  /// The following two are for all clients and servers
-  POST_RECV_INITIAL_METADATA,
-  POST_RECV_MESSAGE,
-  POST_RECV_STATUS,  // client only
-  POST_RECV_CLOSE,   // server only
-  /// This is a special hook point available to both clients and servers when
-  /// TryCancel() is performed.
-  ///  - No other hook points will be present along with this.
-  ///  - It is illegal for an interceptor to block/delay this operation.
-  ///  - ALL interceptors see this hook point irrespective of whether the
-  ///    RPC was hijacked or not.
-  PRE_SEND_CANCEL,
-  NUM_INTERCEPTION_HOOKS
-};
-
-/// Class that is passed as an argument to the \a Intercept method
-/// of the application's \a Interceptor interface implementation. It has five
-/// purposes:
-///   1. Indicate which hook points are present at a specific interception
-///   2. Allow an interceptor to inform the library that an RPC should
-///      continue to the next stage of its processing (which may be another
-///      interceptor or the main path of the library)
-///   3. Allow an interceptor to hijack the processing of the RPC (only for
-///      client-side RPCs with PRE_SEND_INITIAL_METADATA) so that it does not
-///      proceed with normal processing beyond that stage
-///   4. Access the relevant fields of an RPC at each interception point
-///   5. Set some fields of an RPC at each interception point, when possible
-class InterceptorBatchMethods {
- public:
-  virtual ~InterceptorBatchMethods() {}
-  /// Determine whether the current batch has an interception hook point
-  /// of type \a type
-  virtual bool QueryInterceptionHookPoint(InterceptionHookPoints type) = 0;
-  /// Signal that the interceptor is done intercepting the current batch of the
-  /// RPC. Every interceptor must either call Proceed or Hijack on each
-  /// interception. In most cases, only Proceed will be used. Explicit use of
-  /// Proceed is what enables interceptors to delay the processing of RPCs
-  /// while they perform other work.
-  /// Proceed is a no-op if the batch contains PRE_SEND_CANCEL. Simply returning
-  /// from the Intercept method does the job of continuing the RPC in this case.
-  /// This is because PRE_SEND_CANCEL is always in a separate batch and is not
-  /// allowed to be delayed.
-  virtual void Proceed() = 0;
-  /// Indicate that the interceptor has hijacked the RPC (only valid if the
-  /// batch contains send_initial_metadata on the client side). Later
-  /// interceptors in the interceptor list will not be called. Later batches
-  /// on the same RPC will go through interception, but only up to the point
-  /// of the hijacking interceptor.
-  virtual void Hijack() = 0;
-
-  /// Send Message Methods
-  /// GetSerializedSendMessage and GetSendMessage/ModifySendMessage are the
-  /// available methods to view and modify the request payload. An interceptor
-  /// can access the payload in either serialized form or non-serialized form
-  /// but not both at the same time.
-  /// gRPC performs serialization in a lazy manner, which means
-  /// that a call to GetSerializedSendMessage will result in a serialization
-  /// operation if the payload stored is not in the serialized form already; the
-  /// non-serialized form will be lost and GetSendMessage will no longer return
-  /// a valid pointer, and this will remain true for later interceptors too.
-  /// This can change however if ModifySendMessage is used to replace the
-  /// current payload. Note that ModifySendMessage requires a new payload
-  /// message in the non-serialized form. This will overwrite the existing
-  /// payload irrespective of whether it had been serialized earlier. Also note
-  /// that gRPC Async API requires early serialization of the payload which
-  /// means that the payload would be available in the serialized form only
-  /// unless an interceptor replaces the payload with ModifySendMessage.
-
-  /// Returns a modifable ByteBuffer holding the serialized form of the message
-  /// that is going to be sent. Valid for PRE_SEND_MESSAGE interceptions.
-  /// A return value of nullptr indicates that this ByteBuffer is not valid.
-  virtual ByteBuffer* GetSerializedSendMessage() = 0;
-
-  /// Returns a non-modifiable pointer to the non-serialized form of the message
-  /// to be sent. Valid for PRE_SEND_MESSAGE interceptions. A return value of
-  /// nullptr indicates that this field is not valid.
-  virtual const void* GetSendMessage() = 0;
-
-  /// Overwrites the message to be sent with \a message. \a message should be in
-  /// the non-serialized form expected by the method. Valid for PRE_SEND_MESSAGE
-  /// interceptions. Note that the interceptor is responsible for maintaining
-  /// the life of the message till it is serialized or it receives the
-  /// POST_SEND_MESSAGE interception point, whichever happens earlier. The
-  /// modifying interceptor may itself force early serialization by calling
-  /// GetSerializedSendMessage.
-  virtual void ModifySendMessage(const void* message) = 0;
-
-  /// Checks whether the SEND MESSAGE op succeeded. Valid for POST_SEND_MESSAGE
-  /// interceptions.
-  virtual bool GetSendMessageStatus() = 0;
-
-  /// Returns a modifiable multimap of the initial metadata to be sent. Valid
-  /// for PRE_SEND_INITIAL_METADATA interceptions. A value of nullptr indicates
-  /// that this field is not valid.
-  virtual std::multimap<TString, TString>* GetSendInitialMetadata() = 0;
-
-  /// Returns the status to be sent. Valid for PRE_SEND_STATUS interceptions.
-  virtual Status GetSendStatus() = 0;
-
-  /// Overwrites the status with \a status. Valid for PRE_SEND_STATUS
-  /// interceptions.
-  virtual void ModifySendStatus(const Status& status) = 0;
-
-  /// Returns a modifiable multimap of the trailing metadata to be sent. Valid
-  /// for PRE_SEND_STATUS interceptions. A value of nullptr indicates
-  /// that this field is not valid.
-  virtual std::multimap<TString, TString>*
-  GetSendTrailingMetadata() = 0;
-
-  /// Returns a pointer to the modifiable received message. Note that the
-  /// message is already deserialized but the type is not set; the interceptor
-  /// should static_cast to the appropriate type before using it. This is valid
-  /// for PRE_RECV_MESSAGE and POST_RECV_MESSAGE interceptions; nullptr for not
-  /// valid
-  virtual void* GetRecvMessage() = 0;
-
-  /// Returns a modifiable multimap of the received initial metadata.
-  /// Valid for PRE_RECV_INITIAL_METADATA and POST_RECV_INITIAL_METADATA
-  /// interceptions; nullptr if not valid
-  virtual std::multimap<grpc::string_ref, grpc::string_ref>*
-  GetRecvInitialMetadata() = 0;
-
-  /// Returns a modifiable view of the received status on PRE_RECV_STATUS and
-  /// POST_RECV_STATUS interceptions; nullptr if not valid.
-  virtual Status* GetRecvStatus() = 0;
-
-  /// Returns a modifiable multimap of the received trailing metadata on
-  /// PRE_RECV_STATUS and POST_RECV_STATUS interceptions; nullptr if not valid
-  virtual std::multimap<grpc::string_ref, grpc::string_ref>*
-  GetRecvTrailingMetadata() = 0;
-
-  /// Gets an intercepted channel. When a call is started on this interceptor,
-  /// only interceptors after the current interceptor are created from the
-  /// factory objects registered with the channel. This allows calls to be
-  /// started from interceptors without infinite regress through the interceptor
-  /// list.
-  virtual std::unique_ptr<ChannelInterface> GetInterceptedChannel() = 0;
-
-  /// On a hijacked RPC, an interceptor can decide to fail a PRE_RECV_MESSAGE
-  /// op. This would be a signal to the reader that there will be no more
-  /// messages, or the stream has failed or been cancelled.
-  virtual void FailHijackedRecvMessage() = 0;
-
-  /// On a hijacked RPC/ to-be hijacked RPC, this can be called to fail a SEND
-  /// MESSAGE op
-  virtual void FailHijackedSendMessage() = 0;
-};
-
-/// Interface for an interceptor. Interceptor authors must create a class
-/// that derives from this parent class.
-class Interceptor {
- public:
-  virtual ~Interceptor() {}
-
-  /// The one public method of an Interceptor interface. Override this to
-  /// trigger the desired actions at the hook points described above.
-  virtual void Intercept(InterceptorBatchMethods* methods) = 0;
-};
-
-}  // namespace experimental
-}  // namespace grpc
-
-#endif  // GRPCPP_IMPL_CODEGEN_INTERCEPTOR_H
diff --git a/contrib/libs/grpc/include/grpcpp/impl/codegen/interceptor_common.h b/contrib/libs/grpc/include/grpcpp/impl/codegen/interceptor_common.h
index f26b82b27e..ddd282d7d3 100644
--- a/contrib/libs/grpc/include/grpcpp/impl/codegen/interceptor_common.h
+++ b/contrib/libs/grpc/include/grpcpp/impl/codegen/interceptor_common.h
@@ -1,20 +1,20 @@
-/*
- *
- * Copyright 2018 gRPC authors.
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
- */
+//
+//
+// Copyright 2018 gRPC authors.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+//
 
 #if defined(__GNUC__)
 #pragma GCC system_header
@@ -25,520 +25,7 @@
 
 // IWYU pragma: private
 
-#include <array>
-#include <functional>
-
-#include <grpc/impl/codegen/grpc_types.h>
-#include <grpcpp/impl/call_op_set_interface.h>
-#include <grpcpp/impl/codegen/call.h>
-#include <grpcpp/impl/codegen/client_interceptor.h>
-#include <grpcpp/impl/codegen/intercepted_channel.h>
-#include <grpcpp/impl/codegen/server_interceptor.h>
-
-namespace grpc {
-namespace internal {
-
-class InterceptorBatchMethodsImpl
-    : public experimental::InterceptorBatchMethods {
- public:
-  InterceptorBatchMethodsImpl() {
-    for (auto i = static_cast<experimental::InterceptionHookPoints>(0);
-         i < experimental::InterceptionHookPoints::NUM_INTERCEPTION_HOOKS;
-         i = static_cast<experimental::InterceptionHookPoints>(
-             static_cast<size_t>(i) + 1)) {
-      hooks_[static_cast<size_t>(i)] = false;
-    }
-  }
-
-  ~InterceptorBatchMethodsImpl() override {}
-
-  bool QueryInterceptionHookPoint(
-      experimental::InterceptionHookPoints type) override {
-    return hooks_[static_cast<size_t>(type)];
-  }
-
-  void Proceed() override {
-    if (call_->client_rpc_info() != nullptr) {
-      return ProceedClient();
-    }
-    GPR_CODEGEN_ASSERT(call_->server_rpc_info() != nullptr);
-    ProceedServer();
-  }
-
-  void Hijack() override {
-    // Only the client can hijack when sending down initial metadata
-    GPR_CODEGEN_ASSERT(!reverse_ && ops_ != nullptr &&
-                       call_->client_rpc_info() != nullptr);
-    // It is illegal to call Hijack twice
-    GPR_CODEGEN_ASSERT(!ran_hijacking_interceptor_);
-    auto* rpc_info = call_->client_rpc_info();
-    rpc_info->hijacked_ = true;
-    rpc_info->hijacked_interceptor_ = current_interceptor_index_;
-    ClearHookPoints();
-    ops_->SetHijackingState();
-    ran_hijacking_interceptor_ = true;
-    rpc_info->RunInterceptor(this, current_interceptor_index_);
-  }
-
-  void AddInterceptionHookPoint(experimental::InterceptionHookPoints type) {
-    hooks_[static_cast<size_t>(type)] = true;
-  }
-
-  ByteBuffer* GetSerializedSendMessage() override {
-    GPR_CODEGEN_ASSERT(orig_send_message_ != nullptr);
-    if (*orig_send_message_ != nullptr) {
-      GPR_CODEGEN_ASSERT(serializer_(*orig_send_message_).ok());
-      *orig_send_message_ = nullptr;
-    }
-    return send_message_;
-  }
-
-  const void* GetSendMessage() override {
-    GPR_CODEGEN_ASSERT(orig_send_message_ != nullptr);
-    return *orig_send_message_;
-  }
-
-  void ModifySendMessage(const void* message) override {
-    GPR_CODEGEN_ASSERT(orig_send_message_ != nullptr);
-    *orig_send_message_ = message;
-  }
-
-  bool GetSendMessageStatus() override { return !*fail_send_message_; }
-
-  std::multimap<TString, TString>* GetSendInitialMetadata() override {
-    return send_initial_metadata_;
-  }
-
-  Status GetSendStatus() override {
-    return Status(static_cast<StatusCode>(*code_), *error_message_,
-                  *error_details_);
-  }
-
-  void ModifySendStatus(const Status& status) override {
-    *code_ = static_cast<grpc_status_code>(status.error_code());
-    *error_details_ = status.error_details();
-    *error_message_ = status.error_message();
-  }
-
-  std::multimap<TString, TString>* GetSendTrailingMetadata() override {
-    return send_trailing_metadata_;
-  }
-
-  void* GetRecvMessage() override { return recv_message_; }
-
-  std::multimap<grpc::string_ref, grpc::string_ref>* GetRecvInitialMetadata()
-      override {
-    return recv_initial_metadata_->map();
-  }
-
-  Status* GetRecvStatus() override { return recv_status_; }
-
-  void FailHijackedSendMessage() override {
-    GPR_CODEGEN_ASSERT(hooks_[static_cast<size_t>(
-        experimental::InterceptionHookPoints::PRE_SEND_MESSAGE)]);
-    *fail_send_message_ = true;
-  }
-
-  std::multimap<grpc::string_ref, grpc::string_ref>* GetRecvTrailingMetadata()
-      override {
-    return recv_trailing_metadata_->map();
-  }
-
-  void SetSendMessage(ByteBuffer* buf, const void** msg,
-                      bool* fail_send_message,
-                      std::function<Status(const void*)> serializer) {
-    send_message_ = buf;
-    orig_send_message_ = msg;
-    fail_send_message_ = fail_send_message;
-    serializer_ = serializer;
-  }
-
-  void SetSendInitialMetadata(
-      std::multimap<TString, TString>* metadata) {
-    send_initial_metadata_ = metadata;
-  }
-
-  void SetSendStatus(grpc_status_code* code, TString* error_details,
-                     TString* error_message) {
-    code_ = code;
-    error_details_ = error_details;
-    error_message_ = error_message;
-  }
-
-  void SetSendTrailingMetadata(
-      std::multimap<TString, TString>* metadata) {
-    send_trailing_metadata_ = metadata;
-  }
-
-  void SetRecvMessage(void* message, bool* hijacked_recv_message_failed) {
-    recv_message_ = message;
-    hijacked_recv_message_failed_ = hijacked_recv_message_failed;
-  }
-
-  void SetRecvInitialMetadata(MetadataMap* map) {
-    recv_initial_metadata_ = map;
-  }
-
-  void SetRecvStatus(Status* status) { recv_status_ = status; }
-
-  void SetRecvTrailingMetadata(MetadataMap* map) {
-    recv_trailing_metadata_ = map;
-  }
-
-  std::unique_ptr<ChannelInterface> GetInterceptedChannel() override {
-    auto* info = call_->client_rpc_info();
-    if (info == nullptr) {
-      return std::unique_ptr<ChannelInterface>(nullptr);
-    }
-    // The intercepted channel starts from the interceptor just after the
-    // current interceptor
-    return std::unique_ptr<ChannelInterface>(new InterceptedChannel(
-        info->channel(), current_interceptor_index_ + 1));
-  }
-
-  void FailHijackedRecvMessage() override {
-    GPR_CODEGEN_ASSERT(hooks_[static_cast<size_t>(
-        experimental::InterceptionHookPoints::PRE_RECV_MESSAGE)]);
-    *hijacked_recv_message_failed_ = true;
-  }
-
-  // Clears all state
-  void ClearState() {
-    reverse_ = false;
-    ran_hijacking_interceptor_ = false;
-    ClearHookPoints();
-  }
-
-  // Prepares for Post_recv operations
-  void SetReverse() {
-    reverse_ = true;
-    ran_hijacking_interceptor_ = false;
-    ClearHookPoints();
-  }
-
-  // This needs to be set before interceptors are run
-  void SetCall(Call* call) { call_ = call; }
-
-  // This needs to be set before interceptors are run using RunInterceptors().
-  // Alternatively, RunInterceptors(std::function<void(void)> f) can be used.
-  void SetCallOpSetInterface(CallOpSetInterface* ops) { ops_ = ops; }
-
-  // SetCall should have been called before this.
-  // Returns true if the interceptors list is empty
-  bool InterceptorsListEmpty() {
-    auto* client_rpc_info = call_->client_rpc_info();
-    if (client_rpc_info != nullptr) {
-      return client_rpc_info->interceptors_.empty();
-    }
-
-    auto* server_rpc_info = call_->server_rpc_info();
-    return server_rpc_info == nullptr || server_rpc_info->interceptors_.empty();
-  }
-
-  // This should be used only by subclasses of CallOpSetInterface. SetCall and
-  // SetCallOpSetInterface should have been called before this. After all the
-  // interceptors are done running, either ContinueFillOpsAfterInterception or
-  // ContinueFinalizeOpsAfterInterception will be called. Note that neither of
-  // them is invoked if there were no interceptors registered.
-  bool RunInterceptors() {
-    GPR_CODEGEN_ASSERT(ops_);
-    auto* client_rpc_info = call_->client_rpc_info();
-    if (client_rpc_info != nullptr) {
-      if (client_rpc_info->interceptors_.empty()) {
-        return true;
-      } else {
-        RunClientInterceptors();
-        return false;
-      }
-    }
-
-    auto* server_rpc_info = call_->server_rpc_info();
-    if (server_rpc_info == nullptr || server_rpc_info->interceptors_.empty()) {
-      return true;
-    }
-    RunServerInterceptors();
-    return false;
-  }
-
-  // Returns true if no interceptors are run. Returns false otherwise if there
-  // are interceptors registered. After the interceptors are done running \a f
-  // will be invoked. This is to be used only by BaseAsyncRequest and
-  // SyncRequest.
-  bool RunInterceptors(std::function<void(void)> f) {
-    // This is used only by the server for initial call request
-    GPR_CODEGEN_ASSERT(reverse_ == true);
-    GPR_CODEGEN_ASSERT(call_->client_rpc_info() == nullptr);
-    auto* server_rpc_info = call_->server_rpc_info();
-    if (server_rpc_info == nullptr || server_rpc_info->interceptors_.empty()) {
-      return true;
-    }
-    callback_ = std::move(f);
-    RunServerInterceptors();
-    return false;
-  }
-
- private:
-  void RunClientInterceptors() {
-    auto* rpc_info = call_->client_rpc_info();
-    if (!reverse_) {
-      current_interceptor_index_ = 0;
-    } else {
-      if (rpc_info->hijacked_) {
-        current_interceptor_index_ = rpc_info->hijacked_interceptor_;
-      } else {
-        current_interceptor_index_ = rpc_info->interceptors_.size() - 1;
-      }
-    }
-    rpc_info->RunInterceptor(this, current_interceptor_index_);
-  }
-
-  void RunServerInterceptors() {
-    auto* rpc_info = call_->server_rpc_info();
-    if (!reverse_) {
-      current_interceptor_index_ = 0;
-    } else {
-      current_interceptor_index_ = rpc_info->interceptors_.size() - 1;
-    }
-    rpc_info->RunInterceptor(this, current_interceptor_index_);
-  }
-
-  void ProceedClient() {
-    auto* rpc_info = call_->client_rpc_info();
-    if (rpc_info->hijacked_ && !reverse_ &&
-        current_interceptor_index_ == rpc_info->hijacked_interceptor_ &&
-        !ran_hijacking_interceptor_) {
-      // We now need to provide hijacked recv ops to this interceptor
-      ClearHookPoints();
-      ops_->SetHijackingState();
-      ran_hijacking_interceptor_ = true;
-      rpc_info->RunInterceptor(this, current_interceptor_index_);
-      return;
-    }
-    if (!reverse_) {
-      current_interceptor_index_++;
-      // We are going down the stack of interceptors
-      if (current_interceptor_index_ < rpc_info->interceptors_.size()) {
-        if (rpc_info->hijacked_ &&
-            current_interceptor_index_ > rpc_info->hijacked_interceptor_) {
-          // This is a hijacked RPC and we are done with hijacking
-          ops_->ContinueFillOpsAfterInterception();
-        } else {
-          rpc_info->RunInterceptor(this, current_interceptor_index_);
-        }
-      } else {
-        // we are done running all the interceptors without any hijacking
-        ops_->ContinueFillOpsAfterInterception();
-      }
-    } else {
-      // We are going up the stack of interceptors
-      if (current_interceptor_index_ > 0) {
-        // Continue running interceptors
-        current_interceptor_index_--;
-        rpc_info->RunInterceptor(this, current_interceptor_index_);
-      } else {
-        // we are done running all the interceptors without any hijacking
-        ops_->ContinueFinalizeResultAfterInterception();
-      }
-    }
-  }
-
-  void ProceedServer() {
-    auto* rpc_info = call_->server_rpc_info();
-    if (!reverse_) {
-      current_interceptor_index_++;
-      if (current_interceptor_index_ < rpc_info->interceptors_.size()) {
-        return rpc_info->RunInterceptor(this, current_interceptor_index_);
-      } else if (ops_) {
-        return ops_->ContinueFillOpsAfterInterception();
-      }
-    } else {
-      // We are going up the stack of interceptors
-      if (current_interceptor_index_ > 0) {
-        // Continue running interceptors
-        current_interceptor_index_--;
-        return rpc_info->RunInterceptor(this, current_interceptor_index_);
-      } else if (ops_) {
-        return ops_->ContinueFinalizeResultAfterInterception();
-      }
-    }
-    GPR_CODEGEN_ASSERT(callback_);
-    callback_();
-  }
-
-  void ClearHookPoints() {
-    for (auto i = static_cast<experimental::InterceptionHookPoints>(0);
-         i < experimental::InterceptionHookPoints::NUM_INTERCEPTION_HOOKS;
-         i = static_cast<experimental::InterceptionHookPoints>(
-             static_cast<size_t>(i) + 1)) {
-      hooks_[static_cast<size_t>(i)] = false;
-    }
-  }
-
-  std::array<bool,
-             static_cast<size_t>(
-                 experimental::InterceptionHookPoints::NUM_INTERCEPTION_HOOKS)>
-      hooks_;
-
-  size_t current_interceptor_index_ = 0;  // Current iterator
-  bool reverse_ = false;
-  bool ran_hijacking_interceptor_ = false;
-  Call* call_ = nullptr;  // The Call object is present along with CallOpSet
-                          // object/callback
-  CallOpSetInterface* ops_ = nullptr;
-  std::function<void(void)> callback_;
-
-  ByteBuffer* send_message_ = nullptr;
-  bool* fail_send_message_ = nullptr;
-  const void** orig_send_message_ = nullptr;
-  std::function<Status(const void*)> serializer_;
-
-  std::multimap<TString, TString>* send_initial_metadata_;
-
-  grpc_status_code* code_ = nullptr;
-  TString* error_details_ = nullptr;
-  TString* error_message_ = nullptr;
-
-  std::multimap<TString, TString>* send_trailing_metadata_ = nullptr;
-
-  void* recv_message_ = nullptr;
-  bool* hijacked_recv_message_failed_ = nullptr;
-
-  MetadataMap* recv_initial_metadata_ = nullptr;
-
-  Status* recv_status_ = nullptr;
-
-  MetadataMap* recv_trailing_metadata_ = nullptr;
-};
-
-// A special implementation of InterceptorBatchMethods to send a Cancel
-// notification down the interceptor stack
-class CancelInterceptorBatchMethods
-    : public experimental::InterceptorBatchMethods {
- public:
-  bool QueryInterceptionHookPoint(
-      experimental::InterceptionHookPoints type) override {
-    return type == experimental::InterceptionHookPoints::PRE_SEND_CANCEL;
-  }
-
-  void Proceed() override {
-    // This is a no-op. For actual continuation of the RPC simply needs to
-    // return from the Intercept method
-  }
-
-  void Hijack() override {
-    // Only the client can hijack when sending down initial metadata
-    GPR_CODEGEN_ASSERT(false &&
-                       "It is illegal to call Hijack on a method which has a "
-                       "Cancel notification");
-  }
-
-  ByteBuffer* GetSerializedSendMessage() override {
-    GPR_CODEGEN_ASSERT(false &&
-                       "It is illegal to call GetSendMessage on a method which "
-                       "has a Cancel notification");
-    return nullptr;
-  }
-
-  bool GetSendMessageStatus() override {
-    GPR_CODEGEN_ASSERT(
-        false &&
-        "It is illegal to call GetSendMessageStatus on a method which "
-        "has a Cancel notification");
-    return false;
-  }
-
-  const void* GetSendMessage() override {
-    GPR_CODEGEN_ASSERT(
-        false &&
-        "It is illegal to call GetOriginalSendMessage on a method which "
-        "has a Cancel notification");
-    return nullptr;
-  }
-
-  void ModifySendMessage(const void* /*message*/) override {
-    GPR_CODEGEN_ASSERT(
-        false &&
-        "It is illegal to call ModifySendMessage on a method which "
-        "has a Cancel notification");
-  }
-
-  std::multimap<TString, TString>* GetSendInitialMetadata() override {
-    GPR_CODEGEN_ASSERT(false &&
-                       "It is illegal to call GetSendInitialMetadata on a "
-                       "method which has a Cancel notification");
-    return nullptr;
-  }
-
-  Status GetSendStatus() override {
-    GPR_CODEGEN_ASSERT(false &&
-                       "It is illegal to call GetSendStatus on a method which "
-                       "has a Cancel notification");
-    return Status();
-  }
-
-  void ModifySendStatus(const Status& /*status*/) override {
-    GPR_CODEGEN_ASSERT(false &&
-                       "It is illegal to call ModifySendStatus on a method "
-                       "which has a Cancel notification");
-  }
-
-  std::multimap<TString, TString>* GetSendTrailingMetadata() override {
-    GPR_CODEGEN_ASSERT(false &&
-                       "It is illegal to call GetSendTrailingMetadata on a "
-                       "method which has a Cancel notification");
-    return nullptr;
-  }
-
-  void* GetRecvMessage() override {
-    GPR_CODEGEN_ASSERT(false &&
-                       "It is illegal to call GetRecvMessage on a method which "
-                       "has a Cancel notification");
-    return nullptr;
-  }
-
-  std::multimap<grpc::string_ref, grpc::string_ref>* GetRecvInitialMetadata()
-      override {
-    GPR_CODEGEN_ASSERT(false &&
-                       "It is illegal to call GetRecvInitialMetadata on a "
-                       "method which has a Cancel notification");
-    return nullptr;
-  }
-
-  Status* GetRecvStatus() override {
-    GPR_CODEGEN_ASSERT(false &&
-                       "It is illegal to call GetRecvStatus on a method which "
-                       "has a Cancel notification");
-    return nullptr;
-  }
-
-  std::multimap<grpc::string_ref, grpc::string_ref>* GetRecvTrailingMetadata()
-      override {
-    GPR_CODEGEN_ASSERT(false &&
-                       "It is illegal to call GetRecvTrailingMetadata on a "
-                       "method which has a Cancel notification");
-    return nullptr;
-  }
-
-  std::unique_ptr<ChannelInterface> GetInterceptedChannel() override {
-    GPR_CODEGEN_ASSERT(false &&
-                       "It is illegal to call GetInterceptedChannel on a "
-                       "method which has a Cancel notification");
-    return std::unique_ptr<ChannelInterface>(nullptr);
-  }
-
-  void FailHijackedRecvMessage() override {
-    GPR_CODEGEN_ASSERT(false &&
-                       "It is illegal to call FailHijackedRecvMessage on a "
-                       "method which has a Cancel notification");
-  }
-
-  void FailHijackedSendMessage() override {
-    GPR_CODEGEN_ASSERT(false &&
-                       "It is illegal to call FailHijackedSendMessage on a "
-                       "method which has a Cancel notification");
-  }
-};
-}  // namespace internal
-}  // namespace grpc
+/// TODO(chengyuc): Remove this file after solving compatibility.
+#include <grpcpp/impl/interceptor_common.h>
 
 #endif  // GRPCPP_IMPL_CODEGEN_INTERCEPTOR_COMMON_H
diff --git a/contrib/libs/grpc/include/grpcpp/impl/codegen/metadata_map.h b/contrib/libs/grpc/include/grpcpp/impl/codegen/metadata_map.h
index 430d6b6744..aad4d5ab78 100644
--- a/contrib/libs/grpc/include/grpcpp/impl/codegen/metadata_map.h
+++ b/contrib/libs/grpc/include/grpcpp/impl/codegen/metadata_map.h
@@ -1,107 +1,27 @@
-/*
- *
- * Copyright 2015 gRPC authors.
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
- */
+//
+//
+// Copyright 2015 gRPC authors.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+//
 
 #ifndef GRPCPP_IMPL_CODEGEN_METADATA_MAP_H
 #define GRPCPP_IMPL_CODEGEN_METADATA_MAP_H
 
 // IWYU pragma: private
 
-#include <map>
-
-#include <grpc/impl/codegen/log.h>
-#include <grpcpp/impl/codegen/slice.h>
-
-namespace grpc {
-
-namespace internal {
-
-const char kBinaryErrorDetailsKey[] = "grpc-status-details-bin";
-
-class MetadataMap {
- public:
-  MetadataMap() { Setup(); }
-
-  ~MetadataMap() { Destroy(); }
-
-  TString GetBinaryErrorDetails() {
-    // if filled_, extract from the multimap for O(log(n))
-    if (filled_) {
-      auto iter = map_.find(kBinaryErrorDetailsKey);
-      if (iter != map_.end()) {
-        return TString(iter->second.begin(), iter->second.length());
-      }
-    }
-    // if not yet filled, take the O(n) lookup to avoid allocating the
-    // multimap until it is requested.
-    // TODO(ncteisen): plumb this through core as a first class object, just
-    // like code and message.
-    else {
-      for (size_t i = 0; i < arr_.count; i++) {
-        if (strncmp(reinterpret_cast<const char*>(
-                        GRPC_SLICE_START_PTR(arr_.metadata[i].key)),
-                    kBinaryErrorDetailsKey,
-                    GRPC_SLICE_LENGTH(arr_.metadata[i].key)) == 0) {
-          return TString(reinterpret_cast<const char*>(
-                                 GRPC_SLICE_START_PTR(arr_.metadata[i].value)),
-                             GRPC_SLICE_LENGTH(arr_.metadata[i].value));
-        }
-      }
-    }
-    return TString();
-  }
-
-  std::multimap<grpc::string_ref, grpc::string_ref>* map() {
-    FillMap();
-    return &map_;
-  }
-  grpc_metadata_array* arr() { return &arr_; }
-
-  void Reset() {
-    filled_ = false;
-    map_.clear();
-    Destroy();
-    Setup();
-  }
-
- private:
-  bool filled_ = false;
-  grpc_metadata_array arr_;
-  std::multimap<grpc::string_ref, grpc::string_ref> map_;
-
-  void Destroy() {
-    g_core_codegen_interface->grpc_metadata_array_destroy(&arr_);
-  }
-
-  void Setup() { memset(&arr_, 0, sizeof(arr_)); }
-
-  void FillMap() {
-    if (filled_) return;
-    filled_ = true;
-    for (size_t i = 0; i < arr_.count; i++) {
-      // TODO(yangg) handle duplicates?
-      map_.insert(std::pair<grpc::string_ref, grpc::string_ref>(
-          StringRefFromSlice(&arr_.metadata[i].key),
-          StringRefFromSlice(&arr_.metadata[i].value)));
-    }
-  }
-};
-}  // namespace internal
-
-}  // namespace grpc
+/// TODO(chengyuc): Remove this file after solving compatibility.
+#include <grpcpp/impl/metadata_map.h>
 
 #endif  // GRPCPP_IMPL_CODEGEN_METADATA_MAP_H
diff --git a/contrib/libs/grpc/include/grpcpp/impl/codegen/method_handler.h b/contrib/libs/grpc/include/grpcpp/impl/codegen/method_handler.h
deleted file mode 100644
index 4f00728b57..0000000000
--- a/contrib/libs/grpc/include/grpcpp/impl/codegen/method_handler.h
+++ /dev/null
@@ -1,406 +0,0 @@
-/*
- *
- * Copyright 2015 gRPC authors.
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
- */
-
-#ifndef GRPCPP_IMPL_CODEGEN_METHOD_HANDLER_H
-#define GRPCPP_IMPL_CODEGEN_METHOD_HANDLER_H
-
-// IWYU pragma: private, include <grpcpp/support/method_handler.h>
-
-#include <grpcpp/impl/codegen/core_codegen_interface.h>
-#include <grpcpp/impl/codegen/rpc_service_method.h>
-#include <grpcpp/impl/codegen/sync_stream.h>
-#include <grpcpp/support/byte_buffer.h>
-
-namespace grpc {
-
-namespace internal {
-
-// Invoke the method handler, fill in the status, and
-// return whether or not we finished safely (without an exception).
-// Note that exception handling is 0-cost in most compiler/library
-// implementations (except when an exception is actually thrown),
-// so this process doesn't require additional overhead in the common case.
-// Additionally, we don't need to return if we caught an exception or not;
-// the handling is the same in either case.
-template <class Callable>
-::grpc::Status CatchingFunctionHandler(Callable&& handler) {
-#if GRPC_ALLOW_EXCEPTIONS
-  try {
-    return handler();
-  } catch (...) {
-    return grpc::Status(grpc::StatusCode::UNKNOWN,
-                        "Unexpected error in RPC handling");
-  }
-#else   // GRPC_ALLOW_EXCEPTIONS
-  return handler();
-#endif  // GRPC_ALLOW_EXCEPTIONS
-}
-
-/// A helper function with reduced templating to do the common work needed to
-/// actually send the server response. Uses non-const parameter for Status since
-/// this should only ever be called from the end of the RunHandler method.
-
-template <class ResponseType>
-void UnaryRunHandlerHelper(const MethodHandler::HandlerParameter& param,
-                           ResponseType* rsp, grpc::Status& status) {
-  GPR_CODEGEN_ASSERT(!param.server_context->sent_initial_metadata_);
-  grpc::internal::CallOpSet<grpc::internal::CallOpSendInitialMetadata,
-                            grpc::internal::CallOpSendMessage,
-                            grpc::internal::CallOpServerSendStatus>
-      ops;
-  ops.SendInitialMetadata(&param.server_context->initial_metadata_,
-                          param.server_context->initial_metadata_flags());
-  if (param.server_context->compression_level_set()) {
-    ops.set_compression_level(param.server_context->compression_level());
-  }
-  if (status.ok()) {
-    status = ops.SendMessagePtr(rsp);
-  }
-  ops.ServerSendStatus(&param.server_context->trailing_metadata_, status);
-  param.call->PerformOps(&ops);
-  param.call->cq()->Pluck(&ops);
-}
-
-/// A helper function with reduced templating to do deserializing.
-
-template <class RequestType>
-void* UnaryDeserializeHelper(grpc_byte_buffer* req, grpc::Status* status,
-                             RequestType* request) {
-  grpc::ByteBuffer buf;
-  buf.set_buffer(req);
-  *status = grpc::SerializationTraits<RequestType>::Deserialize(
-      &buf, static_cast<RequestType*>(request));
-  buf.Release();
-  if (status->ok()) {
-    return request;
-  }
-  request->~RequestType();
-  return nullptr;
-}
-
-/// A wrapper class of an application provided rpc method handler.
-template <class ServiceType, class RequestType, class ResponseType,
-          class BaseRequestType = RequestType,
-          class BaseResponseType = ResponseType>
-class RpcMethodHandler : public grpc::internal::MethodHandler {
- public:
-  RpcMethodHandler(
-      std::function<grpc::Status(ServiceType*, grpc::ServerContext*,
-                                 const RequestType*, ResponseType*)>
-          func,
-      ServiceType* service)
-      : func_(func), service_(service) {}
-
-  void RunHandler(const HandlerParameter& param) final {
-    ResponseType rsp;
-    grpc::Status status = param.status;
-    if (status.ok()) {
-      status = CatchingFunctionHandler([this, &param, &rsp] {
-        return func_(service_,
-                     static_cast<grpc::ServerContext*>(param.server_context),
-                     static_cast<RequestType*>(param.request), &rsp);
-      });
-      static_cast<RequestType*>(param.request)->~RequestType();
-    }
-    UnaryRunHandlerHelper(param, static_cast<BaseResponseType*>(&rsp), status);
-  }
-
-  void* Deserialize(grpc_call* call, grpc_byte_buffer* req,
-                    grpc::Status* status, void** /*handler_data*/) final {
-    auto* request = new (grpc::g_core_codegen_interface->grpc_call_arena_alloc(
-        call, sizeof(RequestType))) RequestType;
-    return UnaryDeserializeHelper(req, status,
-                                  static_cast<BaseRequestType*>(request));
-  }
-
- private:
-  /// Application provided rpc handler function.
-  std::function<grpc::Status(ServiceType*, grpc::ServerContext*,
-                             const RequestType*, ResponseType*)>
-      func_;
-  // The class the above handler function lives in.
-  ServiceType* service_;
-};
-
-/// A wrapper class of an application provided client streaming handler.
-template <class ServiceType, class RequestType, class ResponseType>
-class ClientStreamingHandler : public grpc::internal::MethodHandler {
- public:
-  ClientStreamingHandler(
-      std::function<grpc::Status(ServiceType*, grpc::ServerContext*,
-                                 ServerReader<RequestType>*, ResponseType*)>
-          func,
-      ServiceType* service)
-      : func_(func), service_(service) {}
-
-  void RunHandler(const HandlerParameter& param) final {
-    ServerReader<RequestType> reader(
-        param.call, static_cast<grpc::ServerContext*>(param.server_context));
-    ResponseType rsp;
-    grpc::Status status =
-        CatchingFunctionHandler([this, &param, &reader, &rsp] {
-          return func_(service_,
-                       static_cast<grpc::ServerContext*>(param.server_context),
-                       &reader, &rsp);
-        });
-
-    grpc::internal::CallOpSet<grpc::internal::CallOpSendInitialMetadata,
-                              grpc::internal::CallOpSendMessage,
-                              grpc::internal::CallOpServerSendStatus>
-        ops;
-    if (!param.server_context->sent_initial_metadata_) {
-      ops.SendInitialMetadata(&param.server_context->initial_metadata_,
-                              param.server_context->initial_metadata_flags());
-      if (param.server_context->compression_level_set()) {
-        ops.set_compression_level(param.server_context->compression_level());
-      }
-    }
-    if (status.ok()) {
-      status = ops.SendMessagePtr(&rsp);
-    }
-    ops.ServerSendStatus(&param.server_context->trailing_metadata_, status);
-    param.call->PerformOps(&ops);
-    param.call->cq()->Pluck(&ops);
-  }
-
- private:
-  std::function<grpc::Status(ServiceType*, grpc::ServerContext*,
-                             ServerReader<RequestType>*, ResponseType*)>
-      func_;
-  ServiceType* service_;
-};
-
-/// A wrapper class of an application provided server streaming handler.
-template <class ServiceType, class RequestType, class ResponseType>
-class ServerStreamingHandler : public grpc::internal::MethodHandler {
- public:
-  ServerStreamingHandler(std::function<grpc::Status(
-                             ServiceType*, grpc::ServerContext*,
-                             const RequestType*, ServerWriter<ResponseType>*)>
-                             func,
-                         ServiceType* service)
-      : func_(func), service_(service) {}
-
-  void RunHandler(const HandlerParameter& param) final {
-    grpc::Status status = param.status;
-    if (status.ok()) {
-      ServerWriter<ResponseType> writer(
-          param.call, static_cast<grpc::ServerContext*>(param.server_context));
-      status = CatchingFunctionHandler([this, &param, &writer] {
-        return func_(service_,
-                     static_cast<grpc::ServerContext*>(param.server_context),
-                     static_cast<RequestType*>(param.request), &writer);
-      });
-      static_cast<RequestType*>(param.request)->~RequestType();
-    }
-
-    grpc::internal::CallOpSet<grpc::internal::CallOpSendInitialMetadata,
-                              grpc::internal::CallOpServerSendStatus>
-        ops;
-    if (!param.server_context->sent_initial_metadata_) {
-      ops.SendInitialMetadata(&param.server_context->initial_metadata_,
-                              param.server_context->initial_metadata_flags());
-      if (param.server_context->compression_level_set()) {
-        ops.set_compression_level(param.server_context->compression_level());
-      }
-    }
-    ops.ServerSendStatus(&param.server_context->trailing_metadata_, status);
-    param.call->PerformOps(&ops);
-    if (param.server_context->has_pending_ops_) {
-      param.call->cq()->Pluck(&param.server_context->pending_ops_);
-    }
-    param.call->cq()->Pluck(&ops);
-  }
-
-  void* Deserialize(grpc_call* call, grpc_byte_buffer* req,
-                    grpc::Status* status, void** /*handler_data*/) final {
-    grpc::ByteBuffer buf;
-    buf.set_buffer(req);
-    auto* request = new (grpc::g_core_codegen_interface->grpc_call_arena_alloc(
-        call, sizeof(RequestType))) RequestType();
-    *status =
-        grpc::SerializationTraits<RequestType>::Deserialize(&buf, request);
-    buf.Release();
-    if (status->ok()) {
-      return request;
-    }
-    request->~RequestType();
-    return nullptr;
-  }
-
- private:
-  std::function<grpc::Status(ServiceType*, grpc::ServerContext*,
-                             const RequestType*, ServerWriter<ResponseType>*)>
-      func_;
-  ServiceType* service_;
-};
-
-/// A wrapper class of an application provided bidi-streaming handler.
-/// This also applies to server-streamed implementation of a unary method
-/// with the additional requirement that such methods must have done a
-/// write for status to be ok
-/// Since this is used by more than 1 class, the service is not passed in.
-/// Instead, it is expected to be an implicitly-captured argument of func
-/// (through bind or something along those lines)
-template <class Streamer, bool WriteNeeded>
-class TemplatedBidiStreamingHandler : public grpc::internal::MethodHandler {
- public:
-  explicit TemplatedBidiStreamingHandler(
-      std::function<grpc::Status(grpc::ServerContext*, Streamer*)> func)
-      : func_(func), write_needed_(WriteNeeded) {}
-
-  void RunHandler(const HandlerParameter& param) final {
-    Streamer stream(param.call,
-                    static_cast<grpc::ServerContext*>(param.server_context));
-    grpc::Status status = CatchingFunctionHandler([this, &param, &stream] {
-      return func_(static_cast<grpc::ServerContext*>(param.server_context),
-                   &stream);
-    });
-
-    grpc::internal::CallOpSet<grpc::internal::CallOpSendInitialMetadata,
-                              grpc::internal::CallOpServerSendStatus>
-        ops;
-    if (!param.server_context->sent_initial_metadata_) {
-      ops.SendInitialMetadata(&param.server_context->initial_metadata_,
-                              param.server_context->initial_metadata_flags());
-      if (param.server_context->compression_level_set()) {
-        ops.set_compression_level(param.server_context->compression_level());
-      }
-      if (write_needed_ && status.ok()) {
-        // If we needed a write but never did one, we need to mark the
-        // status as a fail
-        status = grpc::Status(grpc::StatusCode::INTERNAL,
-                              "Service did not provide response message");
-      }
-    }
-    ops.ServerSendStatus(&param.server_context->trailing_metadata_, status);
-    param.call->PerformOps(&ops);
-    if (param.server_context->has_pending_ops_) {
-      param.call->cq()->Pluck(&param.server_context->pending_ops_);
-    }
-    param.call->cq()->Pluck(&ops);
-  }
-
- private:
-  std::function<grpc::Status(grpc::ServerContext*, Streamer*)> func_;
-  const bool write_needed_;
-};
-
-template <class ServiceType, class RequestType, class ResponseType>
-class BidiStreamingHandler
-    : public TemplatedBidiStreamingHandler<
-          ServerReaderWriter<ResponseType, RequestType>, false> {
- public:
-  BidiStreamingHandler(std::function<grpc::Status(
-                           ServiceType*, grpc::ServerContext*,
-                           ServerReaderWriter<ResponseType, RequestType>*)>
-                           func,
-                       ServiceType* service)
-      // TODO(vjpai): When gRPC supports C++14, move-capture func in the below
-      : TemplatedBidiStreamingHandler<
-            ServerReaderWriter<ResponseType, RequestType>, false>(
-            [func, service](
-                grpc::ServerContext* ctx,
-                ServerReaderWriter<ResponseType, RequestType>* streamer) {
-              return func(service, ctx, streamer);
-            }) {}
-};
-
-template <class RequestType, class ResponseType>
-class StreamedUnaryHandler
-    : public TemplatedBidiStreamingHandler<
-          ServerUnaryStreamer<RequestType, ResponseType>, true> {
- public:
-  explicit StreamedUnaryHandler(
-      std::function<
-          grpc::Status(grpc::ServerContext*,
-                       ServerUnaryStreamer<RequestType, ResponseType>*)>
-          func)
-      : TemplatedBidiStreamingHandler<
-            ServerUnaryStreamer<RequestType, ResponseType>, true>(
-            std::move(func)) {}
-};
-
-template <class RequestType, class ResponseType>
-class SplitServerStreamingHandler
-    : public TemplatedBidiStreamingHandler<
-          ServerSplitStreamer<RequestType, ResponseType>, false> {
- public:
-  explicit SplitServerStreamingHandler(
-      std::function<
-          grpc::Status(grpc::ServerContext*,
-                       ServerSplitStreamer<RequestType, ResponseType>*)>
-          func)
-      : TemplatedBidiStreamingHandler<
-            ServerSplitStreamer<RequestType, ResponseType>, false>(
-            std::move(func)) {}
-};
-
-/// General method handler class for errors that prevent real method use
-/// e.g., handle unknown method by returning UNIMPLEMENTED error.
-template <grpc::StatusCode code>
-class ErrorMethodHandler : public grpc::internal::MethodHandler {
- public:
-  explicit ErrorMethodHandler(const TString& message) : message_(message) {}
-
-  template <class T>
-  static void FillOps(grpc::ServerContextBase* context,
-                      const TString& message, T* ops) {
-    grpc::Status status(code, message);
-    if (!context->sent_initial_metadata_) {
-      ops->SendInitialMetadata(&context->initial_metadata_,
-                               context->initial_metadata_flags());
-      if (context->compression_level_set()) {
-        ops->set_compression_level(context->compression_level());
-      }
-      context->sent_initial_metadata_ = true;
-    }
-    ops->ServerSendStatus(&context->trailing_metadata_, status);
-  }
-
-  void RunHandler(const HandlerParameter& param) final {
-    grpc::internal::CallOpSet<grpc::internal::CallOpSendInitialMetadata,
-                              grpc::internal::CallOpServerSendStatus>
-        ops;
-    FillOps(param.server_context, message_, &ops);
-    param.call->PerformOps(&ops);
-    param.call->cq()->Pluck(&ops);
-  }
-
-  void* Deserialize(grpc_call* /*call*/, grpc_byte_buffer* req,
-                    grpc::Status* /*status*/, void** /*handler_data*/) final {
-    // We have to destroy any request payload
-    if (req != nullptr) {
-      grpc::g_core_codegen_interface->grpc_byte_buffer_destroy(req);
-    }
-    return nullptr;
-  }
-
- private:
-  const TString message_;
-};
-
-typedef ErrorMethodHandler<grpc::StatusCode::UNIMPLEMENTED>
-    UnknownMethodHandler;
-typedef ErrorMethodHandler<grpc::StatusCode::RESOURCE_EXHAUSTED>
-    ResourceExhaustedHandler;
-
-}  // namespace internal
-}  // namespace grpc
-
-#endif  // GRPCPP_IMPL_CODEGEN_METHOD_HANDLER_H
diff --git a/contrib/libs/grpc/include/grpcpp/impl/codegen/proto_utils.h b/contrib/libs/grpc/include/grpcpp/impl/codegen/proto_utils.h
index 9f9eb77b53..e5c57a4025 100644
--- a/contrib/libs/grpc/include/grpcpp/impl/codegen/proto_utils.h
+++ b/contrib/libs/grpc/include/grpcpp/impl/codegen/proto_utils.h
@@ -1,121 +1,27 @@
-/*
- *
- * Copyright 2015 gRPC authors.
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
- */
+//
+//
+// Copyright 2015 gRPC authors.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+//
 
 #ifndef GRPCPP_IMPL_CODEGEN_PROTO_UTILS_H
 #define GRPCPP_IMPL_CODEGEN_PROTO_UTILS_H
 
 // IWYU pragma: private
 
-#include <type_traits>
-
-#include <grpc/impl/codegen/byte_buffer_reader.h>
-#include <grpc/impl/codegen/grpc_types.h>
-#include <grpc/impl/codegen/slice.h>
-#include <grpcpp/impl/codegen/config_protobuf.h>
-#include <grpcpp/impl/codegen/core_codegen_interface.h>
-#include <grpcpp/impl/codegen/proto_buffer_reader.h>
-#include <grpcpp/impl/codegen/proto_buffer_writer.h>
-#include <grpcpp/impl/codegen/serialization_traits.h>
-#include <grpcpp/impl/codegen/slice.h>
-#include <grpcpp/impl/codegen/status.h>
-#include <grpcpp/support/byte_buffer.h>
-
-/// This header provides serialization and deserialization between gRPC
-/// messages serialized using protobuf and the C++ objects they represent.
-
-namespace grpc {
-
-extern CoreCodegenInterface* g_core_codegen_interface;
-
-// ProtoBufferWriter must be a subclass of ::protobuf::io::ZeroCopyOutputStream.
-template <class ProtoBufferWriter, class T>
-Status GenericSerialize(const grpc::protobuf::MessageLite& msg, ByteBuffer* bb,
-                        bool* own_buffer) {
-  static_assert(std::is_base_of<protobuf::io::ZeroCopyOutputStream,
-                                ProtoBufferWriter>::value,
-                "ProtoBufferWriter must be a subclass of "
-                "::protobuf::io::ZeroCopyOutputStream");
-  *own_buffer = true;
-  int byte_size = static_cast<int>(msg.ByteSizeLong());
-  if (static_cast<size_t>(byte_size) <= GRPC_SLICE_INLINED_SIZE) {
-    Slice slice(byte_size);
-    // We serialize directly into the allocated slices memory
-    GPR_CODEGEN_ASSERT(slice.end() == msg.SerializeWithCachedSizesToArray(
-                                          const_cast<uint8_t*>(slice.begin())));
-    ByteBuffer tmp(&slice, 1);
-    bb->Swap(&tmp);
-
-    return g_core_codegen_interface->ok();
-  }
-  ProtoBufferWriter writer(bb, kProtoBufferWriterMaxBufferLength, byte_size);
-  return msg.SerializeToZeroCopyStream(&writer)
-             ? g_core_codegen_interface->ok()
-             : Status(StatusCode::INTERNAL, "Failed to serialize message");
-}
-
-// BufferReader must be a subclass of ::protobuf::io::ZeroCopyInputStream.
-template <class ProtoBufferReader, class T>
-Status GenericDeserialize(ByteBuffer* buffer,
-                          grpc::protobuf::MessageLite* msg) {
-  static_assert(std::is_base_of<protobuf::io::ZeroCopyInputStream,
-                                ProtoBufferReader>::value,
-                "ProtoBufferReader must be a subclass of "
-                "::protobuf::io::ZeroCopyInputStream");
-  if (buffer == nullptr) {
-    return Status(StatusCode::INTERNAL, "No payload");
-  }
-  Status result = g_core_codegen_interface->ok();
-  {
-    ProtoBufferReader reader(buffer);
-    if (!reader.status().ok()) {
-      return reader.status();
-    }
-    if (!msg->ParseFromZeroCopyStream(&reader)) {
-      result = Status(StatusCode::INTERNAL, msg->InitializationErrorString());
-    }
-  }
-  buffer->Clear();
-  return result;
-}
-
-// this is needed so the following class does not conflict with protobuf
-// serializers that utilize internal-only tools.
-#ifdef GRPC_OPEN_SOURCE_PROTO
-// This class provides a protobuf serializer. It translates between protobuf
-// objects and grpc_byte_buffers. More information about SerializationTraits can
-// be found in include/grpcpp/impl/codegen/serialization_traits.h.
-template <class T>
-class SerializationTraits<
-    T, typename std::enable_if<
-           std::is_base_of<grpc::protobuf::MessageLite, T>::value>::type> {
- public:
-  static Status Serialize(const grpc::protobuf::MessageLite& msg,
-                          ByteBuffer* bb, bool* own_buffer) {
-    return GenericSerialize<ProtoBufferWriter, T>(msg, bb, own_buffer);
-  }
-
-  static Status Deserialize(ByteBuffer* buffer,
-                            grpc::protobuf::MessageLite* msg) {
-    return GenericDeserialize<ProtoBufferReader, T>(buffer, msg);
-  }
-};
-#endif
-
-}  // namespace grpc
+/// TODO(chengyuc): Remove this file after solving compatibility.
+#include <grpcpp/impl/proto_utils.h>
 
 #endif  // GRPCPP_IMPL_CODEGEN_PROTO_UTILS_H
diff --git a/contrib/libs/grpc/include/grpcpp/impl/codegen/rpc_method.h b/contrib/libs/grpc/include/grpcpp/impl/codegen/rpc_method.h
deleted file mode 100644
index 83dedda42c..0000000000
--- a/contrib/libs/grpc/include/grpcpp/impl/codegen/rpc_method.h
+++ /dev/null
@@ -1,82 +0,0 @@
-/*
- *
- * Copyright 2015 gRPC authors.
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
- */
-
-#ifndef GRPCPP_IMPL_CODEGEN_RPC_METHOD_H
-#define GRPCPP_IMPL_CODEGEN_RPC_METHOD_H
-
-// IWYU pragma: private, include <grpcpp/impl/rpc_method.h>
-
-#include <memory>
-
-#include <grpcpp/impl/codegen/channel_interface.h>
-
-namespace grpc {
-namespace internal {
-/// Descriptor of an RPC method
-class RpcMethod {
- public:
-  enum RpcType {
-    NORMAL_RPC = 0,
-    CLIENT_STREAMING,  // request streaming
-    SERVER_STREAMING,  // response streaming
-    BIDI_STREAMING
-  };
-
-  RpcMethod(const char* name, RpcType type)
-      : name_(name),
-        suffix_for_stats_(nullptr),
-        method_type_(type),
-        channel_tag_(nullptr) {}
-
-  RpcMethod(const char* name, const char* suffix_for_stats, RpcType type)
-      : name_(name),
-        suffix_for_stats_(suffix_for_stats),
-        method_type_(type),
-        channel_tag_(nullptr) {}
-
-  RpcMethod(const char* name, RpcType type,
-            const std::shared_ptr<ChannelInterface>& channel)
-      : name_(name),
-        suffix_for_stats_(nullptr),
-        method_type_(type),
-        channel_tag_(channel->RegisterMethod(name)) {}
-
-  RpcMethod(const char* name, const char* suffix_for_stats, RpcType type,
-            const std::shared_ptr<ChannelInterface>& channel)
-      : name_(name),
-        suffix_for_stats_(suffix_for_stats),
-        method_type_(type),
-        channel_tag_(channel->RegisterMethod(name)) {}
-
-  const char* name() const { return name_; }
-  const char* suffix_for_stats() const { return suffix_for_stats_; }
-  RpcType method_type() const { return method_type_; }
-  void SetMethodType(RpcType type) { method_type_ = type; }
-  void* channel_tag() const { return channel_tag_; }
-
- private:
-  const char* const name_;
-  const char* const suffix_for_stats_;
-  RpcType method_type_;
-  void* const channel_tag_;
-};
-
-}  // namespace internal
-}  // namespace grpc
-
-#endif  // GRPCPP_IMPL_CODEGEN_RPC_METHOD_H
diff --git a/contrib/libs/grpc/include/grpcpp/impl/codegen/rpc_service_method.h b/contrib/libs/grpc/include/grpcpp/impl/codegen/rpc_service_method.h
index 2aa7774ab5..d6f6c5da94 100644
--- a/contrib/libs/grpc/include/grpcpp/impl/codegen/rpc_service_method.h
+++ b/contrib/libs/grpc/include/grpcpp/impl/codegen/rpc_service_method.h
@@ -1,155 +1,27 @@
-/*
- *
- * Copyright 2016 gRPC authors.
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
- */
+//
+//
+// Copyright 2016 gRPC authors.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+//
 
 #ifndef GRPCPP_IMPL_CODEGEN_RPC_SERVICE_METHOD_H
 #define GRPCPP_IMPL_CODEGEN_RPC_SERVICE_METHOD_H
 
-// IWYU pragma: private, include <grpcpp/impl/rpc_service_method.h>
+// IWYU pragma: private
 
-#include <climits>
-#include <functional>
-#include <map>
-#include <memory>
-#include <vector>
-
-#include <grpc/impl/codegen/log.h>
-#include <grpcpp/impl/codegen/config.h>
-#include <grpcpp/impl/codegen/rpc_method.h>
-#include <grpcpp/impl/codegen/status.h>
-#include <grpcpp/support/byte_buffer.h>
-
-namespace grpc {
-class ServerContextBase;
-namespace internal {
-/// Base class for running an RPC handler.
-class MethodHandler {
- public:
-  virtual ~MethodHandler() {}
-  struct HandlerParameter {
-    /// Constructor for HandlerParameter
-    ///
-    /// \param c : the gRPC Call structure for this server call
-    /// \param context : the ServerContext structure for this server call
-    /// \param req : the request payload, if appropriate for this RPC
-    /// \param req_status : the request status after any interceptors have run
-    /// \param handler_data: internal data for the handler.
-    /// \param requester : used only by the callback API. It is a function
-    ///        called by the RPC Controller to request another RPC (and also
-    ///        to set up the state required to make that request possible)
-    HandlerParameter(Call* c, grpc::ServerContextBase* context, void* req,
-                     Status req_status, void* handler_data,
-                     std::function<void()> requester)
-        : call(c),
-          server_context(context),
-          request(req),
-          status(req_status),
-          internal_data(handler_data),
-          call_requester(std::move(requester)) {}
-    ~HandlerParameter() {}
-    Call* const call;
-    grpc::ServerContextBase* const server_context;
-    void* const request;
-    const Status status;
-    void* const internal_data;
-    const std::function<void()> call_requester;
-  };
-  virtual void RunHandler(const HandlerParameter& param) = 0;
-
-  /* Returns a pointer to the deserialized request. \a status reflects the
-     result of deserialization. This pointer and the status should be filled in
-     a HandlerParameter and passed to RunHandler. It is illegal to access the
-     pointer after calling RunHandler. Ownership of the deserialized request is
-     retained by the handler. Returns nullptr if deserialization failed. */
-  virtual void* Deserialize(grpc_call* /*call*/, grpc_byte_buffer* req,
-                            Status* /*status*/, void** /*handler_data*/) {
-    GPR_CODEGEN_ASSERT(req == nullptr);
-    return nullptr;
-  }
-};
-
-/// Server side rpc method class
-class RpcServiceMethod : public RpcMethod {
- public:
-  /// Takes ownership of the handler
-  RpcServiceMethod(const char* name, RpcMethod::RpcType type,
-                   MethodHandler* handler)
-      : RpcMethod(name, type),
-        server_tag_(nullptr),
-        api_type_(ApiType::SYNC),
-        handler_(handler) {}
-
-  enum class ApiType {
-    SYNC,
-    ASYNC,
-    RAW,
-    CALL_BACK,  // not CALLBACK because that is reserved in Windows
-    RAW_CALL_BACK,
-  };
-
-  void set_server_tag(void* tag) { server_tag_ = tag; }
-  void* server_tag() const { return server_tag_; }
-  /// if MethodHandler is nullptr, then this is an async method
-  MethodHandler* handler() const { return handler_.get(); }
-  ApiType api_type() const { return api_type_; }
-  void SetHandler(MethodHandler* handler) { handler_.reset(handler); }
-  void SetServerApiType(RpcServiceMethod::ApiType type) {
-    if ((api_type_ == ApiType::SYNC) &&
-        (type == ApiType::ASYNC || type == ApiType::RAW)) {
-      // this marks this method as async
-      handler_.reset();
-    } else if (api_type_ != ApiType::SYNC) {
-      // this is not an error condition, as it allows users to declare a server
-      // like WithRawMethod_foo<AsyncService>. However since it
-      // overwrites behavior, it should be logged.
-      gpr_log(
-          GPR_INFO,
-          "You are marking method %s as '%s', even though it was "
-          "previously marked '%s'. This behavior will overwrite the original "
-          "behavior. If you expected this then ignore this message.",
-          name(), TypeToString(api_type_), TypeToString(type));
-    }
-    api_type_ = type;
-  }
-
- private:
-  void* server_tag_;
-  ApiType api_type_;
-  std::unique_ptr<MethodHandler> handler_;
-
-  const char* TypeToString(RpcServiceMethod::ApiType type) {
-    switch (type) {
-      case ApiType::SYNC:
-        return "sync";
-      case ApiType::ASYNC:
-        return "async";
-      case ApiType::RAW:
-        return "raw";
-      case ApiType::CALL_BACK:
-        return "callback";
-      case ApiType::RAW_CALL_BACK:
-        return "raw_callback";
-      default:
-        GPR_UNREACHABLE_CODE(return "unknown");
-    }
-  }
-};
-}  // namespace internal
-
-}  // namespace grpc
+/// TODO(chengyuc): Remove this file after solving compatibility.
+#include <grpcpp/impl/rpc_service_method.h>
 
 #endif  // GRPCPP_IMPL_CODEGEN_RPC_SERVICE_METHOD_H
diff --git a/contrib/libs/grpc/include/grpcpp/impl/codegen/security/auth_context.h b/contrib/libs/grpc/include/grpcpp/impl/codegen/security/auth_context.h
deleted file mode 100644
index 8343832c27..0000000000
--- a/contrib/libs/grpc/include/grpcpp/impl/codegen/security/auth_context.h
+++ /dev/null
@@ -1,101 +0,0 @@
-/*
- *
- * Copyright 2015 gRPC authors.
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
- */
-
-#ifndef GRPCPP_IMPL_CODEGEN_SECURITY_AUTH_CONTEXT_H
-#define GRPCPP_IMPL_CODEGEN_SECURITY_AUTH_CONTEXT_H
-
-// IWYU pragma: private, include <grpcpp/security/auth_context.h>
-
-#include <iterator>
-#include <vector>
-
-#include <grpcpp/impl/codegen/config.h>
-#include <grpcpp/impl/codegen/string_ref.h>
-
-struct grpc_auth_context;
-struct grpc_auth_property;
-struct grpc_auth_property_iterator;
-
-namespace grpc {
-class SecureAuthContext;
-
-typedef std::pair<string_ref, string_ref> AuthProperty;
-
-class AuthPropertyIterator {
- public:
-  using iterator_category = std::forward_iterator_tag;
-  using value_type = const AuthProperty;
-  using pointer = void;
-  using reference = void;
-  using difference_type = std::ptrdiff_t;
-
-  ~AuthPropertyIterator();
-  AuthPropertyIterator& operator++();
-  AuthPropertyIterator operator++(int);
-  bool operator==(const AuthPropertyIterator& rhs) const;
-  bool operator!=(const AuthPropertyIterator& rhs) const;
-  AuthProperty operator*();
-
- protected:
-  AuthPropertyIterator();
-  AuthPropertyIterator(const grpc_auth_property* property,
-                       const grpc_auth_property_iterator* iter);
-
- private:
-  friend class SecureAuthContext;
-  const grpc_auth_property* property_;
-  // The following items form a grpc_auth_property_iterator.
-  const grpc_auth_context* ctx_;
-  size_t index_;
-  const char* name_;
-};
-
-/// Class encapsulating the Authentication Information.
-///
-/// It includes the secure identity of the peer, the type of secure transport
-/// used as well as any other properties required by the authorization layer.
-class AuthContext {
- public:
-  virtual ~AuthContext() {}
-
-  /// Returns true if the peer is authenticated.
-  virtual bool IsPeerAuthenticated() const = 0;
-
-  /// A peer identity.
-  ///
-  /// It is, in general, comprised of one or more properties (in which case they
-  /// have the same name).
-  virtual std::vector<grpc::string_ref> GetPeerIdentity() const = 0;
-  virtual TString GetPeerIdentityPropertyName() const = 0;
-
-  /// Returns all the property values with the given name.
-  virtual std::vector<grpc::string_ref> FindPropertyValues(
-      const TString& name) const = 0;
-
-  /// Iteration over all the properties.
-  virtual AuthPropertyIterator begin() const = 0;
-  virtual AuthPropertyIterator end() const = 0;
-
-  /// Mutation functions: should only be used by an AuthMetadataProcessor.
-  virtual void AddProperty(const TString& key, const string_ref& value) = 0;
-  virtual bool SetPeerIdentityPropertyName(const TString& name) = 0;
-};
-
-}  // namespace grpc
-
-#endif  // GRPCPP_IMPL_CODEGEN_SECURITY_AUTH_CONTEXT_H
diff --git a/contrib/libs/grpc/include/grpcpp/impl/codegen/serialization_traits.h b/contrib/libs/grpc/include/grpcpp/impl/codegen/serialization_traits.h
deleted file mode 100644
index 3148dffc80..0000000000
--- a/contrib/libs/grpc/include/grpcpp/impl/codegen/serialization_traits.h
+++ /dev/null
@@ -1,64 +0,0 @@
-/*
- *
- * Copyright 2015 gRPC authors.
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
- */
-
-#ifndef GRPCPP_IMPL_CODEGEN_SERIALIZATION_TRAITS_H
-#define GRPCPP_IMPL_CODEGEN_SERIALIZATION_TRAITS_H
-
-// IWYU pragma: private, include <grpcpp/impl/serialization_traits.h>
-
-namespace grpc {
-
-/// Defines how to serialize and deserialize some type.
-///
-/// Used for hooking different message serialization API's into GRPC.
-/// Each SerializationTraits<Message> implementation must provide the
-/// following functions:
-/// 1.  static Status Serialize(const Message& msg,
-///                             ByteBuffer* buffer,
-///                             bool* own_buffer);
-///     OR
-///     static Status Serialize(const Message& msg,
-///                             grpc_byte_buffer** buffer,
-///                             bool* own_buffer);
-///     The former is preferred; the latter is deprecated
-///
-/// 2.  static Status Deserialize(ByteBuffer* buffer,
-///                               Message* msg);
-///     OR
-///     static Status Deserialize(grpc_byte_buffer* buffer,
-///                               Message* msg);
-///     The former is preferred; the latter is deprecated
-///
-/// Serialize is required to convert message to a ByteBuffer, and
-/// return that byte buffer through *buffer. *own_buffer should
-/// be set to true if the caller owns said byte buffer, or false if
-/// ownership is retained elsewhere.
-///
-/// Deserialize is required to convert buffer into the message stored at
-/// msg. max_receive_message_size is passed in as a bound on the maximum
-/// number of message bytes Deserialize should accept.
-///
-/// Both functions return a Status, allowing them to explain what went
-/// wrong if required.
-template <class Message,
-          class UnusedButHereForPartialTemplateSpecialization = void>
-class SerializationTraits;
-
-}  // namespace grpc
-
-#endif  // GRPCPP_IMPL_CODEGEN_SERIALIZATION_TRAITS_H
diff --git a/contrib/libs/grpc/include/grpcpp/impl/codegen/server_callback.h b/contrib/libs/grpc/include/grpcpp/impl/codegen/server_callback.h
deleted file mode 100644
index 962a27d4cc..0000000000
--- a/contrib/libs/grpc/include/grpcpp/impl/codegen/server_callback.h
+++ /dev/null
@@ -1,799 +0,0 @@
-/*
- *
- * Copyright 2019 gRPC authors.
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-#ifndef GRPCPP_IMPL_CODEGEN_SERVER_CALLBACK_H
-#define GRPCPP_IMPL_CODEGEN_SERVER_CALLBACK_H
-
-// IWYU pragma: private, include <grpcpp/support/server_callback.h>
-
-#include <atomic>
-#include <functional>
-#include <type_traits>
-
-#include <grpcpp/impl/codegen/call.h>
-#include <grpcpp/impl/codegen/call_op_set.h>
-#include <grpcpp/impl/codegen/callback_common.h>
-#include <grpcpp/impl/codegen/config.h>
-#include <grpcpp/impl/codegen/core_codegen_interface.h>
-#include <grpcpp/impl/codegen/message_allocator.h>
-#include <grpcpp/impl/codegen/status.h>
-#include <grpcpp/impl/codegen/sync.h>
-
-namespace grpc {
-
-// Declare base class of all reactors as internal
-namespace internal {
-
-// Forward declarations
-template <class Request, class Response>
-class CallbackUnaryHandler;
-template <class Request, class Response>
-class CallbackClientStreamingHandler;
-template <class Request, class Response>
-class CallbackServerStreamingHandler;
-template <class Request, class Response>
-class CallbackBidiHandler;
-
-class ServerReactor {
- public:
-  virtual ~ServerReactor() = default;
-  virtual void OnDone() = 0;
-  virtual void OnCancel() = 0;
-
-  // The following is not API. It is for internal use only and specifies whether
-  // all reactions of this Reactor can be run without an extra executor
-  // scheduling. This should only be used for internally-defined reactors with
-  // trivial reactions.
-  virtual bool InternalInlineable() { return false; }
-
- private:
-  template <class Request, class Response>
-  friend class CallbackUnaryHandler;
-  template <class Request, class Response>
-  friend class CallbackClientStreamingHandler;
-  template <class Request, class Response>
-  friend class CallbackServerStreamingHandler;
-  template <class Request, class Response>
-  friend class CallbackBidiHandler;
-};
-
-/// The base class of ServerCallbackUnary etc.
-class ServerCallbackCall {
- public:
-  virtual ~ServerCallbackCall() {}
-
-  // This object is responsible for tracking when it is safe to call OnDone and
-  // OnCancel. OnDone should not be called until the method handler is complete,
-  // Finish has been called, the ServerContext CompletionOp (which tracks
-  // cancellation or successful completion) has completed, and all outstanding
-  // Read/Write actions have seen their reactions. OnCancel should not be called
-  // until after the method handler is done and the RPC has completed with a
-  // cancellation. This is tracked by counting how many of these conditions have
-  // been met and calling OnCancel when none remain unmet.
-
-  // Public versions of MaybeDone: one where we don't know the reactor in
-  // advance (used for the ServerContext CompletionOp), and one for where we
-  // know the inlineability of the OnDone reaction. You should set the inline
-  // flag to true if either the Reactor is InternalInlineable() or if this
-  // callback is already being forced to run dispatched to an executor
-  // (typically because it contains additional work than just the MaybeDone).
-
-  void MaybeDone() {
-    if (GPR_UNLIKELY(Unref() == 1)) {
-      ScheduleOnDone(reactor()->InternalInlineable());
-    }
-  }
-
-  void MaybeDone(bool inline_ondone) {
-    if (GPR_UNLIKELY(Unref() == 1)) {
-      ScheduleOnDone(inline_ondone);
-    }
-  }
-
-  // Fast version called with known reactor passed in, used from derived
-  // classes, typically in non-cancel case
-  void MaybeCallOnCancel(ServerReactor* reactor) {
-    if (GPR_UNLIKELY(UnblockCancellation())) {
-      CallOnCancel(reactor);
-    }
-  }
-
-  // Slower version called from object that doesn't know the reactor a priori
-  // (such as the ServerContext CompletionOp which is formed before the
-  // reactor). This is used in cancel cases only, so it's ok to be slower and
-  // invoke a virtual function.
-  void MaybeCallOnCancel() {
-    if (GPR_UNLIKELY(UnblockCancellation())) {
-      CallOnCancel(reactor());
-    }
-  }
-
- protected:
-  /// Increases the reference count
-  void Ref() { callbacks_outstanding_.fetch_add(1, std::memory_order_relaxed); }
-
- private:
-  virtual ServerReactor* reactor() = 0;
-
-  // CallOnDone performs the work required at completion of the RPC: invoking
-  // the OnDone function and doing all necessary cleanup. This function is only
-  // ever invoked on a fully-Unref'fed ServerCallbackCall.
-  virtual void CallOnDone() = 0;
-
-  // If the OnDone reaction is inlineable, execute it inline. Otherwise send it
-  // to an executor.
-  void ScheduleOnDone(bool inline_ondone);
-
-  // If the OnCancel reaction is inlineable, execute it inline. Otherwise send
-  // it to an executor.
-  void CallOnCancel(ServerReactor* reactor);
-
-  // Implement the cancellation constraint counter. Return true if OnCancel
-  // should be called, false otherwise.
-  bool UnblockCancellation() {
-    return on_cancel_conditions_remaining_.fetch_sub(
-               1, std::memory_order_acq_rel) == 1;
-  }
-
-  /// Decreases the reference count and returns the previous value
-  int Unref() {
-    return callbacks_outstanding_.fetch_sub(1, std::memory_order_acq_rel);
-  }
-
-  std::atomic_int on_cancel_conditions_remaining_{2};
-  std::atomic_int callbacks_outstanding_{
-      3};  // reserve for start, Finish, and CompletionOp
-};
-
-template <class Request, class Response>
-class DefaultMessageHolder : public MessageHolder<Request, Response> {
- public:
-  DefaultMessageHolder() {
-    this->set_request(&request_obj_);
-    this->set_response(&response_obj_);
-  }
-  void Release() override {
-    // the object is allocated in the call arena.
-    this->~DefaultMessageHolder<Request, Response>();
-  }
-
- private:
-  Request request_obj_;
-  Response response_obj_;
-};
-
-}  // namespace internal
-
-// Forward declarations
-class ServerUnaryReactor;
-template <class Request>
-class ServerReadReactor;
-template <class Response>
-class ServerWriteReactor;
-template <class Request, class Response>
-class ServerBidiReactor;
-
-// NOTE: The actual call/stream object classes are provided as API only to
-// support mocking. There are no implementations of these class interfaces in
-// the API.
-class ServerCallbackUnary : public internal::ServerCallbackCall {
- public:
-  ~ServerCallbackUnary() override {}
-  virtual void Finish(grpc::Status s) = 0;
-  virtual void SendInitialMetadata() = 0;
-
- protected:
-  // Use a template rather than explicitly specifying ServerUnaryReactor to
-  // delay binding and avoid a circular forward declaration issue
-  template <class Reactor>
-  void BindReactor(Reactor* reactor) {
-    reactor->InternalBindCall(this);
-  }
-};
-
-template <class Request>
-class ServerCallbackReader : public internal::ServerCallbackCall {
- public:
-  ~ServerCallbackReader() override {}
-  virtual void Finish(grpc::Status s) = 0;
-  virtual void SendInitialMetadata() = 0;
-  virtual void Read(Request* msg) = 0;
-
- protected:
-  void BindReactor(ServerReadReactor<Request>* reactor) {
-    reactor->InternalBindReader(this);
-  }
-};
-
-template <class Response>
-class ServerCallbackWriter : public internal::ServerCallbackCall {
- public:
-  ~ServerCallbackWriter() override {}
-
-  virtual void Finish(grpc::Status s) = 0;
-  virtual void SendInitialMetadata() = 0;
-  virtual void Write(const Response* msg, grpc::WriteOptions options) = 0;
-  virtual void WriteAndFinish(const Response* msg, grpc::WriteOptions options,
-                              grpc::Status s) = 0;
-
- protected:
-  void BindReactor(ServerWriteReactor<Response>* reactor) {
-    reactor->InternalBindWriter(this);
-  }
-};
-
-template <class Request, class Response>
-class ServerCallbackReaderWriter : public internal::ServerCallbackCall {
- public:
-  ~ServerCallbackReaderWriter() override {}
-
-  virtual void Finish(grpc::Status s) = 0;
-  virtual void SendInitialMetadata() = 0;
-  virtual void Read(Request* msg) = 0;
-  virtual void Write(const Response* msg, grpc::WriteOptions options) = 0;
-  virtual void WriteAndFinish(const Response* msg, grpc::WriteOptions options,
-                              grpc::Status s) = 0;
-
- protected:
-  void BindReactor(ServerBidiReactor<Request, Response>* reactor) {
-    reactor->InternalBindStream(this);
-  }
-};
-
-// The following classes are the reactor interfaces that are to be implemented
-// by the user, returned as the output parameter of the method handler for a
-// callback method. Note that none of the classes are pure; all reactions have a
-// default empty reaction so that the user class only needs to override those
-// reactions that it cares about. The reaction methods will be invoked by the
-// library in response to the completion of various operations. Reactions must
-// not include blocking operations (such as blocking I/O, starting synchronous
-// RPCs, or waiting on condition variables). Reactions may be invoked
-// concurrently, except that OnDone is called after all others (assuming proper
-// API usage). The reactor may not be deleted until OnDone is called.
-
-/// \a ServerBidiReactor is the interface for a bidirectional streaming RPC.
-template <class Request, class Response>
-class ServerBidiReactor : public internal::ServerReactor {
- public:
-  // NOTE: Initializing stream_ as a constructor initializer rather than a
-  //       default initializer because gcc-4.x requires a copy constructor for
-  //       default initializing a templated member, which isn't ok for atomic.
-  // TODO(vjpai): Switch to default constructor and default initializer when
-  //              gcc-4.x is no longer supported
-  ServerBidiReactor() : stream_(nullptr) {}
-  ~ServerBidiReactor() override = default;
-
-  /// Send any initial metadata stored in the RPC context. If not invoked,
-  /// any initial metadata will be passed along with the first Write or the
-  /// Finish (if there are no writes).
-  void StartSendInitialMetadata() Y_ABSL_LOCKS_EXCLUDED(stream_mu_) {
-    ServerCallbackReaderWriter<Request, Response>* stream =
-        stream_.load(std::memory_order_acquire);
-    if (stream == nullptr) {
-      grpc::internal::MutexLock l(&stream_mu_);
-      stream = stream_.load(std::memory_order_relaxed);
-      if (stream == nullptr) {
-        backlog_.send_initial_metadata_wanted = true;
-        return;
-      }
-    }
-    stream->SendInitialMetadata();
-  }
-
-  /// Initiate a read operation.
-  ///
-  /// \param[out] req Where to eventually store the read message. Valid when
-  ///                 the library calls OnReadDone
-  void StartRead(Request* req) Y_ABSL_LOCKS_EXCLUDED(stream_mu_) {
-    ServerCallbackReaderWriter<Request, Response>* stream =
-        stream_.load(std::memory_order_acquire);
-    if (stream == nullptr) {
-      grpc::internal::MutexLock l(&stream_mu_);
-      stream = stream_.load(std::memory_order_relaxed);
-      if (stream == nullptr) {
-        backlog_.read_wanted = req;
-        return;
-      }
-    }
-    stream->Read(req);
-  }
-
-  /// Initiate a write operation.
-  ///
-  /// \param[in] resp The message to be written. The library does not take
-  ///                 ownership but the caller must ensure that the message is
-  ///                 not deleted or modified until OnWriteDone is called.
-  void StartWrite(const Response* resp) {
-    StartWrite(resp, grpc::WriteOptions());
-  }
-
-  /// Initiate a write operation with specified options.
-  ///
-  /// \param[in] resp The message to be written. The library does not take
-  ///                 ownership but the caller must ensure that the message is
-  ///                 not deleted or modified until OnWriteDone is called.
-  /// \param[in] options The WriteOptions to use for writing this message
-  void StartWrite(const Response* resp, grpc::WriteOptions options)
-      Y_ABSL_LOCKS_EXCLUDED(stream_mu_) {
-    ServerCallbackReaderWriter<Request, Response>* stream =
-        stream_.load(std::memory_order_acquire);
-    if (stream == nullptr) {
-      grpc::internal::MutexLock l(&stream_mu_);
-      stream = stream_.load(std::memory_order_relaxed);
-      if (stream == nullptr) {
-        backlog_.write_wanted = resp;
-        backlog_.write_options_wanted = options;
-        return;
-      }
-    }
-    stream->Write(resp, options);
-  }
-
-  /// Initiate a write operation with specified options and final RPC Status,
-  /// which also causes any trailing metadata for this RPC to be sent out.
-  /// StartWriteAndFinish is like merging StartWriteLast and Finish into a
-  /// single step. A key difference, though, is that this operation doesn't have
-  /// an OnWriteDone reaction - it is considered complete only when OnDone is
-  /// available. An RPC can either have StartWriteAndFinish or Finish, but not
-  /// both.
-  ///
-  /// \param[in] resp The message to be written. The library does not take
-  ///                 ownership but the caller must ensure that the message is
-  ///                 not deleted or modified until OnDone is called.
-  /// \param[in] options The WriteOptions to use for writing this message
-  /// \param[in] s The status outcome of this RPC
-  void StartWriteAndFinish(const Response* resp, grpc::WriteOptions options,
-                           grpc::Status s) Y_ABSL_LOCKS_EXCLUDED(stream_mu_) {
-    ServerCallbackReaderWriter<Request, Response>* stream =
-        stream_.load(std::memory_order_acquire);
-    if (stream == nullptr) {
-      grpc::internal::MutexLock l(&stream_mu_);
-      stream = stream_.load(std::memory_order_relaxed);
-      if (stream == nullptr) {
-        backlog_.write_and_finish_wanted = true;
-        backlog_.write_wanted = resp;
-        backlog_.write_options_wanted = options;
-        backlog_.status_wanted = std::move(s);
-        return;
-      }
-    }
-    stream->WriteAndFinish(resp, options, std::move(s));
-  }
-
-  /// Inform system of a planned write operation with specified options, but
-  /// allow the library to schedule the actual write coalesced with the writing
-  /// of trailing metadata (which takes place on a Finish call).
-  ///
-  /// \param[in] resp The message to be written. The library does not take
-  ///                 ownership but the caller must ensure that the message is
-  ///                 not deleted or modified until OnWriteDone is called.
-  /// \param[in] options The WriteOptions to use for writing this message
-  void StartWriteLast(const Response* resp, grpc::WriteOptions options) {
-    StartWrite(resp, options.set_last_message());
-  }
-
-  /// Indicate that the stream is to be finished and the trailing metadata and
-  /// RPC status are to be sent. Every RPC MUST be finished using either Finish
-  /// or StartWriteAndFinish (but not both), even if the RPC is already
-  /// cancelled.
-  ///
-  /// \param[in] s The status outcome of this RPC
-  void Finish(grpc::Status s) Y_ABSL_LOCKS_EXCLUDED(stream_mu_) {
-    ServerCallbackReaderWriter<Request, Response>* stream =
-        stream_.load(std::memory_order_acquire);
-    if (stream == nullptr) {
-      grpc::internal::MutexLock l(&stream_mu_);
-      stream = stream_.load(std::memory_order_relaxed);
-      if (stream == nullptr) {
-        backlog_.finish_wanted = true;
-        backlog_.status_wanted = std::move(s);
-        return;
-      }
-    }
-    stream->Finish(std::move(s));
-  }
-
-  /// Notifies the application that an explicit StartSendInitialMetadata
-  /// operation completed. Not used when the sending of initial metadata
-  /// piggybacks onto the first write.
-  ///
-  /// \param[in] ok Was it successful? If false, no further write-side operation
-  ///               will succeed.
-  virtual void OnSendInitialMetadataDone(bool /*ok*/) {}
-
-  /// Notifies the application that a StartRead operation completed.
-  ///
-  /// \param[in] ok Was it successful? If false, no further read-side operation
-  ///               will succeed.
-  virtual void OnReadDone(bool /*ok*/) {}
-
-  /// Notifies the application that a StartWrite (or StartWriteLast) operation
-  /// completed.
-  ///
-  /// \param[in] ok Was it successful? If false, no further write-side operation
-  ///               will succeed.
-  virtual void OnWriteDone(bool /*ok*/) {}
-
-  /// Notifies the application that all operations associated with this RPC
-  /// have completed. This is an override (from the internal base class) but
-  /// still abstract, so derived classes MUST override it to be instantiated.
-  void OnDone() override = 0;
-
-  /// Notifies the application that this RPC has been cancelled. This is an
-  /// override (from the internal base class) but not final, so derived classes
-  /// should override it if they want to take action.
-  void OnCancel() override {}
-
- private:
-  friend class ServerCallbackReaderWriter<Request, Response>;
-  // May be overridden by internal implementation details. This is not a public
-  // customization point.
-  virtual void InternalBindStream(
-      ServerCallbackReaderWriter<Request, Response>* stream) {
-    grpc::internal::MutexLock l(&stream_mu_);
-
-    if (GPR_UNLIKELY(backlog_.send_initial_metadata_wanted)) {
-      stream->SendInitialMetadata();
-    }
-    if (GPR_UNLIKELY(backlog_.read_wanted != nullptr)) {
-      stream->Read(backlog_.read_wanted);
-    }
-    if (GPR_UNLIKELY(backlog_.write_and_finish_wanted)) {
-      stream->WriteAndFinish(backlog_.write_wanted,
-                             std::move(backlog_.write_options_wanted),
-                             std::move(backlog_.status_wanted));
-    } else {
-      if (GPR_UNLIKELY(backlog_.write_wanted != nullptr)) {
-        stream->Write(backlog_.write_wanted,
-                      std::move(backlog_.write_options_wanted));
-      }
-      if (GPR_UNLIKELY(backlog_.finish_wanted)) {
-        stream->Finish(std::move(backlog_.status_wanted));
-      }
-    }
-    // Set stream_ last so that other functions can use it lock-free
-    stream_.store(stream, std::memory_order_release);
-  }
-
-  grpc::internal::Mutex stream_mu_;
-  // TODO(vjpai): Make stream_or_backlog_ into a std::variant or y_absl::variant
-  //              once C++17 or ABSL is supported since stream and backlog are
-  //              mutually exclusive in this class. Do likewise with the
-  //              remaining reactor classes and their backlogs as well.
-  std::atomic<ServerCallbackReaderWriter<Request, Response>*> stream_{nullptr};
-  struct PreBindBacklog {
-    bool send_initial_metadata_wanted = false;
-    bool write_and_finish_wanted = false;
-    bool finish_wanted = false;
-    Request* read_wanted = nullptr;
-    const Response* write_wanted = nullptr;
-    grpc::WriteOptions write_options_wanted;
-    grpc::Status status_wanted;
-  };
-  PreBindBacklog backlog_ Y_ABSL_GUARDED_BY(stream_mu_);
-};
-
-/// \a ServerReadReactor is the interface for a client-streaming RPC.
-template <class Request>
-class ServerReadReactor : public internal::ServerReactor {
- public:
-  ServerReadReactor() : reader_(nullptr) {}
-  ~ServerReadReactor() override = default;
-
-  /// The following operation initiations are exactly like ServerBidiReactor.
-  void StartSendInitialMetadata() Y_ABSL_LOCKS_EXCLUDED(reader_mu_) {
-    ServerCallbackReader<Request>* reader =
-        reader_.load(std::memory_order_acquire);
-    if (reader == nullptr) {
-      grpc::internal::MutexLock l(&reader_mu_);
-      reader = reader_.load(std::memory_order_relaxed);
-      if (reader == nullptr) {
-        backlog_.send_initial_metadata_wanted = true;
-        return;
-      }
-    }
-    reader->SendInitialMetadata();
-  }
-  void StartRead(Request* req) Y_ABSL_LOCKS_EXCLUDED(reader_mu_) {
-    ServerCallbackReader<Request>* reader =
-        reader_.load(std::memory_order_acquire);
-    if (reader == nullptr) {
-      grpc::internal::MutexLock l(&reader_mu_);
-      reader = reader_.load(std::memory_order_relaxed);
-      if (reader == nullptr) {
-        backlog_.read_wanted = req;
-        return;
-      }
-    }
-    reader->Read(req);
-  }
-  void Finish(grpc::Status s) Y_ABSL_LOCKS_EXCLUDED(reader_mu_) {
-    ServerCallbackReader<Request>* reader =
-        reader_.load(std::memory_order_acquire);
-    if (reader == nullptr) {
-      grpc::internal::MutexLock l(&reader_mu_);
-      reader = reader_.load(std::memory_order_relaxed);
-      if (reader == nullptr) {
-        backlog_.finish_wanted = true;
-        backlog_.status_wanted = std::move(s);
-        return;
-      }
-    }
-    reader->Finish(std::move(s));
-  }
-
-  /// The following notifications are exactly like ServerBidiReactor.
-  virtual void OnSendInitialMetadataDone(bool /*ok*/) {}
-  virtual void OnReadDone(bool /*ok*/) {}
-  void OnDone() override = 0;
-  void OnCancel() override {}
-
- private:
-  friend class ServerCallbackReader<Request>;
-
-  // May be overridden by internal implementation details. This is not a public
-  // customization point.
-  virtual void InternalBindReader(ServerCallbackReader<Request>* reader)
-      Y_ABSL_LOCKS_EXCLUDED(reader_mu_) {
-    grpc::internal::MutexLock l(&reader_mu_);
-
-    if (GPR_UNLIKELY(backlog_.send_initial_metadata_wanted)) {
-      reader->SendInitialMetadata();
-    }
-    if (GPR_UNLIKELY(backlog_.read_wanted != nullptr)) {
-      reader->Read(backlog_.read_wanted);
-    }
-    if (GPR_UNLIKELY(backlog_.finish_wanted)) {
-      reader->Finish(std::move(backlog_.status_wanted));
-    }
-    // Set reader_ last so that other functions can use it lock-free
-    reader_.store(reader, std::memory_order_release);
-  }
-
-  grpc::internal::Mutex reader_mu_;
-  std::atomic<ServerCallbackReader<Request>*> reader_{nullptr};
-  struct PreBindBacklog {
-    bool send_initial_metadata_wanted = false;
-    bool finish_wanted = false;
-    Request* read_wanted = nullptr;
-    grpc::Status status_wanted;
-  };
-  PreBindBacklog backlog_ Y_ABSL_GUARDED_BY(reader_mu_);
-};
-
-/// \a ServerWriteReactor is the interface for a server-streaming RPC.
-template <class Response>
-class ServerWriteReactor : public internal::ServerReactor {
- public:
-  ServerWriteReactor() : writer_(nullptr) {}
-  ~ServerWriteReactor() override = default;
-
-  /// The following operation initiations are exactly like ServerBidiReactor.
-  void StartSendInitialMetadata() Y_ABSL_LOCKS_EXCLUDED(writer_mu_) {
-    ServerCallbackWriter<Response>* writer =
-        writer_.load(std::memory_order_acquire);
-    if (writer == nullptr) {
-      grpc::internal::MutexLock l(&writer_mu_);
-      writer = writer_.load(std::memory_order_relaxed);
-      if (writer == nullptr) {
-        backlog_.send_initial_metadata_wanted = true;
-        return;
-      }
-    }
-    writer->SendInitialMetadata();
-  }
-  void StartWrite(const Response* resp) {
-    StartWrite(resp, grpc::WriteOptions());
-  }
-  void StartWrite(const Response* resp, grpc::WriteOptions options)
-      Y_ABSL_LOCKS_EXCLUDED(writer_mu_) {
-    ServerCallbackWriter<Response>* writer =
-        writer_.load(std::memory_order_acquire);
-    if (writer == nullptr) {
-      grpc::internal::MutexLock l(&writer_mu_);
-      writer = writer_.load(std::memory_order_relaxed);
-      if (writer == nullptr) {
-        backlog_.write_wanted = resp;
-        backlog_.write_options_wanted = options;
-        return;
-      }
-    }
-    writer->Write(resp, options);
-  }
-  void StartWriteAndFinish(const Response* resp, grpc::WriteOptions options,
-                           grpc::Status s) Y_ABSL_LOCKS_EXCLUDED(writer_mu_) {
-    ServerCallbackWriter<Response>* writer =
-        writer_.load(std::memory_order_acquire);
-    if (writer == nullptr) {
-      grpc::internal::MutexLock l(&writer_mu_);
-      writer = writer_.load(std::memory_order_relaxed);
-      if (writer == nullptr) {
-        backlog_.write_and_finish_wanted = true;
-        backlog_.write_wanted = resp;
-        backlog_.write_options_wanted = options;
-        backlog_.status_wanted = std::move(s);
-        return;
-      }
-    }
-    writer->WriteAndFinish(resp, options, std::move(s));
-  }
-  void StartWriteLast(const Response* resp, grpc::WriteOptions options) {
-    StartWrite(resp, options.set_last_message());
-  }
-  void Finish(grpc::Status s) Y_ABSL_LOCKS_EXCLUDED(writer_mu_) {
-    ServerCallbackWriter<Response>* writer =
-        writer_.load(std::memory_order_acquire);
-    if (writer == nullptr) {
-      grpc::internal::MutexLock l(&writer_mu_);
-      writer = writer_.load(std::memory_order_relaxed);
-      if (writer == nullptr) {
-        backlog_.finish_wanted = true;
-        backlog_.status_wanted = std::move(s);
-        return;
-      }
-    }
-    writer->Finish(std::move(s));
-  }
-
-  /// The following notifications are exactly like ServerBidiReactor.
-  virtual void OnSendInitialMetadataDone(bool /*ok*/) {}
-  virtual void OnWriteDone(bool /*ok*/) {}
-  void OnDone() override = 0;
-  void OnCancel() override {}
-
- private:
-  friend class ServerCallbackWriter<Response>;
-  // May be overridden by internal implementation details. This is not a public
-  // customization point.
-  virtual void InternalBindWriter(ServerCallbackWriter<Response>* writer)
-      Y_ABSL_LOCKS_EXCLUDED(writer_mu_) {
-    grpc::internal::MutexLock l(&writer_mu_);
-
-    if (GPR_UNLIKELY(backlog_.send_initial_metadata_wanted)) {
-      writer->SendInitialMetadata();
-    }
-    if (GPR_UNLIKELY(backlog_.write_and_finish_wanted)) {
-      writer->WriteAndFinish(backlog_.write_wanted,
-                             std::move(backlog_.write_options_wanted),
-                             std::move(backlog_.status_wanted));
-    } else {
-      if (GPR_UNLIKELY(backlog_.write_wanted != nullptr)) {
-        writer->Write(backlog_.write_wanted,
-                      std::move(backlog_.write_options_wanted));
-      }
-      if (GPR_UNLIKELY(backlog_.finish_wanted)) {
-        writer->Finish(std::move(backlog_.status_wanted));
-      }
-    }
-    // Set writer_ last so that other functions can use it lock-free
-    writer_.store(writer, std::memory_order_release);
-  }
-
-  grpc::internal::Mutex writer_mu_;
-  std::atomic<ServerCallbackWriter<Response>*> writer_{nullptr};
-  struct PreBindBacklog {
-    bool send_initial_metadata_wanted = false;
-    bool write_and_finish_wanted = false;
-    bool finish_wanted = false;
-    const Response* write_wanted = nullptr;
-    grpc::WriteOptions write_options_wanted;
-    grpc::Status status_wanted;
-  };
-  PreBindBacklog backlog_ Y_ABSL_GUARDED_BY(writer_mu_);
-};
-
-class ServerUnaryReactor : public internal::ServerReactor {
- public:
-  ServerUnaryReactor() : call_(nullptr) {}
-  ~ServerUnaryReactor() override = default;
-
-  /// StartSendInitialMetadata is exactly like ServerBidiReactor.
-  void StartSendInitialMetadata() Y_ABSL_LOCKS_EXCLUDED(call_mu_) {
-    ServerCallbackUnary* call = call_.load(std::memory_order_acquire);
-    if (call == nullptr) {
-      grpc::internal::MutexLock l(&call_mu_);
-      call = call_.load(std::memory_order_relaxed);
-      if (call == nullptr) {
-        backlog_.send_initial_metadata_wanted = true;
-        return;
-      }
-    }
-    call->SendInitialMetadata();
-  }
-  /// Finish is similar to ServerBidiReactor except for one detail.
-  /// If the status is non-OK, any message will not be sent. Instead,
-  /// the client will only receive the status and any trailing metadata.
-  void Finish(grpc::Status s) Y_ABSL_LOCKS_EXCLUDED(call_mu_) {
-    ServerCallbackUnary* call = call_.load(std::memory_order_acquire);
-    if (call == nullptr) {
-      grpc::internal::MutexLock l(&call_mu_);
-      call = call_.load(std::memory_order_relaxed);
-      if (call == nullptr) {
-        backlog_.finish_wanted = true;
-        backlog_.status_wanted = std::move(s);
-        return;
-      }
-    }
-    call->Finish(std::move(s));
-  }
-
-  /// The following notifications are exactly like ServerBidiReactor.
-  virtual void OnSendInitialMetadataDone(bool /*ok*/) {}
-  void OnDone() override = 0;
-  void OnCancel() override {}
-
- private:
-  friend class ServerCallbackUnary;
-  // May be overridden by internal implementation details. This is not a public
-  // customization point.
-  virtual void InternalBindCall(ServerCallbackUnary* call)
-      Y_ABSL_LOCKS_EXCLUDED(call_mu_) {
-    grpc::internal::MutexLock l(&call_mu_);
-
-    if (GPR_UNLIKELY(backlog_.send_initial_metadata_wanted)) {
-      call->SendInitialMetadata();
-    }
-    if (GPR_UNLIKELY(backlog_.finish_wanted)) {
-      call->Finish(std::move(backlog_.status_wanted));
-    }
-    // Set call_ last so that other functions can use it lock-free
-    call_.store(call, std::memory_order_release);
-  }
-
-  grpc::internal::Mutex call_mu_;
-  std::atomic<ServerCallbackUnary*> call_{nullptr};
-  struct PreBindBacklog {
-    bool send_initial_metadata_wanted = false;
-    bool finish_wanted = false;
-    grpc::Status status_wanted;
-  };
-  PreBindBacklog backlog_ Y_ABSL_GUARDED_BY(call_mu_);
-};
-
-namespace internal {
-
-template <class Base>
-class FinishOnlyReactor : public Base {
- public:
-  explicit FinishOnlyReactor(grpc::Status s) { this->Finish(std::move(s)); }
-  void OnDone() override { this->~FinishOnlyReactor(); }
-};
-
-using UnimplementedUnaryReactor = FinishOnlyReactor<ServerUnaryReactor>;
-template <class Request>
-using UnimplementedReadReactor = FinishOnlyReactor<ServerReadReactor<Request>>;
-template <class Response>
-using UnimplementedWriteReactor =
-    FinishOnlyReactor<ServerWriteReactor<Response>>;
-template <class Request, class Response>
-using UnimplementedBidiReactor =
-    FinishOnlyReactor<ServerBidiReactor<Request, Response>>;
-
-}  // namespace internal
-
-// TODO(vjpai): Remove namespace experimental when last known users are migrated
-// off.
-namespace experimental {
-
-template <class Request, class Response>
-using ServerBidiReactor = ::grpc::ServerBidiReactor<Request, Response>;
-
-}  // namespace experimental
-
-}  // namespace grpc
-
-#endif  // GRPCPP_IMPL_CODEGEN_SERVER_CALLBACK_H
diff --git a/contrib/libs/grpc/include/grpcpp/impl/codegen/server_context.h b/contrib/libs/grpc/include/grpcpp/impl/codegen/server_context.h
deleted file mode 100644
index 406fc90802..0000000000
--- a/contrib/libs/grpc/include/grpcpp/impl/codegen/server_context.h
+++ /dev/null
@@ -1,679 +0,0 @@
-/*
- *
- * Copyright 2019 gRPC authors.
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
- */
-
-#ifndef GRPCPP_IMPL_CODEGEN_SERVER_CONTEXT_H
-#define GRPCPP_IMPL_CODEGEN_SERVER_CONTEXT_H
-
-// IWYU pragma: private, include <grpcpp/server_context.h>
-
-#include <grpc/impl/codegen/port_platform.h>
-
-#include <atomic>
-#include <cassert>
-#include <map>
-#include <memory>
-#include <type_traits>
-#include <vector>
-
-#include <grpc/impl/codegen/compression_types.h>
-#include <grpcpp/impl/codegen/call.h>
-#include <grpcpp/impl/codegen/call_op_set.h>
-#include <grpcpp/impl/codegen/callback_common.h>
-#include <grpcpp/impl/codegen/completion_queue_tag.h>
-#include <grpcpp/impl/codegen/config.h>
-#include <grpcpp/impl/codegen/create_auth_context.h>
-#include <grpcpp/impl/codegen/message_allocator.h>
-#include <grpcpp/impl/codegen/metadata_map.h>
-#include <grpcpp/impl/codegen/rpc_service_method.h>
-#include <grpcpp/impl/codegen/security/auth_context.h>
-#include <grpcpp/impl/codegen/server_callback.h>
-#include <grpcpp/impl/codegen/server_interceptor.h>
-#include <grpcpp/impl/codegen/status.h>
-#include <grpcpp/impl/codegen/string_ref.h>
-#include <grpcpp/impl/codegen/time.h>
-
-struct grpc_metadata;
-struct grpc_call;
-struct census_context;
-
-namespace grpc {
-template <class W, class R>
-class ServerAsyncReader;
-template <class W>
-class ServerAsyncWriter;
-template <class W>
-class ServerAsyncResponseWriter;
-template <class W, class R>
-class ServerAsyncReaderWriter;
-template <class R>
-class ServerReader;
-template <class W>
-class ServerWriter;
-
-extern CoreCodegenInterface* g_core_codegen_interface;
-
-namespace internal {
-template <class ServiceType, class RequestType, class ResponseType>
-class BidiStreamingHandler;
-template <class RequestType, class ResponseType>
-class CallbackUnaryHandler;
-template <class RequestType, class ResponseType>
-class CallbackClientStreamingHandler;
-template <class RequestType, class ResponseType>
-class CallbackServerStreamingHandler;
-template <class RequestType, class ResponseType>
-class CallbackBidiHandler;
-template <class ServiceType, class RequestType, class ResponseType>
-class ClientStreamingHandler;
-template <class ResponseType>
-void UnaryRunHandlerHelper(const MethodHandler::HandlerParameter&,
-                           ResponseType*, Status&);
-template <class ServiceType, class RequestType, class ResponseType,
-          class BaseRequestType, class BaseResponseType>
-class RpcMethodHandler;
-template <class Base>
-class FinishOnlyReactor;
-template <class W, class R>
-class ServerReaderWriterBody;
-template <class ServiceType, class RequestType, class ResponseType>
-class ServerStreamingHandler;
-class ServerReactor;
-template <class Streamer, bool WriteNeeded>
-class TemplatedBidiStreamingHandler;
-template <grpc::StatusCode code>
-class ErrorMethodHandler;
-}  // namespace internal
-
-class ClientContext;
-class CompletionQueue;
-class GenericServerContext;
-class Server;
-class ServerInterface;
-class ContextAllocator;
-class GenericCallbackServerContext;
-
-namespace internal {
-class Call;
-}  // namespace internal
-
-namespace testing {
-class InteropServerContextInspector;
-class ServerContextTestSpouse;
-class DefaultReactorTestPeer;
-}  // namespace testing
-
-namespace experimental {
-class OrcaServerInterceptor;
-class CallMetricRecorder;
-}  // namespace experimental
-
-/// Base class of ServerContext.
-class ServerContextBase {
- public:
-  virtual ~ServerContextBase();
-
-  /// Return the deadline for the server call.
-  std::chrono::system_clock::time_point deadline() const {
-    return grpc::Timespec2Timepoint(deadline_);
-  }
-
-  /// Return a \a gpr_timespec representation of the server call's deadline.
-  gpr_timespec raw_deadline() const { return deadline_; }
-
-  /// Add the (\a key, \a value) pair to the initial metadata
-  /// associated with a server call. These are made available at the client side
-  /// by the \a grpc::ClientContext::GetServerInitialMetadata() method.
-  ///
-  /// \warning This method should only be called before sending initial metadata
-  /// to the client (which can happen explicitly, or implicitly when sending a
-  /// a response message or status to the client).
-  ///
-  /// \param key The metadata key. If \a value is binary data, it must
-  /// end in "-bin".
-  /// \param value The metadata value. If its value is binary, the key name
-  /// must end in "-bin".
-  ///
-  /// Metadata must conform to the following format:
-  /**
-  \verbatim
-  Custom-Metadata -> Binary-Header / ASCII-Header
-  Binary-Header -> {Header-Name "-bin" } {binary value}
-  ASCII-Header -> Header-Name ASCII-Value
-  Header-Name -> 1*( %x30-39 / %x61-7A / "_" / "-" / ".") ; 0-9 a-z _ - .
-  ASCII-Value -> 1*( %x20-%x7E ) ; space and printable ASCII
-  \endverbatim
-  **/
-  void AddInitialMetadata(const TString& key, const TString& value);
-
-  /// Add the (\a key, \a value) pair to the initial metadata
-  /// associated with a server call. These are made available at the client
-  /// side by the \a grpc::ClientContext::GetServerTrailingMetadata() method.
-  ///
-  /// \warning This method should only be called before sending trailing
-  /// metadata to the client (which happens when the call is finished and a
-  /// status is sent to the client).
-  ///
-  /// \param key The metadata key. If \a value is binary data,
-  /// it must end in "-bin".
-  /// \param value The metadata value. If its value is binary, the key name
-  /// must end in "-bin".
-  ///
-  /// Metadata must conform to the following format:
-  /**
-  \verbatim
-  Custom-Metadata -> Binary-Header / ASCII-Header
-  Binary-Header -> {Header-Name "-bin" } {binary value}
-  ASCII-Header -> Header-Name ASCII-Value
-  Header-Name -> 1*( %x30-39 / %x61-7A / "_" / "-" / ".") ; 0-9 a-z _ - .
-  ASCII-Value -> 1*( %x20-%x7E ) ; space and printable ASCII
-  \endverbatim
-  **/
-  void AddTrailingMetadata(const TString& key, const TString& value);
-
-  /// Return whether this RPC failed before the server could provide its status
-  /// back to the client. This could be because of explicit API cancellation
-  /// from the client-side or server-side, because of deadline exceeded, network
-  /// connection reset, HTTP/2 parameter configuration (e.g., max message size,
-  /// max connection age), etc. It does NOT include failure due to a non-OK
-  /// status return from the server application's request handler, including
-  /// Status::CANCELLED.
-  ///
-  /// IsCancelled is always safe to call when using sync or callback API.
-  /// When using async API, it is only safe to call IsCancelled after
-  /// the AsyncNotifyWhenDone tag has been delivered. Thread-safe.
-  bool IsCancelled() const;
-
-  /// Cancel the Call from the server. This is a best-effort API and
-  /// depending on when it is called, the RPC may still appear successful to
-  /// the client. For example, if TryCancel() is called on a separate thread, it
-  /// might race with the server handler which might return success to the
-  /// client before TryCancel() was even started by the thread.
-  ///
-  /// It is the caller's responsibility to prevent such races and ensure that if
-  /// TryCancel() is called, the serverhandler must return Status::CANCELLED.
-  /// The only exception is that if the serverhandler is already returning an
-  /// error status code, it is ok to not return Status::CANCELLED even if
-  /// TryCancel() was called.
-  ///
-  /// For reasons such as the above, it is generally preferred to explicitly
-  /// finish an RPC by returning Status::CANCELLED rather than using TryCancel.
-  ///
-  /// Note that TryCancel() does not change any of the tags that are pending
-  /// on the completion queue. All pending tags will still be delivered
-  /// (though their ok result may reflect the effect of cancellation).
-  void TryCancel() const;
-
-  /// Return a collection of initial metadata key-value pairs sent from the
-  /// client. Note that keys may happen more than
-  /// once (ie, a \a std::multimap is returned).
-  ///
-  /// It is safe to use this method after initial metadata has been received,
-  /// Calls always begin with the client sending initial metadata, so this is
-  /// safe to access as soon as the call has begun on the server side.
-  ///
-  /// \return A multimap of initial metadata key-value pairs from the server.
-  const std::multimap<grpc::string_ref, grpc::string_ref>& client_metadata()
-      const {
-    return *client_metadata_.map();
-  }
-
-  /// Return the compression algorithm to be used by the server call.
-  grpc_compression_level compression_level() const {
-    return compression_level_;
-  }
-
-  /// Set \a level to be the compression level used for the server call.
-  ///
-  /// \param level The compression level used for the server call.
-  void set_compression_level(grpc_compression_level level) {
-    compression_level_set_ = true;
-    compression_level_ = level;
-  }
-
-  /// Return a bool indicating whether the compression level for this call
-  /// has been set (either implicitly or through a previous call to
-  /// \a set_compression_level.
-  bool compression_level_set() const { return compression_level_set_; }
-
-  /// Return the compression algorithm the server call will request be used.
-  /// Note that the gRPC runtime may decide to ignore this request, for example,
-  /// due to resource constraints, or if the server is aware the client doesn't
-  /// support the requested algorithm.
-  grpc_compression_algorithm compression_algorithm() const {
-    return compression_algorithm_;
-  }
-  /// Set \a algorithm to be the compression algorithm used for the server call.
-  ///
-  /// \param algorithm The compression algorithm used for the server call.
-  void set_compression_algorithm(grpc_compression_algorithm algorithm);
-
-  /// Set the serialized load reporting costs in \a cost_data for the call.
-  void SetLoadReportingCosts(const std::vector<TString>& cost_data);
-
-  /// Return the authentication context for this server call.
-  ///
-  /// \see grpc::AuthContext.
-  std::shared_ptr<const grpc::AuthContext> auth_context() const {
-    if (auth_context_ == nullptr) {
-      auth_context_ = grpc::CreateAuthContext(call_.call);
-    }
-    return auth_context_;
-  }
-
-  /// Return the peer uri in a string.
-  /// WARNING: this value is never authenticated or subject to any security
-  /// related code. It must not be used for any authentication related
-  /// functionality. Instead, use auth_context.
-  TString peer() const;
-
-  /// Get the census context associated with this server call.
-  const struct census_context* census_context() const;
-
-  /// Should be used for framework-level extensions only.
-  /// Applications never need to call this method.
-  grpc_call* c_call() { return call_.call; }
-
-  /// Get the \a CallMetricRecorder object for the current RPC.
-  /// Use it to record metrics during your RPC to send back to the
-  /// client in order to make load balancing decisions. This will
-  /// return nullptr if the feature hasn't been enabled using
-  /// \a EnableCallMetricRecording.
-  experimental::CallMetricRecorder* ExperimentalGetCallMetricRecorder() {
-    return call_metric_recorder_;
-  }
-
-  /// EXPERIMENTAL API
-  /// Returns the call's authority.
-  grpc::string_ref ExperimentalGetAuthority() const;
-
- protected:
-  /// Async only. Has to be called before the rpc starts.
-  /// Returns the tag in completion queue when the rpc finishes.
-  /// IsCancelled() can then be called to check whether the rpc was cancelled.
-  /// TODO(vjpai): Fix this so that the tag is returned even if the call never
-  /// starts (https://github.com/grpc/grpc/issues/10136).
-  void AsyncNotifyWhenDone(void* tag) {
-    has_notify_when_done_tag_ = true;
-    async_notify_when_done_tag_ = tag;
-  }
-
-  /// NOTE: This is an API for advanced users who need custom allocators.
-  /// Get and maybe mutate the allocator state associated with the current RPC.
-  /// Currently only applicable for callback unary RPC methods.
-  RpcAllocatorState* GetRpcAllocatorState() { return message_allocator_state_; }
-
-  /// Get a library-owned default unary reactor for use in minimal reaction
-  /// cases. This supports typical unary RPC usage of providing a response and
-  /// status. It supports immediate Finish (finish from within the method
-  /// handler) or delayed Finish (finish called after the method handler
-  /// invocation). It does not support reacting to cancellation or completion,
-  /// or early sending of initial metadata. Since this is a library-owned
-  /// reactor, it should not be delete'd or freed in any way. This is more
-  /// efficient than creating a user-owned reactor both because of avoiding an
-  /// allocation and because its minimal reactions are optimized using a core
-  /// surface flag that allows their reactions to run inline without any
-  /// thread-hop.
-  ///
-  /// This method should not be called more than once or called after return
-  /// from the method handler.
-  grpc::ServerUnaryReactor* DefaultReactor() {
-    // Short-circuit the case where a default reactor was already set up by
-    // the TestPeer.
-    if (test_unary_ != nullptr) {
-      return reinterpret_cast<Reactor*>(&default_reactor_);
-    }
-    new (&default_reactor_) Reactor;
-#ifndef NDEBUG
-    bool old = false;
-    assert(default_reactor_used_.compare_exchange_strong(
-        old, true, std::memory_order_relaxed));
-#else
-    default_reactor_used_.store(true, std::memory_order_relaxed);
-#endif
-    return reinterpret_cast<Reactor*>(&default_reactor_);
-  }
-
-  /// Constructors for use by derived classes
-  ServerContextBase();
-  ServerContextBase(gpr_timespec deadline, grpc_metadata_array* arr);
-
-  void set_context_allocator(ContextAllocator* context_allocator) {
-    context_allocator_ = context_allocator;
-  }
-
-  ContextAllocator* context_allocator() const { return context_allocator_; }
-
- private:
-  friend class grpc::testing::InteropServerContextInspector;
-  friend class grpc::testing::ServerContextTestSpouse;
-  friend class grpc::testing::DefaultReactorTestPeer;
-  friend class grpc::ServerInterface;
-  friend class grpc::Server;
-  template <class W, class R>
-  friend class grpc::ServerAsyncReader;
-  template <class W>
-  friend class grpc::ServerAsyncWriter;
-  template <class W>
-  friend class grpc::ServerAsyncResponseWriter;
-  template <class W, class R>
-  friend class grpc::ServerAsyncReaderWriter;
-  template <class R>
-  friend class grpc::ServerReader;
-  template <class W>
-  friend class grpc::ServerWriter;
-  template <class W, class R>
-  friend class grpc::internal::ServerReaderWriterBody;
-  template <class ResponseType>
-  friend void grpc::internal::UnaryRunHandlerHelper(
-      const internal::MethodHandler::HandlerParameter& param, ResponseType* rsp,
-      Status& status);
-  template <class ServiceType, class RequestType, class ResponseType,
-            class BaseRequestType, class BaseResponseType>
-  friend class grpc::internal::RpcMethodHandler;
-  template <class ServiceType, class RequestType, class ResponseType>
-  friend class grpc::internal::ClientStreamingHandler;
-  template <class ServiceType, class RequestType, class ResponseType>
-  friend class grpc::internal::ServerStreamingHandler;
-  template <class Streamer, bool WriteNeeded>
-  friend class grpc::internal::TemplatedBidiStreamingHandler;
-  template <class RequestType, class ResponseType>
-  friend class grpc::internal::CallbackUnaryHandler;
-  template <class RequestType, class ResponseType>
-  friend class grpc::internal::CallbackClientStreamingHandler;
-  template <class RequestType, class ResponseType>
-  friend class grpc::internal::CallbackServerStreamingHandler;
-  template <class RequestType, class ResponseType>
-  friend class grpc::internal::CallbackBidiHandler;
-  template <grpc::StatusCode code>
-  friend class grpc::internal::ErrorMethodHandler;
-  template <class Base>
-  friend class grpc::internal::FinishOnlyReactor;
-  friend class grpc::ClientContext;
-  friend class grpc::GenericServerContext;
-  friend class grpc::GenericCallbackServerContext;
-  friend class grpc::experimental::OrcaServerInterceptor;
-
-  /// Prevent copying.
-  ServerContextBase(const ServerContextBase&);
-  ServerContextBase& operator=(const ServerContextBase&);
-
-  class CompletionOp;
-
-  void BeginCompletionOp(
-      grpc::internal::Call* call, std::function<void(bool)> callback,
-      grpc::internal::ServerCallbackCall* callback_controller);
-  /// Return the tag queued by BeginCompletionOp()
-  grpc::internal::CompletionQueueTag* GetCompletionOpTag();
-
-  void set_call(grpc_call* call) { call_.call = call; }
-
-  void BindDeadlineAndMetadata(gpr_timespec deadline, grpc_metadata_array* arr);
-
-  uint32_t initial_metadata_flags() const { return 0; }
-
-  grpc::experimental::ServerRpcInfo* set_server_rpc_info(
-      const char* method, grpc::internal::RpcMethod::RpcType type,
-      const std::vector<std::unique_ptr<
-          grpc::experimental::ServerInterceptorFactoryInterface>>& creators) {
-    if (!creators.empty()) {
-      rpc_info_ = new grpc::experimental::ServerRpcInfo(this, method, type);
-      rpc_info_->RegisterInterceptors(creators);
-    }
-    return rpc_info_;
-  }
-
-  void set_message_allocator_state(RpcAllocatorState* allocator_state) {
-    message_allocator_state_ = allocator_state;
-  }
-
-  void MaybeMarkCancelledOnRead() {
-    if (g_core_codegen_interface->grpc_call_failed_before_recv_message(
-            call_.call)) {
-      marked_cancelled_.store(true, std::memory_order_release);
-    }
-  }
-
-  void CreateCallMetricRecorder();
-
-  struct CallWrapper {
-    ~CallWrapper();
-
-    grpc_call* call = nullptr;
-  };
-
-  // NOTE: call_ must be the first data member of this object so that its
-  //       destructor is the last to be called, since its destructor may unref
-  //       the underlying core call which holds the arena that may be used to
-  //       hold this object.
-  CallWrapper call_;
-
-  CompletionOp* completion_op_ = nullptr;
-  bool has_notify_when_done_tag_ = false;
-  void* async_notify_when_done_tag_ = nullptr;
-  grpc::internal::CallbackWithSuccessTag completion_tag_;
-
-  gpr_timespec deadline_;
-  grpc::CompletionQueue* cq_ = nullptr;
-  bool sent_initial_metadata_ = false;
-  mutable std::shared_ptr<const grpc::AuthContext> auth_context_;
-  mutable grpc::internal::MetadataMap client_metadata_;
-  std::multimap<TString, TString> initial_metadata_;
-  std::multimap<TString, TString> trailing_metadata_;
-
-  bool compression_level_set_ = false;
-  grpc_compression_level compression_level_;
-  grpc_compression_algorithm compression_algorithm_;
-
-  grpc::internal::CallOpSet<grpc::internal::CallOpSendInitialMetadata,
-                            grpc::internal::CallOpSendMessage>
-      pending_ops_;
-  bool has_pending_ops_ = false;
-
-  grpc::experimental::ServerRpcInfo* rpc_info_ = nullptr;
-  RpcAllocatorState* message_allocator_state_ = nullptr;
-  ContextAllocator* context_allocator_ = nullptr;
-  experimental::CallMetricRecorder* call_metric_recorder_ = nullptr;
-
-  class Reactor : public grpc::ServerUnaryReactor {
-   public:
-    void OnCancel() override {}
-    void OnDone() override {}
-    // Override InternalInlineable for this class since its reactions are
-    // trivial and thus do not need to be run from the executor (triggering a
-    // thread hop). This should only be used by internal reactors (thus the
-    // name) and not by user application code.
-    bool InternalInlineable() override { return true; }
-  };
-
-  void SetupTestDefaultReactor(std::function<void(grpc::Status)> func) {
-    // NOLINTNEXTLINE(modernize-make-unique)
-    test_unary_.reset(new TestServerCallbackUnary(this, std::move(func)));
-  }
-  bool test_status_set() const {
-    return (test_unary_ != nullptr) && test_unary_->status_set();
-  }
-  grpc::Status test_status() const { return test_unary_->status(); }
-
-  class TestServerCallbackUnary : public grpc::ServerCallbackUnary {
-   public:
-    TestServerCallbackUnary(ServerContextBase* ctx,
-                            std::function<void(grpc::Status)> func)
-        : reactor_(ctx->DefaultReactor()), func_(std::move(func)) {
-      this->BindReactor(reactor_);
-    }
-    void Finish(grpc::Status s) override {
-      status_ = s;
-      func_(std::move(s));
-      status_set_.store(true, std::memory_order_release);
-    }
-    void SendInitialMetadata() override {}
-
-    bool status_set() const {
-      return status_set_.load(std::memory_order_acquire);
-    }
-    grpc::Status status() const { return status_; }
-
-   private:
-    void CallOnDone() override {}
-    grpc::internal::ServerReactor* reactor() override { return reactor_; }
-
-    grpc::ServerUnaryReactor* const reactor_;
-    std::atomic_bool status_set_{false};
-    grpc::Status status_;
-    const std::function<void(grpc::Status s)> func_;
-  };
-
-  typename std::aligned_storage<sizeof(Reactor), alignof(Reactor)>::type
-      default_reactor_;
-  std::atomic_bool default_reactor_used_{false};
-
-  std::atomic_bool marked_cancelled_{false};
-
-  std::unique_ptr<TestServerCallbackUnary> test_unary_;
-};
-
-/// A ServerContext or CallbackServerContext allows the code implementing a
-/// service handler to:
-///
-/// - Add custom initial and trailing metadata key-value pairs that will
-///   propagated to the client side.
-/// - Control call settings such as compression and authentication.
-/// - Access metadata coming from the client.
-/// - Get performance metrics (ie, census).
-///
-/// Context settings are only relevant to the call handler they are supplied to,
-/// that is to say, they aren't sticky across multiple calls. Some of these
-/// settings, such as the compression options, can be made persistent at server
-/// construction time by specifying the appropriate \a ChannelArguments
-/// to a \a grpc::ServerBuilder, via \a ServerBuilder::AddChannelArgument.
-///
-/// \warning ServerContext instances should \em not be reused across rpcs.
-class ServerContext : public ServerContextBase {
- public:
-  ServerContext() {}  // for async calls
-
-  using ServerContextBase::AddInitialMetadata;
-  using ServerContextBase::AddTrailingMetadata;
-  using ServerContextBase::auth_context;
-  using ServerContextBase::c_call;
-  using ServerContextBase::census_context;
-  using ServerContextBase::client_metadata;
-  using ServerContextBase::compression_algorithm;
-  using ServerContextBase::compression_level;
-  using ServerContextBase::compression_level_set;
-  using ServerContextBase::deadline;
-  using ServerContextBase::IsCancelled;
-  using ServerContextBase::peer;
-  using ServerContextBase::raw_deadline;
-  using ServerContextBase::set_compression_algorithm;
-  using ServerContextBase::set_compression_level;
-  using ServerContextBase::SetLoadReportingCosts;
-  using ServerContextBase::TryCancel;
-
-  // Sync/CQ-based Async ServerContext only
-  using ServerContextBase::AsyncNotifyWhenDone;
-
- private:
-  // Constructor for internal use by server only
-  friend class grpc::Server;
-  ServerContext(gpr_timespec deadline, grpc_metadata_array* arr)
-      : ServerContextBase(deadline, arr) {}
-
-  // CallbackServerContext only
-  using ServerContextBase::DefaultReactor;
-  using ServerContextBase::GetRpcAllocatorState;
-
-  /// Prevent copying.
-  ServerContext(const ServerContext&) = delete;
-  ServerContext& operator=(const ServerContext&) = delete;
-};
-
-class CallbackServerContext : public ServerContextBase {
- public:
-  /// Public constructors are for direct use only by mocking tests. In practice,
-  /// these objects will be owned by the library.
-  CallbackServerContext() {}
-
-  using ServerContextBase::AddInitialMetadata;
-  using ServerContextBase::AddTrailingMetadata;
-  using ServerContextBase::auth_context;
-  using ServerContextBase::c_call;
-  using ServerContextBase::census_context;
-  using ServerContextBase::client_metadata;
-  using ServerContextBase::compression_algorithm;
-  using ServerContextBase::compression_level;
-  using ServerContextBase::compression_level_set;
-  using ServerContextBase::context_allocator;
-  using ServerContextBase::deadline;
-  using ServerContextBase::IsCancelled;
-  using ServerContextBase::peer;
-  using ServerContextBase::raw_deadline;
-  using ServerContextBase::set_compression_algorithm;
-  using ServerContextBase::set_compression_level;
-  using ServerContextBase::set_context_allocator;
-  using ServerContextBase::SetLoadReportingCosts;
-  using ServerContextBase::TryCancel;
-
-  // CallbackServerContext only
-  using ServerContextBase::DefaultReactor;
-  using ServerContextBase::GetRpcAllocatorState;
-
- private:
-  // Sync/CQ-based Async ServerContext only
-  using ServerContextBase::AsyncNotifyWhenDone;
-
-  /// Prevent copying.
-  CallbackServerContext(const CallbackServerContext&) = delete;
-  CallbackServerContext& operator=(const CallbackServerContext&) = delete;
-};
-
-/// A CallbackServerContext allows users to use the contents of the
-/// CallbackServerContext or GenericCallbackServerContext structure for the
-/// callback API.
-/// The library will invoke the allocator any time a new call is initiated.
-/// and call the Release method after the server OnDone.
-class ContextAllocator {
- public:
-  virtual ~ContextAllocator() {}
-
-  virtual CallbackServerContext* NewCallbackServerContext() { return nullptr; }
-
-  virtual GenericCallbackServerContext* NewGenericCallbackServerContext() {
-    return nullptr;
-  }
-
-  virtual void Release(CallbackServerContext*) {}
-
-  virtual void Release(GenericCallbackServerContext*) {}
-};
-
-}  // namespace grpc
-
-static_assert(
-    std::is_base_of<grpc::ServerContextBase, grpc::ServerContext>::value,
-    "improper base class");
-static_assert(std::is_base_of<grpc::ServerContextBase,
-                              grpc::CallbackServerContext>::value,
-              "improper base class");
-static_assert(sizeof(grpc::ServerContextBase) == sizeof(grpc::ServerContext),
-              "wrong size");
-static_assert(sizeof(grpc::ServerContextBase) ==
-                  sizeof(grpc::CallbackServerContext),
-              "wrong size");
-
-#endif  // GRPCPP_IMPL_CODEGEN_SERVER_CONTEXT_H
diff --git a/contrib/libs/grpc/include/grpcpp/impl/codegen/server_interceptor.h b/contrib/libs/grpc/include/grpcpp/impl/codegen/server_interceptor.h
deleted file mode 100644
index 3a8fd52acb..0000000000
--- a/contrib/libs/grpc/include/grpcpp/impl/codegen/server_interceptor.h
+++ /dev/null
@@ -1,141 +0,0 @@
-/*
- *
- * Copyright 2018 gRPC authors.
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
- */
-
-#ifndef GRPCPP_IMPL_CODEGEN_SERVER_INTERCEPTOR_H
-#define GRPCPP_IMPL_CODEGEN_SERVER_INTERCEPTOR_H
-
-// IWYU pragma: private, include <grpcpp/support/server_interceptor.h>
-
-#include <atomic>
-#include <vector>
-
-#include <grpcpp/impl/codegen/interceptor.h>
-#include <grpcpp/impl/codegen/rpc_method.h>
-#include <grpcpp/impl/codegen/string_ref.h>
-
-namespace grpc {
-class ServerContextBase;
-namespace internal {
-class InterceptorBatchMethodsImpl;
-}
-
-namespace experimental {
-class ServerRpcInfo;
-
-// A factory interface for creation of server interceptors. A vector of
-// factories can be provided to ServerBuilder which will be used to create a new
-// vector of server interceptors per RPC. Server interceptor authors should
-// create a subclass of ServerInterceptorFactorInterface which creates objects
-// of their interceptors.
-class ServerInterceptorFactoryInterface {
- public:
-  virtual ~ServerInterceptorFactoryInterface() {}
-  // Returns a pointer to an Interceptor object on successful creation, nullptr
-  // otherwise. If nullptr is returned, this server interceptor factory is
-  // ignored for the purposes of that RPC.
-  virtual Interceptor* CreateServerInterceptor(ServerRpcInfo* info) = 0;
-};
-
-/// ServerRpcInfo represents the state of a particular RPC as it
-/// appears to an interceptor. It is created and owned by the library and
-/// passed to the CreateServerInterceptor method of the application's
-/// ServerInterceptorFactoryInterface implementation
-class ServerRpcInfo {
- public:
-  /// Type categorizes RPCs by unary or streaming type
-  enum class Type { UNARY, CLIENT_STREAMING, SERVER_STREAMING, BIDI_STREAMING };
-
-  ~ServerRpcInfo() {}
-
-  // Delete all copy and move constructors and assignments
-  ServerRpcInfo(const ServerRpcInfo&) = delete;
-  ServerRpcInfo& operator=(const ServerRpcInfo&) = delete;
-  ServerRpcInfo(ServerRpcInfo&&) = delete;
-  ServerRpcInfo& operator=(ServerRpcInfo&&) = delete;
-
-  // Getter methods
-
-  /// Return the fully-specified method name
-  const char* method() const { return method_; }
-
-  /// Return the type of the RPC (unary or a streaming flavor)
-  Type type() const { return type_; }
-
-  /// Return a pointer to the underlying ServerContext structure associated
-  /// with the RPC to support features that apply to it
-  ServerContextBase* server_context() { return ctx_; }
-
- private:
-  static_assert(Type::UNARY ==
-                    static_cast<Type>(internal::RpcMethod::NORMAL_RPC),
-                "violated expectation about Type enum");
-  static_assert(Type::CLIENT_STREAMING ==
-                    static_cast<Type>(internal::RpcMethod::CLIENT_STREAMING),
-                "violated expectation about Type enum");
-  static_assert(Type::SERVER_STREAMING ==
-                    static_cast<Type>(internal::RpcMethod::SERVER_STREAMING),
-                "violated expectation about Type enum");
-  static_assert(Type::BIDI_STREAMING ==
-                    static_cast<Type>(internal::RpcMethod::BIDI_STREAMING),
-                "violated expectation about Type enum");
-
-  ServerRpcInfo(ServerContextBase* ctx, const char* method,
-                internal::RpcMethod::RpcType type)
-      : ctx_(ctx), method_(method), type_(static_cast<Type>(type)) {}
-
-  // Runs interceptor at pos \a pos.
-  void RunInterceptor(
-      experimental::InterceptorBatchMethods* interceptor_methods, size_t pos) {
-    GPR_CODEGEN_ASSERT(pos < interceptors_.size());
-    interceptors_[pos]->Intercept(interceptor_methods);
-  }
-
-  void RegisterInterceptors(
-      const std::vector<
-          std::unique_ptr<experimental::ServerInterceptorFactoryInterface>>&
-          creators) {
-    for (const auto& creator : creators) {
-      auto* interceptor = creator->CreateServerInterceptor(this);
-      if (interceptor != nullptr) {
-        interceptors_.push_back(
-            std::unique_ptr<experimental::Interceptor>(interceptor));
-      }
-    }
-  }
-
-  void Ref() { ref_.fetch_add(1, std::memory_order_relaxed); }
-  void Unref() {
-    if (GPR_UNLIKELY(ref_.fetch_sub(1, std::memory_order_acq_rel) == 1)) {
-      delete this;
-    }
-  }
-
-  ServerContextBase* ctx_ = nullptr;
-  const char* method_ = nullptr;
-  const Type type_;
-  std::atomic<intptr_t> ref_{1};
-  std::vector<std::unique_ptr<experimental::Interceptor>> interceptors_;
-
-  friend class internal::InterceptorBatchMethodsImpl;
-  friend class grpc::ServerContextBase;
-};
-
-}  // namespace experimental
-}  // namespace grpc
-
-#endif  // GRPCPP_IMPL_CODEGEN_SERVER_INTERCEPTOR_H
diff --git a/contrib/libs/grpc/include/grpcpp/impl/codegen/service_type.h b/contrib/libs/grpc/include/grpcpp/impl/codegen/service_type.h
deleted file mode 100644
index 88bcb4a9e4..0000000000
--- a/contrib/libs/grpc/include/grpcpp/impl/codegen/service_type.h
+++ /dev/null
@@ -1,238 +0,0 @@
-/*
- *
- * Copyright 2015 gRPC authors.
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
- */
-
-#ifndef GRPCPP_IMPL_CODEGEN_SERVICE_TYPE_H
-#define GRPCPP_IMPL_CODEGEN_SERVICE_TYPE_H
-
-// IWYU pragma: private, include <grpcpp/impl/service_type.h>
-
-#include <grpcpp/impl/codegen/config.h>
-#include <grpcpp/impl/codegen/core_codegen_interface.h>
-#include <grpcpp/impl/codegen/rpc_service_method.h>
-#include <grpcpp/impl/codegen/serialization_traits.h>
-#include <grpcpp/impl/codegen/server_interface.h>
-#include <grpcpp/impl/codegen/status.h>
-
-namespace grpc {
-
-class CompletionQueue;
-class ServerContext;
-class ServerInterface;
-
-namespace internal {
-class Call;
-class ServerAsyncStreamingInterface {
- public:
-  virtual ~ServerAsyncStreamingInterface() {}
-
-  /// Request notification of the sending of initial metadata to the client.
-  /// Completion will be notified by \a tag on the associated completion
-  /// queue. This call is optional, but if it is used, it cannot be used
-  /// concurrently with or after the \a Finish method.
-  ///
-  /// \param[in] tag Tag identifying this request.
-  virtual void SendInitialMetadata(void* tag) = 0;
-
- private:
-  friend class grpc::ServerInterface;
-  virtual void BindCall(Call* call) = 0;
-};
-}  // namespace internal
-
-/// Desriptor of an RPC service and its various RPC methods
-class Service {
- public:
-  Service() : server_(nullptr) {}
-  virtual ~Service() {}
-
-  bool has_async_methods() const {
-    for (const auto& method : methods_) {
-      if (method && method->handler() == nullptr) {
-        return true;
-      }
-    }
-    return false;
-  }
-
-  bool has_synchronous_methods() const {
-    for (const auto& method : methods_) {
-      if (method &&
-          method->api_type() == internal::RpcServiceMethod::ApiType::SYNC) {
-        return true;
-      }
-    }
-    return false;
-  }
-
-  bool has_callback_methods() const {
-    for (const auto& method : methods_) {
-      if (method && (method->api_type() ==
-                         internal::RpcServiceMethod::ApiType::CALL_BACK ||
-                     method->api_type() ==
-                         internal::RpcServiceMethod::ApiType::RAW_CALL_BACK)) {
-        return true;
-      }
-    }
-    return false;
-  }
-
-  bool has_generic_methods() const {
-    for (const auto& method : methods_) {
-      if (method == nullptr) {
-        return true;
-      }
-    }
-    return false;
-  }
-
- protected:
-  template <class Message>
-  void RequestAsyncUnary(int index, grpc::ServerContext* context,
-                         Message* request,
-                         internal::ServerAsyncStreamingInterface* stream,
-                         grpc::CompletionQueue* call_cq,
-                         grpc::ServerCompletionQueue* notification_cq,
-                         void* tag) {
-    // Typecast the index to size_t for indexing into a vector
-    // while preserving the API that existed before a compiler
-    // warning was first seen (grpc/grpc#11664)
-    size_t idx = static_cast<size_t>(index);
-    server_->RequestAsyncCall(methods_[idx].get(), context, stream, call_cq,
-                              notification_cq, tag, request);
-  }
-  void RequestAsyncClientStreaming(
-      int index, grpc::ServerContext* context,
-      internal::ServerAsyncStreamingInterface* stream,
-      grpc::CompletionQueue* call_cq,
-      grpc::ServerCompletionQueue* notification_cq, void* tag) {
-    size_t idx = static_cast<size_t>(index);
-    server_->RequestAsyncCall(methods_[idx].get(), context, stream, call_cq,
-                              notification_cq, tag);
-  }
-  template <class Message>
-  void RequestAsyncServerStreaming(
-      int index, grpc::ServerContext* context, Message* request,
-      internal::ServerAsyncStreamingInterface* stream,
-      grpc::CompletionQueue* call_cq,
-      grpc::ServerCompletionQueue* notification_cq, void* tag) {
-    size_t idx = static_cast<size_t>(index);
-    server_->RequestAsyncCall(methods_[idx].get(), context, stream, call_cq,
-                              notification_cq, tag, request);
-  }
-  void RequestAsyncBidiStreaming(
-      int index, grpc::ServerContext* context,
-      internal::ServerAsyncStreamingInterface* stream,
-      grpc::CompletionQueue* call_cq,
-      grpc::ServerCompletionQueue* notification_cq, void* tag) {
-    size_t idx = static_cast<size_t>(index);
-    server_->RequestAsyncCall(methods_[idx].get(), context, stream, call_cq,
-                              notification_cq, tag);
-  }
-
-  void AddMethod(internal::RpcServiceMethod* method) {
-    methods_.emplace_back(method);
-  }
-
-  void MarkMethodAsync(int index) {
-    // This does not have to be a hard error, however no one has approached us
-    // with a use case yet. Please file an issue if you believe you have one.
-    size_t idx = static_cast<size_t>(index);
-    GPR_CODEGEN_ASSERT(
-        methods_[idx].get() != nullptr &&
-        "Cannot mark the method as 'async' because it has already been "
-        "marked as 'generic'.");
-    methods_[idx]->SetServerApiType(internal::RpcServiceMethod::ApiType::ASYNC);
-  }
-
-  void MarkMethodRaw(int index) {
-    // This does not have to be a hard error, however no one has approached us
-    // with a use case yet. Please file an issue if you believe you have one.
-    size_t idx = static_cast<size_t>(index);
-    GPR_CODEGEN_ASSERT(methods_[idx].get() != nullptr &&
-                       "Cannot mark the method as 'raw' because it has already "
-                       "been marked as 'generic'.");
-    methods_[idx]->SetServerApiType(internal::RpcServiceMethod::ApiType::RAW);
-  }
-
-  void MarkMethodGeneric(int index) {
-    // This does not have to be a hard error, however no one has approached us
-    // with a use case yet. Please file an issue if you believe you have one.
-    size_t idx = static_cast<size_t>(index);
-    GPR_CODEGEN_ASSERT(
-        methods_[idx]->handler() != nullptr &&
-        "Cannot mark the method as 'generic' because it has already been "
-        "marked as 'async' or 'raw'.");
-    methods_[idx].reset();
-  }
-
-  void MarkMethodStreamed(int index, internal::MethodHandler* streamed_method) {
-    // This does not have to be a hard error, however no one has approached us
-    // with a use case yet. Please file an issue if you believe you have one.
-    size_t idx = static_cast<size_t>(index);
-    GPR_CODEGEN_ASSERT(methods_[idx] && methods_[idx]->handler() &&
-                       "Cannot mark an async or generic method Streamed");
-    methods_[idx]->SetHandler(streamed_method);
-
-    // From the server's point of view, streamed unary is a special
-    // case of BIDI_STREAMING that has 1 read and 1 write, in that order,
-    // and split server-side streaming is BIDI_STREAMING with 1 read and
-    // any number of writes, in that order.
-    methods_[idx]->SetMethodType(internal::RpcMethod::BIDI_STREAMING);
-  }
-
-  void MarkMethodCallback(int index, internal::MethodHandler* handler) {
-    // This does not have to be a hard error, however no one has approached us
-    // with a use case yet. Please file an issue if you believe you have one.
-    size_t idx = static_cast<size_t>(index);
-    GPR_CODEGEN_ASSERT(
-        methods_[idx].get() != nullptr &&
-        "Cannot mark the method as 'callback' because it has already been "
-        "marked as 'generic'.");
-    methods_[idx]->SetHandler(handler);
-    methods_[idx]->SetServerApiType(
-        internal::RpcServiceMethod::ApiType::CALL_BACK);
-  }
-
-  void MarkMethodRawCallback(int index, internal::MethodHandler* handler) {
-    // This does not have to be a hard error, however no one has approached us
-    // with a use case yet. Please file an issue if you believe you have one.
-    size_t idx = static_cast<size_t>(index);
-    GPR_CODEGEN_ASSERT(
-        methods_[idx].get() != nullptr &&
-        "Cannot mark the method as 'raw callback' because it has already "
-        "been marked as 'generic'.");
-    methods_[idx]->SetHandler(handler);
-    methods_[idx]->SetServerApiType(
-        internal::RpcServiceMethod::ApiType::RAW_CALL_BACK);
-  }
-
-  internal::MethodHandler* GetHandler(int index) {
-    size_t idx = static_cast<size_t>(index);
-    return methods_[idx]->handler();
-  }
-
- private:
-  friend class Server;
-  friend class ServerInterface;
-  ServerInterface* server_;
-  std::vector<std::unique_ptr<internal::RpcServiceMethod>> methods_;
-};
-
-}  // namespace grpc
-
-#endif  // GRPCPP_IMPL_CODEGEN_SERVICE_TYPE_H
diff --git a/contrib/libs/grpc/include/grpcpp/impl/codegen/slice.h b/contrib/libs/grpc/include/grpcpp/impl/codegen/slice.h
deleted file mode 100644
index 3de44c8f90..0000000000
--- a/contrib/libs/grpc/include/grpcpp/impl/codegen/slice.h
+++ /dev/null
@@ -1,156 +0,0 @@
-/*
- *
- * Copyright 2015 gRPC authors.
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
- */
-
-#ifndef GRPCPP_IMPL_CODEGEN_SLICE_H
-#define GRPCPP_IMPL_CODEGEN_SLICE_H
-
-// IWYU pragma: private, include <grpcpp/support/slice.h>
-
-#include <grpc/impl/codegen/slice.h>
-#include <grpcpp/impl/codegen/config.h>
-#include <grpcpp/impl/codegen/core_codegen_interface.h>
-#include <grpcpp/impl/codegen/string_ref.h>
-
-namespace grpc {
-
-/// A wrapper around \a grpc_slice.
-///
-/// A slice represents a contiguous reference counted array of bytes.
-/// It is cheap to take references to a slice, and it is cheap to create a
-/// slice pointing to a subset of another slice.
-class Slice final {
- public:
-  /// Construct an empty slice.
-  Slice() : slice_(g_core_codegen_interface->grpc_empty_slice()) {}
-  /// Destructor - drops one reference.
-  ~Slice() { g_core_codegen_interface->grpc_slice_unref(slice_); }
-
-  enum AddRef { ADD_REF };
-  /// Construct a slice from \a slice, adding a reference.
-  Slice(grpc_slice slice, AddRef)
-      : slice_(g_core_codegen_interface->grpc_slice_ref(slice)) {}
-
-  enum StealRef { STEAL_REF };
-  /// Construct a slice from \a slice, stealing a reference.
-  Slice(grpc_slice slice, StealRef) : slice_(slice) {}
-
-  /// Allocate a slice of specified size
-  explicit Slice(size_t len)
-      : slice_(g_core_codegen_interface->grpc_slice_malloc(len)) {}
-
-  /// Construct a slice from a copied buffer
-  Slice(const void* buf, size_t len)
-      : slice_(g_core_codegen_interface->grpc_slice_from_copied_buffer(
-            reinterpret_cast<const char*>(buf), len)) {}
-
-  /// Construct a slice from a copied string
-  /* NOLINTNEXTLINE(google-explicit-constructor) */
-  Slice(const TString& str)
-      : slice_(g_core_codegen_interface->grpc_slice_from_copied_buffer(
-            str.c_str(), str.length())) {}
-
-  enum StaticSlice { STATIC_SLICE };
-
-  /// Construct a slice from a static buffer
-  Slice(const void* buf, size_t len, StaticSlice)
-      : slice_(g_core_codegen_interface->grpc_slice_from_static_buffer(
-            reinterpret_cast<const char*>(buf), len)) {}
-
-  /// Copy constructor, adds a reference.
-  Slice(const Slice& other)
-      : slice_(g_core_codegen_interface->grpc_slice_ref(other.slice_)) {}
-
-  /// Move constructor, steals a reference.
-  Slice(Slice&& other) noexcept : slice_(other.slice_) {
-    other.slice_ = g_core_codegen_interface->grpc_empty_slice();
-  }
-
-  /// Assignment, reference count is unchanged.
-  Slice& operator=(Slice other) {
-    std::swap(slice_, other.slice_);
-    return *this;
-  }
-
-  /// Create a slice pointing at some data. Calls malloc to allocate a refcount
-  /// for the object, and arranges that destroy will be called with the
-  /// user data pointer passed in at destruction. Can be the same as buf or
-  /// different (e.g., if data is part of a larger structure that must be
-  /// destroyed when the data is no longer needed)
-  Slice(void* buf, size_t len, void (*destroy)(void*), void* user_data)
-      : slice_(g_core_codegen_interface->grpc_slice_new_with_user_data(
-            buf, len, destroy, user_data)) {}
-
-  /// Specialization of above for common case where buf == user_data
-  Slice(void* buf, size_t len, void (*destroy)(void*))
-      : Slice(buf, len, destroy, buf) {}
-
-  /// Similar to the above but has a destroy that also takes slice length
-  Slice(void* buf, size_t len, void (*destroy)(void*, size_t))
-      : slice_(g_core_codegen_interface->grpc_slice_new_with_len(buf, len,
-                                                                 destroy)) {}
-
-  /// Byte size.
-  size_t size() const { return GRPC_SLICE_LENGTH(slice_); }
-
-  /// Raw pointer to the beginning (first element) of the slice.
-  const uint8_t* begin() const { return GRPC_SLICE_START_PTR(slice_); }
-
-  /// Raw pointer to the end (one byte \em past the last element) of the slice.
-  const uint8_t* end() const { return GRPC_SLICE_END_PTR(slice_); }
-
-  /// Returns a substring of the `slice` as another slice.
-  Slice sub(size_t begin, size_t end) const {
-    return Slice(g_core_codegen_interface->grpc_slice_sub(slice_, begin, end),
-                 STEAL_REF);
-  }
-
-  /// Raw C slice. Caller needs to call grpc_slice_unref when done.
-  grpc_slice c_slice() const {
-    return g_core_codegen_interface->grpc_slice_ref(slice_);
-  }
-
- private:
-  friend class ByteBuffer;
-
-  grpc_slice slice_;
-};
-
-inline grpc::string_ref StringRefFromSlice(const grpc_slice* slice) {
-  return grpc::string_ref(
-      reinterpret_cast<const char*>(GRPC_SLICE_START_PTR(*slice)),
-      GRPC_SLICE_LENGTH(*slice));
-}
-
-inline TString StringFromCopiedSlice(grpc_slice slice) {
-  return TString(reinterpret_cast<char*>(GRPC_SLICE_START_PTR(slice)),
-                     GRPC_SLICE_LENGTH(slice));
-}
-
-inline grpc_slice SliceReferencingString(const TString& str) {
-  return g_core_codegen_interface->grpc_slice_from_static_buffer(str.data(),
-                                                                 str.length());
-}
-
-inline grpc_slice SliceFromCopiedString(const TString& str) {
-  return g_core_codegen_interface->grpc_slice_from_copied_buffer(str.data(),
-                                                                 str.length());
-}
-
-}  // namespace grpc
-
-#endif  // GRPCPP_IMPL_CODEGEN_SLICE_H
diff --git a/contrib/libs/grpc/include/grpcpp/impl/codegen/status.h b/contrib/libs/grpc/include/grpcpp/impl/codegen/status.h
index a3ab974a93..0f69185968 100644
--- a/contrib/libs/grpc/include/grpcpp/impl/codegen/status.h
+++ b/contrib/libs/grpc/include/grpcpp/impl/codegen/status.h
@@ -1,141 +1,27 @@
-/*
- *
- * Copyright 2016 gRPC authors.
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
- */
+//
+//
+// Copyright 2016 gRPC authors.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+//
 
 #ifndef GRPCPP_IMPL_CODEGEN_STATUS_H
 #define GRPCPP_IMPL_CODEGEN_STATUS_H
 
-// IWYU pragma: private, include <grpcpp/support/status.h>
+// IWYU pragma: private
 
-#include <grpc/impl/codegen/port_platform.h>
-
-#include <grpc/impl/codegen/status.h>
-#include <grpcpp/impl/codegen/config.h>
-#include <grpcpp/impl/codegen/status_code_enum.h>
-
-namespace grpc {
-
-/// Did it work? If it didn't, why?
-///
-/// See \a grpc::StatusCode for details on the available code and their meaning.
-class GRPC_MUST_USE_RESULT_WHEN_USE_STRICT_WARNING Status {
- public:
-  /// Construct an OK instance.
-  Status() : code_(StatusCode::OK) {
-    // Static assertions to make sure that the C++ API value correctly
-    // maps to the core surface API value
-    static_assert(StatusCode::OK == static_cast<StatusCode>(GRPC_STATUS_OK),
-                  "Mismatched status code");
-    static_assert(
-        StatusCode::CANCELLED == static_cast<StatusCode>(GRPC_STATUS_CANCELLED),
-        "Mismatched status code");
-    static_assert(
-        StatusCode::UNKNOWN == static_cast<StatusCode>(GRPC_STATUS_UNKNOWN),
-        "Mismatched status code");
-    static_assert(StatusCode::INVALID_ARGUMENT ==
-                      static_cast<StatusCode>(GRPC_STATUS_INVALID_ARGUMENT),
-                  "Mismatched status code");
-    static_assert(StatusCode::DEADLINE_EXCEEDED ==
-                      static_cast<StatusCode>(GRPC_STATUS_DEADLINE_EXCEEDED),
-                  "Mismatched status code");
-    static_assert(
-        StatusCode::NOT_FOUND == static_cast<StatusCode>(GRPC_STATUS_NOT_FOUND),
-        "Mismatched status code");
-    static_assert(StatusCode::ALREADY_EXISTS ==
-                      static_cast<StatusCode>(GRPC_STATUS_ALREADY_EXISTS),
-                  "Mismatched status code");
-    static_assert(StatusCode::PERMISSION_DENIED ==
-                      static_cast<StatusCode>(GRPC_STATUS_PERMISSION_DENIED),
-                  "Mismatched status code");
-    static_assert(StatusCode::UNAUTHENTICATED ==
-                      static_cast<StatusCode>(GRPC_STATUS_UNAUTHENTICATED),
-                  "Mismatched status code");
-    static_assert(StatusCode::RESOURCE_EXHAUSTED ==
-                      static_cast<StatusCode>(GRPC_STATUS_RESOURCE_EXHAUSTED),
-                  "Mismatched status code");
-    static_assert(StatusCode::FAILED_PRECONDITION ==
-                      static_cast<StatusCode>(GRPC_STATUS_FAILED_PRECONDITION),
-                  "Mismatched status code");
-    static_assert(
-        StatusCode::ABORTED == static_cast<StatusCode>(GRPC_STATUS_ABORTED),
-        "Mismatched status code");
-    static_assert(StatusCode::OUT_OF_RANGE ==
-                      static_cast<StatusCode>(GRPC_STATUS_OUT_OF_RANGE),
-                  "Mismatched status code");
-    static_assert(StatusCode::UNIMPLEMENTED ==
-                      static_cast<StatusCode>(GRPC_STATUS_UNIMPLEMENTED),
-                  "Mismatched status code");
-    static_assert(
-        StatusCode::INTERNAL == static_cast<StatusCode>(GRPC_STATUS_INTERNAL),
-        "Mismatched status code");
-    static_assert(StatusCode::UNAVAILABLE ==
-                      static_cast<StatusCode>(GRPC_STATUS_UNAVAILABLE),
-                  "Mismatched status code");
-    static_assert(
-        StatusCode::DATA_LOSS == static_cast<StatusCode>(GRPC_STATUS_DATA_LOSS),
-        "Mismatched status code");
-  }
-
-  /// Construct an instance with associated \a code and \a error_message.
-  /// It is an error to construct an OK status with non-empty \a error_message.
-  /// Note that \a message is intentionally accepted as a const reference
-  /// instead of a value (which results in a copy instead of a move) to allow
-  /// for easy transition to y_absl::Status in the future which accepts an
-  /// y_absl::string_view as a parameter.
-  Status(StatusCode code, const TString& error_message)
-      : code_(code), error_message_(error_message) {}
-
-  /// Construct an instance with \a code,  \a error_message and
-  /// \a error_details. It is an error to construct an OK status with non-empty
-  /// \a error_message and/or \a error_details.
-  Status(StatusCode code, const TString& error_message,
-         const TString& error_details)
-      : code_(code),
-        error_message_(error_message),
-        binary_error_details_(error_details) {}
-
-  // Pre-defined special status objects.
-  /// An OK pre-defined instance.
-  static const Status& OK;
-  /// A CANCELLED pre-defined instance.
-  static const Status& CANCELLED;
-
-  /// Return the instance's error code.
-  StatusCode error_code() const { return code_; }
-  /// Return the instance's error message.
-  TString error_message() const { return error_message_; }
-  /// Return the (binary) error details.
-  // Usually it contains a serialized google.rpc.Status proto.
-  TString error_details() const { return binary_error_details_; }
-
-  /// Is the status OK?
-  bool ok() const { return code_ == StatusCode::OK; }
-
-  // Ignores any errors. This method does nothing except potentially suppress
-  // complaints from any tools that are checking that errors are not dropped on
-  // the floor.
-  void IgnoreError() const {}
-
- private:
-  StatusCode code_;
-  TString error_message_;
-  TString binary_error_details_;
-};
-
-}  // namespace grpc
+/// TODO(chengyuc): Remove this file after solving compatibility.
+#include <grpcpp/support/status.h>
 
 #endif  // GRPCPP_IMPL_CODEGEN_STATUS_H
diff --git a/contrib/libs/grpc/include/grpcpp/impl/codegen/status_code_enum.h b/contrib/libs/grpc/include/grpcpp/impl/codegen/status_code_enum.h
index 6950eab57d..6ed1d8d8cb 100644
--- a/contrib/libs/grpc/include/grpcpp/impl/codegen/status_code_enum.h
+++ b/contrib/libs/grpc/include/grpcpp/impl/codegen/status_code_enum.h
@@ -1,145 +1,27 @@
-/*
- *
- * Copyright 2016 gRPC authors.
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
- */
+//
+//
+// Copyright 2016 gRPC authors.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+//
 
 #ifndef GRPCPP_IMPL_CODEGEN_STATUS_CODE_ENUM_H
 #define GRPCPP_IMPL_CODEGEN_STATUS_CODE_ENUM_H
 
 // IWYU pragma: private, include <grpcpp/support/status.h>
 
-namespace grpc {
-
-enum StatusCode {
-  /// Not an error; returned on success.
-  OK = 0,
-
-  /// The operation was cancelled (typically by the caller).
-  CANCELLED = 1,
-
-  /// Unknown error. An example of where this error may be returned is if a
-  /// Status value received from another address space belongs to an error-space
-  /// that is not known in this address space. Also errors raised by APIs that
-  /// do not return enough error information may be converted to this error.
-  UNKNOWN = 2,
-
-  /// Client specified an invalid argument. Note that this differs from
-  /// FAILED_PRECONDITION. INVALID_ARGUMENT indicates arguments that are
-  /// problematic regardless of the state of the system (e.g., a malformed file
-  /// name).
-  INVALID_ARGUMENT = 3,
-
-  /// Deadline expired before operation could complete. For operations that
-  /// change the state of the system, this error may be returned even if the
-  /// operation has completed successfully. For example, a successful response
-  /// from a server could have been delayed long enough for the deadline to
-  /// expire.
-  DEADLINE_EXCEEDED = 4,
-
-  /// Some requested entity (e.g., file or directory) was not found.
-  NOT_FOUND = 5,
-
-  /// Some entity that we attempted to create (e.g., file or directory) already
-  /// exists.
-  ALREADY_EXISTS = 6,
-
-  /// The caller does not have permission to execute the specified operation.
-  /// PERMISSION_DENIED must not be used for rejections caused by exhausting
-  /// some resource (use RESOURCE_EXHAUSTED instead for those errors).
-  /// PERMISSION_DENIED must not be used if the caller can not be identified
-  /// (use UNAUTHENTICATED instead for those errors).
-  PERMISSION_DENIED = 7,
-
-  /// The request does not have valid authentication credentials for the
-  /// operation.
-  UNAUTHENTICATED = 16,
-
-  /// Some resource has been exhausted, perhaps a per-user quota, or perhaps the
-  /// entire file system is out of space.
-  RESOURCE_EXHAUSTED = 8,
-
-  /// Operation was rejected because the system is not in a state required for
-  /// the operation's execution. For example, directory to be deleted may be
-  /// non-empty, an rmdir operation is applied to a non-directory, etc.
-  ///
-  /// A litmus test that may help a service implementor in deciding
-  /// between FAILED_PRECONDITION, ABORTED, and UNAVAILABLE:
-  ///  (a) Use UNAVAILABLE if the client can retry just the failing call.
-  ///  (b) Use ABORTED if the client should retry at a higher-level
-  ///      (e.g., restarting a read-modify-write sequence).
-  ///  (c) Use FAILED_PRECONDITION if the client should not retry until
-  ///      the system state has been explicitly fixed. E.g., if an "rmdir"
-  ///      fails because the directory is non-empty, FAILED_PRECONDITION
-  ///      should be returned since the client should not retry unless
-  ///      they have first fixed up the directory by deleting files from it.
-  ///  (d) Use FAILED_PRECONDITION if the client performs conditional
-  ///      REST Get/Update/Delete on a resource and the resource on the
-  ///      server does not match the condition. E.g., conflicting
-  ///      read-modify-write on the same resource.
-  FAILED_PRECONDITION = 9,
-
-  /// The operation was aborted, typically due to a concurrency issue like
-  /// sequencer check failures, transaction aborts, etc.
-  ///
-  /// See litmus test above for deciding between FAILED_PRECONDITION, ABORTED,
-  /// and UNAVAILABLE.
-  ABORTED = 10,
-
-  /// Operation was attempted past the valid range. E.g., seeking or reading
-  /// past end of file.
-  ///
-  /// Unlike INVALID_ARGUMENT, this error indicates a problem that may be fixed
-  /// if the system state changes. For example, a 32-bit file system will
-  /// generate INVALID_ARGUMENT if asked to read at an offset that is not in the
-  /// range [0,2^32-1], but it will generate OUT_OF_RANGE if asked to read from
-  /// an offset past the current file size.
-  ///
-  /// There is a fair bit of overlap between FAILED_PRECONDITION and
-  /// OUT_OF_RANGE. We recommend using OUT_OF_RANGE (the more specific error)
-  /// when it applies so that callers who are iterating through a space can
-  /// easily look for an OUT_OF_RANGE error to detect when they are done.
-  OUT_OF_RANGE = 11,
-
-  /// Operation is not implemented or not supported/enabled in this service.
-  UNIMPLEMENTED = 12,
-
-  /// Internal errors. Means some invariants expected by underlying System has
-  /// been broken. If you see one of these errors, Something is very broken.
-  INTERNAL = 13,
-
-  /// The service is currently unavailable. This is a most likely a transient
-  /// condition and may be corrected by retrying with a backoff. Note that it is
-  /// not always safe to retry non-idempotent operations.
-  ///
-  /// \warning Although data MIGHT not have been transmitted when this
-  /// status occurs, there is NOT A GUARANTEE that the server has not seen
-  /// anything. So in general it is unsafe to retry on this status code
-  /// if the call is non-idempotent.
-  ///
-  /// See litmus test above for deciding between FAILED_PRECONDITION, ABORTED,
-  /// and UNAVAILABLE.
-  UNAVAILABLE = 14,
-
-  /// Unrecoverable data loss or corruption.
-  DATA_LOSS = 15,
-
-  /// Force users to include a default branch:
-  DO_NOT_USE = -1
-};
-
-}  // namespace grpc
+/// TODO(chengyuc): Remove this file after solving compatibility.
+#include <grpcpp/support/status_code_enum.h>
 
 #endif  // GRPCPP_IMPL_CODEGEN_STATUS_CODE_ENUM_H
diff --git a/contrib/libs/grpc/include/grpcpp/impl/codegen/string_ref.h b/contrib/libs/grpc/include/grpcpp/impl/codegen/string_ref.h
deleted file mode 100644
index f0bb76ea5c..0000000000
--- a/contrib/libs/grpc/include/grpcpp/impl/codegen/string_ref.h
+++ /dev/null
@@ -1,154 +0,0 @@
-/*
- *
- * Copyright 2015 gRPC authors.
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
- */
-
-#ifndef GRPCPP_IMPL_CODEGEN_STRING_REF_H
-#define GRPCPP_IMPL_CODEGEN_STRING_REF_H
-
-// IWYU pragma: private, include <grpcpp/support/string_ref.h>
-
-#include <string.h>
-
-#include <algorithm>
-#include <iosfwd>
-#include <iostream>
-#include <iterator>
-
-#include <grpcpp/impl/codegen/config.h>
-
-#include <util/stream/output.h>
-
-namespace grpc {
-
-/// This class is a non owning reference to a string.
-///
-/// It should be a strict subset of the upcoming std::string_ref.
-///
-/// \see http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2012/n3442.html
-///
-/// The constexpr is dropped or replaced with const for legacy compiler
-/// compatibility.
-class string_ref {
- public:
-  /// types
-  typedef const char* const_iterator;
-  typedef std::reverse_iterator<const_iterator> const_reverse_iterator;
-
-  /// constants
-  const static size_t npos;
-
-  /// construct/copy.
-  string_ref() : data_(nullptr), length_(0) {}
-  string_ref(const string_ref& other)
-      : data_(other.data_), length_(other.length_) {}
-  // NOLINTNEXTLINE(bugprone-unhandled-self-assignment)
-  string_ref& operator=(const string_ref& rhs) {
-    data_ = rhs.data_;
-    length_ = rhs.length_;
-    return *this;
-  }
-
-  /* NOLINTNEXTLINE(google-explicit-constructor) */
-  string_ref(const char* s) : data_(s), length_(strlen(s)) {}
-  string_ref(const char* s, size_t l) : data_(s), length_(l) {}
-  /* NOLINTNEXTLINE(google-explicit-constructor) */
-  string_ref(const TString& s) : data_(s.data()), length_(s.length()) {}
-
-  /// iterators
-  const_iterator begin() const { return data_; }
-  const_iterator end() const { return data_ + length_; }
-  const_iterator cbegin() const { return data_; }
-  const_iterator cend() const { return data_ + length_; }
-  const_reverse_iterator rbegin() const {
-    return const_reverse_iterator(end());
-  }
-  const_reverse_iterator rend() const {
-    return const_reverse_iterator(begin());
-  }
-  const_reverse_iterator crbegin() const {
-    return const_reverse_iterator(end());
-  }
-  const_reverse_iterator crend() const {
-    return const_reverse_iterator(begin());
-  }
-
-  /// capacity
-  size_t size() const { return length_; }
-  size_t length() const { return length_; }
-  size_t max_size() const { return length_; }
-  bool empty() const { return length_ == 0; }
-
-  /// element access
-  const char* data() const { return data_; }
-
-  /// string operations
-  int compare(string_ref x) const {
-    size_t min_size = length_ < x.length_ ? length_ : x.length_;
-    int r = memcmp(data_, x.data_, min_size);
-    if (r < 0) return -1;
-    if (r > 0) return 1;
-    if (length_ < x.length_) return -1;
-    if (length_ > x.length_) return 1;
-    return 0;
-  }
-
-  bool starts_with(string_ref x) const {
-    return length_ >= x.length_ && (memcmp(data_, x.data_, x.length_) == 0);
-  }
-
-  bool ends_with(string_ref x) const {
-    return length_ >= x.length_ &&
-           (memcmp(data_ + (length_ - x.length_), x.data_, x.length_) == 0);
-  }
-
-  size_t find(string_ref s) const {
-    auto it = std::search(cbegin(), cend(), s.cbegin(), s.cend());
-    return it == cend() ? npos : std::distance(cbegin(), it);
-  }
-
-  size_t find(char c) const {
-    auto it = std::find(cbegin(), cend(), c);
-    return it == cend() ? npos : std::distance(cbegin(), it);
-  }
-
-  string_ref substr(size_t pos, size_t n = npos) const {
-    if (pos > length_) pos = length_;
-    if (n > (length_ - pos)) n = length_ - pos;
-    return string_ref(data_ + pos, n);
-  }
-
- private:
-  const char* data_;
-  size_t length_;
-};
-
-/// Comparison operators
-inline bool operator==(string_ref x, string_ref y) { return x.compare(y) == 0; }
-inline bool operator!=(string_ref x, string_ref y) { return x.compare(y) != 0; }
-inline bool operator<(string_ref x, string_ref y) { return x.compare(y) < 0; }
-inline bool operator<=(string_ref x, string_ref y) { return x.compare(y) <= 0; }
-inline bool operator>(string_ref x, string_ref y) { return x.compare(y) > 0; }
-inline bool operator>=(string_ref x, string_ref y) { return x.compare(y) >= 0; }
-
-inline IOutputStream& operator<<(IOutputStream& out, const string_ref& string) {
-  TString t(string.begin(), string.end());
-  return out << t;
-}
-
-}  // namespace grpc
-
-#endif  // GRPCPP_IMPL_CODEGEN_STRING_REF_H
diff --git a/contrib/libs/grpc/include/grpcpp/impl/codegen/stub_options.h b/contrib/libs/grpc/include/grpcpp/impl/codegen/stub_options.h
deleted file mode 100644
index efa1e38ee0..0000000000
--- a/contrib/libs/grpc/include/grpcpp/impl/codegen/stub_options.h
+++ /dev/null
@@ -1,44 +0,0 @@
-/*
- *
- * Copyright 2015 gRPC authors.
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
- */
-
-#ifndef GRPCPP_IMPL_CODEGEN_STUB_OPTIONS_H
-#define GRPCPP_IMPL_CODEGEN_STUB_OPTIONS_H
-
-// IWYU pragma: private, include <grpcpp/support/stub_options.h>
-
-namespace grpc {
-
-/// Useful interface for generated stubs
-class StubOptions {
- public:
-  StubOptions() = default;
-  explicit StubOptions(const char* suffix_for_stats)
-      : suffix_for_stats_(suffix_for_stats) {}
-
-  void set_suffix_for_stats(const char* suffix_for_stats) {
-    suffix_for_stats_ = suffix_for_stats;
-  }
-  const char* suffix_for_stats() const { return suffix_for_stats_; }
-
- private:
-  const char* suffix_for_stats_ = nullptr;
-};
-
-}  // namespace grpc
-
-#endif  // GRPCPP_IMPL_CODEGEN_STUB_OPTIONS_H
diff --git a/contrib/libs/grpc/include/grpcpp/impl/codegen/sync.h b/contrib/libs/grpc/include/grpcpp/impl/codegen/sync.h
index e3954cc731..c4a2c4a43d 100644
--- a/contrib/libs/grpc/include/grpcpp/impl/codegen/sync.h
+++ b/contrib/libs/grpc/include/grpcpp/impl/codegen/sync.h
@@ -1,158 +1,27 @@
-/*
- *
- * Copyright 2019 gRPC authors.
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
- */
+//
+//
+// Copyright 2019 gRPC authors.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+//
 
 #ifndef GRPCPP_IMPL_CODEGEN_SYNC_H
 #define GRPCPP_IMPL_CODEGEN_SYNC_H
 
 // IWYU pragma: private
 
-#include <grpc/impl/codegen/port_platform.h>
-
-#ifdef GPR_HAS_PTHREAD_H
-#include <pthread.h>
-#endif
-
-#include <mutex>
-
-#include "y_absl/synchronization/mutex.h"
-
-#include <grpc/impl/codegen/log.h>
-#include <grpc/impl/codegen/sync.h>
-#include <grpcpp/impl/codegen/core_codegen_interface.h>
-
-// The core library is not accessible in C++ codegen headers, and vice versa.
-// Thus, we need to have duplicate headers with similar functionality.
-// Make sure any change to this file is also reflected in
-// src/core/lib/gprpp/sync.h too.
-//
-// Whenever possible, prefer "src/core/lib/gprpp/sync.h" over this file,
-// since in core we do not rely on g_core_codegen_interface and hence do not
-// pay the costs of virtual function calls.
-
-namespace grpc {
-namespace internal {
-
-#ifdef GPR_ABSEIL_SYNC
-
-using Mutex = y_absl::Mutex;
-using MutexLock = y_absl::MutexLock;
-using ReleasableMutexLock = y_absl::ReleasableMutexLock;
-using CondVar = y_absl::CondVar;
-
-#else
-
-class Y_ABSL_LOCKABLE Mutex {
- public:
-  Mutex() { g_core_codegen_interface->gpr_mu_init(&mu_); }
-  ~Mutex() { g_core_codegen_interface->gpr_mu_destroy(&mu_); }
-
-  Mutex(const Mutex&) = delete;
-  Mutex& operator=(const Mutex&) = delete;
-
-  void Lock() Y_ABSL_EXCLUSIVE_LOCK_FUNCTION() {
-    g_core_codegen_interface->gpr_mu_lock(&mu_);
-  }
-  void Unlock() Y_ABSL_UNLOCK_FUNCTION() {
-    g_core_codegen_interface->gpr_mu_unlock(&mu_);
-  }
-
- private:
-  union {
-    gpr_mu mu_;
-    std::mutex do_not_use_sth_;
-#ifdef GPR_HAS_PTHREAD_H
-    pthread_mutex_t do_not_use_pth_;
-#endif
-  };
-
-  friend class CondVar;
-};
-
-class Y_ABSL_SCOPED_LOCKABLE MutexLock {
- public:
-  explicit MutexLock(Mutex* mu) Y_ABSL_EXCLUSIVE_LOCK_FUNCTION(mu) : mu_(mu) {
-    mu_->Lock();
-  }
-  ~MutexLock() Y_ABSL_UNLOCK_FUNCTION() { mu_->Unlock(); }
-
-  MutexLock(const MutexLock&) = delete;
-  MutexLock& operator=(const MutexLock&) = delete;
-
- private:
-  Mutex* const mu_;
-};
-
-class Y_ABSL_SCOPED_LOCKABLE ReleasableMutexLock {
- public:
-  explicit ReleasableMutexLock(Mutex* mu) Y_ABSL_EXCLUSIVE_LOCK_FUNCTION(mu)
-      : mu_(mu) {
-    mu_->Lock();
-  }
-  ~ReleasableMutexLock() Y_ABSL_UNLOCK_FUNCTION() {
-    if (!released_) mu_->Unlock();
-  }
-
-  ReleasableMutexLock(const ReleasableMutexLock&) = delete;
-  ReleasableMutexLock& operator=(const ReleasableMutexLock&) = delete;
-
-  void Release() Y_ABSL_UNLOCK_FUNCTION() {
-    GPR_DEBUG_ASSERT(!released_);
-    released_ = true;
-    mu_->Unlock();
-  }
-
- private:
-  Mutex* const mu_;
-  bool released_ = false;
-};
-
-class CondVar {
- public:
-  CondVar() { g_core_codegen_interface->gpr_cv_init(&cv_); }
-  ~CondVar() { g_core_codegen_interface->gpr_cv_destroy(&cv_); }
-
-  CondVar(const CondVar&) = delete;
-  CondVar& operator=(const CondVar&) = delete;
-
-  void Signal() { g_core_codegen_interface->gpr_cv_signal(&cv_); }
-  void SignalAll() { g_core_codegen_interface->gpr_cv_broadcast(&cv_); }
-
-  void Wait(Mutex* mu) {
-    g_core_codegen_interface->gpr_cv_wait(
-        &cv_, &mu->mu_,
-        g_core_codegen_interface->gpr_inf_future(GPR_CLOCK_REALTIME));
-  }
-
- private:
-  gpr_cv cv_;
-};
-
-#endif  // GPR_ABSEIL_SYNC
-
-template <typename Predicate>
-GRPC_DEPRECATED("incompatible with thread safety analysis")
-static void WaitUntil(CondVar* cv, Mutex* mu, Predicate pred) {
-  while (!pred()) {
-    cv->Wait(mu);
-  }
-}
-
-}  // namespace internal
-}  // namespace grpc
+/// TODO(chengyuc): Remove this file after solving compatibility.
+#include <grpcpp/impl/sync.h>
 
 #endif  // GRPCPP_IMPL_CODEGEN_SYNC_H
diff --git a/contrib/libs/grpc/include/grpcpp/impl/codegen/sync_stream.h b/contrib/libs/grpc/include/grpcpp/impl/codegen/sync_stream.h
deleted file mode 100644
index 1235b8de44..0000000000
--- a/contrib/libs/grpc/include/grpcpp/impl/codegen/sync_stream.h
+++ /dev/null
@@ -1,950 +0,0 @@
-/*
- *
- * Copyright 2019 gRPC authors.
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-#ifndef GRPCPP_IMPL_CODEGEN_SYNC_STREAM_H
-#define GRPCPP_IMPL_CODEGEN_SYNC_STREAM_H
-
-// IWYU pragma: private, include <grpcpp/support/sync_stream.h>
-
-#include <grpcpp/impl/call.h>
-#include <grpcpp/impl/codegen/channel_interface.h>
-#include <grpcpp/impl/codegen/client_context.h>
-#include <grpcpp/impl/codegen/completion_queue.h>
-#include <grpcpp/impl/codegen/core_codegen_interface.h>
-#include <grpcpp/impl/codegen/server_context.h>
-#include <grpcpp/impl/codegen/service_type.h>
-#include <grpcpp/impl/codegen/status.h>
-
-namespace grpc {
-
-namespace internal {
-/// Common interface for all synchronous client side streaming.
-class ClientStreamingInterface {
- public:
-  virtual ~ClientStreamingInterface() {}
-
-  /// Block waiting until the stream finishes and a final status of the call is
-  /// available.
-  ///
-  /// It is appropriate to call this method exactly once when both:
-  ///   * the calling code (client-side) has no more message to send
-  ///     (this can be declared implicitly by calling this method, or
-  ///     explicitly through an earlier call to <i>WritesDone</i> method of the
-  ///     class in use, e.g. \a ClientWriterInterface::WritesDone or
-  ///     \a ClientReaderWriterInterface::WritesDone).
-  ///   * there are no more messages to be received from the server (which can
-  ///     be known implicitly, or explicitly from an earlier call to \a
-  ///     ReaderInterface::Read that returned "false").
-  ///
-  /// This function will return either:
-  /// - when all incoming messages have been read and the server has
-  ///   returned status.
-  /// - when the server has returned a non-OK status.
-  /// - OR when the call failed for some reason and the library generated a
-  ///   status.
-  ///
-  /// Return values:
-  ///   - \a Status contains the status code, message and details for the call
-  ///   - the \a ClientContext associated with this call is updated with
-  ///     possible trailing metadata sent from the server.
-  virtual grpc::Status Finish() = 0;
-};
-
-/// Common interface for all synchronous server side streaming.
-class ServerStreamingInterface {
- public:
-  virtual ~ServerStreamingInterface() {}
-
-  /// Block to send initial metadata to client.
-  /// This call is optional, but if it is used, it cannot be used concurrently
-  /// with or after the \a Finish method.
-  ///
-  /// The initial metadata that will be sent to the client will be
-  /// taken from the \a ServerContext associated with the call.
-  virtual void SendInitialMetadata() = 0;
-};
-
-/// An interface that yields a sequence of messages of type \a R.
-template <class R>
-class ReaderInterface {
- public:
-  virtual ~ReaderInterface() {}
-
-  /// Get an upper bound on the next message size available for reading on this
-  /// stream.
-  virtual bool NextMessageSize(uint32_t* sz) = 0;
-
-  /// Block to read a message and parse to \a msg. Returns \a true on success.
-  /// This is thread-safe with respect to \a Write or \WritesDone methods on
-  /// the same stream. It should not be called concurrently with another \a
-  /// Read on the same stream as the order of delivery will not be defined.
-  ///
-  /// \param[out] msg The read message.
-  ///
-  /// \return \a false when there will be no more incoming messages, either
-  /// because the other side has called \a WritesDone() or the stream has failed
-  /// (or been cancelled).
-  virtual bool Read(R* msg) = 0;
-};
-
-/// An interface that can be fed a sequence of messages of type \a W.
-template <class W>
-class WriterInterface {
- public:
-  virtual ~WriterInterface() {}
-
-  /// Block to write \a msg to the stream with WriteOptions \a options.
-  /// This is thread-safe with respect to \a ReaderInterface::Read
-  ///
-  /// \param msg The message to be written to the stream.
-  /// \param options The WriteOptions affecting the write operation.
-  ///
-  /// \return \a true on success, \a false when the stream has been closed.
-  virtual bool Write(const W& msg, grpc::WriteOptions options) = 0;
-
-  /// Block to write \a msg to the stream with default write options.
-  /// This is thread-safe with respect to \a ReaderInterface::Read
-  ///
-  /// \param msg The message to be written to the stream.
-  ///
-  /// \return \a true on success, \a false when the stream has been closed.
-  inline bool Write(const W& msg) { return Write(msg, grpc::WriteOptions()); }
-
-  /// Write \a msg and coalesce it with the writing of trailing metadata, using
-  /// WriteOptions \a options.
-  ///
-  /// For client, WriteLast is equivalent of performing Write and WritesDone in
-  /// a single step. \a msg and trailing metadata are coalesced and sent on wire
-  /// by calling this function. For server, WriteLast buffers the \a msg.
-  /// The writing of \a msg is held until the service handler returns,
-  /// where \a msg and trailing metadata are coalesced and sent on wire.
-  /// Note that WriteLast can only buffer \a msg up to the flow control window
-  /// size. If \a msg size is larger than the window size, it will be sent on
-  /// wire without buffering.
-  ///
-  /// \param[in] msg The message to be written to the stream.
-  /// \param[in] options The WriteOptions to be used to write this message.
-  void WriteLast(const W& msg, grpc::WriteOptions options) {
-    Write(msg, options.set_last_message());
-  }
-};
-
-}  // namespace internal
-
-/// Client-side interface for streaming reads of message of type \a R.
-template <class R>
-class ClientReaderInterface : public internal::ClientStreamingInterface,
-                              public internal::ReaderInterface<R> {
- public:
-  /// Block to wait for initial metadata from server. The received metadata
-  /// can only be accessed after this call returns. Should only be called before
-  /// the first read. Calling this method is optional, and if it is not called
-  /// the metadata will be available in ClientContext after the first read.
-  virtual void WaitForInitialMetadata() = 0;
-};
-
-namespace internal {
-template <class R>
-class ClientReaderFactory {
- public:
-  template <class W>
-  static ClientReader<R>* Create(grpc::ChannelInterface* channel,
-                                 const grpc::internal::RpcMethod& method,
-                                 grpc::ClientContext* context,
-                                 const W& request) {
-    return new ClientReader<R>(channel, method, context, request);
-  }
-};
-}  // namespace internal
-
-/// Synchronous (blocking) client-side API for doing server-streaming RPCs,
-/// where the stream of messages coming from the server has messages
-/// of type \a R.
-template <class R>
-class ClientReader final : public ClientReaderInterface<R> {
- public:
-  /// See the \a ClientStreamingInterface.WaitForInitialMetadata method for
-  /// semantics.
-  ///
-  //  Side effect:
-  ///   Once complete, the initial metadata read from
-  ///   the server will be accessible through the \a ClientContext used to
-  ///   construct this object.
-  void WaitForInitialMetadata() override {
-    GPR_CODEGEN_ASSERT(!context_->initial_metadata_received_);
-
-    grpc::internal::CallOpSet<grpc::internal::CallOpRecvInitialMetadata> ops;
-    ops.RecvInitialMetadata(context_);
-    call_.PerformOps(&ops);
-    cq_.Pluck(&ops);  /// status ignored
-  }
-
-  bool NextMessageSize(uint32_t* sz) override {
-    int result = call_.max_receive_message_size();
-    *sz = (result > 0) ? result : UINT32_MAX;
-    return true;
-  }
-
-  /// See the \a ReaderInterface.Read method for semantics.
-  /// Side effect:
-  ///   This also receives initial metadata from the server, if not
-  ///   already received (if initial metadata is received, it can be then
-  ///   accessed through the \a ClientContext associated with this call).
-  bool Read(R* msg) override {
-    grpc::internal::CallOpSet<grpc::internal::CallOpRecvInitialMetadata,
-                              grpc::internal::CallOpRecvMessage<R>>
-        ops;
-    if (!context_->initial_metadata_received_) {
-      ops.RecvInitialMetadata(context_);
-    }
-    ops.RecvMessage(msg);
-    call_.PerformOps(&ops);
-    return cq_.Pluck(&ops) && ops.got_message;
-  }
-
-  /// See the \a ClientStreamingInterface.Finish method for semantics.
-  ///
-  /// Side effect:
-  ///   The \a ClientContext associated with this call is updated with
-  ///   possible metadata received from the server.
-  grpc::Status Finish() override {
-    grpc::internal::CallOpSet<grpc::internal::CallOpRecvInitialMetadata,
-                              grpc::internal::CallOpClientRecvStatus>
-        ops;
-    if (!context_->initial_metadata_received_) {
-      ops.RecvInitialMetadata(context_);
-    }
-    grpc::Status status;
-    ops.ClientRecvStatus(context_, &status);
-    call_.PerformOps(&ops);
-    GPR_CODEGEN_ASSERT(cq_.Pluck(&ops));
-    return status;
-  }
-
- private:
-  friend class internal::ClientReaderFactory<R>;
-  grpc::ClientContext* context_;
-  grpc::CompletionQueue cq_;
-  grpc::internal::Call call_;
-
-  /// Block to create a stream and write the initial metadata and \a request
-  /// out. Note that \a context will be used to fill in custom initial
-  /// metadata used to send to the server when starting the call.
-  template <class W>
-  ClientReader(grpc::ChannelInterface* channel,
-               const grpc::internal::RpcMethod& method,
-               grpc::ClientContext* context, const W& request)
-      : context_(context),
-        cq_(grpc_completion_queue_attributes{
-            GRPC_CQ_CURRENT_VERSION, GRPC_CQ_PLUCK, GRPC_CQ_DEFAULT_POLLING,
-            nullptr}),  // Pluckable cq
-        call_(channel->CreateCall(method, context, &cq_)) {
-    grpc::internal::CallOpSet<grpc::internal::CallOpSendInitialMetadata,
-                              grpc::internal::CallOpSendMessage,
-                              grpc::internal::CallOpClientSendClose>
-        ops;
-    ops.SendInitialMetadata(&context->send_initial_metadata_,
-                            context->initial_metadata_flags());
-    // TODO(ctiller): don't assert
-    GPR_CODEGEN_ASSERT(ops.SendMessagePtr(&request).ok());
-    ops.ClientSendClose();
-    call_.PerformOps(&ops);
-    cq_.Pluck(&ops);
-  }
-};
-
-/// Client-side interface for streaming writes of message type \a W.
-template <class W>
-class ClientWriterInterface : public internal::ClientStreamingInterface,
-                              public internal::WriterInterface<W> {
- public:
-  /// Half close writing from the client. (signal that the stream of messages
-  /// coming from the client is complete).
-  /// Blocks until currently-pending writes are completed.
-  /// Thread safe with respect to \a ReaderInterface::Read operations only
-  ///
-  /// \return Whether the writes were successful.
-  virtual bool WritesDone() = 0;
-};
-
-namespace internal {
-template <class W>
-class ClientWriterFactory {
- public:
-  template <class R>
-  static ClientWriter<W>* Create(grpc::ChannelInterface* channel,
-                                 const grpc::internal::RpcMethod& method,
-                                 grpc::ClientContext* context, R* response) {
-    return new ClientWriter<W>(channel, method, context, response);
-  }
-};
-}  // namespace internal
-
-/// Synchronous (blocking) client-side API for doing client-streaming RPCs,
-/// where the outgoing message stream coming from the client has messages of
-/// type \a W.
-template <class W>
-class ClientWriter : public ClientWriterInterface<W> {
- public:
-  /// See the \a ClientStreamingInterface.WaitForInitialMetadata method for
-  /// semantics.
-  ///
-  //  Side effect:
-  ///   Once complete, the initial metadata read from the server will be
-  ///   accessible through the \a ClientContext used to construct this object.
-  void WaitForInitialMetadata() {
-    GPR_CODEGEN_ASSERT(!context_->initial_metadata_received_);
-
-    grpc::internal::CallOpSet<grpc::internal::CallOpRecvInitialMetadata> ops;
-    ops.RecvInitialMetadata(context_);
-    call_.PerformOps(&ops);
-    cq_.Pluck(&ops);  // status ignored
-  }
-
-  /// See the WriterInterface.Write(const W& msg, WriteOptions options) method
-  /// for semantics.
-  ///
-  /// Side effect:
-  ///   Also sends initial metadata if not already sent (using the
-  ///   \a ClientContext associated with this call).
-  using internal::WriterInterface<W>::Write;
-  bool Write(const W& msg, grpc::WriteOptions options) override {
-    grpc::internal::CallOpSet<grpc::internal::CallOpSendInitialMetadata,
-                              grpc::internal::CallOpSendMessage,
-                              grpc::internal::CallOpClientSendClose>
-        ops;
-
-    if (options.is_last_message()) {
-      options.set_buffer_hint();
-      ops.ClientSendClose();
-    }
-    if (context_->initial_metadata_corked_) {
-      ops.SendInitialMetadata(&context_->send_initial_metadata_,
-                              context_->initial_metadata_flags());
-      context_->set_initial_metadata_corked(false);
-    }
-    if (!ops.SendMessagePtr(&msg, options).ok()) {
-      return false;
-    }
-
-    call_.PerformOps(&ops);
-    return cq_.Pluck(&ops);
-  }
-
-  bool WritesDone() override {
-    grpc::internal::CallOpSet<grpc::internal::CallOpClientSendClose> ops;
-    ops.ClientSendClose();
-    call_.PerformOps(&ops);
-    return cq_.Pluck(&ops);
-  }
-
-  /// See the ClientStreamingInterface.Finish method for semantics.
-  /// Side effects:
-  ///   - Also receives initial metadata if not already received.
-  ///   - Attempts to fill in the \a response parameter passed
-  ///     to the constructor of this instance with the response
-  ///     message from the server.
-  grpc::Status Finish() override {
-    grpc::Status status;
-    if (!context_->initial_metadata_received_) {
-      finish_ops_.RecvInitialMetadata(context_);
-    }
-    finish_ops_.ClientRecvStatus(context_, &status);
-    call_.PerformOps(&finish_ops_);
-    GPR_CODEGEN_ASSERT(cq_.Pluck(&finish_ops_));
-    return status;
-  }
-
- private:
-  friend class internal::ClientWriterFactory<W>;
-
-  /// Block to create a stream (i.e. send request headers and other initial
-  /// metadata to the server). Note that \a context will be used to fill
-  /// in custom initial metadata. \a response will be filled in with the
-  /// single expected response message from the server upon a successful
-  /// call to the \a Finish method of this instance.
-  template <class R>
-  ClientWriter(grpc::ChannelInterface* channel,
-               const grpc::internal::RpcMethod& method,
-               grpc::ClientContext* context, R* response)
-      : context_(context),
-        cq_(grpc_completion_queue_attributes{
-            GRPC_CQ_CURRENT_VERSION, GRPC_CQ_PLUCK, GRPC_CQ_DEFAULT_POLLING,
-            nullptr}),  // Pluckable cq
-        call_(channel->CreateCall(method, context, &cq_)) {
-    finish_ops_.RecvMessage(response);
-    finish_ops_.AllowNoMessage();
-
-    if (!context_->initial_metadata_corked_) {
-      grpc::internal::CallOpSet<grpc::internal::CallOpSendInitialMetadata> ops;
-      ops.SendInitialMetadata(&context->send_initial_metadata_,
-                              context->initial_metadata_flags());
-      call_.PerformOps(&ops);
-      cq_.Pluck(&ops);
-    }
-  }
-
-  grpc::ClientContext* context_;
-  grpc::internal::CallOpSet<grpc::internal::CallOpRecvInitialMetadata,
-                            grpc::internal::CallOpGenericRecvMessage,
-                            grpc::internal::CallOpClientRecvStatus>
-      finish_ops_;
-  grpc::CompletionQueue cq_;
-  grpc::internal::Call call_;
-};
-
-/// Client-side interface for bi-directional streaming with
-/// client-to-server stream messages of type \a W and
-/// server-to-client stream messages of type \a R.
-template <class W, class R>
-class ClientReaderWriterInterface : public internal::ClientStreamingInterface,
-                                    public internal::WriterInterface<W>,
-                                    public internal::ReaderInterface<R> {
- public:
-  /// Block to wait for initial metadata from server. The received metadata
-  /// can only be accessed after this call returns. Should only be called before
-  /// the first read. Calling this method is optional, and if it is not called
-  /// the metadata will be available in ClientContext after the first read.
-  virtual void WaitForInitialMetadata() = 0;
-
-  /// Half close writing from the client. (signal that the stream of messages
-  /// coming from the client is complete).
-  /// Blocks until currently-pending writes are completed.
-  /// Thread-safe with respect to \a ReaderInterface::Read
-  ///
-  /// \return Whether the writes were successful.
-  virtual bool WritesDone() = 0;
-};
-
-namespace internal {
-template <class W, class R>
-class ClientReaderWriterFactory {
- public:
-  static ClientReaderWriter<W, R>* Create(
-      grpc::ChannelInterface* channel, const grpc::internal::RpcMethod& method,
-      grpc::ClientContext* context) {
-    return new ClientReaderWriter<W, R>(channel, method, context);
-  }
-};
-}  // namespace internal
-
-/// Synchronous (blocking) client-side API for bi-directional streaming RPCs,
-/// where the outgoing message stream coming from the client has messages of
-/// type \a W, and the incoming messages stream coming from the server has
-/// messages of type \a R.
-template <class W, class R>
-class ClientReaderWriter final : public ClientReaderWriterInterface<W, R> {
- public:
-  /// Block waiting to read initial metadata from the server.
-  /// This call is optional, but if it is used, it cannot be used concurrently
-  /// with or after the \a Finish method.
-  ///
-  /// Once complete, the initial metadata read from the server will be
-  /// accessible through the \a ClientContext used to construct this object.
-  void WaitForInitialMetadata() override {
-    GPR_CODEGEN_ASSERT(!context_->initial_metadata_received_);
-
-    grpc::internal::CallOpSet<grpc::internal::CallOpRecvInitialMetadata> ops;
-    ops.RecvInitialMetadata(context_);
-    call_.PerformOps(&ops);
-    cq_.Pluck(&ops);  // status ignored
-  }
-
-  bool NextMessageSize(uint32_t* sz) override {
-    int result = call_.max_receive_message_size();
-    *sz = (result > 0) ? result : UINT32_MAX;
-    return true;
-  }
-
-  /// See the \a ReaderInterface.Read method for semantics.
-  /// Side effect:
-  ///   Also receives initial metadata if not already received (updates the \a
-  ///   ClientContext associated with this call in that case).
-  bool Read(R* msg) override {
-    grpc::internal::CallOpSet<grpc::internal::CallOpRecvInitialMetadata,
-                              grpc::internal::CallOpRecvMessage<R>>
-        ops;
-    if (!context_->initial_metadata_received_) {
-      ops.RecvInitialMetadata(context_);
-    }
-    ops.RecvMessage(msg);
-    call_.PerformOps(&ops);
-    return cq_.Pluck(&ops) && ops.got_message;
-  }
-
-  /// See the \a WriterInterface.Write method for semantics.
-  ///
-  /// Side effect:
-  ///   Also sends initial metadata if not already sent (using the
-  ///   \a ClientContext associated with this call to fill in values).
-  using internal::WriterInterface<W>::Write;
-  bool Write(const W& msg, grpc::WriteOptions options) override {
-    grpc::internal::CallOpSet<grpc::internal::CallOpSendInitialMetadata,
-                              grpc::internal::CallOpSendMessage,
-                              grpc::internal::CallOpClientSendClose>
-        ops;
-
-    if (options.is_last_message()) {
-      options.set_buffer_hint();
-      ops.ClientSendClose();
-    }
-    if (context_->initial_metadata_corked_) {
-      ops.SendInitialMetadata(&context_->send_initial_metadata_,
-                              context_->initial_metadata_flags());
-      context_->set_initial_metadata_corked(false);
-    }
-    if (!ops.SendMessagePtr(&msg, options).ok()) {
-      return false;
-    }
-
-    call_.PerformOps(&ops);
-    return cq_.Pluck(&ops);
-  }
-
-  bool WritesDone() override {
-    grpc::internal::CallOpSet<grpc::internal::CallOpClientSendClose> ops;
-    ops.ClientSendClose();
-    call_.PerformOps(&ops);
-    return cq_.Pluck(&ops);
-  }
-
-  /// See the ClientStreamingInterface.Finish method for semantics.
-  ///
-  /// Side effect:
-  ///   - the \a ClientContext associated with this call is updated with
-  ///     possible trailing metadata sent from the server.
-  grpc::Status Finish() override {
-    grpc::internal::CallOpSet<grpc::internal::CallOpRecvInitialMetadata,
-                              grpc::internal::CallOpClientRecvStatus>
-        ops;
-    if (!context_->initial_metadata_received_) {
-      ops.RecvInitialMetadata(context_);
-    }
-    grpc::Status status;
-    ops.ClientRecvStatus(context_, &status);
-    call_.PerformOps(&ops);
-    GPR_CODEGEN_ASSERT(cq_.Pluck(&ops));
-    return status;
-  }
-
- private:
-  friend class internal::ClientReaderWriterFactory<W, R>;
-
-  grpc::ClientContext* context_;
-  grpc::CompletionQueue cq_;
-  grpc::internal::Call call_;
-
-  /// Block to create a stream and write the initial metadata and \a request
-  /// out. Note that \a context will be used to fill in custom initial metadata
-  /// used to send to the server when starting the call.
-  ClientReaderWriter(grpc::ChannelInterface* channel,
-                     const grpc::internal::RpcMethod& method,
-                     grpc::ClientContext* context)
-      : context_(context),
-        cq_(grpc_completion_queue_attributes{
-            GRPC_CQ_CURRENT_VERSION, GRPC_CQ_PLUCK, GRPC_CQ_DEFAULT_POLLING,
-            nullptr}),  // Pluckable cq
-        call_(channel->CreateCall(method, context, &cq_)) {
-    if (!context_->initial_metadata_corked_) {
-      grpc::internal::CallOpSet<grpc::internal::CallOpSendInitialMetadata> ops;
-      ops.SendInitialMetadata(&context->send_initial_metadata_,
-                              context->initial_metadata_flags());
-      call_.PerformOps(&ops);
-      cq_.Pluck(&ops);
-    }
-  }
-};
-
-/// Server-side interface for streaming reads of message of type \a R.
-template <class R>
-class ServerReaderInterface : public internal::ServerStreamingInterface,
-                              public internal::ReaderInterface<R> {};
-
-/// Synchronous (blocking) server-side API for doing client-streaming RPCs,
-/// where the incoming message stream coming from the client has messages of
-/// type \a R.
-template <class R>
-class ServerReader final : public ServerReaderInterface<R> {
- public:
-  /// See the \a ServerStreamingInterface.SendInitialMetadata method
-  /// for semantics. Note that initial metadata will be affected by the
-  /// \a ServerContext associated with this call.
-  void SendInitialMetadata() override {
-    GPR_CODEGEN_ASSERT(!ctx_->sent_initial_metadata_);
-
-    grpc::internal::CallOpSet<grpc::internal::CallOpSendInitialMetadata> ops;
-    ops.SendInitialMetadata(&ctx_->initial_metadata_,
-                            ctx_->initial_metadata_flags());
-    if (ctx_->compression_level_set()) {
-      ops.set_compression_level(ctx_->compression_level());
-    }
-    ctx_->sent_initial_metadata_ = true;
-    call_->PerformOps(&ops);
-    call_->cq()->Pluck(&ops);
-  }
-
-  bool NextMessageSize(uint32_t* sz) override {
-    int result = call_->max_receive_message_size();
-    *sz = (result > 0) ? result : UINT32_MAX;
-    return true;
-  }
-
-  bool Read(R* msg) override {
-    grpc::internal::CallOpSet<grpc::internal::CallOpRecvMessage<R>> ops;
-    ops.RecvMessage(msg);
-    call_->PerformOps(&ops);
-    bool ok = call_->cq()->Pluck(&ops) && ops.got_message;
-    if (!ok) {
-      ctx_->MaybeMarkCancelledOnRead();
-    }
-    return ok;
-  }
-
- private:
-  grpc::internal::Call* const call_;
-  ServerContext* const ctx_;
-
-  template <class ServiceType, class RequestType, class ResponseType>
-  friend class internal::ClientStreamingHandler;
-
-  ServerReader(grpc::internal::Call* call, grpc::ServerContext* ctx)
-      : call_(call), ctx_(ctx) {}
-};
-
-/// Server-side interface for streaming writes of message of type \a W.
-template <class W>
-class ServerWriterInterface : public internal::ServerStreamingInterface,
-                              public internal::WriterInterface<W> {};
-
-/// Synchronous (blocking) server-side API for doing for doing a
-/// server-streaming RPCs, where the outgoing message stream coming from the
-/// server has messages of type \a W.
-template <class W>
-class ServerWriter final : public ServerWriterInterface<W> {
- public:
-  /// See the \a ServerStreamingInterface.SendInitialMetadata method
-  /// for semantics.
-  /// Note that initial metadata will be affected by the
-  /// \a ServerContext associated with this call.
-  void SendInitialMetadata() override {
-    GPR_CODEGEN_ASSERT(!ctx_->sent_initial_metadata_);
-
-    grpc::internal::CallOpSet<grpc::internal::CallOpSendInitialMetadata> ops;
-    ops.SendInitialMetadata(&ctx_->initial_metadata_,
-                            ctx_->initial_metadata_flags());
-    if (ctx_->compression_level_set()) {
-      ops.set_compression_level(ctx_->compression_level());
-    }
-    ctx_->sent_initial_metadata_ = true;
-    call_->PerformOps(&ops);
-    call_->cq()->Pluck(&ops);
-  }
-
-  /// See the \a WriterInterface.Write method for semantics.
-  ///
-  /// Side effect:
-  ///   Also sends initial metadata if not already sent (using the
-  ///   \a ClientContext associated with this call to fill in values).
-  using internal::WriterInterface<W>::Write;
-  bool Write(const W& msg, grpc::WriteOptions options) override {
-    if (options.is_last_message()) {
-      options.set_buffer_hint();
-    }
-
-    if (!ctx_->pending_ops_.SendMessagePtr(&msg, options).ok()) {
-      return false;
-    }
-    if (!ctx_->sent_initial_metadata_) {
-      ctx_->pending_ops_.SendInitialMetadata(&ctx_->initial_metadata_,
-                                             ctx_->initial_metadata_flags());
-      if (ctx_->compression_level_set()) {
-        ctx_->pending_ops_.set_compression_level(ctx_->compression_level());
-      }
-      ctx_->sent_initial_metadata_ = true;
-    }
-    call_->PerformOps(&ctx_->pending_ops_);
-    // if this is the last message we defer the pluck until AFTER we start
-    // the trailing md op. This prevents hangs. See
-    // https://github.com/grpc/grpc/issues/11546
-    if (options.is_last_message()) {
-      ctx_->has_pending_ops_ = true;
-      return true;
-    }
-    ctx_->has_pending_ops_ = false;
-    return call_->cq()->Pluck(&ctx_->pending_ops_);
-  }
-
- private:
-  grpc::internal::Call* const call_;
-  grpc::ServerContext* const ctx_;
-
-  template <class ServiceType, class RequestType, class ResponseType>
-  friend class internal::ServerStreamingHandler;
-
-  ServerWriter(grpc::internal::Call* call, grpc::ServerContext* ctx)
-      : call_(call), ctx_(ctx) {}
-};
-
-/// Server-side interface for bi-directional streaming.
-template <class W, class R>
-class ServerReaderWriterInterface : public internal::ServerStreamingInterface,
-                                    public internal::WriterInterface<W>,
-                                    public internal::ReaderInterface<R> {};
-
-/// Actual implementation of bi-directional streaming
-namespace internal {
-template <class W, class R>
-class ServerReaderWriterBody final {
- public:
-  ServerReaderWriterBody(grpc::internal::Call* call, grpc::ServerContext* ctx)
-      : call_(call), ctx_(ctx) {}
-
-  void SendInitialMetadata() {
-    GPR_CODEGEN_ASSERT(!ctx_->sent_initial_metadata_);
-
-    grpc::internal::CallOpSet<grpc::internal::CallOpSendInitialMetadata> ops;
-    ops.SendInitialMetadata(&ctx_->initial_metadata_,
-                            ctx_->initial_metadata_flags());
-    if (ctx_->compression_level_set()) {
-      ops.set_compression_level(ctx_->compression_level());
-    }
-    ctx_->sent_initial_metadata_ = true;
-    call_->PerformOps(&ops);
-    call_->cq()->Pluck(&ops);
-  }
-
-  bool NextMessageSize(uint32_t* sz) {
-    int result = call_->max_receive_message_size();
-    *sz = (result > 0) ? result : UINT32_MAX;
-    return true;
-  }
-
-  bool Read(R* msg) {
-    grpc::internal::CallOpSet<grpc::internal::CallOpRecvMessage<R>> ops;
-    ops.RecvMessage(msg);
-    call_->PerformOps(&ops);
-    bool ok = call_->cq()->Pluck(&ops) && ops.got_message;
-    if (!ok) {
-      ctx_->MaybeMarkCancelledOnRead();
-    }
-    return ok;
-  }
-
-  bool Write(const W& msg, grpc::WriteOptions options) {
-    if (options.is_last_message()) {
-      options.set_buffer_hint();
-    }
-    if (!ctx_->pending_ops_.SendMessagePtr(&msg, options).ok()) {
-      return false;
-    }
-    if (!ctx_->sent_initial_metadata_) {
-      ctx_->pending_ops_.SendInitialMetadata(&ctx_->initial_metadata_,
-                                             ctx_->initial_metadata_flags());
-      if (ctx_->compression_level_set()) {
-        ctx_->pending_ops_.set_compression_level(ctx_->compression_level());
-      }
-      ctx_->sent_initial_metadata_ = true;
-    }
-    call_->PerformOps(&ctx_->pending_ops_);
-    // if this is the last message we defer the pluck until AFTER we start
-    // the trailing md op. This prevents hangs. See
-    // https://github.com/grpc/grpc/issues/11546
-    if (options.is_last_message()) {
-      ctx_->has_pending_ops_ = true;
-      return true;
-    }
-    ctx_->has_pending_ops_ = false;
-    return call_->cq()->Pluck(&ctx_->pending_ops_);
-  }
-
- private:
-  grpc::internal::Call* const call_;
-  grpc::ServerContext* const ctx_;
-};
-
-}  // namespace internal
-
-/// Synchronous (blocking) server-side API for a bidirectional
-/// streaming call, where the incoming message stream coming from the client has
-/// messages of type \a R, and the outgoing message streaming coming from
-/// the server has messages of type \a W.
-template <class W, class R>
-class ServerReaderWriter final : public ServerReaderWriterInterface<W, R> {
- public:
-  /// See the \a ServerStreamingInterface.SendInitialMetadata method
-  /// for semantics. Note that initial metadata will be affected by the
-  /// \a ServerContext associated with this call.
-  void SendInitialMetadata() override { body_.SendInitialMetadata(); }
-
-  bool NextMessageSize(uint32_t* sz) override {
-    return body_.NextMessageSize(sz);
-  }
-
-  bool Read(R* msg) override { return body_.Read(msg); }
-
-  /// See the \a WriterInterface.Write(const W& msg, WriteOptions options)
-  /// method for semantics.
-  /// Side effect:
-  ///   Also sends initial metadata if not already sent (using the \a
-  ///   ServerContext associated with this call).
-  using internal::WriterInterface<W>::Write;
-  bool Write(const W& msg, grpc::WriteOptions options) override {
-    return body_.Write(msg, options);
-  }
-
- private:
-  internal::ServerReaderWriterBody<W, R> body_;
-
-  friend class internal::TemplatedBidiStreamingHandler<ServerReaderWriter<W, R>,
-                                                       false>;
-  ServerReaderWriter(grpc::internal::Call* call, grpc::ServerContext* ctx)
-      : body_(call, ctx) {}
-};
-
-/// A class to represent a flow-controlled unary call. This is something
-/// of a hybrid between conventional unary and streaming. This is invoked
-/// through a unary call on the client side, but the server responds to it
-/// as though it were a single-ping-pong streaming call. The server can use
-/// the \a NextMessageSize method to determine an upper-bound on the size of
-/// the message. A key difference relative to streaming: ServerUnaryStreamer
-/// must have exactly 1 Read and exactly 1 Write, in that order, to function
-/// correctly. Otherwise, the RPC is in error.
-template <class RequestType, class ResponseType>
-class ServerUnaryStreamer final
-    : public ServerReaderWriterInterface<ResponseType, RequestType> {
- public:
-  /// Block to send initial metadata to client.
-  /// Implicit input parameter:
-  ///    - the \a ServerContext associated with this call will be used for
-  ///      sending initial metadata.
-  void SendInitialMetadata() override { body_.SendInitialMetadata(); }
-
-  /// Get an upper bound on the request message size from the client.
-  bool NextMessageSize(uint32_t* sz) override {
-    return body_.NextMessageSize(sz);
-  }
-
-  /// Read a message of type \a R into \a msg. Completion will be notified by \a
-  /// tag on the associated completion queue.
-  /// This is thread-safe with respect to \a Write or \a WritesDone methods. It
-  /// should not be called concurrently with other streaming APIs
-  /// on the same stream. It is not meaningful to call it concurrently
-  /// with another \a ReaderInterface::Read on the same stream since reads on
-  /// the same stream are delivered in order.
-  ///
-  /// \param[out] msg Where to eventually store the read message.
-  /// \param[in] tag The tag identifying the operation.
-  bool Read(RequestType* request) override {
-    if (read_done_) {
-      return false;
-    }
-    read_done_ = true;
-    return body_.Read(request);
-  }
-
-  /// Block to write \a msg to the stream with WriteOptions \a options.
-  /// This is thread-safe with respect to \a ReaderInterface::Read
-  ///
-  /// \param msg The message to be written to the stream.
-  /// \param options The WriteOptions affecting the write operation.
-  ///
-  /// \return \a true on success, \a false when the stream has been closed.
-  using internal::WriterInterface<ResponseType>::Write;
-  bool Write(const ResponseType& response,
-             grpc::WriteOptions options) override {
-    if (write_done_ || !read_done_) {
-      return false;
-    }
-    write_done_ = true;
-    return body_.Write(response, options);
-  }
-
- private:
-  internal::ServerReaderWriterBody<ResponseType, RequestType> body_;
-  bool read_done_;
-  bool write_done_;
-
-  friend class internal::TemplatedBidiStreamingHandler<
-      ServerUnaryStreamer<RequestType, ResponseType>, true>;
-  ServerUnaryStreamer(grpc::internal::Call* call, grpc::ServerContext* ctx)
-      : body_(call, ctx), read_done_(false), write_done_(false) {}
-};
-
-/// A class to represent a flow-controlled server-side streaming call.
-/// This is something of a hybrid between server-side and bidi streaming.
-/// This is invoked through a server-side streaming call on the client side,
-/// but the server responds to it as though it were a bidi streaming call that
-/// must first have exactly 1 Read and then any number of Writes.
-template <class RequestType, class ResponseType>
-class ServerSplitStreamer final
-    : public ServerReaderWriterInterface<ResponseType, RequestType> {
- public:
-  /// Block to send initial metadata to client.
-  /// Implicit input parameter:
-  ///    - the \a ServerContext associated with this call will be used for
-  ///      sending initial metadata.
-  void SendInitialMetadata() override { body_.SendInitialMetadata(); }
-
-  /// Get an upper bound on the request message size from the client.
-  bool NextMessageSize(uint32_t* sz) override {
-    return body_.NextMessageSize(sz);
-  }
-
-  /// Read a message of type \a R into \a msg. Completion will be notified by \a
-  /// tag on the associated completion queue.
-  /// This is thread-safe with respect to \a Write or \a WritesDone methods. It
-  /// should not be called concurrently with other streaming APIs
-  /// on the same stream. It is not meaningful to call it concurrently
-  /// with another \a ReaderInterface::Read on the same stream since reads on
-  /// the same stream are delivered in order.
-  ///
-  /// \param[out] msg Where to eventually store the read message.
-  /// \param[in] tag The tag identifying the operation.
-  bool Read(RequestType* request) override {
-    if (read_done_) {
-      return false;
-    }
-    read_done_ = true;
-    return body_.Read(request);
-  }
-
-  /// Block to write \a msg to the stream with WriteOptions \a options.
-  /// This is thread-safe with respect to \a ReaderInterface::Read
-  ///
-  /// \param msg The message to be written to the stream.
-  /// \param options The WriteOptions affecting the write operation.
-  ///
-  /// \return \a true on success, \a false when the stream has been closed.
-  using internal::WriterInterface<ResponseType>::Write;
-  bool Write(const ResponseType& response,
-             grpc::WriteOptions options) override {
-    return read_done_ && body_.Write(response, options);
-  }
-
- private:
-  internal::ServerReaderWriterBody<ResponseType, RequestType> body_;
-  bool read_done_;
-
-  friend class internal::TemplatedBidiStreamingHandler<
-      ServerSplitStreamer<RequestType, ResponseType>, false>;
-  ServerSplitStreamer(grpc::internal::Call* call, grpc::ServerContext* ctx)
-      : body_(call, ctx), read_done_(false) {}
-};
-
-}  // namespace grpc
-
-#endif  // GRPCPP_IMPL_CODEGEN_SYNC_STREAM_H
diff --git a/contrib/libs/grpc/include/grpcpp/impl/codegen/time.h b/contrib/libs/grpc/include/grpcpp/impl/codegen/time.h
index 41bf69f376..71aeed8c78 100644
--- a/contrib/libs/grpc/include/grpcpp/impl/codegen/time.h
+++ b/contrib/libs/grpc/include/grpcpp/impl/codegen/time.h
@@ -1,20 +1,20 @@
-/*
- *
- * Copyright 2015 gRPC authors.
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
- */
+//
+//
+// Copyright 2015 gRPC authors.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+//
 
 #ifndef GRPCPP_IMPL_CODEGEN_TIME_H
 #define GRPCPP_IMPL_CODEGEN_TIME_H
@@ -23,73 +23,9 @@
 #pragma GCC system_header
 #endif
 
-// IWYU pragma: private, include <grpcpp/support/time.h>
+// IWYU pragma: private
 
-#include <chrono>
-
-#include <grpc/impl/codegen/grpc_types.h>
-#include <grpcpp/impl/codegen/config.h>
-
-namespace grpc {
-
-/** If you are trying to use CompletionQueue::AsyncNext with a time class that
-    isn't either gpr_timespec or std::chrono::system_clock::time_point, you
-    will most likely be looking at this comment as your compiler will have
-    fired an error below. In order to fix this issue, you have two potential
-    solutions:
-
-      1. Use gpr_timespec or std::chrono::system_clock::time_point instead
-      2. Specialize the TimePoint class with whichever time class that you
-         want to use here. See below for two examples of how to do this.
- */
-template <typename T>
-class TimePoint {
- public:
-  // If you see the error with methods below, you may need either
-  // i) using the existing types having a conversion class such as
-  // gpr_timespec and std::chrono::system_clock::time_point or
-  // ii) writing a new TimePoint<YourType> to address your case.
-  TimePoint(const T& /*time*/) = delete;
-  gpr_timespec raw_time() = delete;
-};
-
-template <>
-class TimePoint<gpr_timespec> {
- public:
-  /* NOLINTNEXTLINE(google-explicit-constructor) */
-  TimePoint(const gpr_timespec& time) : time_(time) {}
-  gpr_timespec raw_time() { return time_; }
-
- private:
-  gpr_timespec time_;
-};
-
-}  // namespace grpc
-
-namespace grpc {
-
-// from and to should be absolute time.
-void Timepoint2Timespec(const std::chrono::system_clock::time_point& from,
-                        gpr_timespec* to);
-void TimepointHR2Timespec(
-    const std::chrono::high_resolution_clock::time_point& from,
-    gpr_timespec* to);
-
-std::chrono::system_clock::time_point Timespec2Timepoint(gpr_timespec t);
-
-template <>
-class TimePoint<std::chrono::system_clock::time_point> {
- public:
-  /* NOLINTNEXTLINE(google-explicit-constructor) */
-  TimePoint(const std::chrono::system_clock::time_point& time) {
-    Timepoint2Timespec(time, &time_);
-  }
-  gpr_timespec raw_time() const { return time_; }
-
- private:
-  gpr_timespec time_;
-};
-
-}  // namespace grpc
+/// TODO(chengyuc): Remove this file after solving compatibility.
+#include <grpcpp/support/time.h>
 
 #endif  // GRPCPP_IMPL_CODEGEN_TIME_H
diff --git a/contrib/libs/grpc/include/grpcpp/impl/codegen/completion_queue_tag.h b/contrib/libs/grpc/include/grpcpp/impl/completion_queue_tag.h
index 9af470b750..bb1fa96087 100644
--- a/contrib/libs/grpc/include/grpcpp/impl/codegen/completion_queue_tag.h
+++ b/contrib/libs/grpc/include/grpcpp/impl/completion_queue_tag.h
@@ -1,25 +1,23 @@
-/*
- *
- * Copyright 2015 gRPC authors.
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
- */
+//
+//
+// Copyright 2015 gRPC authors.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+//
 
-#ifndef GRPCPP_IMPL_CODEGEN_COMPLETION_QUEUE_TAG_H
-#define GRPCPP_IMPL_CODEGEN_COMPLETION_QUEUE_TAG_H
-
-// IWYU pragma: private
+#ifndef GRPCPP_IMPL_COMPLETION_QUEUE_TAG_H
+#define GRPCPP_IMPL_COMPLETION_QUEUE_TAG_H
 
 namespace grpc {
 
@@ -53,4 +51,4 @@ class CompletionQueueTag {
 
 }  // namespace grpc
 
-#endif  // GRPCPP_IMPL_CODEGEN_COMPLETION_QUEUE_TAG_H
+#endif  // GRPCPP_IMPL_COMPLETION_QUEUE_TAG_H
diff --git a/contrib/libs/grpc/include/grpcpp/impl/create_auth_context.h b/contrib/libs/grpc/include/grpcpp/impl/create_auth_context.h
new file mode 100644
index 0000000000..10844bec92
--- /dev/null
+++ b/contrib/libs/grpc/include/grpcpp/impl/create_auth_context.h
@@ -0,0 +1,34 @@
+//
+//
+// Copyright 2015 gRPC authors.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+//
+
+#ifndef GRPCPP_IMPL_CREATE_AUTH_CONTEXT_H
+#define GRPCPP_IMPL_CREATE_AUTH_CONTEXT_H
+
+#include <memory>
+
+#include <grpc/impl/grpc_types.h>
+#include <grpcpp/security/auth_context.h>
+
+namespace grpc {
+
+/// TODO(ctiller): not sure we want to make this a permanent thing
+std::shared_ptr<const AuthContext> CreateAuthContext(grpc_call* call);
+
+}  // namespace grpc
+
+#endif  // GRPCPP_IMPL_CREATE_AUTH_CONTEXT_H
diff --git a/contrib/libs/grpc/include/grpcpp/impl/grpc_library.h b/contrib/libs/grpc/include/grpcpp/impl/grpc_library.h
index 0afca8e46f..6f20d2bf41 100644
--- a/contrib/libs/grpc/include/grpcpp/impl/grpc_library.h
+++ b/contrib/libs/grpc/include/grpcpp/impl/grpc_library.h
@@ -1,20 +1,20 @@
-/*
- *
- * Copyright 2015 gRPC authors.
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
- */
+//
+//
+// Copyright 2015 gRPC authors.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+//
 
 #ifndef GRPCPP_IMPL_GRPC_LIBRARY_H
 #define GRPCPP_IMPL_GRPC_LIBRARY_H
@@ -23,35 +23,28 @@
 
 #include <grpc/grpc.h>
 #include <grpcpp/impl/codegen/config.h>
-#include <grpcpp/impl/codegen/core_codegen.h>
-#include <grpcpp/impl/codegen/grpc_library.h>  // IWYU pragma: export
 
 namespace grpc {
 
 namespace internal {
-class GrpcLibrary final : public GrpcLibraryInterface {
- public:
-  void init() override { grpc_init(); }
-  void shutdown() override { grpc_shutdown(); }
-};
 
-/// Instantiating this class ensures the proper initialization of gRPC.
-class GrpcLibraryInitializer final {
+/// Classes that require gRPC to be initialized should inherit from this class.
+class GrpcLibrary {
  public:
-  GrpcLibraryInitializer() {
-    if (grpc::g_glip == nullptr) {
-      static auto* const g_gli = new GrpcLibrary();
-      grpc::g_glip = g_gli;
+  explicit GrpcLibrary(bool call_grpc_init = true) : grpc_init_called_(false) {
+    if (call_grpc_init) {
+      grpc_init();
+      grpc_init_called_ = true;
     }
-    if (grpc::g_core_codegen_interface == nullptr) {
-      static auto* const g_core_codegen = new CoreCodegen();
-      grpc::g_core_codegen_interface = g_core_codegen;
+  }
+  virtual ~GrpcLibrary() {
+    if (grpc_init_called_) {
+      grpc_shutdown();
     }
   }
 
-  /// A no-op method to force the linker to reference this class, which will
-  /// take care of initializing and shutting down the gRPC runtime.
-  int summon() { return 0; }
+ private:
+  bool grpc_init_called_;
 };
 
 }  // namespace internal
diff --git a/contrib/libs/grpc/include/grpcpp/impl/intercepted_channel.h b/contrib/libs/grpc/include/grpcpp/impl/intercepted_channel.h
new file mode 100644
index 0000000000..908655a6e4
--- /dev/null
+++ b/contrib/libs/grpc/include/grpcpp/impl/intercepted_channel.h
@@ -0,0 +1,83 @@
+//
+//
+// Copyright 2018 gRPC authors.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+//
+
+#ifndef GRPCPP_IMPL_INTERCEPTED_CHANNEL_H
+#define GRPCPP_IMPL_INTERCEPTED_CHANNEL_H
+
+#include <grpcpp/impl/channel_interface.h>
+
+namespace grpc {
+class CompletionQueue;
+
+namespace internal {
+
+class InterceptorBatchMethodsImpl;
+
+/// An InterceptedChannel is available to client Interceptors. An
+/// InterceptedChannel is unique to an interceptor, and when an RPC is started
+/// on this channel, only those interceptors that come after this interceptor
+/// see the RPC.
+class InterceptedChannel : public ChannelInterface {
+ public:
+  ~InterceptedChannel() override { channel_ = nullptr; }
+
+  /// Get the current channel state. If the channel is in IDLE and
+  /// \a try_to_connect is set to true, try to connect.
+  grpc_connectivity_state GetState(bool try_to_connect) override {
+    return channel_->GetState(try_to_connect);
+  }
+
+ private:
+  InterceptedChannel(ChannelInterface* channel, size_t pos)
+      : channel_(channel), interceptor_pos_(pos) {}
+
+  Call CreateCall(const RpcMethod& method, grpc::ClientContext* context,
+                  grpc::CompletionQueue* cq) override {
+    return channel_->CreateCallInternal(method, context, cq, interceptor_pos_);
+  }
+
+  void PerformOpsOnCall(CallOpSetInterface* ops, Call* call) override {
+    return channel_->PerformOpsOnCall(ops, call);
+  }
+  void* RegisterMethod(const char* method) override {
+    return channel_->RegisterMethod(method);
+  }
+
+  void NotifyOnStateChangeImpl(grpc_connectivity_state last_observed,
+                               gpr_timespec deadline, grpc::CompletionQueue* cq,
+                               void* tag) override {
+    return channel_->NotifyOnStateChangeImpl(last_observed, deadline, cq, tag);
+  }
+  bool WaitForStateChangeImpl(grpc_connectivity_state last_observed,
+                              gpr_timespec deadline) override {
+    return channel_->WaitForStateChangeImpl(last_observed, deadline);
+  }
+
+  grpc::CompletionQueue* CallbackCQ() override {
+    return channel_->CallbackCQ();
+  }
+
+  ChannelInterface* channel_;
+  size_t interceptor_pos_;
+
+  friend class InterceptorBatchMethodsImpl;
+};
+}  // namespace internal
+}  // namespace grpc
+
+#endif  // GRPCPP_IMPL_INTERCEPTED_CHANNEL_H
diff --git a/contrib/libs/grpc/include/grpcpp/impl/interceptor_common.h b/contrib/libs/grpc/include/grpcpp/impl/interceptor_common.h
new file mode 100644
index 0000000000..59aa8add44
--- /dev/null
+++ b/contrib/libs/grpc/include/grpcpp/impl/interceptor_common.h
@@ -0,0 +1,536 @@
+//
+//
+// Copyright 2018 gRPC authors.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+//
+
+#ifndef GRPCPP_IMPL_INTERCEPTOR_COMMON_H
+#define GRPCPP_IMPL_INTERCEPTOR_COMMON_H
+
+#include <array>
+#include <functional>
+
+#include <grpc/impl/grpc_types.h>
+#include <grpc/support/log.h>
+#include <grpcpp/impl/call.h>
+#include <grpcpp/impl/call_op_set_interface.h>
+#include <grpcpp/impl/intercepted_channel.h>
+#include <grpcpp/support/client_interceptor.h>
+#include <grpcpp/support/server_interceptor.h>
+
+namespace grpc {
+namespace internal {
+
+class InterceptorBatchMethodsImpl
+    : public experimental::InterceptorBatchMethods {
+ public:
+  InterceptorBatchMethodsImpl() {
+    for (auto i = static_cast<experimental::InterceptionHookPoints>(0);
+         i < experimental::InterceptionHookPoints::NUM_INTERCEPTION_HOOKS;
+         i = static_cast<experimental::InterceptionHookPoints>(
+             static_cast<size_t>(i) + 1)) {
+      hooks_[static_cast<size_t>(i)] = false;
+    }
+  }
+
+  ~InterceptorBatchMethodsImpl() override {}
+
+  bool QueryInterceptionHookPoint(
+      experimental::InterceptionHookPoints type) override {
+    return hooks_[static_cast<size_t>(type)];
+  }
+
+  void Proceed() override {
+    if (call_->client_rpc_info() != nullptr) {
+      return ProceedClient();
+    }
+    GPR_ASSERT(call_->server_rpc_info() != nullptr);
+    ProceedServer();
+  }
+
+  void Hijack() override {
+    // Only the client can hijack when sending down initial metadata
+    GPR_ASSERT(!reverse_ && ops_ != nullptr &&
+               call_->client_rpc_info() != nullptr);
+    // It is illegal to call Hijack twice
+    GPR_ASSERT(!ran_hijacking_interceptor_);
+    auto* rpc_info = call_->client_rpc_info();
+    rpc_info->hijacked_ = true;
+    rpc_info->hijacked_interceptor_ = current_interceptor_index_;
+    ClearHookPoints();
+    ops_->SetHijackingState();
+    ran_hijacking_interceptor_ = true;
+    rpc_info->RunInterceptor(this, current_interceptor_index_);
+  }
+
+  void AddInterceptionHookPoint(experimental::InterceptionHookPoints type) {
+    hooks_[static_cast<size_t>(type)] = true;
+  }
+
+  ByteBuffer* GetSerializedSendMessage() override {
+    GPR_ASSERT(orig_send_message_ != nullptr);
+    if (*orig_send_message_ != nullptr) {
+      GPR_ASSERT(serializer_(*orig_send_message_).ok());
+      *orig_send_message_ = nullptr;
+    }
+    return send_message_;
+  }
+
+  const void* GetSendMessage() override {
+    GPR_ASSERT(orig_send_message_ != nullptr);
+    return *orig_send_message_;
+  }
+
+  void ModifySendMessage(const void* message) override {
+    GPR_ASSERT(orig_send_message_ != nullptr);
+    *orig_send_message_ = message;
+  }
+
+  bool GetSendMessageStatus() override { return !*fail_send_message_; }
+
+  std::multimap<TString, TString>* GetSendInitialMetadata() override {
+    return send_initial_metadata_;
+  }
+
+  Status GetSendStatus() override {
+    return Status(static_cast<StatusCode>(*code_), *error_message_,
+                  *error_details_);
+  }
+
+  void ModifySendStatus(const Status& status) override {
+    *code_ = static_cast<grpc_status_code>(status.error_code());
+    *error_details_ = status.error_details();
+    *error_message_ = status.error_message();
+  }
+
+  std::multimap<TString, TString>* GetSendTrailingMetadata() override {
+    return send_trailing_metadata_;
+  }
+
+  void* GetRecvMessage() override { return recv_message_; }
+
+  std::multimap<grpc::string_ref, grpc::string_ref>* GetRecvInitialMetadata()
+      override {
+    return recv_initial_metadata_->map();
+  }
+
+  Status* GetRecvStatus() override { return recv_status_; }
+
+  void FailHijackedSendMessage() override {
+    GPR_ASSERT(hooks_[static_cast<size_t>(
+        experimental::InterceptionHookPoints::PRE_SEND_MESSAGE)]);
+    *fail_send_message_ = true;
+  }
+
+  std::multimap<grpc::string_ref, grpc::string_ref>* GetRecvTrailingMetadata()
+      override {
+    return recv_trailing_metadata_->map();
+  }
+
+  void SetSendMessage(ByteBuffer* buf, const void** msg,
+                      bool* fail_send_message,
+                      std::function<Status(const void*)> serializer) {
+    send_message_ = buf;
+    orig_send_message_ = msg;
+    fail_send_message_ = fail_send_message;
+    serializer_ = serializer;
+  }
+
+  void SetSendInitialMetadata(
+      std::multimap<TString, TString>* metadata) {
+    send_initial_metadata_ = metadata;
+  }
+
+  void SetSendStatus(grpc_status_code* code, TString* error_details,
+                     TString* error_message) {
+    code_ = code;
+    error_details_ = error_details;
+    error_message_ = error_message;
+  }
+
+  void SetSendTrailingMetadata(
+      std::multimap<TString, TString>* metadata) {
+    send_trailing_metadata_ = metadata;
+  }
+
+  void SetRecvMessage(void* message, bool* hijacked_recv_message_failed) {
+    recv_message_ = message;
+    hijacked_recv_message_failed_ = hijacked_recv_message_failed;
+  }
+
+  void SetRecvInitialMetadata(MetadataMap* map) {
+    recv_initial_metadata_ = map;
+  }
+
+  void SetRecvStatus(Status* status) { recv_status_ = status; }
+
+  void SetRecvTrailingMetadata(MetadataMap* map) {
+    recv_trailing_metadata_ = map;
+  }
+
+  std::unique_ptr<ChannelInterface> GetInterceptedChannel() override {
+    auto* info = call_->client_rpc_info();
+    if (info == nullptr) {
+      return std::unique_ptr<ChannelInterface>(nullptr);
+    }
+    // The intercepted channel starts from the interceptor just after the
+    // current interceptor
+    return std::unique_ptr<ChannelInterface>(new InterceptedChannel(
+        info->channel(), current_interceptor_index_ + 1));
+  }
+
+  void FailHijackedRecvMessage() override {
+    GPR_ASSERT(hooks_[static_cast<size_t>(
+        experimental::InterceptionHookPoints::PRE_RECV_MESSAGE)]);
+    *hijacked_recv_message_failed_ = true;
+  }
+
+  // Clears all state
+  void ClearState() {
+    reverse_ = false;
+    ran_hijacking_interceptor_ = false;
+    ClearHookPoints();
+  }
+
+  // Prepares for Post_recv operations
+  void SetReverse() {
+    reverse_ = true;
+    ran_hijacking_interceptor_ = false;
+    ClearHookPoints();
+  }
+
+  // This needs to be set before interceptors are run
+  void SetCall(Call* call) { call_ = call; }
+
+  // This needs to be set before interceptors are run using RunInterceptors().
+  // Alternatively, RunInterceptors(std::function<void(void)> f) can be used.
+  void SetCallOpSetInterface(CallOpSetInterface* ops) { ops_ = ops; }
+
+  // SetCall should have been called before this.
+  // Returns true if the interceptors list is empty
+  bool InterceptorsListEmpty() {
+    auto* client_rpc_info = call_->client_rpc_info();
+    if (client_rpc_info != nullptr) {
+      return client_rpc_info->interceptors_.empty();
+    }
+
+    auto* server_rpc_info = call_->server_rpc_info();
+    return server_rpc_info == nullptr || server_rpc_info->interceptors_.empty();
+  }
+
+  // This should be used only by subclasses of CallOpSetInterface. SetCall and
+  // SetCallOpSetInterface should have been called before this. After all the
+  // interceptors are done running, either ContinueFillOpsAfterInterception or
+  // ContinueFinalizeOpsAfterInterception will be called. Note that neither of
+  // them is invoked if there were no interceptors registered.
+  bool RunInterceptors() {
+    GPR_ASSERT(ops_);
+    auto* client_rpc_info = call_->client_rpc_info();
+    if (client_rpc_info != nullptr) {
+      if (client_rpc_info->interceptors_.empty()) {
+        return true;
+      } else {
+        RunClientInterceptors();
+        return false;
+      }
+    }
+
+    auto* server_rpc_info = call_->server_rpc_info();
+    if (server_rpc_info == nullptr || server_rpc_info->interceptors_.empty()) {
+      return true;
+    }
+    RunServerInterceptors();
+    return false;
+  }
+
+  // Returns true if no interceptors are run. Returns false otherwise if there
+  // are interceptors registered. After the interceptors are done running \a f
+  // will be invoked. This is to be used only by BaseAsyncRequest and
+  // SyncRequest.
+  bool RunInterceptors(std::function<void(void)> f) {
+    // This is used only by the server for initial call request
+    GPR_ASSERT(reverse_ == true);
+    GPR_ASSERT(call_->client_rpc_info() == nullptr);
+    auto* server_rpc_info = call_->server_rpc_info();
+    if (server_rpc_info == nullptr || server_rpc_info->interceptors_.empty()) {
+      return true;
+    }
+    callback_ = std::move(f);
+    RunServerInterceptors();
+    return false;
+  }
+
+ private:
+  void RunClientInterceptors() {
+    auto* rpc_info = call_->client_rpc_info();
+    if (!reverse_) {
+      current_interceptor_index_ = 0;
+    } else {
+      if (rpc_info->hijacked_) {
+        current_interceptor_index_ = rpc_info->hijacked_interceptor_;
+      } else {
+        current_interceptor_index_ = rpc_info->interceptors_.size() - 1;
+      }
+    }
+    rpc_info->RunInterceptor(this, current_interceptor_index_);
+  }
+
+  void RunServerInterceptors() {
+    auto* rpc_info = call_->server_rpc_info();
+    if (!reverse_) {
+      current_interceptor_index_ = 0;
+    } else {
+      current_interceptor_index_ = rpc_info->interceptors_.size() - 1;
+    }
+    rpc_info->RunInterceptor(this, current_interceptor_index_);
+  }
+
+  void ProceedClient() {
+    auto* rpc_info = call_->client_rpc_info();
+    if (rpc_info->hijacked_ && !reverse_ &&
+        current_interceptor_index_ == rpc_info->hijacked_interceptor_ &&
+        !ran_hijacking_interceptor_) {
+      // We now need to provide hijacked recv ops to this interceptor
+      ClearHookPoints();
+      ops_->SetHijackingState();
+      ran_hijacking_interceptor_ = true;
+      rpc_info->RunInterceptor(this, current_interceptor_index_);
+      return;
+    }
+    if (!reverse_) {
+      current_interceptor_index_++;
+      // We are going down the stack of interceptors
+      if (current_interceptor_index_ < rpc_info->interceptors_.size()) {
+        if (rpc_info->hijacked_ &&
+            current_interceptor_index_ > rpc_info->hijacked_interceptor_) {
+          // This is a hijacked RPC and we are done with hijacking
+          ops_->ContinueFillOpsAfterInterception();
+        } else {
+          rpc_info->RunInterceptor(this, current_interceptor_index_);
+        }
+      } else {
+        // we are done running all the interceptors without any hijacking
+        ops_->ContinueFillOpsAfterInterception();
+      }
+    } else {
+      // We are going up the stack of interceptors
+      if (current_interceptor_index_ > 0) {
+        // Continue running interceptors
+        current_interceptor_index_--;
+        rpc_info->RunInterceptor(this, current_interceptor_index_);
+      } else {
+        // we are done running all the interceptors without any hijacking
+        ops_->ContinueFinalizeResultAfterInterception();
+      }
+    }
+  }
+
+  void ProceedServer() {
+    auto* rpc_info = call_->server_rpc_info();
+    if (!reverse_) {
+      current_interceptor_index_++;
+      if (current_interceptor_index_ < rpc_info->interceptors_.size()) {
+        return rpc_info->RunInterceptor(this, current_interceptor_index_);
+      } else if (ops_) {
+        return ops_->ContinueFillOpsAfterInterception();
+      }
+    } else {
+      // We are going up the stack of interceptors
+      if (current_interceptor_index_ > 0) {
+        // Continue running interceptors
+        current_interceptor_index_--;
+        return rpc_info->RunInterceptor(this, current_interceptor_index_);
+      } else if (ops_) {
+        return ops_->ContinueFinalizeResultAfterInterception();
+      }
+    }
+    GPR_ASSERT(callback_);
+    callback_();
+  }
+
+  void ClearHookPoints() {
+    for (auto i = static_cast<experimental::InterceptionHookPoints>(0);
+         i < experimental::InterceptionHookPoints::NUM_INTERCEPTION_HOOKS;
+         i = static_cast<experimental::InterceptionHookPoints>(
+             static_cast<size_t>(i) + 1)) {
+      hooks_[static_cast<size_t>(i)] = false;
+    }
+  }
+
+  std::array<bool,
+             static_cast<size_t>(
+                 experimental::InterceptionHookPoints::NUM_INTERCEPTION_HOOKS)>
+      hooks_;
+
+  size_t current_interceptor_index_ = 0;  // Current iterator
+  bool reverse_ = false;
+  bool ran_hijacking_interceptor_ = false;
+  Call* call_ = nullptr;  // The Call object is present along with CallOpSet
+                          // object/callback
+  CallOpSetInterface* ops_ = nullptr;
+  std::function<void(void)> callback_;
+
+  ByteBuffer* send_message_ = nullptr;
+  bool* fail_send_message_ = nullptr;
+  const void** orig_send_message_ = nullptr;
+  std::function<Status(const void*)> serializer_;
+
+  std::multimap<TString, TString>* send_initial_metadata_;
+
+  grpc_status_code* code_ = nullptr;
+  TString* error_details_ = nullptr;
+  TString* error_message_ = nullptr;
+
+  std::multimap<TString, TString>* send_trailing_metadata_ = nullptr;
+
+  void* recv_message_ = nullptr;
+  bool* hijacked_recv_message_failed_ = nullptr;
+
+  MetadataMap* recv_initial_metadata_ = nullptr;
+
+  Status* recv_status_ = nullptr;
+
+  MetadataMap* recv_trailing_metadata_ = nullptr;
+};
+
+// A special implementation of InterceptorBatchMethods to send a Cancel
+// notification down the interceptor stack
+class CancelInterceptorBatchMethods
+    : public experimental::InterceptorBatchMethods {
+ public:
+  bool QueryInterceptionHookPoint(
+      experimental::InterceptionHookPoints type) override {
+    return type == experimental::InterceptionHookPoints::PRE_SEND_CANCEL;
+  }
+
+  void Proceed() override {
+    // This is a no-op. For actual continuation of the RPC simply needs to
+    // return from the Intercept method
+  }
+
+  void Hijack() override {
+    // Only the client can hijack when sending down initial metadata
+    GPR_ASSERT(false &&
+               "It is illegal to call Hijack on a method which has a "
+               "Cancel notification");
+  }
+
+  ByteBuffer* GetSerializedSendMessage() override {
+    GPR_ASSERT(false &&
+               "It is illegal to call GetSendMessage on a method which "
+               "has a Cancel notification");
+    return nullptr;
+  }
+
+  bool GetSendMessageStatus() override {
+    GPR_ASSERT(false &&
+               "It is illegal to call GetSendMessageStatus on a method which "
+               "has a Cancel notification");
+    return false;
+  }
+
+  const void* GetSendMessage() override {
+    GPR_ASSERT(false &&
+               "It is illegal to call GetOriginalSendMessage on a method which "
+               "has a Cancel notification");
+    return nullptr;
+  }
+
+  void ModifySendMessage(const void* /*message*/) override {
+    GPR_ASSERT(false &&
+               "It is illegal to call ModifySendMessage on a method which "
+               "has a Cancel notification");
+  }
+
+  std::multimap<TString, TString>* GetSendInitialMetadata() override {
+    GPR_ASSERT(false &&
+               "It is illegal to call GetSendInitialMetadata on a "
+               "method which has a Cancel notification");
+    return nullptr;
+  }
+
+  Status GetSendStatus() override {
+    GPR_ASSERT(false &&
+               "It is illegal to call GetSendStatus on a method which "
+               "has a Cancel notification");
+    return Status();
+  }
+
+  void ModifySendStatus(const Status& /*status*/) override {
+    GPR_ASSERT(false &&
+               "It is illegal to call ModifySendStatus on a method "
+               "which has a Cancel notification");
+  }
+
+  std::multimap<TString, TString>* GetSendTrailingMetadata() override {
+    GPR_ASSERT(false &&
+               "It is illegal to call GetSendTrailingMetadata on a "
+               "method which has a Cancel notification");
+    return nullptr;
+  }
+
+  void* GetRecvMessage() override {
+    GPR_ASSERT(false &&
+               "It is illegal to call GetRecvMessage on a method which "
+               "has a Cancel notification");
+    return nullptr;
+  }
+
+  std::multimap<grpc::string_ref, grpc::string_ref>* GetRecvInitialMetadata()
+      override {
+    GPR_ASSERT(false &&
+               "It is illegal to call GetRecvInitialMetadata on a "
+               "method which has a Cancel notification");
+    return nullptr;
+  }
+
+  Status* GetRecvStatus() override {
+    GPR_ASSERT(false &&
+               "It is illegal to call GetRecvStatus on a method which "
+               "has a Cancel notification");
+    return nullptr;
+  }
+
+  std::multimap<grpc::string_ref, grpc::string_ref>* GetRecvTrailingMetadata()
+      override {
+    GPR_ASSERT(false &&
+               "It is illegal to call GetRecvTrailingMetadata on a "
+               "method which has a Cancel notification");
+    return nullptr;
+  }
+
+  std::unique_ptr<ChannelInterface> GetInterceptedChannel() override {
+    GPR_ASSERT(false &&
+               "It is illegal to call GetInterceptedChannel on a "
+               "method which has a Cancel notification");
+    return std::unique_ptr<ChannelInterface>(nullptr);
+  }
+
+  void FailHijackedRecvMessage() override {
+    GPR_ASSERT(false &&
+               "It is illegal to call FailHijackedRecvMessage on a "
+               "method which has a Cancel notification");
+  }
+
+  void FailHijackedSendMessage() override {
+    GPR_ASSERT(false &&
+               "It is illegal to call FailHijackedSendMessage on a "
+               "method which has a Cancel notification");
+  }
+};
+}  // namespace internal
+}  // namespace grpc
+
+#endif  // GRPCPP_IMPL_INTERCEPTOR_COMMON_H
diff --git a/contrib/libs/grpc/include/grpcpp/impl/metadata_map.h b/contrib/libs/grpc/include/grpcpp/impl/metadata_map.h
new file mode 100644
index 0000000000..17ce95c27a
--- /dev/null
+++ b/contrib/libs/grpc/include/grpcpp/impl/metadata_map.h
@@ -0,0 +1,104 @@
+//
+//
+// Copyright 2015 gRPC authors.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+//
+
+#ifndef GRPCPP_IMPL_METADATA_MAP_H
+#define GRPCPP_IMPL_METADATA_MAP_H
+
+#include <map>
+
+#include <grpc/grpc.h>
+#include <grpc/support/log.h>
+#include <grpcpp/support/slice.h>
+
+namespace grpc {
+
+namespace internal {
+
+const char kBinaryErrorDetailsKey[] = "grpc-status-details-bin";
+
+class MetadataMap {
+ public:
+  MetadataMap() { Setup(); }
+
+  ~MetadataMap() { Destroy(); }
+
+  TString GetBinaryErrorDetails() {
+    // if filled_, extract from the multimap for O(log(n))
+    if (filled_) {
+      auto iter = map_.find(kBinaryErrorDetailsKey);
+      if (iter != map_.end()) {
+        return TString(iter->second.begin(), iter->second.length());
+      }
+    }
+    // if not yet filled, take the O(n) lookup to avoid allocating the
+    // multimap until it is requested.
+    // TODO(ncteisen): plumb this through core as a first class object, just
+    // like code and message.
+    else {
+      for (size_t i = 0; i < arr_.count; i++) {
+        if (strncmp(reinterpret_cast<const char*>(
+                        GRPC_SLICE_START_PTR(arr_.metadata[i].key)),
+                    kBinaryErrorDetailsKey,
+                    GRPC_SLICE_LENGTH(arr_.metadata[i].key)) == 0) {
+          return TString(reinterpret_cast<const char*>(
+                                 GRPC_SLICE_START_PTR(arr_.metadata[i].value)),
+                             GRPC_SLICE_LENGTH(arr_.metadata[i].value));
+        }
+      }
+    }
+    return TString();
+  }
+
+  std::multimap<grpc::string_ref, grpc::string_ref>* map() {
+    FillMap();
+    return &map_;
+  }
+  grpc_metadata_array* arr() { return &arr_; }
+
+  void Reset() {
+    filled_ = false;
+    map_.clear();
+    Destroy();
+    Setup();
+  }
+
+ private:
+  bool filled_ = false;
+  grpc_metadata_array arr_;
+  std::multimap<grpc::string_ref, grpc::string_ref> map_;
+
+  void Destroy() { grpc_metadata_array_destroy(&arr_); }
+
+  void Setup() { memset(&arr_, 0, sizeof(arr_)); }
+
+  void FillMap() {
+    if (filled_) return;
+    filled_ = true;
+    for (size_t i = 0; i < arr_.count; i++) {
+      // TODO(yangg) handle duplicates?
+      map_.insert(std::pair<grpc::string_ref, grpc::string_ref>(
+          StringRefFromSlice(&arr_.metadata[i].key),
+          StringRefFromSlice(&arr_.metadata[i].value)));
+    }
+  }
+};
+}  // namespace internal
+
+}  // namespace grpc
+
+#endif  // GRPCPP_IMPL_METADATA_MAP_H
diff --git a/contrib/libs/grpc/include/grpcpp/impl/proto_utils.h b/contrib/libs/grpc/include/grpcpp/impl/proto_utils.h
new file mode 100644
index 0000000000..c6240ffa84
--- /dev/null
+++ b/contrib/libs/grpc/include/grpcpp/impl/proto_utils.h
@@ -0,0 +1,117 @@
+//
+//
+// Copyright 2015 gRPC authors.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+//
+
+#ifndef GRPCPP_IMPL_PROTO_UTILS_H
+#define GRPCPP_IMPL_PROTO_UTILS_H
+
+#include <type_traits>
+
+#include <grpc/byte_buffer_reader.h>
+#include <grpc/impl/grpc_types.h>
+#include <grpc/slice.h>
+#include <grpc/support/log.h>
+#include <grpcpp/impl/codegen/config_protobuf.h>
+#include <grpcpp/impl/serialization_traits.h>
+#include <grpcpp/support/byte_buffer.h>
+#include <grpcpp/support/proto_buffer_reader.h>
+#include <grpcpp/support/proto_buffer_writer.h>
+#include <grpcpp/support/slice.h>
+#include <grpcpp/support/status.h>
+
+/// This header provides serialization and deserialization between gRPC
+/// messages serialized using protobuf and the C++ objects they represent.
+
+namespace grpc {
+
+// ProtoBufferWriter must be a subclass of ::protobuf::io::ZeroCopyOutputStream.
+template <class ProtoBufferWriter, class T>
+Status GenericSerialize(const grpc::protobuf::MessageLite& msg, ByteBuffer* bb,
+                        bool* own_buffer) {
+  static_assert(std::is_base_of<protobuf::io::ZeroCopyOutputStream,
+                                ProtoBufferWriter>::value,
+                "ProtoBufferWriter must be a subclass of "
+                "::protobuf::io::ZeroCopyOutputStream");
+  *own_buffer = true;
+  int byte_size = static_cast<int>(msg.ByteSizeLong());
+  if (static_cast<size_t>(byte_size) <= GRPC_SLICE_INLINED_SIZE) {
+    Slice slice(byte_size);
+    // We serialize directly into the allocated slices memory
+    GPR_ASSERT(slice.end() == msg.SerializeWithCachedSizesToArray(
+                                  const_cast<uint8_t*>(slice.begin())));
+    ByteBuffer tmp(&slice, 1);
+    bb->Swap(&tmp);
+
+    return grpc::Status::OK;
+  }
+  ProtoBufferWriter writer(bb, kProtoBufferWriterMaxBufferLength, byte_size);
+  return msg.SerializeToZeroCopyStream(&writer)
+             ? grpc::Status::OK
+             : Status(StatusCode::INTERNAL, "Failed to serialize message");
+}
+
+// BufferReader must be a subclass of ::protobuf::io::ZeroCopyInputStream.
+template <class ProtoBufferReader, class T>
+Status GenericDeserialize(ByteBuffer* buffer,
+                          grpc::protobuf::MessageLite* msg) {
+  static_assert(std::is_base_of<protobuf::io::ZeroCopyInputStream,
+                                ProtoBufferReader>::value,
+                "ProtoBufferReader must be a subclass of "
+                "::protobuf::io::ZeroCopyInputStream");
+  if (buffer == nullptr) {
+    return Status(StatusCode::INTERNAL, "No payload");
+  }
+  Status result = grpc::Status::OK;
+  {
+    ProtoBufferReader reader(buffer);
+    if (!reader.status().ok()) {
+      return reader.status();
+    }
+    if (!msg->ParseFromZeroCopyStream(&reader)) {
+      result = Status(StatusCode::INTERNAL, msg->InitializationErrorString());
+    }
+  }
+  buffer->Clear();
+  return result;
+}
+
+// this is needed so the following class does not conflict with protobuf
+// serializers that utilize internal-only tools.
+#ifdef GRPC_OPEN_SOURCE_PROTO
+// This class provides a protobuf serializer. It translates between protobuf
+// objects and grpc_byte_buffers. More information about SerializationTraits can
+// be found in include/grpcpp/impl/codegen/serialization_traits.h.
+template <class T>
+class SerializationTraits<
+    T, typename std::enable_if<
+           std::is_base_of<grpc::protobuf::MessageLite, T>::value>::type> {
+ public:
+  static Status Serialize(const grpc::protobuf::MessageLite& msg,
+                          ByteBuffer* bb, bool* own_buffer) {
+    return GenericSerialize<ProtoBufferWriter, T>(msg, bb, own_buffer);
+  }
+
+  static Status Deserialize(ByteBuffer* buffer,
+                            grpc::protobuf::MessageLite* msg) {
+    return GenericDeserialize<ProtoBufferReader, T>(buffer, msg);
+  }
+};
+#endif
+
+}  // namespace grpc
+
+#endif  // GRPCPP_IMPL_PROTO_UTILS_H
diff --git a/contrib/libs/grpc/include/grpcpp/impl/rpc_method.h b/contrib/libs/grpc/include/grpcpp/impl/rpc_method.h
index aeef8b778c..e1dcd00336 100644
--- a/contrib/libs/grpc/include/grpcpp/impl/rpc_method.h
+++ b/contrib/libs/grpc/include/grpcpp/impl/rpc_method.h
@@ -1,24 +1,80 @@
-/*
- *
- * Copyright 2015 gRPC authors.
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
- */
+//
+//
+// Copyright 2015 gRPC authors.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+//
 
 #ifndef GRPCPP_IMPL_RPC_METHOD_H
 #define GRPCPP_IMPL_RPC_METHOD_H
 
-#include <grpcpp/impl/codegen/rpc_method.h>  // IWYU pragma: export
+#include <memory>
+
+#include <grpcpp/impl/codegen/channel_interface.h>
+
+namespace grpc {
+namespace internal {
+/// Descriptor of an RPC method
+class RpcMethod {
+ public:
+  enum RpcType {
+    NORMAL_RPC = 0,
+    CLIENT_STREAMING,  // request streaming
+    SERVER_STREAMING,  // response streaming
+    BIDI_STREAMING
+  };
+
+  RpcMethod(const char* name, RpcType type)
+      : name_(name),
+        suffix_for_stats_(nullptr),
+        method_type_(type),
+        channel_tag_(nullptr) {}
+
+  RpcMethod(const char* name, const char* suffix_for_stats, RpcType type)
+      : name_(name),
+        suffix_for_stats_(suffix_for_stats),
+        method_type_(type),
+        channel_tag_(nullptr) {}
+
+  RpcMethod(const char* name, RpcType type,
+            const std::shared_ptr<ChannelInterface>& channel)
+      : name_(name),
+        suffix_for_stats_(nullptr),
+        method_type_(type),
+        channel_tag_(channel->RegisterMethod(name)) {}
+
+  RpcMethod(const char* name, const char* suffix_for_stats, RpcType type,
+            const std::shared_ptr<ChannelInterface>& channel)
+      : name_(name),
+        suffix_for_stats_(suffix_for_stats),
+        method_type_(type),
+        channel_tag_(channel->RegisterMethod(name)) {}
+
+  const char* name() const { return name_; }
+  const char* suffix_for_stats() const { return suffix_for_stats_; }
+  RpcType method_type() const { return method_type_; }
+  void SetMethodType(RpcType type) { method_type_ = type; }
+  void* channel_tag() const { return channel_tag_; }
+
+ private:
+  const char* const name_;
+  const char* const suffix_for_stats_;
+  RpcType method_type_;
+  void* const channel_tag_;
+};
+
+}  // namespace internal
+}  // namespace grpc
 
 #endif  // GRPCPP_IMPL_RPC_METHOD_H
diff --git a/contrib/libs/grpc/include/grpcpp/impl/rpc_service_method.h b/contrib/libs/grpc/include/grpcpp/impl/rpc_service_method.h
index 86cb2dc5a7..73694263cd 100644
--- a/contrib/libs/grpc/include/grpcpp/impl/rpc_service_method.h
+++ b/contrib/libs/grpc/include/grpcpp/impl/rpc_service_method.h
@@ -1,24 +1,153 @@
-/*
- *
- * Copyright 2016 gRPC authors.
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
- */
+//
+//
+// Copyright 2016 gRPC authors.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+//
 
 #ifndef GRPCPP_IMPL_RPC_SERVICE_METHOD_H
 #define GRPCPP_IMPL_RPC_SERVICE_METHOD_H
 
-#include <grpcpp/impl/codegen/rpc_service_method.h>  // IWYU pragma: export
+#include <climits>
+#include <functional>
+#include <map>
+#include <memory>
+#include <vector>
+
+#include <grpc/support/log.h>
+#include <grpcpp/impl/rpc_method.h>
+#include <grpcpp/support/byte_buffer.h>
+#include <grpcpp/support/config.h>
+#include <grpcpp/support/status.h>
+
+namespace grpc {
+class ServerContextBase;
+namespace internal {
+/// Base class for running an RPC handler.
+class MethodHandler {
+ public:
+  virtual ~MethodHandler() {}
+  struct HandlerParameter {
+    /// Constructor for HandlerParameter
+    ///
+    /// \param c : the gRPC Call structure for this server call
+    /// \param context : the ServerContext structure for this server call
+    /// \param req : the request payload, if appropriate for this RPC
+    /// \param req_status : the request status after any interceptors have run
+    /// \param handler_data: internal data for the handler.
+    /// \param requester : used only by the callback API. It is a function
+    ///        called by the RPC Controller to request another RPC (and also
+    ///        to set up the state required to make that request possible)
+    HandlerParameter(Call* c, grpc::ServerContextBase* context, void* req,
+                     Status req_status, void* handler_data,
+                     std::function<void()> requester)
+        : call(c),
+          server_context(context),
+          request(req),
+          status(req_status),
+          internal_data(handler_data),
+          call_requester(std::move(requester)) {}
+    ~HandlerParameter() {}
+    Call* const call;
+    grpc::ServerContextBase* const server_context;
+    void* const request;
+    const Status status;
+    void* const internal_data;
+    const std::function<void()> call_requester;
+  };
+  virtual void RunHandler(const HandlerParameter& param) = 0;
+
+  // Returns a pointer to the deserialized request. \a status reflects the
+  // result of deserialization. This pointer and the status should be filled in
+  // a HandlerParameter and passed to RunHandler. It is illegal to access the
+  // pointer after calling RunHandler. Ownership of the deserialized request is
+  // retained by the handler. Returns nullptr if deserialization failed.
+  virtual void* Deserialize(grpc_call* /*call*/, grpc_byte_buffer* req,
+                            Status* /*status*/, void** /*handler_data*/) {
+    GPR_ASSERT(req == nullptr);
+    return nullptr;
+  }
+};
+
+/// Server side rpc method class
+class RpcServiceMethod : public RpcMethod {
+ public:
+  /// Takes ownership of the handler
+  RpcServiceMethod(const char* name, RpcMethod::RpcType type,
+                   MethodHandler* handler)
+      : RpcMethod(name, type),
+        server_tag_(nullptr),
+        api_type_(ApiType::SYNC),
+        handler_(handler) {}
+
+  enum class ApiType {
+    SYNC,
+    ASYNC,
+    RAW,
+    CALL_BACK,  // not CALLBACK because that is reserved in Windows
+    RAW_CALL_BACK,
+  };
+
+  void set_server_tag(void* tag) { server_tag_ = tag; }
+  void* server_tag() const { return server_tag_; }
+  /// if MethodHandler is nullptr, then this is an async method
+  MethodHandler* handler() const { return handler_.get(); }
+  ApiType api_type() const { return api_type_; }
+  void SetHandler(MethodHandler* handler) { handler_.reset(handler); }
+  void SetServerApiType(RpcServiceMethod::ApiType type) {
+    if ((api_type_ == ApiType::SYNC) &&
+        (type == ApiType::ASYNC || type == ApiType::RAW)) {
+      // this marks this method as async
+      handler_.reset();
+    } else if (api_type_ != ApiType::SYNC) {
+      // this is not an error condition, as it allows users to declare a server
+      // like WithRawMethod_foo<AsyncService>. However since it
+      // overwrites behavior, it should be logged.
+      gpr_log(
+          GPR_INFO,
+          "You are marking method %s as '%s', even though it was "
+          "previously marked '%s'. This behavior will overwrite the original "
+          "behavior. If you expected this then ignore this message.",
+          name(), TypeToString(api_type_), TypeToString(type));
+    }
+    api_type_ = type;
+  }
+
+ private:
+  void* server_tag_;
+  ApiType api_type_;
+  std::unique_ptr<MethodHandler> handler_;
+
+  const char* TypeToString(RpcServiceMethod::ApiType type) {
+    switch (type) {
+      case ApiType::SYNC:
+        return "sync";
+      case ApiType::ASYNC:
+        return "async";
+      case ApiType::RAW:
+        return "raw";
+      case ApiType::CALL_BACK:
+        return "callback";
+      case ApiType::RAW_CALL_BACK:
+        return "raw_callback";
+      default:
+        GPR_UNREACHABLE_CODE(return "unknown");
+    }
+  }
+};
+}  // namespace internal
+
+}  // namespace grpc
 
 #endif  // GRPCPP_IMPL_RPC_SERVICE_METHOD_H
diff --git a/contrib/libs/grpc/include/grpcpp/impl/serialization_traits.h b/contrib/libs/grpc/include/grpcpp/impl/serialization_traits.h
index 6da8b4dfcc..83ba0bb2d5 100644
--- a/contrib/libs/grpc/include/grpcpp/impl/serialization_traits.h
+++ b/contrib/libs/grpc/include/grpcpp/impl/serialization_traits.h
@@ -1,24 +1,62 @@
-/*
- *
- * Copyright 2015 gRPC authors.
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
- */
+//
+//
+// Copyright 2015 gRPC authors.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+//
 
 #ifndef GRPCPP_IMPL_SERIALIZATION_TRAITS_H
 #define GRPCPP_IMPL_SERIALIZATION_TRAITS_H
 
-#include <grpcpp/impl/codegen/serialization_traits.h>  // IWYU pragma: export
+namespace grpc {
+
+/// Defines how to serialize and deserialize some type.
+///
+/// Used for hooking different message serialization API's into GRPC.
+/// Each SerializationTraits<Message> implementation must provide the
+/// following functions:
+/// 1.  static Status Serialize(const Message& msg,
+///                             ByteBuffer* buffer,
+///                             bool* own_buffer);
+///     OR
+///     static Status Serialize(const Message& msg,
+///                             grpc_byte_buffer** buffer,
+///                             bool* own_buffer);
+///     The former is preferred; the latter is deprecated
+///
+/// 2.  static Status Deserialize(ByteBuffer* buffer,
+///                               Message* msg);
+///     OR
+///     static Status Deserialize(grpc_byte_buffer* buffer,
+///                               Message* msg);
+///     The former is preferred; the latter is deprecated
+///
+/// Serialize is required to convert message to a ByteBuffer, and
+/// return that byte buffer through *buffer. *own_buffer should
+/// be set to true if the caller owns said byte buffer, or false if
+/// ownership is retained elsewhere.
+///
+/// Deserialize is required to convert buffer into the message stored at
+/// msg. max_receive_message_size is passed in as a bound on the maximum
+/// number of message bytes Deserialize should accept.
+///
+/// Both functions return a Status, allowing them to explain what went
+/// wrong if required.
+template <class Message,
+          class UnusedButHereForPartialTemplateSpecialization = void>
+class SerializationTraits;
+
+}  // namespace grpc
 
 #endif  // GRPCPP_IMPL_SERIALIZATION_TRAITS_H
diff --git a/contrib/libs/grpc/include/grpcpp/impl/server_builder_option.h b/contrib/libs/grpc/include/grpcpp/impl/server_builder_option.h
index c8f047b90e..d5745c6fb0 100644
--- a/contrib/libs/grpc/include/grpcpp/impl/server_builder_option.h
+++ b/contrib/libs/grpc/include/grpcpp/impl/server_builder_option.h
@@ -1,20 +1,20 @@
-/*
- *
- * Copyright 2015 gRPC authors.
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
- */
+//
+//
+// Copyright 2015 gRPC authors.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+//
 
 #ifndef GRPCPP_IMPL_SERVER_BUILDER_OPTION_H
 #define GRPCPP_IMPL_SERVER_BUILDER_OPTION_H
diff --git a/contrib/libs/grpc/include/grpcpp/impl/server_builder_plugin.h b/contrib/libs/grpc/include/grpcpp/impl/server_builder_plugin.h
index 8fedca2b14..ba5581d97e 100644
--- a/contrib/libs/grpc/include/grpcpp/impl/server_builder_plugin.h
+++ b/contrib/libs/grpc/include/grpcpp/impl/server_builder_plugin.h
@@ -1,20 +1,20 @@
-/*
- *
- * Copyright 2016 gRPC authors.
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
- */
+//
+//
+// Copyright 2016 gRPC authors.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+//
 
 #ifndef GRPCPP_IMPL_SERVER_BUILDER_PLUGIN_H
 #define GRPCPP_IMPL_SERVER_BUILDER_PLUGIN_H
diff --git a/contrib/libs/grpc/include/grpcpp/impl/codegen/server_callback_handlers.h b/contrib/libs/grpc/include/grpcpp/impl/server_callback_handlers.h
index eac524f653..f8aa1d374a 100644
--- a/contrib/libs/grpc/include/grpcpp/impl/codegen/server_callback_handlers.h
+++ b/contrib/libs/grpc/include/grpcpp/impl/server_callback_handlers.h
@@ -1,30 +1,30 @@
-/*
- *
- * Copyright 2019 gRPC authors.
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-#ifndef GRPCPP_IMPL_CODEGEN_SERVER_CALLBACK_HANDLERS_H
-#define GRPCPP_IMPL_CODEGEN_SERVER_CALLBACK_HANDLERS_H
-
-// IWYU pragma: private
-
-#include <grpcpp/impl/codegen/message_allocator.h>
-#include <grpcpp/impl/codegen/rpc_service_method.h>
-#include <grpcpp/impl/codegen/server_callback.h>
-#include <grpcpp/impl/codegen/server_context.h>
-#include <grpcpp/impl/codegen/status.h>
+//
+//
+// Copyright 2019 gRPC authors.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+
+#ifndef GRPCPP_IMPL_SERVER_CALLBACK_HANDLERS_H
+#define GRPCPP_IMPL_SERVER_CALLBACK_HANDLERS_H
+
+#include <grpc/grpc.h>
+#include <grpc/support/log.h>
+#include <grpcpp/impl/rpc_service_method.h>
+#include <grpcpp/server_context.h>
+#include <grpcpp/support/message_allocator.h>
+#include <grpcpp/support/server_callback.h>
+#include <grpcpp/support/status.h>
 
 namespace grpc {
 namespace internal {
@@ -45,13 +45,13 @@ class CallbackUnaryHandler : public grpc::internal::MethodHandler {
 
   void RunHandler(const HandlerParameter& param) final {
     // Arena allocate a controller structure (that includes request/response)
-    grpc::g_core_codegen_interface->grpc_call_ref(param.call->call());
+    grpc_call_ref(param.call->call());
     auto* allocator_state =
         static_cast<MessageHolder<RequestType, ResponseType>*>(
             param.internal_data);
 
-    auto* call = new (grpc::g_core_codegen_interface->grpc_call_arena_alloc(
-        param.call->call(), sizeof(ServerCallbackUnaryImpl)))
+    auto* call = new (grpc_call_arena_alloc(param.call->call(),
+                                            sizeof(ServerCallbackUnaryImpl)))
         ServerCallbackUnaryImpl(
             static_cast<grpc::CallbackServerContext*>(param.server_context),
             param.call, allocator_state, param.call_requester);
@@ -68,8 +68,8 @@ class CallbackUnaryHandler : public grpc::internal::MethodHandler {
 
     if (reactor == nullptr) {
       // if deserialization or reactor creator failed, we need to fail the call
-      reactor = new (grpc::g_core_codegen_interface->grpc_call_arena_alloc(
-          param.call->call(), sizeof(UnimplementedUnaryReactor)))
+      reactor = new (grpc_call_arena_alloc(param.call->call(),
+                                           sizeof(UnimplementedUnaryReactor)))
           UnimplementedUnaryReactor(
               grpc::Status(grpc::StatusCode::UNIMPLEMENTED, ""));
     }
@@ -87,10 +87,9 @@ class CallbackUnaryHandler : public grpc::internal::MethodHandler {
     if (allocator_ != nullptr) {
       allocator_state = allocator_->AllocateMessages();
     } else {
-      allocator_state =
-          new (grpc::g_core_codegen_interface->grpc_call_arena_alloc(
-              call, sizeof(DefaultMessageHolder<RequestType, ResponseType>)))
-              DefaultMessageHolder<RequestType, ResponseType>();
+      allocator_state = new (grpc_call_arena_alloc(
+          call, sizeof(DefaultMessageHolder<RequestType, ResponseType>)))
+          DefaultMessageHolder<RequestType, ResponseType>();
     }
     *handler_data = allocator_state;
     request = allocator_state->request();
@@ -147,7 +146,7 @@ class CallbackUnaryHandler : public grpc::internal::MethodHandler {
     }
 
     void SendInitialMetadata() override {
-      GPR_CODEGEN_ASSERT(!ctx_->sent_initial_metadata_);
+      GPR_ASSERT(!ctx_->sent_initial_metadata_);
       this->Ref();
       // The callback for this function should not be marked inline because it
       // is directly invoking a user-controlled reaction
@@ -210,7 +209,7 @@ class CallbackUnaryHandler : public grpc::internal::MethodHandler {
         ctx_->context_allocator()->Release(ctx_);
       }
       this->~ServerCallbackUnaryImpl();  // explicitly call destructor
-      grpc::g_core_codegen_interface->grpc_call_unref(call);
+      grpc_call_unref(call);
       call_requester();
     }
 
@@ -258,10 +257,10 @@ class CallbackClientStreamingHandler : public grpc::internal::MethodHandler {
       : get_reactor_(std::move(get_reactor)) {}
   void RunHandler(const HandlerParameter& param) final {
     // Arena allocate a reader structure (that includes response)
-    grpc::g_core_codegen_interface->grpc_call_ref(param.call->call());
+    grpc_call_ref(param.call->call());
 
-    auto* reader = new (grpc::g_core_codegen_interface->grpc_call_arena_alloc(
-        param.call->call(), sizeof(ServerCallbackReaderImpl)))
+    auto* reader = new (grpc_call_arena_alloc(param.call->call(),
+                                              sizeof(ServerCallbackReaderImpl)))
         ServerCallbackReaderImpl(
             static_cast<grpc::CallbackServerContext*>(param.server_context),
             param.call, param.call_requester);
@@ -284,7 +283,7 @@ class CallbackClientStreamingHandler : public grpc::internal::MethodHandler {
 
     if (reactor == nullptr) {
       // if deserialization or reactor creator failed, we need to fail the call
-      reactor = new (grpc::g_core_codegen_interface->grpc_call_arena_alloc(
+      reactor = new (grpc_call_arena_alloc(
           param.call->call(), sizeof(UnimplementedReadReactor<RequestType>)))
           UnimplementedReadReactor<RequestType>(
               grpc::Status(grpc::StatusCode::UNIMPLEMENTED, ""));
@@ -333,7 +332,7 @@ class CallbackClientStreamingHandler : public grpc::internal::MethodHandler {
     }
 
     void SendInitialMetadata() override {
-      GPR_CODEGEN_ASSERT(!ctx_->sent_initial_metadata_);
+      GPR_ASSERT(!ctx_->sent_initial_metadata_);
       this->Ref();
       // The callback for this function should not be inlined because it invokes
       // a user-controlled reaction, but any resulting OnDone can be inlined in
@@ -407,7 +406,7 @@ class CallbackClientStreamingHandler : public grpc::internal::MethodHandler {
         ctx_->context_allocator()->Release(ctx_);
       }
       this->~ServerCallbackReaderImpl();  // explicitly call destructor
-      grpc::g_core_codegen_interface->grpc_call_unref(call);
+      grpc_call_unref(call);
       call_requester();
     }
 
@@ -449,10 +448,10 @@ class CallbackServerStreamingHandler : public grpc::internal::MethodHandler {
       : get_reactor_(std::move(get_reactor)) {}
   void RunHandler(const HandlerParameter& param) final {
     // Arena allocate a writer structure
-    grpc::g_core_codegen_interface->grpc_call_ref(param.call->call());
+    grpc_call_ref(param.call->call());
 
-    auto* writer = new (grpc::g_core_codegen_interface->grpc_call_arena_alloc(
-        param.call->call(), sizeof(ServerCallbackWriterImpl)))
+    auto* writer = new (grpc_call_arena_alloc(param.call->call(),
+                                              sizeof(ServerCallbackWriterImpl)))
         ServerCallbackWriterImpl(
             static_cast<grpc::CallbackServerContext*>(param.server_context),
             param.call, static_cast<RequestType*>(param.request),
@@ -475,7 +474,7 @@ class CallbackServerStreamingHandler : public grpc::internal::MethodHandler {
     }
     if (reactor == nullptr) {
       // if deserialization or reactor creator failed, we need to fail the call
-      reactor = new (grpc::g_core_codegen_interface->grpc_call_arena_alloc(
+      reactor = new (grpc_call_arena_alloc(
           param.call->call(), sizeof(UnimplementedWriteReactor<ResponseType>)))
           UnimplementedWriteReactor<ResponseType>(
               grpc::Status(grpc::StatusCode::UNIMPLEMENTED, ""));
@@ -488,8 +487,8 @@ class CallbackServerStreamingHandler : public grpc::internal::MethodHandler {
                     grpc::Status* status, void** /*handler_data*/) final {
     grpc::ByteBuffer buf;
     buf.set_buffer(req);
-    auto* request = new (grpc::g_core_codegen_interface->grpc_call_arena_alloc(
-        call, sizeof(RequestType))) RequestType();
+    auto* request =
+        new (grpc_call_arena_alloc(call, sizeof(RequestType))) RequestType();
     *status =
         grpc::SerializationTraits<RequestType>::Deserialize(&buf, request);
     buf.Release();
@@ -535,7 +534,7 @@ class CallbackServerStreamingHandler : public grpc::internal::MethodHandler {
     }
 
     void SendInitialMetadata() override {
-      GPR_CODEGEN_ASSERT(!ctx_->sent_initial_metadata_);
+      GPR_ASSERT(!ctx_->sent_initial_metadata_);
       this->Ref();
       // The callback for this function should not be inlined because it invokes
       // a user-controlled reaction, but any resulting OnDone can be inlined in
@@ -573,7 +572,7 @@ class CallbackServerStreamingHandler : public grpc::internal::MethodHandler {
         ctx_->sent_initial_metadata_ = true;
       }
       // TODO(vjpai): don't assert
-      GPR_CODEGEN_ASSERT(write_ops_.SendMessagePtr(resp, options).ok());
+      GPR_ASSERT(write_ops_.SendMessagePtr(resp, options).ok());
       call_.PerformOps(&write_ops_);
     }
 
@@ -581,7 +580,7 @@ class CallbackServerStreamingHandler : public grpc::internal::MethodHandler {
                         grpc::Status s) override {
       // This combines the write into the finish callback
       // TODO(vjpai): don't assert
-      GPR_CODEGEN_ASSERT(finish_ops_.SendMessagePtr(resp, options).ok());
+      GPR_ASSERT(finish_ops_.SendMessagePtr(resp, options).ok());
       Finish(std::move(s));
     }
 
@@ -632,7 +631,7 @@ class CallbackServerStreamingHandler : public grpc::internal::MethodHandler {
         ctx_->context_allocator()->Release(ctx_);
       }
       this->~ServerCallbackWriterImpl();  // explicitly call destructor
-      grpc::g_core_codegen_interface->grpc_call_unref(call);
+      grpc_call_unref(call);
       call_requester();
     }
 
@@ -674,9 +673,9 @@ class CallbackBidiHandler : public grpc::internal::MethodHandler {
           get_reactor)
       : get_reactor_(std::move(get_reactor)) {}
   void RunHandler(const HandlerParameter& param) final {
-    grpc::g_core_codegen_interface->grpc_call_ref(param.call->call());
+    grpc_call_ref(param.call->call());
 
-    auto* stream = new (grpc::g_core_codegen_interface->grpc_call_arena_alloc(
+    auto* stream = new (grpc_call_arena_alloc(
         param.call->call(), sizeof(ServerCallbackReaderWriterImpl)))
         ServerCallbackReaderWriterImpl(
             static_cast<grpc::CallbackServerContext*>(param.server_context),
@@ -699,7 +698,7 @@ class CallbackBidiHandler : public grpc::internal::MethodHandler {
 
     if (reactor == nullptr) {
       // if deserialization or reactor creator failed, we need to fail the call
-      reactor = new (grpc::g_core_codegen_interface->grpc_call_arena_alloc(
+      reactor = new (grpc_call_arena_alloc(
           param.call->call(),
           sizeof(UnimplementedBidiReactor<RequestType, ResponseType>)))
           UnimplementedBidiReactor<RequestType, ResponseType>(
@@ -745,7 +744,7 @@ class CallbackBidiHandler : public grpc::internal::MethodHandler {
     }
 
     void SendInitialMetadata() override {
-      GPR_CODEGEN_ASSERT(!ctx_->sent_initial_metadata_);
+      GPR_ASSERT(!ctx_->sent_initial_metadata_);
       this->Ref();
       // The callback for this function should not be inlined because it invokes
       // a user-controlled reaction, but any resulting OnDone can be inlined in
@@ -783,14 +782,14 @@ class CallbackBidiHandler : public grpc::internal::MethodHandler {
         ctx_->sent_initial_metadata_ = true;
       }
       // TODO(vjpai): don't assert
-      GPR_CODEGEN_ASSERT(write_ops_.SendMessagePtr(resp, options).ok());
+      GPR_ASSERT(write_ops_.SendMessagePtr(resp, options).ok());
       call_.PerformOps(&write_ops_);
     }
 
     void WriteAndFinish(const ResponseType* resp, grpc::WriteOptions options,
                         grpc::Status s) override {
       // TODO(vjpai): don't assert
-      GPR_CODEGEN_ASSERT(finish_ops_.SendMessagePtr(resp, options).ok());
+      GPR_ASSERT(finish_ops_.SendMessagePtr(resp, options).ok());
       Finish(std::move(s));
     }
 
@@ -848,7 +847,7 @@ class CallbackBidiHandler : public grpc::internal::MethodHandler {
         ctx_->context_allocator()->Release(ctx_);
       }
       this->~ServerCallbackReaderWriterImpl();  // explicitly call destructor
-      grpc::g_core_codegen_interface->grpc_call_unref(call);
+      grpc_call_unref(call);
       call_requester();
     }
 
@@ -886,4 +885,4 @@ class CallbackBidiHandler : public grpc::internal::MethodHandler {
 }  // namespace internal
 }  // namespace grpc
 
-#endif  // GRPCPP_IMPL_CODEGEN_SERVER_CALLBACK_HANDLERS_H
+#endif  // GRPCPP_IMPL_SERVER_CALLBACK_HANDLERS_H
diff --git a/contrib/libs/grpc/include/grpcpp/impl/server_initializer.h b/contrib/libs/grpc/include/grpcpp/impl/server_initializer.h
index 17928e9a4a..f4981c80f9 100644
--- a/contrib/libs/grpc/include/grpcpp/impl/server_initializer.h
+++ b/contrib/libs/grpc/include/grpcpp/impl/server_initializer.h
@@ -1,20 +1,20 @@
-/*
- *
- * Copyright 2016 gRPC authors.
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
- */
+//
+//
+// Copyright 2016 gRPC authors.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+//
 
 #ifndef GRPCPP_IMPL_SERVER_INITIALIZER_H
 #define GRPCPP_IMPL_SERVER_INITIALIZER_H
diff --git a/contrib/libs/grpc/include/grpcpp/impl/service_type.h b/contrib/libs/grpc/include/grpcpp/impl/service_type.h
index de45c4266a..9699e2328d 100644
--- a/contrib/libs/grpc/include/grpcpp/impl/service_type.h
+++ b/contrib/libs/grpc/include/grpcpp/impl/service_type.h
@@ -1,24 +1,235 @@
-/*
- *
- * Copyright 2015 gRPC authors.
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
- */
+//
+//
+// Copyright 2015 gRPC authors.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+//
 
 #ifndef GRPCPP_IMPL_SERVICE_TYPE_H
 #define GRPCPP_IMPL_SERVICE_TYPE_H
 
-#include <grpcpp/impl/codegen/service_type.h>  // IWYU pragma: export
+#include <grpc/support/log.h>
+#include <grpcpp/impl/rpc_service_method.h>
+#include <grpcpp/impl/serialization_traits.h>
+#include <grpcpp/server_interface.h>
+#include <grpcpp/support/config.h>
+#include <grpcpp/support/status.h>
+
+namespace grpc {
+
+class CompletionQueue;
+class ServerContext;
+class ServerInterface;
+
+namespace internal {
+class Call;
+class ServerAsyncStreamingInterface {
+ public:
+  virtual ~ServerAsyncStreamingInterface() {}
+
+  /// Request notification of the sending of initial metadata to the client.
+  /// Completion will be notified by \a tag on the associated completion
+  /// queue. This call is optional, but if it is used, it cannot be used
+  /// concurrently with or after the \a Finish method.
+  ///
+  /// \param[in] tag Tag identifying this request.
+  virtual void SendInitialMetadata(void* tag) = 0;
+
+ private:
+  friend class grpc::ServerInterface;
+  virtual void BindCall(Call* call) = 0;
+};
+}  // namespace internal
+
+/// Descriptor of an RPC service and its various RPC methods
+class Service {
+ public:
+  Service() : server_(nullptr) {}
+  virtual ~Service() {}
+
+  bool has_async_methods() const {
+    for (const auto& method : methods_) {
+      if (method && method->handler() == nullptr) {
+        return true;
+      }
+    }
+    return false;
+  }
+
+  bool has_synchronous_methods() const {
+    for (const auto& method : methods_) {
+      if (method &&
+          method->api_type() == internal::RpcServiceMethod::ApiType::SYNC) {
+        return true;
+      }
+    }
+    return false;
+  }
+
+  bool has_callback_methods() const {
+    for (const auto& method : methods_) {
+      if (method && (method->api_type() ==
+                         internal::RpcServiceMethod::ApiType::CALL_BACK ||
+                     method->api_type() ==
+                         internal::RpcServiceMethod::ApiType::RAW_CALL_BACK)) {
+        return true;
+      }
+    }
+    return false;
+  }
+
+  bool has_generic_methods() const {
+    for (const auto& method : methods_) {
+      if (method == nullptr) {
+        return true;
+      }
+    }
+    return false;
+  }
+
+ protected:
+  template <class Message>
+  void RequestAsyncUnary(int index, grpc::ServerContext* context,
+                         Message* request,
+                         internal::ServerAsyncStreamingInterface* stream,
+                         grpc::CompletionQueue* call_cq,
+                         grpc::ServerCompletionQueue* notification_cq,
+                         void* tag) {
+    // Typecast the index to size_t for indexing into a vector
+    // while preserving the API that existed before a compiler
+    // warning was first seen (grpc/grpc#11664)
+    size_t idx = static_cast<size_t>(index);
+    server_->RequestAsyncCall(methods_[idx].get(), context, stream, call_cq,
+                              notification_cq, tag, request);
+  }
+  void RequestAsyncClientStreaming(
+      int index, grpc::ServerContext* context,
+      internal::ServerAsyncStreamingInterface* stream,
+      grpc::CompletionQueue* call_cq,
+      grpc::ServerCompletionQueue* notification_cq, void* tag) {
+    size_t idx = static_cast<size_t>(index);
+    server_->RequestAsyncCall(methods_[idx].get(), context, stream, call_cq,
+                              notification_cq, tag);
+  }
+  template <class Message>
+  void RequestAsyncServerStreaming(
+      int index, grpc::ServerContext* context, Message* request,
+      internal::ServerAsyncStreamingInterface* stream,
+      grpc::CompletionQueue* call_cq,
+      grpc::ServerCompletionQueue* notification_cq, void* tag) {
+    size_t idx = static_cast<size_t>(index);
+    server_->RequestAsyncCall(methods_[idx].get(), context, stream, call_cq,
+                              notification_cq, tag, request);
+  }
+  void RequestAsyncBidiStreaming(
+      int index, grpc::ServerContext* context,
+      internal::ServerAsyncStreamingInterface* stream,
+      grpc::CompletionQueue* call_cq,
+      grpc::ServerCompletionQueue* notification_cq, void* tag) {
+    size_t idx = static_cast<size_t>(index);
+    server_->RequestAsyncCall(methods_[idx].get(), context, stream, call_cq,
+                              notification_cq, tag);
+  }
+
+  void AddMethod(internal::RpcServiceMethod* method) {
+    methods_.emplace_back(method);
+  }
+
+  void MarkMethodAsync(int index) {
+    // This does not have to be a hard error, however no one has approached us
+    // with a use case yet. Please file an issue if you believe you have one.
+    size_t idx = static_cast<size_t>(index);
+    GPR_ASSERT(methods_[idx].get() != nullptr &&
+               "Cannot mark the method as 'async' because it has already been "
+               "marked as 'generic'.");
+    methods_[idx]->SetServerApiType(internal::RpcServiceMethod::ApiType::ASYNC);
+  }
+
+  void MarkMethodRaw(int index) {
+    // This does not have to be a hard error, however no one has approached us
+    // with a use case yet. Please file an issue if you believe you have one.
+    size_t idx = static_cast<size_t>(index);
+    GPR_ASSERT(methods_[idx].get() != nullptr &&
+               "Cannot mark the method as 'raw' because it has already "
+               "been marked as 'generic'.");
+    methods_[idx]->SetServerApiType(internal::RpcServiceMethod::ApiType::RAW);
+  }
+
+  void MarkMethodGeneric(int index) {
+    // This does not have to be a hard error, however no one has approached us
+    // with a use case yet. Please file an issue if you believe you have one.
+    size_t idx = static_cast<size_t>(index);
+    GPR_ASSERT(
+        methods_[idx]->handler() != nullptr &&
+        "Cannot mark the method as 'generic' because it has already been "
+        "marked as 'async' or 'raw'.");
+    methods_[idx].reset();
+  }
+
+  void MarkMethodStreamed(int index, internal::MethodHandler* streamed_method) {
+    // This does not have to be a hard error, however no one has approached us
+    // with a use case yet. Please file an issue if you believe you have one.
+    size_t idx = static_cast<size_t>(index);
+    GPR_ASSERT(methods_[idx] && methods_[idx]->handler() &&
+               "Cannot mark an async or generic method Streamed");
+    methods_[idx]->SetHandler(streamed_method);
+
+    // From the server's point of view, streamed unary is a special
+    // case of BIDI_STREAMING that has 1 read and 1 write, in that order,
+    // and split server-side streaming is BIDI_STREAMING with 1 read and
+    // any number of writes, in that order.
+    methods_[idx]->SetMethodType(internal::RpcMethod::BIDI_STREAMING);
+  }
+
+  void MarkMethodCallback(int index, internal::MethodHandler* handler) {
+    // This does not have to be a hard error, however no one has approached us
+    // with a use case yet. Please file an issue if you believe you have one.
+    size_t idx = static_cast<size_t>(index);
+    GPR_ASSERT(
+        methods_[idx].get() != nullptr &&
+        "Cannot mark the method as 'callback' because it has already been "
+        "marked as 'generic'.");
+    methods_[idx]->SetHandler(handler);
+    methods_[idx]->SetServerApiType(
+        internal::RpcServiceMethod::ApiType::CALL_BACK);
+  }
+
+  void MarkMethodRawCallback(int index, internal::MethodHandler* handler) {
+    // This does not have to be a hard error, however no one has approached us
+    // with a use case yet. Please file an issue if you believe you have one.
+    size_t idx = static_cast<size_t>(index);
+    GPR_ASSERT(
+        methods_[idx].get() != nullptr &&
+        "Cannot mark the method as 'raw callback' because it has already "
+        "been marked as 'generic'.");
+    methods_[idx]->SetHandler(handler);
+    methods_[idx]->SetServerApiType(
+        internal::RpcServiceMethod::ApiType::RAW_CALL_BACK);
+  }
+
+  internal::MethodHandler* GetHandler(int index) {
+    size_t idx = static_cast<size_t>(index);
+    return methods_[idx]->handler();
+  }
+
+ private:
+  friend class Server;
+  friend class ServerInterface;
+  ServerInterface* server_;
+  std::vector<std::unique_ptr<internal::RpcServiceMethod>> methods_;
+};
+
+}  // namespace grpc
 
 #endif  // GRPCPP_IMPL_SERVICE_TYPE_H
diff --git a/contrib/libs/grpc/include/grpcpp/impl/status.h b/contrib/libs/grpc/include/grpcpp/impl/status.h
new file mode 100644
index 0000000000..adb9b2e683
--- /dev/null
+++ b/contrib/libs/grpc/include/grpcpp/impl/status.h
@@ -0,0 +1,141 @@
+//
+//
+// Copyright 2015 gRPC authors.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+//
+
+#ifndef GRPCPP_IMPL_STATUS_H
+#define GRPCPP_IMPL_STATUS_H
+
+// IWYU pragma: private, include <grpcpp/support/status.h>
+
+#include <grpc/support/port_platform.h>
+
+#include <grpc/status.h>
+#include <grpcpp/support/config.h>
+#include <grpcpp/support/status_code_enum.h>
+
+namespace grpc {
+
+/// Did it work? If it didn't, why?
+///
+/// See \a grpc::StatusCode for details on the available code and their meaning.
+class GRPC_MUST_USE_RESULT_WHEN_USE_STRICT_WARNING Status {
+ public:
+  /// Construct an OK instance.
+  Status() : code_(StatusCode::OK) {
+    // Static assertions to make sure that the C++ API value correctly
+    // maps to the core surface API value
+    static_assert(StatusCode::OK == static_cast<StatusCode>(GRPC_STATUS_OK),
+                  "Mismatched status code");
+    static_assert(
+        StatusCode::CANCELLED == static_cast<StatusCode>(GRPC_STATUS_CANCELLED),
+        "Mismatched status code");
+    static_assert(
+        StatusCode::UNKNOWN == static_cast<StatusCode>(GRPC_STATUS_UNKNOWN),
+        "Mismatched status code");
+    static_assert(StatusCode::INVALID_ARGUMENT ==
+                      static_cast<StatusCode>(GRPC_STATUS_INVALID_ARGUMENT),
+                  "Mismatched status code");
+    static_assert(StatusCode::DEADLINE_EXCEEDED ==
+                      static_cast<StatusCode>(GRPC_STATUS_DEADLINE_EXCEEDED),
+                  "Mismatched status code");
+    static_assert(
+        StatusCode::NOT_FOUND == static_cast<StatusCode>(GRPC_STATUS_NOT_FOUND),
+        "Mismatched status code");
+    static_assert(StatusCode::ALREADY_EXISTS ==
+                      static_cast<StatusCode>(GRPC_STATUS_ALREADY_EXISTS),
+                  "Mismatched status code");
+    static_assert(StatusCode::PERMISSION_DENIED ==
+                      static_cast<StatusCode>(GRPC_STATUS_PERMISSION_DENIED),
+                  "Mismatched status code");
+    static_assert(StatusCode::UNAUTHENTICATED ==
+                      static_cast<StatusCode>(GRPC_STATUS_UNAUTHENTICATED),
+                  "Mismatched status code");
+    static_assert(StatusCode::RESOURCE_EXHAUSTED ==
+                      static_cast<StatusCode>(GRPC_STATUS_RESOURCE_EXHAUSTED),
+                  "Mismatched status code");
+    static_assert(StatusCode::FAILED_PRECONDITION ==
+                      static_cast<StatusCode>(GRPC_STATUS_FAILED_PRECONDITION),
+                  "Mismatched status code");
+    static_assert(
+        StatusCode::ABORTED == static_cast<StatusCode>(GRPC_STATUS_ABORTED),
+        "Mismatched status code");
+    static_assert(StatusCode::OUT_OF_RANGE ==
+                      static_cast<StatusCode>(GRPC_STATUS_OUT_OF_RANGE),
+                  "Mismatched status code");
+    static_assert(StatusCode::UNIMPLEMENTED ==
+                      static_cast<StatusCode>(GRPC_STATUS_UNIMPLEMENTED),
+                  "Mismatched status code");
+    static_assert(
+        StatusCode::INTERNAL == static_cast<StatusCode>(GRPC_STATUS_INTERNAL),
+        "Mismatched status code");
+    static_assert(StatusCode::UNAVAILABLE ==
+                      static_cast<StatusCode>(GRPC_STATUS_UNAVAILABLE),
+                  "Mismatched status code");
+    static_assert(
+        StatusCode::DATA_LOSS == static_cast<StatusCode>(GRPC_STATUS_DATA_LOSS),
+        "Mismatched status code");
+  }
+
+  /// Construct an instance with associated \a code and \a error_message.
+  /// It is an error to construct an OK status with non-empty \a error_message.
+  /// Note that \a message is intentionally accepted as a const reference
+  /// instead of a value (which results in a copy instead of a move) to allow
+  /// for easy transition to y_absl::Status in the future which accepts an
+  /// y_absl::string_view as a parameter.
+  Status(StatusCode code, const TString& error_message)
+      : code_(code), error_message_(error_message) {}
+
+  /// Construct an instance with \a code,  \a error_message and
+  /// \a error_details. It is an error to construct an OK status with non-empty
+  /// \a error_message and/or \a error_details.
+  Status(StatusCode code, const TString& error_message,
+         const TString& error_details)
+      : code_(code),
+        error_message_(error_message),
+        binary_error_details_(error_details) {}
+
+  // Pre-defined special status objects.
+  /// An OK pre-defined instance.
+  static const Status& OK;
+  /// A CANCELLED pre-defined instance.
+  static const Status& CANCELLED;
+
+  /// Return the instance's error code.
+  StatusCode error_code() const { return code_; }
+  /// Return the instance's error message.
+  TString error_message() const { return error_message_; }
+  /// Return the (binary) error details.
+  // Usually it contains a serialized google.rpc.Status proto.
+  TString error_details() const { return binary_error_details_; }
+
+  /// Is the status OK?
+  bool ok() const { return code_ == StatusCode::OK; }
+
+  // Ignores any errors. This method does nothing except potentially suppress
+  // complaints from any tools that are checking that errors are not dropped on
+  // the floor.
+  void IgnoreError() const {}
+
+ private:
+  StatusCode code_;
+  TString error_message_;
+  TString binary_error_details_;
+};
+
+}  // namespace grpc
+
+#endif  // GRPCPP_IMPL_STATUS_H
diff --git a/contrib/libs/grpc/include/grpcpp/impl/sync.h b/contrib/libs/grpc/include/grpcpp/impl/sync.h
new file mode 100644
index 0000000000..1096a4bb06
--- /dev/null
+++ b/contrib/libs/grpc/include/grpcpp/impl/sync.h
@@ -0,0 +1,150 @@
+//
+//
+// Copyright 2019 gRPC authors.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+//
+
+#ifndef GRPCPP_IMPL_SYNC_H
+#define GRPCPP_IMPL_SYNC_H
+
+#include <grpc/support/port_platform.h>
+
+#ifdef GPR_HAS_PTHREAD_H
+#include <pthread.h>
+#endif
+
+#include <mutex>
+
+#include "y_absl/synchronization/mutex.h"
+
+#include <grpc/support/log.h>
+#include <grpc/support/sync.h>
+#include <grpc/support/time.h>
+
+// The core library is not accessible in C++ codegen headers, and vice versa.
+// Thus, we need to have duplicate headers with similar functionality.
+// Make sure any change to this file is also reflected in
+// src/core/lib/gprpp/sync.h too.
+//
+// Whenever possible, prefer "src/core/lib/gprpp/sync.h" over this file,
+// since in core we do not rely on g_core_codegen_interface and hence do not
+// pay the costs of virtual function calls.
+
+namespace grpc {
+namespace internal {
+
+#ifdef GPR_ABSEIL_SYNC
+
+using Mutex = y_absl::Mutex;
+using MutexLock = y_absl::MutexLock;
+using ReleasableMutexLock = y_absl::ReleasableMutexLock;
+using CondVar = y_absl::CondVar;
+
+#else
+
+class Y_ABSL_LOCKABLE Mutex {
+ public:
+  Mutex() { gpr_mu_init(&mu_); }
+  ~Mutex() { gpr_mu_destroy(&mu_); }
+
+  Mutex(const Mutex&) = delete;
+  Mutex& operator=(const Mutex&) = delete;
+
+  void Lock() Y_ABSL_EXCLUSIVE_LOCK_FUNCTION() { gpr_mu_lock(&mu_); }
+  void Unlock() Y_ABSL_UNLOCK_FUNCTION() { gpr_mu_unlock(&mu_); }
+
+ private:
+  union {
+    gpr_mu mu_;
+    std::mutex do_not_use_sth_;
+#ifdef GPR_HAS_PTHREAD_H
+    pthread_mutex_t do_not_use_pth_;
+#endif
+  };
+
+  friend class CondVar;
+};
+
+class Y_ABSL_SCOPED_LOCKABLE MutexLock {
+ public:
+  explicit MutexLock(Mutex* mu) Y_ABSL_EXCLUSIVE_LOCK_FUNCTION(mu) : mu_(mu) {
+    mu_->Lock();
+  }
+  ~MutexLock() Y_ABSL_UNLOCK_FUNCTION() { mu_->Unlock(); }
+
+  MutexLock(const MutexLock&) = delete;
+  MutexLock& operator=(const MutexLock&) = delete;
+
+ private:
+  Mutex* const mu_;
+};
+
+class Y_ABSL_SCOPED_LOCKABLE ReleasableMutexLock {
+ public:
+  explicit ReleasableMutexLock(Mutex* mu) Y_ABSL_EXCLUSIVE_LOCK_FUNCTION(mu)
+      : mu_(mu) {
+    mu_->Lock();
+  }
+  ~ReleasableMutexLock() Y_ABSL_UNLOCK_FUNCTION() {
+    if (!released_) mu_->Unlock();
+  }
+
+  ReleasableMutexLock(const ReleasableMutexLock&) = delete;
+  ReleasableMutexLock& operator=(const ReleasableMutexLock&) = delete;
+
+  void Release() Y_ABSL_UNLOCK_FUNCTION() {
+    GPR_DEBUG_ASSERT(!released_);
+    released_ = true;
+    mu_->Unlock();
+  }
+
+ private:
+  Mutex* const mu_;
+  bool released_ = false;
+};
+
+class CondVar {
+ public:
+  CondVar() { gpr_cv_init(&cv_); }
+  ~CondVar() { gpr_cv_destroy(&cv_); }
+
+  CondVar(const CondVar&) = delete;
+  CondVar& operator=(const CondVar&) = delete;
+
+  void Signal() { gpr_cv_signal(&cv_); }
+  void SignalAll() { gpr_cv_broadcast(&cv_); }
+
+  void Wait(Mutex* mu) {
+    gpr_cv_wait(&cv_, &mu->mu_, gpr_inf_future(GPR_CLOCK_REALTIME));
+  }
+
+ private:
+  gpr_cv cv_;
+};
+
+#endif  // GPR_ABSEIL_SYNC
+
+template <typename Predicate>
+GRPC_DEPRECATED("incompatible with thread safety analysis")
+static void WaitUntil(CondVar* cv, Mutex* mu, Predicate pred) {
+  while (!pred()) {
+    cv->Wait(mu);
+  }
+}
+
+}  // namespace internal
+}  // namespace grpc
+
+#endif  // GRPCPP_IMPL_SYNC_H
diff --git a/contrib/libs/grpc/include/grpcpp/resource_quota.h b/contrib/libs/grpc/include/grpcpp/resource_quota.h
index 1a8ac2c58b..c482f46b84 100644
--- a/contrib/libs/grpc/include/grpcpp/resource_quota.h
+++ b/contrib/libs/grpc/include/grpcpp/resource_quota.h
@@ -1,28 +1,28 @@
-/*
- *
- * Copyright 2016 gRPC authors.
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
- */
+//
+//
+// Copyright 2016 gRPC authors.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+//
 
 #ifndef GRPCPP_RESOURCE_QUOTA_H
 #define GRPCPP_RESOURCE_QUOTA_H
 
 struct grpc_resource_quota;
 
-#include <grpcpp/impl/codegen/config.h>
-#include <grpcpp/impl/codegen/grpc_library.h>
+#include <grpcpp/impl/grpc_library.h>
+#include <grpcpp/support/config.h>
 
 namespace grpc {
 
@@ -31,7 +31,7 @@ namespace grpc {
 /// or a client channel (via \a ChannelArguments).
 /// gRPC will attempt to keep memory and threads used by all attached entities
 /// below the ResourceQuota bound.
-class ResourceQuota final : private grpc::GrpcLibraryCodegen {
+class ResourceQuota final : private grpc::internal::GrpcLibrary {
  public:
   /// \param name - a unique name for this ResourceQuota.
   explicit ResourceQuota(const TString& name);
diff --git a/contrib/libs/grpc/include/grpcpp/security/auth_context.h b/contrib/libs/grpc/include/grpcpp/security/auth_context.h
index 17784508e2..19be46f878 100644
--- a/contrib/libs/grpc/include/grpcpp/security/auth_context.h
+++ b/contrib/libs/grpc/include/grpcpp/security/auth_context.h
@@ -1,24 +1,99 @@
-/*
- *
- * Copyright 2015 gRPC authors.
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
- */
+//
+//
+// Copyright 2015 gRPC authors.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+//
 
 #ifndef GRPCPP_SECURITY_AUTH_CONTEXT_H
 #define GRPCPP_SECURITY_AUTH_CONTEXT_H
 
-#include <grpcpp/impl/codegen/security/auth_context.h>  // IWYU pragma: export
+#include <iterator>
+#include <vector>
+
+#include <grpcpp/support/config.h>
+#include <grpcpp/support/string_ref.h>
+
+struct grpc_auth_context;
+struct grpc_auth_property;
+struct grpc_auth_property_iterator;
+
+namespace grpc {
+class SecureAuthContext;
+
+typedef std::pair<string_ref, string_ref> AuthProperty;
+
+class AuthPropertyIterator {
+ public:
+  using iterator_category = std::forward_iterator_tag;
+  using value_type = const AuthProperty;
+  using pointer = void;
+  using reference = void;
+  using difference_type = std::ptrdiff_t;
+
+  ~AuthPropertyIterator();
+  AuthPropertyIterator& operator++();
+  AuthPropertyIterator operator++(int);
+  bool operator==(const AuthPropertyIterator& rhs) const;
+  bool operator!=(const AuthPropertyIterator& rhs) const;
+  AuthProperty operator*();
+
+ protected:
+  AuthPropertyIterator();
+  AuthPropertyIterator(const grpc_auth_property* property,
+                       const grpc_auth_property_iterator* iter);
+
+ private:
+  friend class SecureAuthContext;
+  const grpc_auth_property* property_;
+  // The following items form a grpc_auth_property_iterator.
+  const grpc_auth_context* ctx_;
+  size_t index_;
+  const char* name_;
+};
+
+/// Class encapsulating the Authentication Information.
+///
+/// It includes the secure identity of the peer, the type of secure transport
+/// used as well as any other properties required by the authorization layer.
+class AuthContext {
+ public:
+  virtual ~AuthContext() {}
+
+  /// Returns true if the peer is authenticated.
+  virtual bool IsPeerAuthenticated() const = 0;
+
+  /// A peer identity.
+  ///
+  /// It is, in general, comprised of one or more properties (in which case they
+  /// have the same name).
+  virtual std::vector<grpc::string_ref> GetPeerIdentity() const = 0;
+  virtual TString GetPeerIdentityPropertyName() const = 0;
+
+  /// Returns all the property values with the given name.
+  virtual std::vector<grpc::string_ref> FindPropertyValues(
+      const TString& name) const = 0;
+
+  /// Iteration over all the properties.
+  virtual AuthPropertyIterator begin() const = 0;
+  virtual AuthPropertyIterator end() const = 0;
+
+  /// Mutation functions: should only be used by an AuthMetadataProcessor.
+  virtual void AddProperty(const TString& key, const string_ref& value) = 0;
+  virtual bool SetPeerIdentityPropertyName(const TString& name) = 0;
+};
+
+}  // namespace grpc
 
 #endif  // GRPCPP_SECURITY_AUTH_CONTEXT_H
diff --git a/contrib/libs/grpc/include/grpcpp/security/auth_metadata_processor.h b/contrib/libs/grpc/include/grpcpp/security/auth_metadata_processor.h
index 3251c8a9b8..4705053b04 100644
--- a/contrib/libs/grpc/include/grpcpp/security/auth_metadata_processor.h
+++ b/contrib/libs/grpc/include/grpcpp/security/auth_metadata_processor.h
@@ -1,20 +1,20 @@
-/*
- *
- * Copyright 2015 gRPC authors.
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
- */
+//
+//
+// Copyright 2015 gRPC authors.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+//
 
 #ifndef GRPCPP_SECURITY_AUTH_METADATA_PROCESSOR_H
 #define GRPCPP_SECURITY_AUTH_METADATA_PROCESSOR_H
diff --git a/contrib/libs/grpc/include/grpcpp/security/authorization_policy_provider.h b/contrib/libs/grpc/include/grpcpp/security/authorization_policy_provider.h
index 6a1193c593..26b464f1a5 100644
--- a/contrib/libs/grpc/include/grpcpp/security/authorization_policy_provider.h
+++ b/contrib/libs/grpc/include/grpcpp/security/authorization_policy_provider.h
@@ -19,7 +19,7 @@
 
 #include <grpc/grpc_security.h>
 #include <grpc/status.h>
-#include <grpcpp/impl/codegen/grpc_library.h>
+#include <grpcpp/impl/codegen/status.h>
 
 namespace grpc {
 namespace experimental {
diff --git a/contrib/libs/grpc/include/grpcpp/security/credentials.h b/contrib/libs/grpc/include/grpcpp/security/credentials.h
index ec194aecc3..5a71057e6a 100644
--- a/contrib/libs/grpc/include/grpcpp/security/credentials.h
+++ b/contrib/libs/grpc/include/grpcpp/security/credentials.h
@@ -1,20 +1,20 @@
-/*
- *
- * Copyright 2015 gRPC authors.
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
- */
+//
+//
+// Copyright 2015 gRPC authors.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+//
 
 #ifndef GRPCPP_SECURITY_CREDENTIALS_H
 #define GRPCPP_SECURITY_CREDENTIALS_H
@@ -29,7 +29,7 @@
 
 #include <grpc/grpc_security_constants.h>
 #include <grpcpp/channel.h>
-#include <grpcpp/impl/codegen/grpc_library.h>
+#include <grpcpp/impl/grpc_library.h>
 #include <grpcpp/security/auth_context.h>
 #include <grpcpp/security/tls_credentials_options.h>
 #include <grpcpp/support/channel_arguments.h>
@@ -58,12 +58,6 @@ std::shared_ptr<grpc::Channel> CreateCustomChannelWithInterceptors(
     std::vector<
         std::unique_ptr<grpc::experimental::ClientInterceptorFactoryInterface>>
         interceptor_creators);
-
-GRPC_DEPRECATED(
-    "Use grpc::XdsCredentials instead. The experimental version will be "
-    "deleted after the 1.41 release.")
-std::shared_ptr<ChannelCredentials> XdsCredentials(
-    const std::shared_ptr<ChannelCredentials>& fallback_creds);
 }  // namespace experimental
 
 /// Builds XDS Credentials.
@@ -76,11 +70,8 @@ std::shared_ptr<ChannelCredentials> XdsCredentials(
 /// for all the calls on that channel.
 ///
 /// \see https://grpc.io/docs/guides/auth.html
-class ChannelCredentials : private grpc::GrpcLibraryCodegen {
+class ChannelCredentials : private grpc::internal::GrpcLibrary {
  public:
-  ChannelCredentials();
-  ~ChannelCredentials() override;
-
  protected:
   friend std::shared_ptr<ChannelCredentials> CompositeChannelCredentials(
       const std::shared_ptr<ChannelCredentials>& channel_creds,
@@ -133,11 +124,8 @@ class ChannelCredentials : private grpc::GrpcLibraryCodegen {
 /// authenticate with a server for a given call on a channel.
 ///
 /// \see https://grpc.io/docs/guides/auth.html
-class CallCredentials : private grpc::GrpcLibraryCodegen {
+class CallCredentials : private grpc::internal::GrpcLibrary {
  public:
-  CallCredentials();
-  ~CallCredentials() override;
-
   /// Apply this instance's credentials to \a call.
   virtual bool ApplyToCall(grpc_call* call) = 0;
   virtual grpc::string DebugString() {
diff --git a/contrib/libs/grpc/include/grpcpp/security/server_credentials.h b/contrib/libs/grpc/include/grpcpp/security/server_credentials.h
index d402cd62a7..9731cc6a83 100644
--- a/contrib/libs/grpc/include/grpcpp/security/server_credentials.h
+++ b/contrib/libs/grpc/include/grpcpp/security/server_credentials.h
@@ -1,20 +1,20 @@
-/*
- *
- * Copyright 2015 gRPC authors.
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
- */
+//
+//
+// Copyright 2015 gRPC authors.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+//
 
 #ifndef GRPCPP_SECURITY_SERVER_CREDENTIALS_H
 #define GRPCPP_SECURITY_SERVER_CREDENTIALS_H
@@ -23,6 +23,7 @@
 #include <vector>
 
 #include <grpc/grpc_security_constants.h>
+#include <grpcpp/impl/grpc_library.h>
 #include <grpcpp/security/auth_metadata_processor.h>
 #include <grpcpp/security/tls_credentials_options.h>
 #include <grpcpp/support/config.h>
@@ -64,20 +65,9 @@ struct SslServerCredentialsOptions {
 std::shared_ptr<ServerCredentials> XdsServerCredentials(
     const std::shared_ptr<ServerCredentials>& fallback_credentials);
 
-namespace experimental {
-GRPC_DEPRECATED(
-    "Use grpc::XdsServerCredentials instead. The experimental version will be "
-    "deleted after the 1.41 release.")
-std::shared_ptr<ServerCredentials> XdsServerCredentials(
-    const std::shared_ptr<ServerCredentials>& fallback_credentials);
-}  // namespace experimental
-
 /// Wrapper around \a grpc_server_credentials, a way to authenticate a server.
-class ServerCredentials : private grpc::GrpcLibraryCodegen {
+class ServerCredentials : private grpc::internal::GrpcLibrary {
  public:
-  ServerCredentials();
-  ~ServerCredentials() override;
-
   /// This method is not thread-safe and has to be called before the server is
   /// started. The last call to this function wins.
   virtual void SetAuthMetadataProcessor(
diff --git a/contrib/libs/grpc/include/grpcpp/security/tls_certificate_provider.h b/contrib/libs/grpc/include/grpcpp/security/tls_certificate_provider.h
index 1e1027afe9..d5636ee223 100644
--- a/contrib/libs/grpc/include/grpcpp/security/tls_certificate_provider.h
+++ b/contrib/libs/grpc/include/grpcpp/security/tls_certificate_provider.h
@@ -24,7 +24,6 @@
 #include <grpc/grpc_security_constants.h>
 #include <grpc/status.h>
 #include <grpc/support/log.h>
-#include <grpcpp/impl/codegen/grpc_library.h>
 #include <grpcpp/support/config.h>
 
 namespace grpc {
diff --git a/contrib/libs/grpc/include/grpcpp/security/tls_certificate_verifier.h b/contrib/libs/grpc/include/grpcpp/security/tls_certificate_verifier.h
index 7635916eb7..9d0d65a2bf 100644
--- a/contrib/libs/grpc/include/grpcpp/security/tls_certificate_verifier.h
+++ b/contrib/libs/grpc/include/grpcpp/security/tls_certificate_verifier.h
@@ -26,10 +26,10 @@
 #include <grpc/grpc_security_constants.h>
 #include <grpc/status.h>
 #include <grpc/support/log.h>
-#include <grpcpp/impl/codegen/grpc_library.h>
-#include <grpcpp/impl/codegen/sync.h>
 #include <grpcpp/impl/grpc_library.h>
+#include <grpcpp/impl/sync.h>
 #include <grpcpp/support/config.h>
+#include <grpcpp/support/status.h>
 #include <grpcpp/support/string_ref.h>
 
 // TODO(yihuazhang): remove the forward declaration here and include
@@ -141,8 +141,6 @@ class ExternalCertificateVerifier {
   // Subclass.
   template <typename Subclass, typename... Args>
   static std::shared_ptr<CertificateVerifier> Create(Args&&... args) {
-    grpc::internal::GrpcLibraryInitializer g_gli_initializer;
-    g_gli_initializer.summon();
     auto* external_verifier = new Subclass(std::forward<Args>(args)...);
     return std::make_shared<CertificateVerifier>(
         grpc_tls_certificate_verifier_external_create(
diff --git a/contrib/libs/grpc/include/grpcpp/security/tls_credentials_options.h b/contrib/libs/grpc/include/grpcpp/security/tls_credentials_options.h
index fcb5c3f4bf..0af12aebef 100644
--- a/contrib/libs/grpc/include/grpcpp/security/tls_credentials_options.h
+++ b/contrib/libs/grpc/include/grpcpp/security/tls_credentials_options.h
@@ -1,20 +1,20 @@
-/*
- *
- * Copyright 2019 gRPC authors.
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
- */
+//
+//
+// Copyright 2019 gRPC authors.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+//
 
 #ifndef GRPCPP_SECURITY_TLS_CREDENTIALS_OPTIONS_H
 #define GRPCPP_SECURITY_TLS_CREDENTIALS_OPTIONS_H
diff --git a/contrib/libs/grpc/include/grpcpp/server.h b/contrib/libs/grpc/include/grpcpp/server.h
index 50ee46f70e..b9d98504ff 100644
--- a/contrib/libs/grpc/include/grpcpp/server.h
+++ b/contrib/libs/grpc/include/grpcpp/server.h
@@ -1,20 +1,20 @@
-/*
- *
- * Copyright 2015 gRPC authors.
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
- */
+//
+//
+// Copyright 2015 gRPC authors.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+//
 
 #ifndef GRPCPP_SERVER_H
 #define GRPCPP_SERVER_H
@@ -23,7 +23,7 @@
 #pragma GCC system_header
 #endif
 
-#include <grpc/impl/codegen/port_platform.h>
+#include <grpc/support/port_platform.h>
 
 #include <list>
 #include <memory>
@@ -35,11 +35,10 @@
 #include <grpcpp/completion_queue.h>
 #include <grpcpp/health_check_service_interface.h>
 #include <grpcpp/impl/call.h>
-#include <grpcpp/impl/codegen/completion_queue.h>
-#include <grpcpp/impl/codegen/grpc_library.h>
-#include <grpcpp/impl/codegen/server_interface.h>
+#include <grpcpp/impl/grpc_library.h>
 #include <grpcpp/impl/rpc_service_method.h>
 #include <grpcpp/security/server_credentials.h>
+#include <grpcpp/server_interface.h>
 #include <grpcpp/support/channel_arguments.h>
 #include <grpcpp/support/client_interceptor.h>
 #include <grpcpp/support/config.h>
@@ -60,7 +59,7 @@ class ExternalConnectionAcceptorImpl;
 ///
 /// Use a \a grpc::ServerBuilder to create, configure, and start
 /// \a Server instances.
-class Server : public ServerInterface, private GrpcLibraryCodegen {
+class Server : public ServerInterface, private internal::GrpcLibrary {
  public:
   ~Server() Y_ABSL_LOCKS_EXCLUDED(mu_) override;
 
@@ -188,7 +187,8 @@ class Server : public ServerInterface, private GrpcLibraryCodegen {
          std::vector<
              std::unique_ptr<experimental::ServerInterceptorFactoryInterface>>
              interceptor_creators = std::vector<std::unique_ptr<
-                 experimental::ServerInterceptorFactoryInterface>>());
+                 experimental::ServerInterceptorFactoryInterface>>(),
+         experimental::ServerMetricRecorder* server_metric_recorder = nullptr);
 
   /// Start the server.
   ///
@@ -200,7 +200,6 @@ class Server : public ServerInterface, private GrpcLibraryCodegen {
 
   grpc_server* server() override { return server_; }
 
- protected:
   /// NOTE: This method is not part of the public API for this class.
   void set_health_check_service(
       std::unique_ptr<HealthCheckServiceInterface> service) {
@@ -261,6 +260,14 @@ class Server : public ServerInterface, private GrpcLibraryCodegen {
     return max_receive_message_size_;
   }
 
+  bool call_metric_recording_enabled() const override {
+    return call_metric_recording_enabled_;
+  }
+
+  experimental::ServerMetricRecorder* server_metric_recorder() const override {
+    return server_metric_recorder_;
+  }
+
   CompletionQueue* CallbackCQ() Y_ABSL_LOCKS_EXCLUDED(mu_) override;
 
   ServerInitializer* initializer();
@@ -344,6 +351,12 @@ class Server : public ServerInterface, private GrpcLibraryCodegen {
   // Shutdown.  Even though this is only used with NDEBUG, instantiate it in all
   // cases since otherwise the size will be inconsistent.
   std::vector<CompletionQueue*> cq_list_;
+
+  // Whetner per-call load reporting is enabled.
+  bool call_metric_recording_enabled_ = false;
+
+  // Interface to read or update server-wide metrics. Optional.
+  experimental::ServerMetricRecorder* server_metric_recorder_ = nullptr;
 };
 
 }  // namespace grpc
diff --git a/contrib/libs/grpc/include/grpcpp/server_builder.h b/contrib/libs/grpc/include/grpcpp/server_builder.h
index 3619018c5b..5afa218f4d 100644
--- a/contrib/libs/grpc/include/grpcpp/server_builder.h
+++ b/contrib/libs/grpc/include/grpcpp/server_builder.h
@@ -1,25 +1,25 @@
-/*
- *
- * Copyright 2015-2016 gRPC authors.
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
- */
+//
+//
+// Copyright 2015-2016 gRPC authors.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+//
 
 #ifndef GRPCPP_SERVER_BUILDER_H
 #define GRPCPP_SERVER_BUILDER_H
 
-#include <grpc/impl/codegen/port_platform.h>
+#include <grpc/support/port_platform.h>
 
 #include <climits>
 #include <map>
@@ -30,12 +30,12 @@
 #include <grpc/support/cpu.h>
 #include <grpc/support/workaround_list.h>
 #include <grpcpp/impl/channel_argument_option.h>
-#include <grpcpp/impl/codegen/server_interceptor.h>
 #include <grpcpp/impl/server_builder_option.h>
 #include <grpcpp/impl/server_builder_plugin.h>
 #include <grpcpp/security/authorization_policy_provider.h>
 #include <grpcpp/server.h>
 #include <grpcpp/support/config.h>
+#include <grpcpp/support/server_interceptor.h>
 
 struct grpc_resource_quota;
 
@@ -59,7 +59,6 @@ class ExternalConnectionAcceptorImpl;
 class CallbackGenericService;
 
 namespace experimental {
-class OrcaServerInterceptorFactory;
 // EXPERIMENTAL API:
 // Interface for a grpc server to build transports with connections created out
 // of band.
@@ -283,6 +282,16 @@ class ServerBuilder {
         std::shared_ptr<experimental::AuthorizationPolicyProviderInterface>
             provider);
 
+    /// Enables per-call load reporting. The server will automatically send the
+    /// load metrics after each RPC. The caller can report load metrics for the
+    /// current call to what ServerContext::ExperimentalGetCallMetricRecorder()
+    /// returns. The server merges metrics from the optional
+    /// server_metric_recorder when provided where the call metric recorder take
+    /// a higher precedence. The caller owns and must ensure the server metric
+    /// recorder outlives the server.
+    void EnableCallMetricRecording(
+        experimental::ServerMetricRecorder* server_metric_recorder = nullptr);
+
    private:
     ServerBuilder* builder_;
   };
@@ -328,6 +337,7 @@ class ServerBuilder {
   /// Experimental, to be deprecated
   std::vector<NamedService*> services() {
     std::vector<NamedService*> service_refs;
+    service_refs.reserve(services_.size());
     for (auto& ptr : services_) {
       service_refs.push_back(ptr.get());
     }
@@ -337,6 +347,7 @@ class ServerBuilder {
   /// Experimental, to be deprecated
   std::vector<grpc::ServerBuilderOption*> options() {
     std::vector<grpc::ServerBuilderOption*> option_refs;
+    option_refs.reserve(options_.size());
     for (auto& ptr : options_) {
       option_refs.push_back(ptr.get());
     }
@@ -353,7 +364,6 @@ class ServerBuilder {
 
  private:
   friend class grpc::testing::ServerBuilderPluginTest;
-  friend class grpc::experimental::OrcaServerInterceptorFactory;
 
   struct SyncServerSettings {
     SyncServerSettings()
@@ -404,14 +414,12 @@ class ServerBuilder {
   std::vector<
       std::unique_ptr<grpc::experimental::ServerInterceptorFactoryInterface>>
       interceptor_creators_;
-  std::vector<
-      std::unique_ptr<grpc::experimental::ServerInterceptorFactoryInterface>>
-      internal_interceptor_creators_;
   std::vector<std::shared_ptr<grpc::internal::ExternalConnectionAcceptorImpl>>
       acceptors_;
   grpc_server_config_fetcher* server_config_fetcher_ = nullptr;
   std::shared_ptr<experimental::AuthorizationPolicyProviderInterface>
       authorization_provider_;
+  experimental::ServerMetricRecorder* server_metric_recorder_ = nullptr;
 };
 
 }  // namespace grpc
diff --git a/contrib/libs/grpc/include/grpcpp/server_context.h b/contrib/libs/grpc/include/grpcpp/server_context.h
index ed6bd66d06..dada6901ed 100644
--- a/contrib/libs/grpc/include/grpcpp/server_context.h
+++ b/contrib/libs/grpc/include/grpcpp/server_context.h
@@ -1,24 +1,684 @@
-/*
- *
- * Copyright 2015 gRPC authors.
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
- */
+//
+//
+// Copyright 2015 gRPC authors.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+//
 
 #ifndef GRPCPP_SERVER_CONTEXT_H
 #define GRPCPP_SERVER_CONTEXT_H
 
-#include <grpcpp/impl/codegen/server_context.h>  // IWYU pragma: export
+#include <grpc/support/port_platform.h>
+
+#include <atomic>
+#include <cassert>
+#include <map>
+#include <memory>
+#include <type_traits>
+#include <vector>
+
+#include <grpc/grpc.h>
+#include <grpc/impl/compression_types.h>
+#include <grpcpp/impl/call.h>
+#include <grpcpp/impl/call_op_set.h>
+#include <grpcpp/impl/codegen/create_auth_context.h>
+#include <grpcpp/impl/codegen/metadata_map.h>
+#include <grpcpp/impl/completion_queue_tag.h>
+#include <grpcpp/impl/metadata_map.h>
+#include <grpcpp/impl/rpc_service_method.h>
+#include <grpcpp/security/auth_context.h>
+#include <grpcpp/support/callback_common.h>
+#include <grpcpp/support/config.h>
+#include <grpcpp/support/message_allocator.h>
+#include <grpcpp/support/server_callback.h>
+#include <grpcpp/support/server_interceptor.h>
+#include <grpcpp/support/status.h>
+#include <grpcpp/support/string_ref.h>
+#include <grpcpp/support/time.h>
+
+struct grpc_metadata;
+struct grpc_call;
+struct census_context;
+
+namespace grpc {
+template <class W, class R>
+class ServerAsyncReader;
+template <class W>
+class ServerAsyncWriter;
+template <class W>
+class ServerAsyncResponseWriter;
+template <class W, class R>
+class ServerAsyncReaderWriter;
+template <class R>
+class ServerReader;
+template <class W>
+class ServerWriter;
+
+namespace internal {
+template <class ServiceType, class RequestType, class ResponseType>
+class BidiStreamingHandler;
+template <class RequestType, class ResponseType>
+class CallbackUnaryHandler;
+template <class RequestType, class ResponseType>
+class CallbackClientStreamingHandler;
+template <class RequestType, class ResponseType>
+class CallbackServerStreamingHandler;
+template <class RequestType, class ResponseType>
+class CallbackBidiHandler;
+template <class ServiceType, class RequestType, class ResponseType>
+class ClientStreamingHandler;
+template <class ResponseType>
+void UnaryRunHandlerHelper(const MethodHandler::HandlerParameter&,
+                           ResponseType*, Status&);
+template <class ServiceType, class RequestType, class ResponseType,
+          class BaseRequestType, class BaseResponseType>
+class RpcMethodHandler;
+template <class Base>
+class FinishOnlyReactor;
+template <class W, class R>
+class ServerReaderWriterBody;
+template <class ServiceType, class RequestType, class ResponseType>
+class ServerStreamingHandler;
+class ServerReactor;
+template <class Streamer, bool WriteNeeded>
+class TemplatedBidiStreamingHandler;
+template <grpc::StatusCode code>
+class ErrorMethodHandler;
+}  // namespace internal
+
+class ClientContext;
+class CompletionQueue;
+class GenericServerContext;
+class Server;
+class ServerInterface;
+class ContextAllocator;
+class GenericCallbackServerContext;
+
+namespace internal {
+class Call;
+}  // namespace internal
+
+namespace testing {
+class InteropServerContextInspector;
+class ServerContextTestSpouse;
+class DefaultReactorTestPeer;
+}  // namespace testing
+
+namespace experimental {
+class CallMetricRecorder;
+class ServerMetricRecorder;
+}  // namespace experimental
+
+/// Base class of ServerContext.
+class ServerContextBase {
+ public:
+  virtual ~ServerContextBase();
+
+  /// Return the deadline for the server call.
+  std::chrono::system_clock::time_point deadline() const {
+    return grpc::Timespec2Timepoint(deadline_);
+  }
+
+  /// Return a \a gpr_timespec representation of the server call's deadline.
+  gpr_timespec raw_deadline() const { return deadline_; }
+
+  /// Add the (\a key, \a value) pair to the initial metadata
+  /// associated with a server call. These are made available at the client side
+  /// by the \a grpc::ClientContext::GetServerInitialMetadata() method.
+  ///
+  /// \warning This method should only be called before sending initial metadata
+  /// to the client (which can happen explicitly, or implicitly when sending a
+  /// a response message or status to the client).
+  ///
+  /// \param key The metadata key. If \a value is binary data, it must
+  /// end in "-bin".
+  /// \param value The metadata value. If its value is binary, the key name
+  /// must end in "-bin".
+  ///
+  /// Metadata must conform to the following format:
+  ///
+  ///\verbatim
+  /// Custom-Metadata -> Binary-Header / ASCII-Header
+  /// Binary-Header -> {Header-Name "-bin" } {binary value}
+  /// ASCII-Header -> Header-Name ASCII-Value
+  /// Header-Name -> 1*( %x30-39 / %x61-7A / "_" / "-" / ".") ; 0-9 a-z _ - .
+  /// ASCII-Value -> 1*( %x20-%x7E ) ; space and printable ASCII
+  ///\endverbatim
+  ///
+  void AddInitialMetadata(const TString& key, const TString& value);
+
+  /// Add the (\a key, \a value) pair to the initial metadata
+  /// associated with a server call. These are made available at the client
+  /// side by the \a grpc::ClientContext::GetServerTrailingMetadata() method.
+  ///
+  /// \warning This method should only be called before sending trailing
+  /// metadata to the client (which happens when the call is finished and a
+  /// status is sent to the client).
+  ///
+  /// \param key The metadata key. If \a value is binary data,
+  /// it must end in "-bin".
+  /// \param value The metadata value. If its value is binary, the key name
+  /// must end in "-bin".
+  ///
+  /// Metadata must conform to the following format:
+  ///
+  ///\verbatim
+  /// Custom-Metadata -> Binary-Header / ASCII-Header
+  /// Binary-Header -> {Header-Name "-bin" } {binary value}
+  /// ASCII-Header -> Header-Name ASCII-Value
+  /// Header-Name -> 1*( %x30-39 / %x61-7A / "_" / "-" / ".") ; 0-9 a-z _ - .
+  /// ASCII-Value -> 1*( %x20-%x7E ) ; space and printable ASCII
+  ///\endverbatim
+  ///
+  void AddTrailingMetadata(const TString& key, const TString& value);
+
+  /// Return whether this RPC failed before the server could provide its status
+  /// back to the client. This could be because of explicit API cancellation
+  /// from the client-side or server-side, because of deadline exceeded, network
+  /// connection reset, HTTP/2 parameter configuration (e.g., max message size,
+  /// max connection age), etc. It does NOT include failure due to a non-OK
+  /// status return from the server application's request handler, including
+  /// Status::CANCELLED.
+  ///
+  /// IsCancelled is always safe to call when using sync or callback API.
+  /// When using async API, it is only safe to call IsCancelled after
+  /// the AsyncNotifyWhenDone tag has been delivered. Thread-safe.
+  bool IsCancelled() const;
+
+  /// Cancel the Call from the server. This is a best-effort API and
+  /// depending on when it is called, the RPC may still appear successful to
+  /// the client. For example, if TryCancel() is called on a separate thread, it
+  /// might race with the server handler which might return success to the
+  /// client before TryCancel() was even started by the thread.
+  ///
+  /// It is the caller's responsibility to prevent such races and ensure that if
+  /// TryCancel() is called, the serverhandler must return Status::CANCELLED.
+  /// The only exception is that if the serverhandler is already returning an
+  /// error status code, it is ok to not return Status::CANCELLED even if
+  /// TryCancel() was called.
+  ///
+  /// For reasons such as the above, it is generally preferred to explicitly
+  /// finish an RPC by returning Status::CANCELLED rather than using TryCancel.
+  ///
+  /// Note that TryCancel() does not change any of the tags that are pending
+  /// on the completion queue. All pending tags will still be delivered
+  /// (though their ok result may reflect the effect of cancellation).
+  void TryCancel() const;
+
+  /// Return a collection of initial metadata key-value pairs sent from the
+  /// client. Note that keys may happen more than
+  /// once (ie, a \a std::multimap is returned).
+  ///
+  /// It is safe to use this method after initial metadata has been received,
+  /// Calls always begin with the client sending initial metadata, so this is
+  /// safe to access as soon as the call has begun on the server side.
+  ///
+  /// \return A multimap of initial metadata key-value pairs from the server.
+  const std::multimap<grpc::string_ref, grpc::string_ref>& client_metadata()
+      const {
+    return *client_metadata_.map();
+  }
+
+  /// Return the compression algorithm to be used by the server call.
+  grpc_compression_level compression_level() const {
+    return compression_level_;
+  }
+
+  /// Set \a level to be the compression level used for the server call.
+  ///
+  /// \param level The compression level used for the server call.
+  void set_compression_level(grpc_compression_level level) {
+    compression_level_set_ = true;
+    compression_level_ = level;
+  }
+
+  /// Return a bool indicating whether the compression level for this call
+  /// has been set (either implicitly or through a previous call to
+  /// \a set_compression_level.
+  bool compression_level_set() const { return compression_level_set_; }
+
+  /// Return the compression algorithm the server call will request be used.
+  /// Note that the gRPC runtime may decide to ignore this request, for example,
+  /// due to resource constraints, or if the server is aware the client doesn't
+  /// support the requested algorithm.
+  grpc_compression_algorithm compression_algorithm() const {
+    return compression_algorithm_;
+  }
+  /// Set \a algorithm to be the compression algorithm used for the server call.
+  ///
+  /// \param algorithm The compression algorithm used for the server call.
+  void set_compression_algorithm(grpc_compression_algorithm algorithm);
+
+  /// Set the serialized load reporting costs in \a cost_data for the call.
+  void SetLoadReportingCosts(const std::vector<TString>& cost_data);
+
+  /// Return the authentication context for this server call.
+  ///
+  /// \see grpc::AuthContext.
+  std::shared_ptr<const grpc::AuthContext> auth_context() const {
+    if (auth_context_ == nullptr) {
+      auth_context_ = grpc::CreateAuthContext(call_.call);
+    }
+    return auth_context_;
+  }
+
+  /// Return the peer uri in a string.
+  /// WARNING: this value is never authenticated or subject to any security
+  /// related code. It must not be used for any authentication related
+  /// functionality. Instead, use auth_context.
+  TString peer() const;
+
+  /// Get the census context associated with this server call.
+  const struct census_context* census_context() const;
+
+  /// Should be used for framework-level extensions only.
+  /// Applications never need to call this method.
+  grpc_call* c_call() { return call_.call; }
+
+  /// Get the \a CallMetricRecorder object for the current RPC.
+  /// Use it to record metrics during your RPC to send back to the
+  /// client in order to make load balancing decisions. This will
+  /// return nullptr if the feature hasn't been enabled using
+  /// \a EnableCallMetricRecording.
+  experimental::CallMetricRecorder* ExperimentalGetCallMetricRecorder() {
+    return call_metric_recorder_;
+  }
+
+  /// EXPERIMENTAL API
+  /// Returns the call's authority.
+  grpc::string_ref ExperimentalGetAuthority() const;
+
+ protected:
+  /// Async only. Has to be called before the rpc starts.
+  /// Returns the tag in completion queue when the rpc finishes.
+  /// IsCancelled() can then be called to check whether the rpc was cancelled.
+  /// TODO(vjpai): Fix this so that the tag is returned even if the call never
+  /// starts (https://github.com/grpc/grpc/issues/10136).
+  void AsyncNotifyWhenDone(void* tag) {
+    has_notify_when_done_tag_ = true;
+    async_notify_when_done_tag_ = tag;
+  }
+
+  /// NOTE: This is an API for advanced users who need custom allocators.
+  /// Get and maybe mutate the allocator state associated with the current RPC.
+  /// Currently only applicable for callback unary RPC methods.
+  RpcAllocatorState* GetRpcAllocatorState() { return message_allocator_state_; }
+
+  /// Get a library-owned default unary reactor for use in minimal reaction
+  /// cases. This supports typical unary RPC usage of providing a response and
+  /// status. It supports immediate Finish (finish from within the method
+  /// handler) or delayed Finish (finish called after the method handler
+  /// invocation). It does not support reacting to cancellation or completion,
+  /// or early sending of initial metadata. Since this is a library-owned
+  /// reactor, it should not be delete'd or freed in any way. This is more
+  /// efficient than creating a user-owned reactor both because of avoiding an
+  /// allocation and because its minimal reactions are optimized using a core
+  /// surface flag that allows their reactions to run inline without any
+  /// thread-hop.
+  ///
+  /// This method should not be called more than once or called after return
+  /// from the method handler.
+  grpc::ServerUnaryReactor* DefaultReactor() {
+    // Short-circuit the case where a default reactor was already set up by
+    // the TestPeer.
+    if (test_unary_ != nullptr) {
+      return reinterpret_cast<Reactor*>(&default_reactor_);
+    }
+    new (&default_reactor_) Reactor;
+#ifndef NDEBUG
+    bool old = false;
+    assert(default_reactor_used_.compare_exchange_strong(
+        old, true, std::memory_order_relaxed));
+#else
+    default_reactor_used_.store(true, std::memory_order_relaxed);
+#endif
+    return reinterpret_cast<Reactor*>(&default_reactor_);
+  }
+
+  /// Constructors for use by derived classes
+  ServerContextBase();
+  ServerContextBase(gpr_timespec deadline, grpc_metadata_array* arr);
+
+  void set_context_allocator(ContextAllocator* context_allocator) {
+    context_allocator_ = context_allocator;
+  }
+
+  ContextAllocator* context_allocator() const { return context_allocator_; }
+
+ private:
+  friend class grpc::testing::InteropServerContextInspector;
+  friend class grpc::testing::ServerContextTestSpouse;
+  friend class grpc::testing::DefaultReactorTestPeer;
+  friend class grpc::ServerInterface;
+  friend class grpc::Server;
+  template <class W, class R>
+  friend class grpc::ServerAsyncReader;
+  template <class W>
+  friend class grpc::ServerAsyncWriter;
+  template <class W>
+  friend class grpc::ServerAsyncResponseWriter;
+  template <class W, class R>
+  friend class grpc::ServerAsyncReaderWriter;
+  template <class R>
+  friend class grpc::ServerReader;
+  template <class W>
+  friend class grpc::ServerWriter;
+  template <class W, class R>
+  friend class grpc::internal::ServerReaderWriterBody;
+  template <class ResponseType>
+  friend void grpc::internal::UnaryRunHandlerHelper(
+      const internal::MethodHandler::HandlerParameter& param, ResponseType* rsp,
+      Status& status);
+  template <class ServiceType, class RequestType, class ResponseType,
+            class BaseRequestType, class BaseResponseType>
+  friend class grpc::internal::RpcMethodHandler;
+  template <class ServiceType, class RequestType, class ResponseType>
+  friend class grpc::internal::ClientStreamingHandler;
+  template <class ServiceType, class RequestType, class ResponseType>
+  friend class grpc::internal::ServerStreamingHandler;
+  template <class Streamer, bool WriteNeeded>
+  friend class grpc::internal::TemplatedBidiStreamingHandler;
+  template <class RequestType, class ResponseType>
+  friend class grpc::internal::CallbackUnaryHandler;
+  template <class RequestType, class ResponseType>
+  friend class grpc::internal::CallbackClientStreamingHandler;
+  template <class RequestType, class ResponseType>
+  friend class grpc::internal::CallbackServerStreamingHandler;
+  template <class RequestType, class ResponseType>
+  friend class grpc::internal::CallbackBidiHandler;
+  template <grpc::StatusCode code>
+  friend class grpc::internal::ErrorMethodHandler;
+  template <class Base>
+  friend class grpc::internal::FinishOnlyReactor;
+  friend class grpc::ClientContext;
+  friend class grpc::GenericServerContext;
+  friend class grpc::GenericCallbackServerContext;
+
+  /// Prevent copying.
+  ServerContextBase(const ServerContextBase&);
+  ServerContextBase& operator=(const ServerContextBase&);
+
+  class CompletionOp;
+
+  void BeginCompletionOp(
+      grpc::internal::Call* call, std::function<void(bool)> callback,
+      grpc::internal::ServerCallbackCall* callback_controller);
+  /// Return the tag queued by BeginCompletionOp()
+  grpc::internal::CompletionQueueTag* GetCompletionOpTag();
+
+  void set_call(grpc_call* call, bool call_metric_recording_enabled,
+                experimental::ServerMetricRecorder* server_metric_recorder) {
+    call_.call = call;
+    if (call_metric_recording_enabled) {
+      CreateCallMetricRecorder(server_metric_recorder);
+    }
+  }
+
+  void BindDeadlineAndMetadata(gpr_timespec deadline, grpc_metadata_array* arr);
+
+  uint32_t initial_metadata_flags() const { return 0; }
+
+  grpc::experimental::ServerRpcInfo* set_server_rpc_info(
+      const char* method, grpc::internal::RpcMethod::RpcType type,
+      const std::vector<std::unique_ptr<
+          grpc::experimental::ServerInterceptorFactoryInterface>>& creators) {
+    if (!creators.empty()) {
+      rpc_info_ = new grpc::experimental::ServerRpcInfo(this, method, type);
+      rpc_info_->RegisterInterceptors(creators);
+    }
+    return rpc_info_;
+  }
+
+  void set_message_allocator_state(RpcAllocatorState* allocator_state) {
+    message_allocator_state_ = allocator_state;
+  }
+
+  void MaybeMarkCancelledOnRead() {
+    if (grpc_call_failed_before_recv_message(call_.call)) {
+      marked_cancelled_.store(true, std::memory_order_release);
+    }
+  }
+
+  // This should be called only once and only when call metric recording is
+  // enabled.
+  void CreateCallMetricRecorder(
+      experimental::ServerMetricRecorder* server_metric_recorder = nullptr);
+
+  struct CallWrapper {
+    ~CallWrapper();
+
+    grpc_call* call = nullptr;
+  };
+
+  // NOTE: call_ must be the first data member of this object so that its
+  //       destructor is the last to be called, since its destructor may unref
+  //       the underlying core call which holds the arena that may be used to
+  //       hold this object.
+  CallWrapper call_;
+
+  CompletionOp* completion_op_ = nullptr;
+  bool has_notify_when_done_tag_ = false;
+  void* async_notify_when_done_tag_ = nullptr;
+  grpc::internal::CallbackWithSuccessTag completion_tag_;
+
+  gpr_timespec deadline_;
+  grpc::CompletionQueue* cq_ = nullptr;
+  bool sent_initial_metadata_ = false;
+  mutable std::shared_ptr<const grpc::AuthContext> auth_context_;
+  mutable grpc::internal::MetadataMap client_metadata_;
+  std::multimap<TString, TString> initial_metadata_;
+  std::multimap<TString, TString> trailing_metadata_;
+
+  bool compression_level_set_ = false;
+  grpc_compression_level compression_level_;
+  grpc_compression_algorithm compression_algorithm_;
+
+  grpc::internal::CallOpSet<grpc::internal::CallOpSendInitialMetadata,
+                            grpc::internal::CallOpSendMessage>
+      pending_ops_;
+  bool has_pending_ops_ = false;
+
+  grpc::experimental::ServerRpcInfo* rpc_info_ = nullptr;
+  RpcAllocatorState* message_allocator_state_ = nullptr;
+  ContextAllocator* context_allocator_ = nullptr;
+  experimental::CallMetricRecorder* call_metric_recorder_ = nullptr;
+
+  class Reactor : public grpc::ServerUnaryReactor {
+   public:
+    void OnCancel() override {}
+    void OnDone() override {}
+    // Override InternalInlineable for this class since its reactions are
+    // trivial and thus do not need to be run from the executor (triggering a
+    // thread hop). This should only be used by internal reactors (thus the
+    // name) and not by user application code.
+    bool InternalInlineable() override { return true; }
+  };
+
+  void SetupTestDefaultReactor(std::function<void(grpc::Status)> func) {
+    // NOLINTNEXTLINE(modernize-make-unique)
+    test_unary_.reset(new TestServerCallbackUnary(this, std::move(func)));
+  }
+  bool test_status_set() const {
+    return (test_unary_ != nullptr) && test_unary_->status_set();
+  }
+  grpc::Status test_status() const { return test_unary_->status(); }
+
+  class TestServerCallbackUnary : public grpc::ServerCallbackUnary {
+   public:
+    TestServerCallbackUnary(ServerContextBase* ctx,
+                            std::function<void(grpc::Status)> func)
+        : reactor_(ctx->DefaultReactor()), func_(std::move(func)) {
+      this->BindReactor(reactor_);
+    }
+    void Finish(grpc::Status s) override {
+      status_ = s;
+      func_(std::move(s));
+      status_set_.store(true, std::memory_order_release);
+    }
+    void SendInitialMetadata() override {}
+
+    bool status_set() const {
+      return status_set_.load(std::memory_order_acquire);
+    }
+    grpc::Status status() const { return status_; }
+
+   private:
+    void CallOnDone() override {}
+    grpc::internal::ServerReactor* reactor() override { return reactor_; }
+
+    grpc::ServerUnaryReactor* const reactor_;
+    std::atomic_bool status_set_{false};
+    grpc::Status status_;
+    const std::function<void(grpc::Status s)> func_;
+  };
+
+  typename std::aligned_storage<sizeof(Reactor), alignof(Reactor)>::type
+      default_reactor_;
+  std::atomic_bool default_reactor_used_{false};
+
+  std::atomic_bool marked_cancelled_{false};
+
+  std::unique_ptr<TestServerCallbackUnary> test_unary_;
+};
+
+/// A ServerContext or CallbackServerContext allows the code implementing a
+/// service handler to:
+///
+/// - Add custom initial and trailing metadata key-value pairs that will
+///   propagated to the client side.
+/// - Control call settings such as compression and authentication.
+/// - Access metadata coming from the client.
+/// - Get performance metrics (ie, census).
+///
+/// Context settings are only relevant to the call handler they are supplied to,
+/// that is to say, they aren't sticky across multiple calls. Some of these
+/// settings, such as the compression options, can be made persistent at server
+/// construction time by specifying the appropriate \a ChannelArguments
+/// to a \a grpc::ServerBuilder, via \a ServerBuilder::AddChannelArgument.
+///
+/// \warning ServerContext instances should \em not be reused across rpcs.
+class ServerContext : public ServerContextBase {
+ public:
+  ServerContext() {}  // for async calls
+
+  using ServerContextBase::AddInitialMetadata;
+  using ServerContextBase::AddTrailingMetadata;
+  using ServerContextBase::auth_context;
+  using ServerContextBase::c_call;
+  using ServerContextBase::census_context;
+  using ServerContextBase::client_metadata;
+  using ServerContextBase::compression_algorithm;
+  using ServerContextBase::compression_level;
+  using ServerContextBase::compression_level_set;
+  using ServerContextBase::deadline;
+  using ServerContextBase::IsCancelled;
+  using ServerContextBase::peer;
+  using ServerContextBase::raw_deadline;
+  using ServerContextBase::set_compression_algorithm;
+  using ServerContextBase::set_compression_level;
+  using ServerContextBase::SetLoadReportingCosts;
+  using ServerContextBase::TryCancel;
+
+  // Sync/CQ-based Async ServerContext only
+  using ServerContextBase::AsyncNotifyWhenDone;
+
+ private:
+  // Constructor for internal use by server only
+  friend class grpc::Server;
+  ServerContext(gpr_timespec deadline, grpc_metadata_array* arr)
+      : ServerContextBase(deadline, arr) {}
+
+  // CallbackServerContext only
+  using ServerContextBase::DefaultReactor;
+  using ServerContextBase::GetRpcAllocatorState;
+
+  /// Prevent copying.
+  ServerContext(const ServerContext&) = delete;
+  ServerContext& operator=(const ServerContext&) = delete;
+};
+
+class CallbackServerContext : public ServerContextBase {
+ public:
+  /// Public constructors are for direct use only by mocking tests. In practice,
+  /// these objects will be owned by the library.
+  CallbackServerContext() {}
+
+  using ServerContextBase::AddInitialMetadata;
+  using ServerContextBase::AddTrailingMetadata;
+  using ServerContextBase::auth_context;
+  using ServerContextBase::c_call;
+  using ServerContextBase::census_context;
+  using ServerContextBase::client_metadata;
+  using ServerContextBase::compression_algorithm;
+  using ServerContextBase::compression_level;
+  using ServerContextBase::compression_level_set;
+  using ServerContextBase::context_allocator;
+  using ServerContextBase::deadline;
+  using ServerContextBase::IsCancelled;
+  using ServerContextBase::peer;
+  using ServerContextBase::raw_deadline;
+  using ServerContextBase::set_compression_algorithm;
+  using ServerContextBase::set_compression_level;
+  using ServerContextBase::set_context_allocator;
+  using ServerContextBase::SetLoadReportingCosts;
+  using ServerContextBase::TryCancel;
+
+  // CallbackServerContext only
+  using ServerContextBase::DefaultReactor;
+  using ServerContextBase::GetRpcAllocatorState;
+
+ private:
+  // Sync/CQ-based Async ServerContext only
+  using ServerContextBase::AsyncNotifyWhenDone;
+
+  /// Prevent copying.
+  CallbackServerContext(const CallbackServerContext&) = delete;
+  CallbackServerContext& operator=(const CallbackServerContext&) = delete;
+};
+
+/// A CallbackServerContext allows users to use the contents of the
+/// CallbackServerContext or GenericCallbackServerContext structure for the
+/// callback API.
+/// The library will invoke the allocator any time a new call is initiated.
+/// and call the Release method after the server OnDone.
+class ContextAllocator {
+ public:
+  virtual ~ContextAllocator() {}
+
+  virtual CallbackServerContext* NewCallbackServerContext() { return nullptr; }
+
+  virtual GenericCallbackServerContext* NewGenericCallbackServerContext() {
+    return nullptr;
+  }
+
+  virtual void Release(CallbackServerContext*) {}
+
+  virtual void Release(GenericCallbackServerContext*) {}
+};
+
+}  // namespace grpc
+
+static_assert(
+    std::is_base_of<grpc::ServerContextBase, grpc::ServerContext>::value,
+    "improper base class");
+static_assert(std::is_base_of<grpc::ServerContextBase,
+                              grpc::CallbackServerContext>::value,
+              "improper base class");
+static_assert(sizeof(grpc::ServerContextBase) == sizeof(grpc::ServerContext),
+              "wrong size");
+static_assert(sizeof(grpc::ServerContextBase) ==
+                  sizeof(grpc::CallbackServerContext),
+              "wrong size");
 
 #endif  // GRPCPP_SERVER_CONTEXT_H
diff --git a/contrib/libs/grpc/include/grpcpp/impl/codegen/server_interface.h b/contrib/libs/grpc/include/grpcpp/server_interface.h
index 62a43b1bb4..e7790c24b1 100644
--- a/contrib/libs/grpc/include/grpcpp/impl/codegen/server_interface.h
+++ b/contrib/libs/grpc/include/grpcpp/server_interface.h
@@ -1,36 +1,36 @@
-/*
- *
- * Copyright 2015 gRPC authors.
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
- */
-
-#ifndef GRPCPP_IMPL_CODEGEN_SERVER_INTERFACE_H
-#define GRPCPP_IMPL_CODEGEN_SERVER_INTERFACE_H
-
-// IWYU pragma: private
-
-#include <grpc/impl/codegen/port_platform.h>
-
-#include <grpc/impl/codegen/grpc_types.h>
-#include <grpcpp/impl/codegen/call.h>
-#include <grpcpp/impl/codegen/call_hook.h>
-#include <grpcpp/impl/codegen/completion_queue_tag.h>
-#include <grpcpp/impl/codegen/core_codegen_interface.h>
+//
+//
+// Copyright 2015 gRPC authors.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+//
+
+#ifndef GRPCPP_SERVER_INTERFACE_H
+#define GRPCPP_SERVER_INTERFACE_H
+
+#include <grpc/support/port_platform.h>
+
+#include <grpc/grpc.h>
+#include <grpc/impl/grpc_types.h>
+#include <grpc/support/log.h>
+#include <grpc/support/time.h>
+#include <grpcpp/impl/call.h>
+#include <grpcpp/impl/call_hook.h>
 #include <grpcpp/impl/codegen/interceptor_common.h>
-#include <grpcpp/impl/codegen/rpc_service_method.h>
-#include <grpcpp/impl/codegen/server_context.h>
+#include <grpcpp/impl/completion_queue_tag.h>
+#include <grpcpp/impl/rpc_service_method.h>
+#include <grpcpp/server_context.h>
 #include <grpcpp/support/byte_buffer.h>
 
 namespace grpc {
@@ -43,8 +43,6 @@ class ServerCompletionQueue;
 class ServerCredentials;
 class Service;
 
-extern CoreCodegenInterface* g_core_codegen_interface;
-
 /// Models a gRPC server.
 ///
 /// Servers are configured and started via \a grpc::ServerBuilder.
@@ -56,6 +54,7 @@ class CallbackGenericService;
 
 namespace experimental {
 class ServerInterceptorFactoryInterface;
+class ServerMetricRecorder;
 }  // namespace experimental
 
 class ServerInterface : public internal::CallHook {
@@ -104,10 +103,7 @@ class ServerInterface : public internal::CallHook {
   /// All completion queue associated with the server (for example, for async
   /// serving) must be shutdown *after* this method has returned:
   /// See \a ServerBuilder::AddCompletionQueue for details.
-  void Shutdown() {
-    ShutdownInternal(
-        g_core_codegen_interface->gpr_inf_future(GPR_CLOCK_MONOTONIC));
-  }
+  void Shutdown() { ShutdownInternal(gpr_inf_future(GPR_CLOCK_MONOTONIC)); }
 
   /// Block waiting for all work to complete.
   ///
@@ -190,6 +186,8 @@ class ServerInterface : public internal::CallHook {
     internal::Call call_wrapper_;
     internal::InterceptorBatchMethodsImpl interceptor_methods_;
     bool done_intercepting_;
+    bool call_metric_recording_enabled_;
+    experimental::ServerMetricRecorder* server_metric_recorder_;
   };
 
   /// RegisteredAsyncRequest is not part of the C++ API
@@ -204,7 +202,7 @@ class ServerInterface : public internal::CallHook {
                            internal::RpcMethod::RpcType type);
 
     bool FinalizeResult(void** tag, bool* status) override {
-      /* If we are done intercepting, then there is nothing more for us to do */
+      // If we are done intercepting, then there is nothing more for us to do
       if (done_intercepting_) {
         return BaseAsyncRequest::FinalizeResult(tag, status);
       }
@@ -262,7 +260,7 @@ class ServerInterface : public internal::CallHook {
     }
 
     bool FinalizeResult(void** tag, bool* status) override {
-      /* If we are done intercepting, then there is nothing more for us to do */
+      // If we are done intercepting, then there is nothing more for us to do
       if (done_intercepting_) {
         return RegisteredAsyncRequest::FinalizeResult(tag, status);
       }
@@ -274,9 +272,9 @@ class ServerInterface : public internal::CallHook {
           // a new instance of ourselves to request another call.  We then
           // return false, which prevents the call from being returned to
           // the application.
-          g_core_codegen_interface->grpc_call_cancel_with_status(
-              call_, GRPC_STATUS_INTERNAL, "Unable to parse request", nullptr);
-          g_core_codegen_interface->grpc_call_unref(call_);
+          grpc_call_cancel_with_status(call_, GRPC_STATUS_INTERNAL,
+                                       "Unable to parse request", nullptr);
+          grpc_call_unref(call_);
           new PayloadAsyncRequest(registered_method_, server_, context_,
                                   stream_, call_cq_, notification_cq_, tag_,
                                   request_);
@@ -284,7 +282,7 @@ class ServerInterface : public internal::CallHook {
           return false;
         }
       }
-      /* Set interception point for recv message */
+      // Set interception point for recv message
       interceptor_methods_.AddInterceptionHookPoint(
           experimental::InterceptionHookPoints::POST_RECV_MESSAGE);
       interceptor_methods_.SetRecvMessage(request_, nullptr);
@@ -321,7 +319,7 @@ class ServerInterface : public internal::CallHook {
                         grpc::CompletionQueue* call_cq,
                         grpc::ServerCompletionQueue* notification_cq, void* tag,
                         Message* message) {
-    GPR_CODEGEN_ASSERT(method);
+    GPR_ASSERT(method);
     new PayloadAsyncRequest<Message>(method, this, context, stream, call_cq,
                                      notification_cq, tag, message);
   }
@@ -332,7 +330,7 @@ class ServerInterface : public internal::CallHook {
                         grpc::CompletionQueue* call_cq,
                         grpc::ServerCompletionQueue* notification_cq,
                         void* tag) {
-    GPR_CODEGEN_ASSERT(method);
+    GPR_ASSERT(method);
     new NoPayloadAsyncRequest(method, this, context, stream, call_cq,
                               notification_cq, tag);
   }
@@ -358,6 +356,13 @@ class ServerInterface : public internal::CallHook {
     return nullptr;
   }
 
+  // Whether per-call load reporting is enabled.
+  virtual bool call_metric_recording_enabled() const = 0;
+
+  // Interface to read or update server-wide metrics. Returns null when not set.
+  virtual experimental::ServerMetricRecorder* server_metric_recorder()
+      const = 0;
+
   // A method to get the callbackable completion queue associated with this
   // server. If the return value is nullptr, this server doesn't support
   // callback operations.
@@ -370,4 +375,4 @@ class ServerInterface : public internal::CallHook {
 
 }  // namespace grpc
 
-#endif  // GRPCPP_IMPL_CODEGEN_SERVER_INTERFACE_H
+#endif  // GRPCPP_SERVER_INTERFACE_H
diff --git a/contrib/libs/grpc/include/grpcpp/server_posix.h b/contrib/libs/grpc/include/grpcpp/server_posix.h
index 2e938624d2..75ef4470b7 100644
--- a/contrib/libs/grpc/include/grpcpp/server_posix.h
+++ b/contrib/libs/grpc/include/grpcpp/server_posix.h
@@ -1,20 +1,20 @@
-/*
- *
- * Copyright 2016 gRPC authors.
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
- */
+//
+//
+// Copyright 2016 gRPC authors.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+//
 
 #ifndef GRPCPP_SERVER_POSIX_H
 #define GRPCPP_SERVER_POSIX_H
diff --git a/contrib/libs/grpc/include/grpcpp/support/async_stream.h b/contrib/libs/grpc/include/grpcpp/support/async_stream.h
index 18e84dfcdb..1bf67d301d 100644
--- a/contrib/libs/grpc/include/grpcpp/support/async_stream.h
+++ b/contrib/libs/grpc/include/grpcpp/support/async_stream.h
@@ -1,28 +1,28 @@
-/*
- *
- * Copyright 2015 gRPC authors.
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
- */
+//
+//
+// Copyright 2015 gRPC authors.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+//
 
 #ifndef GRPCPP_SUPPORT_ASYNC_STREAM_H
 #define GRPCPP_SUPPORT_ASYNC_STREAM_H
 
 #include <grpc/grpc.h>
+#include <grpc/support/log.h>
 #include <grpcpp/impl/call.h>
-#include <grpcpp/impl/codegen/channel_interface.h>
-#include <grpcpp/impl/codegen/core_codegen_interface.h>
+#include <grpcpp/impl/channel_interface.h>
 #include <grpcpp/impl/service_type.h>
 #include <grpcpp/server_context.h>
 #include <grpcpp/support/status.h>
@@ -185,8 +185,8 @@ class ClientAsyncReaderFactory {
                                       grpc::ClientContext* context,
                                       const W& request, bool start, void* tag) {
     grpc::internal::Call call = channel->CreateCall(method, context, cq);
-    return new (grpc::g_core_codegen_interface->grpc_call_arena_alloc(
-        call.call(), sizeof(ClientAsyncReader<R>)))
+    return new (
+        grpc_call_arena_alloc(call.call(), sizeof(ClientAsyncReader<R>)))
         ClientAsyncReader<R>(call, context, request, start, tag);
   }
 };
@@ -200,7 +200,7 @@ class ClientAsyncReader final : public ClientAsyncReaderInterface<R> {
  public:
   // always allocated against a call arena, no memory free required
   static void operator delete(void* /*ptr*/, std::size_t size) {
-    GPR_CODEGEN_ASSERT(size == sizeof(ClientAsyncReader));
+    GPR_ASSERT(size == sizeof(ClientAsyncReader));
   }
 
   // This operator should never be called as the memory should be freed as part
@@ -208,10 +208,10 @@ class ClientAsyncReader final : public ClientAsyncReaderInterface<R> {
   // delete to the operator new so that some compilers will not complain (see
   // https://github.com/grpc/grpc/issues/11301) Note at the time of adding this
   // there are no tests catching the compiler warning.
-  static void operator delete(void*, void*) { GPR_CODEGEN_ASSERT(false); }
+  static void operator delete(void*, void*) { GPR_ASSERT(false); }
 
   void StartCall(void* tag) override {
-    GPR_CODEGEN_ASSERT(!started_);
+    GPR_ASSERT(!started_);
     started_ = true;
     StartCallInternal(tag);
   }
@@ -225,8 +225,8 @@ class ClientAsyncReader final : public ClientAsyncReaderInterface<R> {
   ///     calling code can access the received metadata through the
   ///     \a ClientContext.
   void ReadInitialMetadata(void* tag) override {
-    GPR_CODEGEN_ASSERT(started_);
-    GPR_CODEGEN_ASSERT(!context_->initial_metadata_received_);
+    GPR_ASSERT(started_);
+    GPR_ASSERT(!context_->initial_metadata_received_);
 
     meta_ops_.set_output_tag(tag);
     meta_ops_.RecvInitialMetadata(context_);
@@ -234,7 +234,7 @@ class ClientAsyncReader final : public ClientAsyncReaderInterface<R> {
   }
 
   void Read(R* msg, void* tag) override {
-    GPR_CODEGEN_ASSERT(started_);
+    GPR_ASSERT(started_);
     read_ops_.set_output_tag(tag);
     if (!context_->initial_metadata_received_) {
       read_ops_.RecvInitialMetadata(context_);
@@ -249,7 +249,7 @@ class ClientAsyncReader final : public ClientAsyncReaderInterface<R> {
   ///   - the \a ClientContext associated with this call is updated with
   ///     possible initial and trailing metadata received from the server.
   void Finish(grpc::Status* status, void* tag) override {
-    GPR_CODEGEN_ASSERT(started_);
+    GPR_ASSERT(started_);
     finish_ops_.set_output_tag(tag);
     if (!context_->initial_metadata_received_) {
       finish_ops_.RecvInitialMetadata(context_);
@@ -265,12 +265,12 @@ class ClientAsyncReader final : public ClientAsyncReaderInterface<R> {
                     const W& request, bool start, void* tag)
       : context_(context), call_(call), started_(start) {
     // TODO(ctiller): don't assert
-    GPR_CODEGEN_ASSERT(init_ops_.SendMessage(request).ok());
+    GPR_ASSERT(init_ops_.SendMessage(request).ok());
     init_ops_.ClientSendClose();
     if (start) {
       StartCallInternal(tag);
     } else {
-      GPR_CODEGEN_ASSERT(tag == nullptr);
+      GPR_ASSERT(tag == nullptr);
     }
   }
 
@@ -318,7 +318,7 @@ class ClientAsyncWriterFactory {
   /// Create a stream object.
   /// Start the RPC if \a start is set
   /// \a tag will be notified on \a cq when the call has been started (i.e.
-  /// intitial metadata sent) and \a request has been written out.
+  /// initial metadata sent) and \a request has been written out.
   /// If \a start is not set, \a tag must be nullptr and the actual call
   /// must be initiated by StartCall
   /// Note that \a context will be used to fill in custom initial metadata
@@ -333,8 +333,8 @@ class ClientAsyncWriterFactory {
                                       grpc::ClientContext* context, R* response,
                                       bool start, void* tag) {
     grpc::internal::Call call = channel->CreateCall(method, context, cq);
-    return new (grpc::g_core_codegen_interface->grpc_call_arena_alloc(
-        call.call(), sizeof(ClientAsyncWriter<W>)))
+    return new (
+        grpc_call_arena_alloc(call.call(), sizeof(ClientAsyncWriter<W>)))
         ClientAsyncWriter<W>(call, context, response, start, tag);
   }
 };
@@ -348,7 +348,7 @@ class ClientAsyncWriter final : public ClientAsyncWriterInterface<W> {
  public:
   // always allocated against a call arena, no memory free required
   static void operator delete(void* /*ptr*/, std::size_t size) {
-    GPR_CODEGEN_ASSERT(size == sizeof(ClientAsyncWriter));
+    GPR_ASSERT(size == sizeof(ClientAsyncWriter));
   }
 
   // This operator should never be called as the memory should be freed as part
@@ -356,10 +356,10 @@ class ClientAsyncWriter final : public ClientAsyncWriterInterface<W> {
   // delete to the operator new so that some compilers will not complain (see
   // https://github.com/grpc/grpc/issues/11301) Note at the time of adding this
   // there are no tests catching the compiler warning.
-  static void operator delete(void*, void*) { GPR_CODEGEN_ASSERT(false); }
+  static void operator delete(void*, void*) { GPR_ASSERT(false); }
 
   void StartCall(void* tag) override {
-    GPR_CODEGEN_ASSERT(!started_);
+    GPR_ASSERT(!started_);
     started_ = true;
     StartCallInternal(tag);
   }
@@ -372,8 +372,8 @@ class ClientAsyncWriter final : public ClientAsyncWriterInterface<W> {
   ///     associated with this call is updated, and the calling code can access
   ///     the received metadata through the \a ClientContext.
   void ReadInitialMetadata(void* tag) override {
-    GPR_CODEGEN_ASSERT(started_);
-    GPR_CODEGEN_ASSERT(!context_->initial_metadata_received_);
+    GPR_ASSERT(started_);
+    GPR_ASSERT(!context_->initial_metadata_received_);
 
     meta_ops_.set_output_tag(tag);
     meta_ops_.RecvInitialMetadata(context_);
@@ -381,27 +381,27 @@ class ClientAsyncWriter final : public ClientAsyncWriterInterface<W> {
   }
 
   void Write(const W& msg, void* tag) override {
-    GPR_CODEGEN_ASSERT(started_);
+    GPR_ASSERT(started_);
     write_ops_.set_output_tag(tag);
     // TODO(ctiller): don't assert
-    GPR_CODEGEN_ASSERT(write_ops_.SendMessage(msg).ok());
+    GPR_ASSERT(write_ops_.SendMessage(msg).ok());
     call_.PerformOps(&write_ops_);
   }
 
   void Write(const W& msg, grpc::WriteOptions options, void* tag) override {
-    GPR_CODEGEN_ASSERT(started_);
+    GPR_ASSERT(started_);
     write_ops_.set_output_tag(tag);
     if (options.is_last_message()) {
       options.set_buffer_hint();
       write_ops_.ClientSendClose();
     }
     // TODO(ctiller): don't assert
-    GPR_CODEGEN_ASSERT(write_ops_.SendMessage(msg, options).ok());
+    GPR_ASSERT(write_ops_.SendMessage(msg, options).ok());
     call_.PerformOps(&write_ops_);
   }
 
   void WritesDone(void* tag) override {
-    GPR_CODEGEN_ASSERT(started_);
+    GPR_ASSERT(started_);
     write_ops_.set_output_tag(tag);
     write_ops_.ClientSendClose();
     call_.PerformOps(&write_ops_);
@@ -415,7 +415,7 @@ class ClientAsyncWriter final : public ClientAsyncWriterInterface<W> {
   ///   - attempts to fill in the \a response parameter passed to this class's
   ///     constructor with the server's response message.
   void Finish(grpc::Status* status, void* tag) override {
-    GPR_CODEGEN_ASSERT(started_);
+    GPR_ASSERT(started_);
     finish_ops_.set_output_tag(tag);
     if (!context_->initial_metadata_received_) {
       finish_ops_.RecvInitialMetadata(context_);
@@ -435,7 +435,7 @@ class ClientAsyncWriter final : public ClientAsyncWriterInterface<W> {
     if (start) {
       StartCallInternal(tag);
     } else {
-      GPR_CODEGEN_ASSERT(tag == nullptr);
+      GPR_ASSERT(tag == nullptr);
     }
   }
 
@@ -488,7 +488,7 @@ class ClientAsyncReaderWriterFactory {
   /// Create a stream object.
   /// Start the RPC request if \a start is set.
   /// \a tag will be notified on \a cq when the call has been started (i.e.
-  /// intitial metadata sent). If \a start is not set, \a tag must be
+  /// initial metadata sent). If \a start is not set, \a tag must be
   /// nullptr and the actual call must be initiated by StartCall
   /// Note that \a context will be used to fill in custom initial metadata
   /// used to send to the server when starting the call.
@@ -498,8 +498,8 @@ class ClientAsyncReaderWriterFactory {
       bool start, void* tag) {
     grpc::internal::Call call = channel->CreateCall(method, context, cq);
 
-    return new (grpc::g_core_codegen_interface->grpc_call_arena_alloc(
-        call.call(), sizeof(ClientAsyncReaderWriter<W, R>)))
+    return new (grpc_call_arena_alloc(call.call(),
+                                      sizeof(ClientAsyncReaderWriter<W, R>)))
         ClientAsyncReaderWriter<W, R>(call, context, start, tag);
   }
 };
@@ -515,7 +515,7 @@ class ClientAsyncReaderWriter final
  public:
   // always allocated against a call arena, no memory free required
   static void operator delete(void* /*ptr*/, std::size_t size) {
-    GPR_CODEGEN_ASSERT(size == sizeof(ClientAsyncReaderWriter));
+    GPR_ASSERT(size == sizeof(ClientAsyncReaderWriter));
   }
 
   // This operator should never be called as the memory should be freed as part
@@ -523,10 +523,10 @@ class ClientAsyncReaderWriter final
   // delete to the operator new so that some compilers will not complain (see
   // https://github.com/grpc/grpc/issues/11301) Note at the time of adding this
   // there are no tests catching the compiler warning.
-  static void operator delete(void*, void*) { GPR_CODEGEN_ASSERT(false); }
+  static void operator delete(void*, void*) { GPR_ASSERT(false); }
 
   void StartCall(void* tag) override {
-    GPR_CODEGEN_ASSERT(!started_);
+    GPR_ASSERT(!started_);
     started_ = true;
     StartCallInternal(tag);
   }
@@ -539,8 +539,8 @@ class ClientAsyncReaderWriter final
   ///     is updated with it, and then the receiving initial metadata can
   ///     be accessed through this \a ClientContext.
   void ReadInitialMetadata(void* tag) override {
-    GPR_CODEGEN_ASSERT(started_);
-    GPR_CODEGEN_ASSERT(!context_->initial_metadata_received_);
+    GPR_ASSERT(started_);
+    GPR_ASSERT(!context_->initial_metadata_received_);
 
     meta_ops_.set_output_tag(tag);
     meta_ops_.RecvInitialMetadata(context_);
@@ -548,7 +548,7 @@ class ClientAsyncReaderWriter final
   }
 
   void Read(R* msg, void* tag) override {
-    GPR_CODEGEN_ASSERT(started_);
+    GPR_ASSERT(started_);
     read_ops_.set_output_tag(tag);
     if (!context_->initial_metadata_received_) {
       read_ops_.RecvInitialMetadata(context_);
@@ -558,27 +558,27 @@ class ClientAsyncReaderWriter final
   }
 
   void Write(const W& msg, void* tag) override {
-    GPR_CODEGEN_ASSERT(started_);
+    GPR_ASSERT(started_);
     write_ops_.set_output_tag(tag);
     // TODO(ctiller): don't assert
-    GPR_CODEGEN_ASSERT(write_ops_.SendMessage(msg).ok());
+    GPR_ASSERT(write_ops_.SendMessage(msg).ok());
     call_.PerformOps(&write_ops_);
   }
 
   void Write(const W& msg, grpc::WriteOptions options, void* tag) override {
-    GPR_CODEGEN_ASSERT(started_);
+    GPR_ASSERT(started_);
     write_ops_.set_output_tag(tag);
     if (options.is_last_message()) {
       options.set_buffer_hint();
       write_ops_.ClientSendClose();
     }
     // TODO(ctiller): don't assert
-    GPR_CODEGEN_ASSERT(write_ops_.SendMessage(msg, options).ok());
+    GPR_ASSERT(write_ops_.SendMessage(msg, options).ok());
     call_.PerformOps(&write_ops_);
   }
 
   void WritesDone(void* tag) override {
-    GPR_CODEGEN_ASSERT(started_);
+    GPR_ASSERT(started_);
     write_ops_.set_output_tag(tag);
     write_ops_.ClientSendClose();
     call_.PerformOps(&write_ops_);
@@ -589,7 +589,7 @@ class ClientAsyncReaderWriter final
   ///   - the \a ClientContext associated with this call is updated with
   ///     possible initial and trailing metadata sent from the server.
   void Finish(grpc::Status* status, void* tag) override {
-    GPR_CODEGEN_ASSERT(started_);
+    GPR_ASSERT(started_);
     finish_ops_.set_output_tag(tag);
     if (!context_->initial_metadata_received_) {
       finish_ops_.RecvInitialMetadata(context_);
@@ -606,7 +606,7 @@ class ClientAsyncReaderWriter final
     if (start) {
       StartCallInternal(tag);
     } else {
-      GPR_CODEGEN_ASSERT(tag == nullptr);
+      GPR_ASSERT(tag == nullptr);
     }
   }
 
@@ -651,7 +651,7 @@ class ServerAsyncReaderInterface
   ///
   /// It is appropriate to call this method when:
   ///   * all messages from the client have been received (either known
-  ///     implictly, or explicitly because a previous
+  ///     implicitly, or explicitly because a previous
   ///     \a AsyncReaderInterface::Read operation with a non-ok result,
   ///     e.g., cq->Next(&read_tag, &ok) filled in 'ok' with 'false').
   ///
@@ -706,7 +706,7 @@ class ServerAsyncReader final : public ServerAsyncReaderInterface<W, R> {
   ///   - The initial metadata that will be sent to the client from this op will
   ///     be taken from the \a ServerContext associated with the call.
   void SendInitialMetadata(void* tag) override {
-    GPR_CODEGEN_ASSERT(!ctx_->sent_initial_metadata_);
+    GPR_ASSERT(!ctx_->sent_initial_metadata_);
 
     meta_ops_.set_output_tag(tag);
     meta_ops_.SendInitialMetadata(&ctx_->initial_metadata_,
@@ -727,7 +727,7 @@ class ServerAsyncReader final : public ServerAsyncReaderInterface<W, R> {
   /// See the \a ServerAsyncReaderInterface.Read method for semantics
   ///
   /// Side effect:
-  ///   - also sends initial metadata if not alreay sent.
+  ///   - also sends initial metadata if not already sent.
   ///   - uses the \a ServerContext associated with this call to send possible
   ///     initial and trailing metadata.
   ///
@@ -758,14 +758,14 @@ class ServerAsyncReader final : public ServerAsyncReaderInterface<W, R> {
   /// See the \a ServerAsyncReaderInterface.Read method for semantics
   ///
   /// Side effect:
-  ///   - also sends initial metadata if not alreay sent.
+  ///   - also sends initial metadata if not already sent.
   ///   - uses the \a ServerContext associated with this call to send possible
   ///     initial and trailing metadata.
   ///
   /// gRPC doesn't take ownership or a reference to \a status, so it is safe to
   /// to deallocate once FinishWithError returns.
   void FinishWithError(const grpc::Status& status, void* tag) override {
-    GPR_CODEGEN_ASSERT(!status.ok());
+    GPR_ASSERT(!status.ok());
     finish_ops_.set_output_tag(tag);
     if (!ctx_->sent_initial_metadata_) {
       finish_ops_.SendInitialMetadata(&ctx_->initial_metadata_,
@@ -805,7 +805,7 @@ class ServerAsyncWriterInterface
   ///
   /// It is appropriate to call this method when either:
   ///   * all messages from the client have been received (either known
-  ///     implictly, or explicitly because a previous \a
+  ///     implicitly, or explicitly because a previous \a
   ///     AsyncReaderInterface::Read operation with a non-ok
   ///     result (e.g., cq->Next(&read_tag, &ok) filled in 'ok' with 'false'.
   ///   * it is desired to end the call early with some non-OK status code.
@@ -855,7 +855,7 @@ class ServerAsyncWriter final : public ServerAsyncWriterInterface<W> {
   ///
   /// \param[in] tag Tag identifying this request.
   void SendInitialMetadata(void* tag) override {
-    GPR_CODEGEN_ASSERT(!ctx_->sent_initial_metadata_);
+    GPR_ASSERT(!ctx_->sent_initial_metadata_);
 
     meta_ops_.set_output_tag(tag);
     meta_ops_.SendInitialMetadata(&ctx_->initial_metadata_,
@@ -871,7 +871,7 @@ class ServerAsyncWriter final : public ServerAsyncWriterInterface<W> {
     write_ops_.set_output_tag(tag);
     EnsureInitialMetadataSent(&write_ops_);
     // TODO(ctiller): don't assert
-    GPR_CODEGEN_ASSERT(write_ops_.SendMessage(msg).ok());
+    GPR_ASSERT(write_ops_.SendMessage(msg).ok());
     call_.PerformOps(&write_ops_);
   }
 
@@ -883,7 +883,7 @@ class ServerAsyncWriter final : public ServerAsyncWriterInterface<W> {
 
     EnsureInitialMetadataSent(&write_ops_);
     // TODO(ctiller): don't assert
-    GPR_CODEGEN_ASSERT(write_ops_.SendMessage(msg, options).ok());
+    GPR_ASSERT(write_ops_.SendMessage(msg, options).ok());
     call_.PerformOps(&write_ops_);
   }
 
@@ -902,7 +902,7 @@ class ServerAsyncWriter final : public ServerAsyncWriterInterface<W> {
     write_ops_.set_output_tag(tag);
     EnsureInitialMetadataSent(&write_ops_);
     options.set_buffer_hint();
-    GPR_CODEGEN_ASSERT(write_ops_.SendMessage(msg, options).ok());
+    GPR_ASSERT(write_ops_.SendMessage(msg, options).ok());
     write_ops_.ServerSendStatus(&ctx_->trailing_metadata_, status);
     call_.PerformOps(&write_ops_);
   }
@@ -967,7 +967,7 @@ class ServerAsyncReaderWriterInterface
   ///
   /// It is appropriate to call this method when either:
   ///   * all messages from the client have been received (either known
-  ///     implictly, or explicitly because a previous \a
+  ///     implicitly, or explicitly because a previous \a
   ///     AsyncReaderInterface::Read operation
   ///     with a non-ok result (e.g., cq->Next(&read_tag, &ok) filled in 'ok'
   ///     with 'false'.
@@ -1021,7 +1021,7 @@ class ServerAsyncReaderWriter final
   ///
   /// \param[in] tag Tag identifying this request.
   void SendInitialMetadata(void* tag) override {
-    GPR_CODEGEN_ASSERT(!ctx_->sent_initial_metadata_);
+    GPR_ASSERT(!ctx_->sent_initial_metadata_);
 
     meta_ops_.set_output_tag(tag);
     meta_ops_.SendInitialMetadata(&ctx_->initial_metadata_,
@@ -1043,7 +1043,7 @@ class ServerAsyncReaderWriter final
     write_ops_.set_output_tag(tag);
     EnsureInitialMetadataSent(&write_ops_);
     // TODO(ctiller): don't assert
-    GPR_CODEGEN_ASSERT(write_ops_.SendMessage(msg).ok());
+    GPR_ASSERT(write_ops_.SendMessage(msg).ok());
     call_.PerformOps(&write_ops_);
   }
 
@@ -1053,7 +1053,7 @@ class ServerAsyncReaderWriter final
       options.set_buffer_hint();
     }
     EnsureInitialMetadataSent(&write_ops_);
-    GPR_CODEGEN_ASSERT(write_ops_.SendMessage(msg, options).ok());
+    GPR_ASSERT(write_ops_.SendMessage(msg, options).ok());
     call_.PerformOps(&write_ops_);
   }
 
@@ -1073,7 +1073,7 @@ class ServerAsyncReaderWriter final
     write_ops_.set_output_tag(tag);
     EnsureInitialMetadataSent(&write_ops_);
     options.set_buffer_hint();
-    GPR_CODEGEN_ASSERT(write_ops_.SendMessage(msg, options).ok());
+    GPR_ASSERT(write_ops_.SendMessage(msg, options).ok());
     write_ops_.ServerSendStatus(&ctx_->trailing_metadata_, status);
     call_.PerformOps(&write_ops_);
   }
diff --git a/contrib/libs/grpc/include/grpcpp/support/async_unary_call.h b/contrib/libs/grpc/include/grpcpp/support/async_unary_call.h
index a9886031f4..a831d73f72 100644
--- a/contrib/libs/grpc/include/grpcpp/support/async_unary_call.h
+++ b/contrib/libs/grpc/include/grpcpp/support/async_unary_call.h
@@ -1,31 +1,31 @@
-/*
- *
- * Copyright 2015 gRPC authors.
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
- */
+//
+//
+// Copyright 2015 gRPC authors.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+//
 
 #ifndef GRPCPP_SUPPORT_ASYNC_UNARY_CALL_H
 #define GRPCPP_SUPPORT_ASYNC_UNARY_CALL_H
 
 #include <grpc/grpc.h>
+#include <grpc/support/log.h>
 #include <grpcpp/client_context.h>
 #include <grpcpp/impl/call.h>
+#include <grpcpp/impl/call_op_set.h>
 #include <grpcpp/impl/call_op_set_interface.h>
-#include <grpcpp/impl/codegen/call_op_set.h>
-#include <grpcpp/impl/codegen/channel_interface.h>
-#include <grpcpp/impl/codegen/core_codegen_interface.h>
+#include <grpcpp/impl/channel_interface.h>
 #include <grpcpp/impl/service_type.h>
 #include <grpcpp/server_context.h>
 #include <grpcpp/support/status.h>
@@ -79,7 +79,7 @@ class ClientAsyncResponseReaderHelper {
  public:
   /// Start a call and write the request out if \a start is set.
   /// \a tag will be notified on \a cq when the call has been started (i.e.
-  /// intitial metadata sent) and \a request has been written out.
+  /// initial metadata sent) and \a request has been written out.
   /// If \a start is not set, the actual call must be initiated by StartCall
   /// Note that \a context will be used to fill in custom initial metadata
   /// used to send to the server when starting the call.
@@ -95,10 +95,9 @@ class ClientAsyncResponseReaderHelper {
       const grpc::internal::RpcMethod& method, grpc::ClientContext* context,
       const W& request) /* __attribute__((noinline)) */ {
     grpc::internal::Call call = channel->CreateCall(method, context, cq);
-    ClientAsyncResponseReader<R>* result =
-        new (grpc::g_core_codegen_interface->grpc_call_arena_alloc(
-            call.call(), sizeof(ClientAsyncResponseReader<R>)))
-            ClientAsyncResponseReader<R>(call, context);
+    ClientAsyncResponseReader<R>* result = new (grpc_call_arena_alloc(
+        call.call(), sizeof(ClientAsyncResponseReader<R>)))
+        ClientAsyncResponseReader<R>(call, context);
     SetupRequest<BaseR, BaseW>(
         call.call(), &result->single_buf_, &result->read_initial_metadata_,
         &result->finish_, static_cast<const BaseW&>(request));
@@ -128,11 +127,10 @@ class ClientAsyncResponseReaderHelper {
                                   grpc::internal::CallOpRecvMessage<R>,
                                   grpc::internal::CallOpClientRecvStatus>;
     SingleBufType* single_buf =
-        new (grpc::g_core_codegen_interface->grpc_call_arena_alloc(
-            call, sizeof(SingleBufType))) SingleBufType;
+        new (grpc_call_arena_alloc(call, sizeof(SingleBufType))) SingleBufType;
     *single_buf_ptr = single_buf;
     // TODO(ctiller): don't assert
-    GPR_CODEGEN_ASSERT(single_buf->SendMessage(request).ok());
+    GPR_ASSERT(single_buf->SendMessage(request).ok());
     single_buf->ClientSendClose();
 
     // The purpose of the following functions is to type-erase the actual
@@ -154,7 +152,7 @@ class ClientAsyncResponseReaderHelper {
     // will be static-cast'ed back to the class specified here by hiding that
     // class information inside the function definition. Note that this feature
     // expects the class being specified here for R to be a base-class of the
-    // "real" R without any multiple-inheritance (as applies in protbuf wrt
+    // "real" R without any multiple-inheritance (as applies in protobuf wrt
     // MessageLite)
     *finish = [](ClientContext* context, internal::Call* call,
                  bool initial_metadata_read,
@@ -166,8 +164,8 @@ class ClientAsyncResponseReaderHelper {
             grpc::internal::CallOpSet<grpc::internal::CallOpRecvMessage<R>,
                                       grpc::internal::CallOpClientRecvStatus>;
         FinishBufType* finish_buf =
-            new (grpc::g_core_codegen_interface->grpc_call_arena_alloc(
-                call->call(), sizeof(FinishBufType))) FinishBufType;
+            new (grpc_call_arena_alloc(call->call(), sizeof(FinishBufType)))
+                FinishBufType;
         *finish_buf_ptr = finish_buf;
         finish_buf->set_output_tag(tag);
         finish_buf->RecvMessage(static_cast<R*>(msg));
@@ -222,7 +220,7 @@ class ClientAsyncResponseReader final
  public:
   // always allocated against a call arena, no memory free required
   static void operator delete(void* /*ptr*/, std::size_t size) {
-    GPR_CODEGEN_ASSERT(size == sizeof(ClientAsyncResponseReader));
+    GPR_ASSERT(size == sizeof(ClientAsyncResponseReader));
   }
 
   // This operator should never be called as the memory should be freed as part
@@ -230,10 +228,10 @@ class ClientAsyncResponseReader final
   // delete to the operator new so that some compilers will not complain (see
   // https://github.com/grpc/grpc/issues/11301) Note at the time of adding this
   // there are no tests catching the compiler warning.
-  static void operator delete(void*, void*) { GPR_CODEGEN_ASSERT(false); }
+  static void operator delete(void*, void*) { GPR_ASSERT(false); }
 
   void StartCall() override {
-    GPR_CODEGEN_DEBUG_ASSERT(!started_);
+    GPR_DEBUG_ASSERT(!started_);
     started_ = true;
     internal::ClientAsyncResponseReaderHelper::StartCall(context_, single_buf_);
   }
@@ -245,8 +243,8 @@ class ClientAsyncResponseReader final
   ///   - the \a ClientContext associated with this call is updated with
   ///     possible initial and trailing metadata sent from the server.
   void ReadInitialMetadata(void* tag) override {
-    GPR_CODEGEN_DEBUG_ASSERT(started_);
-    GPR_CODEGEN_DEBUG_ASSERT(!context_->initial_metadata_received_);
+    GPR_DEBUG_ASSERT(started_);
+    GPR_DEBUG_ASSERT(!context_->initial_metadata_received_);
     read_initial_metadata_(context_, &call_, single_buf_, tag);
     initial_metadata_read_ = true;
   }
@@ -257,7 +255,7 @@ class ClientAsyncResponseReader final
   ///   - the \a ClientContext associated with this call is updated with
   ///     possible initial and trailing metadata sent from the server.
   void Finish(R* msg, grpc::Status* status, void* tag) override {
-    GPR_CODEGEN_DEBUG_ASSERT(started_);
+    GPR_DEBUG_ASSERT(started_);
     finish_(context_, &call_, initial_metadata_read_, single_buf_, &finish_buf_,
             static_cast<void*>(msg), status, tag);
   }
@@ -306,7 +304,7 @@ class ServerAsyncResponseWriter final
   ///
   /// \param[in] tag Tag identifying this request.
   void SendInitialMetadata(void* tag) override {
-    GPR_CODEGEN_ASSERT(!ctx_->sent_initial_metadata_);
+    GPR_ASSERT(!ctx_->sent_initial_metadata_);
 
     meta_buf_.set_output_tag(tag);
     meta_buf_.SendInitialMetadata(&ctx_->initial_metadata_,
@@ -375,7 +373,7 @@ class ServerAsyncResponseWriter final
   /// deallocate them once the Finish operation is complete (i.e. a result
   /// arrives in the completion queue).
   void FinishWithError(const grpc::Status& status, void* tag) {
-    GPR_CODEGEN_ASSERT(!status.ok());
+    GPR_ASSERT(!status.ok());
     finish_buf_.set_output_tag(tag);
     if (!ctx_->sent_initial_metadata_) {
       finish_buf_.SendInitialMetadata(&ctx_->initial_metadata_,
diff --git a/contrib/libs/grpc/include/grpcpp/support/byte_buffer.h b/contrib/libs/grpc/include/grpcpp/support/byte_buffer.h
index 7ca7c4b258..5bbfb66496 100644
--- a/contrib/libs/grpc/include/grpcpp/support/byte_buffer.h
+++ b/contrib/libs/grpc/include/grpcpp/support/byte_buffer.h
@@ -1,20 +1,20 @@
-/*
- *
- * Copyright 2015 gRPC authors.
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
- */
+//
+//
+// Copyright 2015 gRPC authors.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+//
 
 #ifndef GRPCPP_SUPPORT_BYTE_BUFFER_H
 #define GRPCPP_SUPPORT_BYTE_BUFFER_H
@@ -24,7 +24,6 @@
 #include <grpc/byte_buffer.h>
 #include <grpc/grpc.h>
 #include <grpc/support/log.h>
-#include <grpcpp/impl/codegen/core_codegen_interface.h>
 #include <grpcpp/impl/serialization_traits.h>
 #include <grpcpp/support/config.h>
 #include <grpcpp/support/slice.h>
@@ -85,11 +84,11 @@ class ByteBuffer final {
     // than its advertised side effect of increasing the reference count of the
     // slices it processes, and such an increase does not affect the semantics
     // seen by the caller of this constructor.
-    buffer_ = g_core_codegen_interface->grpc_raw_byte_buffer_create(
+    buffer_ = grpc_raw_byte_buffer_create(
         reinterpret_cast<grpc_slice*>(const_cast<Slice*>(slices)), nslices);
   }
 
-  /// Constuct a byte buffer by referencing elements of existing buffer
+  /// Construct a byte buffer by referencing elements of existing buffer
   /// \a buf. Wrapper of core function grpc_byte_buffer_copy . This is not
   /// a deep copy; it is just a referencing. As a result, its performance is
   /// size-independent.
@@ -97,7 +96,7 @@ class ByteBuffer final {
 
   ~ByteBuffer() {
     if (buffer_) {
-      g_core_codegen_interface->grpc_byte_buffer_destroy(buffer_);
+      grpc_byte_buffer_destroy(buffer_);
     }
   }
 
@@ -110,7 +109,7 @@ class ByteBuffer final {
     }
     if (buf.buffer_) {
       // then copy
-      buffer_ = g_core_codegen_interface->grpc_byte_buffer_copy(buf.buffer_);
+      buffer_ = grpc_byte_buffer_copy(buf.buffer_);
     }
     return *this;
   }
@@ -128,7 +127,7 @@ class ByteBuffer final {
   /// Remove all data.
   void Clear() {
     if (buffer_) {
-      g_core_codegen_interface->grpc_byte_buffer_destroy(buffer_);
+      grpc_byte_buffer_destroy(buffer_);
       buffer_ = nullptr;
     }
   }
@@ -138,9 +137,7 @@ class ByteBuffer final {
   /// bbuf.Duplicate(); is equivalent to bbuf=bbuf; but is actually readable.
   /// This is not a deep copy; it is a referencing and its performance
   /// is size-independent.
-  void Duplicate() {
-    buffer_ = g_core_codegen_interface->grpc_byte_buffer_copy(buffer_);
-  }
+  void Duplicate() { buffer_ = grpc_byte_buffer_copy(buffer_); }
 
   /// Forget underlying byte buffer without destroying
   /// Use this only for un-owned byte buffers
@@ -148,9 +145,7 @@ class ByteBuffer final {
 
   /// Buffer size in bytes.
   size_t Length() const {
-    return buffer_ == nullptr
-               ? 0
-               : g_core_codegen_interface->grpc_byte_buffer_length(buffer_);
+    return buffer_ == nullptr ? 0 : grpc_byte_buffer_length(buffer_);
   }
 
   /// Swap the state of *this and *other.
@@ -203,14 +198,14 @@ class ByteBuffer final {
 
   class ByteBufferPointer {
    public:
-    /* NOLINTNEXTLINE(google-explicit-constructor) */
+    // NOLINTNEXTLINE(google-explicit-constructor)
     ByteBufferPointer(const ByteBuffer* b)
         : bbuf_(const_cast<ByteBuffer*>(b)) {}
-    /* NOLINTNEXTLINE(google-explicit-constructor) */
+    // NOLINTNEXTLINE(google-explicit-constructor)
     operator ByteBuffer*() { return bbuf_; }
-    /* NOLINTNEXTLINE(google-explicit-constructor) */
+    // NOLINTNEXTLINE(google-explicit-constructor)
     operator grpc_byte_buffer*() { return bbuf_->buffer_; }
-    /* NOLINTNEXTLINE(google-explicit-constructor) */
+    // NOLINTNEXTLINE(google-explicit-constructor)
     operator grpc_byte_buffer**() { return &bbuf_->buffer_; }
 
    private:
@@ -230,7 +225,7 @@ class SerializationTraits<ByteBuffer, void> {
                           bool* own_buffer) {
     *buffer = source;
     *own_buffer = true;
-    return g_core_codegen_interface->ok();
+    return grpc::Status::OK;
   }
 };
 
diff --git a/contrib/libs/grpc/include/grpcpp/impl/codegen/callback_common.h b/contrib/libs/grpc/include/grpcpp/support/callback_common.h
index 9280289d5e..a99a47dbf4 100644
--- a/contrib/libs/grpc/include/grpcpp/impl/codegen/callback_common.h
+++ b/contrib/libs/grpc/include/grpcpp/support/callback_common.h
@@ -1,39 +1,34 @@
-/*
- *
- * Copyright 2018 gRPC authors.
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
- */
-
-#if defined(__GNUC__)
-#pragma GCC system_header
-#endif
-
-#ifndef GRPCPP_IMPL_CODEGEN_CALLBACK_COMMON_H
-#define GRPCPP_IMPL_CODEGEN_CALLBACK_COMMON_H
-
-// IWYU pragma: private
+//
+//
+// Copyright 2018 gRPC authors.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+//
+
+#ifndef GRPCPP_SUPPORT_CALLBACK_COMMON_H
+#define GRPCPP_SUPPORT_CALLBACK_COMMON_H
 
 #include <functional>
 
-#include <grpc/impl/codegen/grpc_types.h>
+#include <grpc/grpc.h>
+#include <grpc/impl/grpc_types.h>
+#include <grpc/support/log.h>
 #include <grpcpp/impl/call.h>
 #include <grpcpp/impl/codegen/channel_interface.h>
-#include <grpcpp/impl/codegen/completion_queue_tag.h>
-#include <grpcpp/impl/codegen/config.h>
-#include <grpcpp/impl/codegen/core_codegen_interface.h>
-#include <grpcpp/impl/codegen/status.h>
+#include <grpcpp/impl/completion_queue_tag.h>
+#include <grpcpp/support/config.h>
+#include <grpcpp/support/status.h>
 
 namespace grpc {
 namespace internal {
@@ -76,7 +71,7 @@ class CallbackWithStatusTag : public grpc_completion_queue_functor {
  public:
   // always allocated against a call arena, no memory free required
   static void operator delete(void* /*ptr*/, std::size_t size) {
-    GPR_CODEGEN_ASSERT(size == sizeof(CallbackWithStatusTag));
+    GPR_ASSERT(size == sizeof(CallbackWithStatusTag));
   }
 
   // This operator should never be called as the memory should be freed as part
@@ -84,12 +79,12 @@ class CallbackWithStatusTag : public grpc_completion_queue_functor {
   // delete to the operator new so that some compilers will not complain (see
   // https://github.com/grpc/grpc/issues/11301) Note at the time of adding this
   // there are no tests catching the compiler warning.
-  static void operator delete(void*, void*) { GPR_CODEGEN_ASSERT(false); }
+  static void operator delete(void*, void*) { GPR_ASSERT(false); }
 
   CallbackWithStatusTag(grpc_call* call, std::function<void(Status)> f,
                         CompletionQueueTag* ops)
       : call_(call), func_(std::move(f)), ops_(ops) {
-    g_core_codegen_interface->grpc_call_ref(call);
+    grpc_call_ref(call);
     functor_run = &CallbackWithStatusTag::StaticRun;
     // A client-side callback should never be run inline since they will always
     // have work to do from the user application. So, set the parent's
@@ -123,7 +118,7 @@ class CallbackWithStatusTag : public grpc_completion_queue_functor {
       // The tag was swallowed
       return;
     }
-    GPR_CODEGEN_ASSERT(ignored == ops_);
+    GPR_ASSERT(ignored == ops_);
 
     // Last use of func_ or status_, so ok to move them out
     auto func = std::move(func_);
@@ -131,7 +126,7 @@ class CallbackWithStatusTag : public grpc_completion_queue_functor {
     func_ = nullptr;     // reset to clear this out for sure
     status_ = Status();  // reset to clear this out for sure
     CatchingCallback(std::move(func), std::move(status));
-    g_core_codegen_interface->grpc_call_unref(call_);
+    grpc_call_unref(call_);
   }
 };
 
@@ -142,7 +137,7 @@ class CallbackWithSuccessTag : public grpc_completion_queue_functor {
  public:
   // always allocated against a call arena, no memory free required
   static void operator delete(void* /*ptr*/, std::size_t size) {
-    GPR_CODEGEN_ASSERT(size == sizeof(CallbackWithSuccessTag));
+    GPR_ASSERT(size == sizeof(CallbackWithSuccessTag));
   }
 
   // This operator should never be called as the memory should be freed as part
@@ -150,7 +145,7 @@ class CallbackWithSuccessTag : public grpc_completion_queue_functor {
   // delete to the operator new so that some compilers will not complain (see
   // https://github.com/grpc/grpc/issues/11301) Note at the time of adding this
   // there are no tests catching the compiler warning.
-  static void operator delete(void*, void*) { GPR_CODEGEN_ASSERT(false); }
+  static void operator delete(void*, void*) { GPR_ASSERT(false); }
 
   CallbackWithSuccessTag() : call_(nullptr) {}
 
@@ -167,8 +162,8 @@ class CallbackWithSuccessTag : public grpc_completion_queue_functor {
   // callbacks.
   void Set(grpc_call* call, std::function<void(bool)> f,
            CompletionQueueTag* ops, bool can_inline) {
-    GPR_CODEGEN_ASSERT(call_ == nullptr);
-    g_core_codegen_interface->grpc_call_ref(call);
+    GPR_ASSERT(call_ == nullptr);
+    grpc_call_ref(call);
     call_ = call;
     func_ = std::move(f);
     ops_ = ops;
@@ -181,7 +176,7 @@ class CallbackWithSuccessTag : public grpc_completion_queue_functor {
       grpc_call* call = call_;
       call_ = nullptr;
       func_ = nullptr;
-      g_core_codegen_interface->grpc_call_unref(call);
+      grpc_call_unref(call);
     }
   }
 
@@ -193,7 +188,7 @@ class CallbackWithSuccessTag : public grpc_completion_queue_functor {
   void force_run(bool ok) { Run(ok); }
 
   /// check if this tag is currently set
-  /* NOLINTNEXTLINE(google-explicit-constructor) */
+  // NOLINTNEXTLINE(google-explicit-constructor)
   operator bool() const { return call_ != nullptr; }
 
  private:
@@ -212,7 +207,7 @@ class CallbackWithSuccessTag : public grpc_completion_queue_functor {
     auto* ops = ops_;
 #endif
     bool do_callback = ops_->FinalizeResult(&ignored, &ok);
-    GPR_CODEGEN_DEBUG_ASSERT(ignored == ops);
+    GPR_DEBUG_ASSERT(ignored == ops);
 
     if (do_callback) {
       CatchingCallback(func_, ok);
@@ -223,4 +218,4 @@ class CallbackWithSuccessTag : public grpc_completion_queue_functor {
 }  // namespace internal
 }  // namespace grpc
 
-#endif  // GRPCPP_IMPL_CODEGEN_CALLBACK_COMMON_H
+#endif  // GRPCPP_SUPPORT_CALLBACK_COMMON_H
diff --git a/contrib/libs/grpc/include/grpcpp/support/channel_arguments.h b/contrib/libs/grpc/include/grpcpp/support/channel_arguments.h
index a09180de45..a3845467f1 100644
--- a/contrib/libs/grpc/include/grpcpp/support/channel_arguments.h
+++ b/contrib/libs/grpc/include/grpcpp/support/channel_arguments.h
@@ -1,20 +1,20 @@
-/*
- *
- * Copyright 2015 gRPC authors.
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
- */
+//
+//
+// Copyright 2015 gRPC authors.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+//
 
 #ifndef GRPCPP_SUPPORT_CHANNEL_ARGUMENTS_H
 #define GRPCPP_SUPPORT_CHANNEL_ARGUMENTS_H
diff --git a/contrib/libs/grpc/include/grpcpp/support/client_callback.h b/contrib/libs/grpc/include/grpcpp/support/client_callback.h
index c15bca0dbe..f096de3440 100644
--- a/contrib/libs/grpc/include/grpcpp/support/client_callback.h
+++ b/contrib/libs/grpc/include/grpcpp/support/client_callback.h
@@ -1,24 +1,1227 @@
-/*
- *
- * Copyright 2018 gRPC authors.
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
- */
+//
+//
+// Copyright 2018 gRPC authors.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+//
 
 #ifndef GRPCPP_SUPPORT_CLIENT_CALLBACK_H
 #define GRPCPP_SUPPORT_CLIENT_CALLBACK_H
 
-#include <grpcpp/impl/codegen/client_callback.h>  // IWYU pragma: export
+#include <atomic>
+#include <functional>
+
+#include <grpc/grpc.h>
+#include <grpc/support/log.h>
+#include <grpcpp/impl/call.h>
+#include <grpcpp/impl/call_op_set.h>
+#include <grpcpp/impl/sync.h>
+#include <grpcpp/support/callback_common.h>
+#include <grpcpp/support/config.h>
+#include <grpcpp/support/status.h>
+
+namespace grpc {
+class Channel;
+class ClientContext;
+
+namespace internal {
+class RpcMethod;
+
+/// Perform a callback-based unary call.  May optionally specify the base
+/// class of the Request and Response so that the internal calls and structures
+/// below this may be based on those base classes and thus achieve code reuse
+/// across different RPCs (e.g., for protobuf, MessageLite would be a base
+/// class).
+/// TODO(vjpai): Combine as much as possible with the blocking unary call code
+template <class InputMessage, class OutputMessage,
+          class BaseInputMessage = InputMessage,
+          class BaseOutputMessage = OutputMessage>
+void CallbackUnaryCall(grpc::ChannelInterface* channel,
+                       const grpc::internal::RpcMethod& method,
+                       grpc::ClientContext* context,
+                       const InputMessage* request, OutputMessage* result,
+                       std::function<void(grpc::Status)> on_completion) {
+  static_assert(std::is_base_of<BaseInputMessage, InputMessage>::value,
+                "Invalid input message specification");
+  static_assert(std::is_base_of<BaseOutputMessage, OutputMessage>::value,
+                "Invalid output message specification");
+  CallbackUnaryCallImpl<BaseInputMessage, BaseOutputMessage> x(
+      channel, method, context, request, result, on_completion);
+}
+
+template <class InputMessage, class OutputMessage>
+class CallbackUnaryCallImpl {
+ public:
+  CallbackUnaryCallImpl(grpc::ChannelInterface* channel,
+                        const grpc::internal::RpcMethod& method,
+                        grpc::ClientContext* context,
+                        const InputMessage* request, OutputMessage* result,
+                        std::function<void(grpc::Status)> on_completion) {
+    grpc::CompletionQueue* cq = channel->CallbackCQ();
+    GPR_ASSERT(cq != nullptr);
+    grpc::internal::Call call(channel->CreateCall(method, context, cq));
+
+    using FullCallOpSet = grpc::internal::CallOpSet<
+        grpc::internal::CallOpSendInitialMetadata,
+        grpc::internal::CallOpSendMessage,
+        grpc::internal::CallOpRecvInitialMetadata,
+        grpc::internal::CallOpRecvMessage<OutputMessage>,
+        grpc::internal::CallOpClientSendClose,
+        grpc::internal::CallOpClientRecvStatus>;
+
+    struct OpSetAndTag {
+      FullCallOpSet opset;
+      grpc::internal::CallbackWithStatusTag tag;
+    };
+    const size_t alloc_sz = sizeof(OpSetAndTag);
+    auto* const alloced =
+        static_cast<OpSetAndTag*>(grpc_call_arena_alloc(call.call(), alloc_sz));
+    auto* ops = new (&alloced->opset) FullCallOpSet;
+    auto* tag = new (&alloced->tag)
+        grpc::internal::CallbackWithStatusTag(call.call(), on_completion, ops);
+
+    // TODO(vjpai): Unify code with sync API as much as possible
+    grpc::Status s = ops->SendMessagePtr(request);
+    if (!s.ok()) {
+      tag->force_run(s);
+      return;
+    }
+    ops->SendInitialMetadata(&context->send_initial_metadata_,
+                             context->initial_metadata_flags());
+    ops->RecvInitialMetadata(context);
+    ops->RecvMessage(result);
+    ops->AllowNoMessage();
+    ops->ClientSendClose();
+    ops->ClientRecvStatus(context, tag->status_ptr());
+    ops->set_core_cq_tag(tag);
+    call.PerformOps(ops);
+  }
+};
+
+// Base class for public API classes.
+class ClientReactor {
+ public:
+  virtual ~ClientReactor() = default;
+
+  /// Called by the library when all operations associated with this RPC have
+  /// completed and all Holds have been removed. OnDone provides the RPC status
+  /// outcome for both successful and failed RPCs. If it is never called on an
+  /// RPC, it indicates an application-level problem (like failure to remove a
+  /// hold).
+  ///
+  /// \param[in] s The status outcome of this RPC
+  virtual void OnDone(const grpc::Status& /*s*/) = 0;
+
+  /// InternalScheduleOnDone is not part of the API and is not meant to be
+  /// overridden. It is virtual to allow successful builds for certain bazel
+  /// build users that only want to depend on gRPC codegen headers and not the
+  /// full library (although this is not a generally-supported option). Although
+  /// the virtual call is slower than a direct call, this function is
+  /// heavyweight and the cost of the virtual call is not much in comparison.
+  /// This function may be removed or devirtualized in the future.
+  virtual void InternalScheduleOnDone(grpc::Status s);
+
+  /// InternalTrailersOnly is not part of the API and is not meant to be
+  /// overridden. It is virtual to allow successful builds for certain bazel
+  /// build users that only want to depend on gRPC codegen headers and not the
+  /// full library (although this is not a generally-supported option). Although
+  /// the virtual call is slower than a direct call, this function is
+  /// heavyweight and the cost of the virtual call is not much in comparison.
+  /// This function may be removed or devirtualized in the future.
+  virtual bool InternalTrailersOnly(const grpc_call* call) const;
+};
+
+}  // namespace internal
+
+// Forward declarations
+template <class Request, class Response>
+class ClientBidiReactor;
+template <class Response>
+class ClientReadReactor;
+template <class Request>
+class ClientWriteReactor;
+class ClientUnaryReactor;
+
+// NOTE: The streaming objects are not actually implemented in the public API.
+//       These interfaces are provided for mocking only. Typical applications
+//       will interact exclusively with the reactors that they define.
+template <class Request, class Response>
+class ClientCallbackReaderWriter {
+ public:
+  virtual ~ClientCallbackReaderWriter() {}
+  virtual void StartCall() = 0;
+  virtual void Write(const Request* req, grpc::WriteOptions options) = 0;
+  virtual void WritesDone() = 0;
+  virtual void Read(Response* resp) = 0;
+  virtual void AddHold(int holds) = 0;
+  virtual void RemoveHold() = 0;
+
+ protected:
+  void BindReactor(ClientBidiReactor<Request, Response>* reactor) {
+    reactor->BindStream(this);
+  }
+};
+
+template <class Response>
+class ClientCallbackReader {
+ public:
+  virtual ~ClientCallbackReader() {}
+  virtual void StartCall() = 0;
+  virtual void Read(Response* resp) = 0;
+  virtual void AddHold(int holds) = 0;
+  virtual void RemoveHold() = 0;
+
+ protected:
+  void BindReactor(ClientReadReactor<Response>* reactor) {
+    reactor->BindReader(this);
+  }
+};
+
+template <class Request>
+class ClientCallbackWriter {
+ public:
+  virtual ~ClientCallbackWriter() {}
+  virtual void StartCall() = 0;
+  void Write(const Request* req) { Write(req, grpc::WriteOptions()); }
+  virtual void Write(const Request* req, grpc::WriteOptions options) = 0;
+  void WriteLast(const Request* req, grpc::WriteOptions options) {
+    Write(req, options.set_last_message());
+  }
+  virtual void WritesDone() = 0;
+
+  virtual void AddHold(int holds) = 0;
+  virtual void RemoveHold() = 0;
+
+ protected:
+  void BindReactor(ClientWriteReactor<Request>* reactor) {
+    reactor->BindWriter(this);
+  }
+};
+
+class ClientCallbackUnary {
+ public:
+  virtual ~ClientCallbackUnary() {}
+  virtual void StartCall() = 0;
+
+ protected:
+  void BindReactor(ClientUnaryReactor* reactor);
+};
+
+// The following classes are the reactor interfaces that are to be implemented
+// by the user. They are passed in to the library as an argument to a call on a
+// stub (either a codegen-ed call or a generic call). The streaming RPC is
+// activated by calling StartCall, possibly after initiating StartRead,
+// StartWrite, or AddHold operations on the streaming object. Note that none of
+// the classes are pure; all reactions have a default empty reaction so that the
+// user class only needs to override those reactions that it cares about.
+// The reactor must be passed to the stub invocation before any of the below
+// operations can be called and its reactions will be invoked by the library in
+// response to the completion of various operations. Reactions must not include
+// blocking operations (such as blocking I/O, starting synchronous RPCs, or
+// waiting on condition variables). Reactions may be invoked concurrently,
+// except that OnDone is called after all others (assuming proper API usage).
+// The reactor may not be deleted until OnDone is called.
+
+/// \a ClientBidiReactor is the interface for a bidirectional streaming RPC.
+template <class Request, class Response>
+class ClientBidiReactor : public internal::ClientReactor {
+ public:
+  /// Activate the RPC and initiate any reads or writes that have been Start'ed
+  /// before this call. All streaming RPCs issued by the client MUST have
+  /// StartCall invoked on them (even if they are canceled) as this call is the
+  /// activation of their lifecycle.
+  void StartCall() { stream_->StartCall(); }
+
+  /// Initiate a read operation (or post it for later initiation if StartCall
+  /// has not yet been invoked).
+  ///
+  /// \param[out] resp Where to eventually store the read message. Valid when
+  ///                  the library calls OnReadDone
+  void StartRead(Response* resp) { stream_->Read(resp); }
+
+  /// Initiate a write operation (or post it for later initiation if StartCall
+  /// has not yet been invoked).
+  ///
+  /// \param[in] req The message to be written. The library does not take
+  ///                ownership but the caller must ensure that the message is
+  ///                not deleted or modified until OnWriteDone is called.
+  void StartWrite(const Request* req) { StartWrite(req, grpc::WriteOptions()); }
+
+  /// Initiate/post a write operation with specified options.
+  ///
+  /// \param[in] req The message to be written. The library does not take
+  ///                ownership but the caller must ensure that the message is
+  ///                not deleted or modified until OnWriteDone is called.
+  /// \param[in] options The WriteOptions to use for writing this message
+  void StartWrite(const Request* req, grpc::WriteOptions options) {
+    stream_->Write(req, options);
+  }
+
+  /// Initiate/post a write operation with specified options and an indication
+  /// that this is the last write (like StartWrite and StartWritesDone, merged).
+  /// Note that calling this means that no more calls to StartWrite,
+  /// StartWriteLast, or StartWritesDone are allowed.
+  ///
+  /// \param[in] req The message to be written. The library does not take
+  ///                ownership but the caller must ensure that the message is
+  ///                not deleted or modified until OnWriteDone is called.
+  /// \param[in] options The WriteOptions to use for writing this message
+  void StartWriteLast(const Request* req, grpc::WriteOptions options) {
+    StartWrite(req, options.set_last_message());
+  }
+
+  /// Indicate that the RPC will have no more write operations. This can only be
+  /// issued once for a given RPC. This is not required or allowed if
+  /// StartWriteLast is used since that already has the same implication.
+  /// Note that calling this means that no more calls to StartWrite,
+  /// StartWriteLast, or StartWritesDone are allowed.
+  void StartWritesDone() { stream_->WritesDone(); }
+
+  /// Holds are needed if (and only if) this stream has operations that take
+  /// place on it after StartCall but from outside one of the reactions
+  /// (OnReadDone, etc). This is _not_ a common use of the streaming API.
+  ///
+  /// Holds must be added before calling StartCall. If a stream still has a hold
+  /// in place, its resources will not be destroyed even if the status has
+  /// already come in from the wire and there are currently no active callbacks
+  /// outstanding. Similarly, the stream will not call OnDone if there are still
+  /// holds on it.
+  ///
+  /// For example, if a StartRead or StartWrite operation is going to be
+  /// initiated from elsewhere in the application, the application should call
+  /// AddHold or AddMultipleHolds before StartCall.  If there is going to be,
+  /// for example, a read-flow and a write-flow taking place outside the
+  /// reactions, then call AddMultipleHolds(2) before StartCall. When the
+  /// application knows that it won't issue any more read operations (such as
+  /// when a read comes back as not ok), it should issue a RemoveHold(). It
+  /// should also call RemoveHold() again after it does StartWriteLast or
+  /// StartWritesDone that indicates that there will be no more write ops.
+  /// The number of RemoveHold calls must match the total number of AddHold
+  /// calls plus the number of holds added by AddMultipleHolds.
+  /// The argument to AddMultipleHolds must be positive.
+  void AddHold() { AddMultipleHolds(1); }
+  void AddMultipleHolds(int holds) {
+    GPR_DEBUG_ASSERT(holds > 0);
+    stream_->AddHold(holds);
+  }
+  void RemoveHold() { stream_->RemoveHold(); }
+
+  /// Notifies the application that all operations associated with this RPC
+  /// have completed and all Holds have been removed. OnDone provides the RPC
+  /// status outcome for both successful and failed RPCs and will be called in
+  /// all cases. If it is not called, it indicates an application-level problem
+  /// (like failure to remove a hold).
+  ///
+  /// \param[in] s The status outcome of this RPC
+  void OnDone(const grpc::Status& /*s*/) override {}
+
+  /// Notifies the application that a read of initial metadata from the
+  /// server is done. If the application chooses not to implement this method,
+  /// it can assume that the initial metadata has been read before the first
+  /// call of OnReadDone or OnDone.
+  ///
+  /// \param[in] ok Was the initial metadata read successfully? If false, no
+  ///               new read/write operation will succeed, and any further
+  ///               Start* operations should not be called.
+  virtual void OnReadInitialMetadataDone(bool /*ok*/) {}
+
+  /// Notifies the application that a StartRead operation completed.
+  ///
+  /// \param[in] ok Was it successful? If false, no new read/write operation
+  ///               will succeed, and any further Start* should not be called.
+  virtual void OnReadDone(bool /*ok*/) {}
+
+  /// Notifies the application that a StartWrite or StartWriteLast operation
+  /// completed.
+  ///
+  /// \param[in] ok Was it successful? If false, no new read/write operation
+  ///               will succeed, and any further Start* should not be called.
+  virtual void OnWriteDone(bool /*ok*/) {}
+
+  /// Notifies the application that a StartWritesDone operation completed. Note
+  /// that this is only used on explicit StartWritesDone operations and not for
+  /// those that are implicitly invoked as part of a StartWriteLast.
+  ///
+  /// \param[in] ok Was it successful? If false, the application will later see
+  ///               the failure reflected as a bad status in OnDone and no
+  ///               further Start* should be called.
+  virtual void OnWritesDoneDone(bool /*ok*/) {}
+
+ private:
+  friend class ClientCallbackReaderWriter<Request, Response>;
+  void BindStream(ClientCallbackReaderWriter<Request, Response>* stream) {
+    stream_ = stream;
+  }
+  ClientCallbackReaderWriter<Request, Response>* stream_;
+};
+
+/// \a ClientReadReactor is the interface for a server-streaming RPC.
+/// All public methods behave as in ClientBidiReactor.
+template <class Response>
+class ClientReadReactor : public internal::ClientReactor {
+ public:
+  void StartCall() { reader_->StartCall(); }
+  void StartRead(Response* resp) { reader_->Read(resp); }
+
+  void AddHold() { AddMultipleHolds(1); }
+  void AddMultipleHolds(int holds) {
+    GPR_DEBUG_ASSERT(holds > 0);
+    reader_->AddHold(holds);
+  }
+  void RemoveHold() { reader_->RemoveHold(); }
+
+  void OnDone(const grpc::Status& /*s*/) override {}
+  virtual void OnReadInitialMetadataDone(bool /*ok*/) {}
+  virtual void OnReadDone(bool /*ok*/) {}
+
+ private:
+  friend class ClientCallbackReader<Response>;
+  void BindReader(ClientCallbackReader<Response>* reader) { reader_ = reader; }
+  ClientCallbackReader<Response>* reader_;
+};
+
+/// \a ClientWriteReactor is the interface for a client-streaming RPC.
+/// All public methods behave as in ClientBidiReactor.
+template <class Request>
+class ClientWriteReactor : public internal::ClientReactor {
+ public:
+  void StartCall() { writer_->StartCall(); }
+  void StartWrite(const Request* req) { StartWrite(req, grpc::WriteOptions()); }
+  void StartWrite(const Request* req, grpc::WriteOptions options) {
+    writer_->Write(req, options);
+  }
+  void StartWriteLast(const Request* req, grpc::WriteOptions options) {
+    StartWrite(req, options.set_last_message());
+  }
+  void StartWritesDone() { writer_->WritesDone(); }
+
+  void AddHold() { AddMultipleHolds(1); }
+  void AddMultipleHolds(int holds) {
+    GPR_DEBUG_ASSERT(holds > 0);
+    writer_->AddHold(holds);
+  }
+  void RemoveHold() { writer_->RemoveHold(); }
+
+  void OnDone(const grpc::Status& /*s*/) override {}
+  virtual void OnReadInitialMetadataDone(bool /*ok*/) {}
+  virtual void OnWriteDone(bool /*ok*/) {}
+  virtual void OnWritesDoneDone(bool /*ok*/) {}
+
+ private:
+  friend class ClientCallbackWriter<Request>;
+  void BindWriter(ClientCallbackWriter<Request>* writer) { writer_ = writer; }
+
+  ClientCallbackWriter<Request>* writer_;
+};
+
+/// \a ClientUnaryReactor is a reactor-style interface for a unary RPC.
+/// This is _not_ a common way of invoking a unary RPC. In practice, this
+/// option should be used only if the unary RPC wants to receive initial
+/// metadata without waiting for the response to complete. Most deployments of
+/// RPC systems do not use this option, but it is needed for generality.
+/// All public methods behave as in ClientBidiReactor.
+/// StartCall is included for consistency with the other reactor flavors: even
+/// though there are no StartRead or StartWrite operations to queue before the
+/// call (that is part of the unary call itself) and there is no reactor object
+/// being created as a result of this call, we keep a consistent 2-phase
+/// initiation API among all the reactor flavors.
+class ClientUnaryReactor : public internal::ClientReactor {
+ public:
+  void StartCall() { call_->StartCall(); }
+  void OnDone(const grpc::Status& /*s*/) override {}
+  virtual void OnReadInitialMetadataDone(bool /*ok*/) {}
+
+ private:
+  friend class ClientCallbackUnary;
+  void BindCall(ClientCallbackUnary* call) { call_ = call; }
+  ClientCallbackUnary* call_;
+};
+
+// Define function out-of-line from class to avoid forward declaration issue
+inline void ClientCallbackUnary::BindReactor(ClientUnaryReactor* reactor) {
+  reactor->BindCall(this);
+}
+
+namespace internal {
+
+// Forward declare factory classes for friendship
+template <class Request, class Response>
+class ClientCallbackReaderWriterFactory;
+template <class Response>
+class ClientCallbackReaderFactory;
+template <class Request>
+class ClientCallbackWriterFactory;
+
+template <class Request, class Response>
+class ClientCallbackReaderWriterImpl
+    : public ClientCallbackReaderWriter<Request, Response> {
+ public:
+  // always allocated against a call arena, no memory free required
+  static void operator delete(void* /*ptr*/, std::size_t size) {
+    GPR_ASSERT(size == sizeof(ClientCallbackReaderWriterImpl));
+  }
+
+  // This operator should never be called as the memory should be freed as part
+  // of the arena destruction. It only exists to provide a matching operator
+  // delete to the operator new so that some compilers will not complain (see
+  // https://github.com/grpc/grpc/issues/11301) Note at the time of adding this
+  // there are no tests catching the compiler warning.
+  static void operator delete(void*, void*) { GPR_ASSERT(false); }
+
+  void StartCall() Y_ABSL_LOCKS_EXCLUDED(start_mu_) override {
+    // This call initiates two batches, plus any backlog, each with a callback
+    // 1. Send initial metadata (unless corked) + recv initial metadata
+    // 2. Any read backlog
+    // 3. Any write backlog
+    // 4. Recv trailing metadata (unless corked)
+    if (!start_corked_) {
+      start_ops_.SendInitialMetadata(&context_->send_initial_metadata_,
+                                     context_->initial_metadata_flags());
+    }
+
+    call_.PerformOps(&start_ops_);
+
+    {
+      grpc::internal::MutexLock lock(&start_mu_);
+
+      if (backlog_.read_ops) {
+        call_.PerformOps(&read_ops_);
+      }
+      if (backlog_.write_ops) {
+        call_.PerformOps(&write_ops_);
+      }
+      if (backlog_.writes_done_ops) {
+        call_.PerformOps(&writes_done_ops_);
+      }
+      call_.PerformOps(&finish_ops_);
+      // The last thing in this critical section is to set started_ so that it
+      // can be used lock-free as well.
+      started_.store(true, std::memory_order_release);
+    }
+    // MaybeFinish outside the lock to make sure that destruction of this object
+    // doesn't take place while holding the lock (which would cause the lock to
+    // be released after destruction)
+    this->MaybeFinish(/*from_reaction=*/false);
+  }
+
+  void Read(Response* msg) override {
+    read_ops_.RecvMessage(msg);
+    callbacks_outstanding_.fetch_add(1, std::memory_order_relaxed);
+    if (GPR_UNLIKELY(!started_.load(std::memory_order_acquire))) {
+      grpc::internal::MutexLock lock(&start_mu_);
+      if (GPR_LIKELY(!started_.load(std::memory_order_relaxed))) {
+        backlog_.read_ops = true;
+        return;
+      }
+    }
+    call_.PerformOps(&read_ops_);
+  }
+
+  void Write(const Request* msg, grpc::WriteOptions options)
+      Y_ABSL_LOCKS_EXCLUDED(start_mu_) override {
+    if (options.is_last_message()) {
+      options.set_buffer_hint();
+      write_ops_.ClientSendClose();
+    }
+    // TODO(vjpai): don't assert
+    GPR_ASSERT(write_ops_.SendMessagePtr(msg, options).ok());
+    callbacks_outstanding_.fetch_add(1, std::memory_order_relaxed);
+    if (GPR_UNLIKELY(corked_write_needed_)) {
+      write_ops_.SendInitialMetadata(&context_->send_initial_metadata_,
+                                     context_->initial_metadata_flags());
+      corked_write_needed_ = false;
+    }
+
+    if (GPR_UNLIKELY(!started_.load(std::memory_order_acquire))) {
+      grpc::internal::MutexLock lock(&start_mu_);
+      if (GPR_LIKELY(!started_.load(std::memory_order_relaxed))) {
+        backlog_.write_ops = true;
+        return;
+      }
+    }
+    call_.PerformOps(&write_ops_);
+  }
+  void WritesDone() Y_ABSL_LOCKS_EXCLUDED(start_mu_) override {
+    writes_done_ops_.ClientSendClose();
+    writes_done_tag_.Set(
+        call_.call(),
+        [this](bool ok) {
+          reactor_->OnWritesDoneDone(ok);
+          MaybeFinish(/*from_reaction=*/true);
+        },
+        &writes_done_ops_, /*can_inline=*/false);
+    writes_done_ops_.set_core_cq_tag(&writes_done_tag_);
+    callbacks_outstanding_.fetch_add(1, std::memory_order_relaxed);
+    if (GPR_UNLIKELY(corked_write_needed_)) {
+      writes_done_ops_.SendInitialMetadata(&context_->send_initial_metadata_,
+                                           context_->initial_metadata_flags());
+      corked_write_needed_ = false;
+    }
+    if (GPR_UNLIKELY(!started_.load(std::memory_order_acquire))) {
+      grpc::internal::MutexLock lock(&start_mu_);
+      if (GPR_LIKELY(!started_.load(std::memory_order_relaxed))) {
+        backlog_.writes_done_ops = true;
+        return;
+      }
+    }
+    call_.PerformOps(&writes_done_ops_);
+  }
+
+  void AddHold(int holds) override {
+    callbacks_outstanding_.fetch_add(holds, std::memory_order_relaxed);
+  }
+  void RemoveHold() override { MaybeFinish(/*from_reaction=*/false); }
+
+ private:
+  friend class ClientCallbackReaderWriterFactory<Request, Response>;
+
+  ClientCallbackReaderWriterImpl(grpc::internal::Call call,
+                                 grpc::ClientContext* context,
+                                 ClientBidiReactor<Request, Response>* reactor)
+      : context_(context),
+        call_(call),
+        reactor_(reactor),
+        start_corked_(context_->initial_metadata_corked_),
+        corked_write_needed_(start_corked_) {
+    this->BindReactor(reactor);
+
+    // Set up the unchanging parts of the start, read, and write tags and ops.
+    start_tag_.Set(
+        call_.call(),
+        [this](bool ok) {
+          reactor_->OnReadInitialMetadataDone(
+              ok && !reactor_->InternalTrailersOnly(call_.call()));
+          MaybeFinish(/*from_reaction=*/true);
+        },
+        &start_ops_, /*can_inline=*/false);
+    start_ops_.RecvInitialMetadata(context_);
+    start_ops_.set_core_cq_tag(&start_tag_);
+
+    write_tag_.Set(
+        call_.call(),
+        [this](bool ok) {
+          reactor_->OnWriteDone(ok);
+          MaybeFinish(/*from_reaction=*/true);
+        },
+        &write_ops_, /*can_inline=*/false);
+    write_ops_.set_core_cq_tag(&write_tag_);
+
+    read_tag_.Set(
+        call_.call(),
+        [this](bool ok) {
+          reactor_->OnReadDone(ok);
+          MaybeFinish(/*from_reaction=*/true);
+        },
+        &read_ops_, /*can_inline=*/false);
+    read_ops_.set_core_cq_tag(&read_tag_);
+
+    // Also set up the Finish tag and op set.
+    finish_tag_.Set(
+        call_.call(),
+        [this](bool /*ok*/) { MaybeFinish(/*from_reaction=*/true); },
+        &finish_ops_,
+        /*can_inline=*/false);
+    finish_ops_.ClientRecvStatus(context_, &finish_status_);
+    finish_ops_.set_core_cq_tag(&finish_tag_);
+  }
+
+  // MaybeFinish can be called from reactions or from user-initiated operations
+  // like StartCall or RemoveHold. If this is the last operation or hold on this
+  // object, it will invoke the OnDone reaction. If MaybeFinish was called from
+  // a reaction, it can call OnDone directly. If not, it would need to schedule
+  // OnDone onto an executor thread to avoid the possibility of deadlocking with
+  // any locks in the user code that invoked it.
+  void MaybeFinish(bool from_reaction) {
+    if (GPR_UNLIKELY(callbacks_outstanding_.fetch_sub(
+                         1, std::memory_order_acq_rel) == 1)) {
+      grpc::Status s = std::move(finish_status_);
+      auto* reactor = reactor_;
+      auto* call = call_.call();
+      this->~ClientCallbackReaderWriterImpl();
+      grpc_call_unref(call);
+      if (GPR_LIKELY(from_reaction)) {
+        reactor->OnDone(s);
+      } else {
+        reactor->InternalScheduleOnDone(std::move(s));
+      }
+    }
+  }
+
+  grpc::ClientContext* const context_;
+  grpc::internal::Call call_;
+  ClientBidiReactor<Request, Response>* const reactor_;
+
+  grpc::internal::CallOpSet<grpc::internal::CallOpSendInitialMetadata,
+                            grpc::internal::CallOpRecvInitialMetadata>
+      start_ops_;
+  grpc::internal::CallbackWithSuccessTag start_tag_;
+  const bool start_corked_;
+  bool corked_write_needed_;  // no lock needed since only accessed in
+                              // Write/WritesDone which cannot be concurrent
+
+  grpc::internal::CallOpSet<grpc::internal::CallOpClientRecvStatus> finish_ops_;
+  grpc::internal::CallbackWithSuccessTag finish_tag_;
+  grpc::Status finish_status_;
+
+  grpc::internal::CallOpSet<grpc::internal::CallOpSendInitialMetadata,
+                            grpc::internal::CallOpSendMessage,
+                            grpc::internal::CallOpClientSendClose>
+      write_ops_;
+  grpc::internal::CallbackWithSuccessTag write_tag_;
+
+  grpc::internal::CallOpSet<grpc::internal::CallOpSendInitialMetadata,
+                            grpc::internal::CallOpClientSendClose>
+      writes_done_ops_;
+  grpc::internal::CallbackWithSuccessTag writes_done_tag_;
+
+  grpc::internal::CallOpSet<grpc::internal::CallOpRecvMessage<Response>>
+      read_ops_;
+  grpc::internal::CallbackWithSuccessTag read_tag_;
+
+  struct StartCallBacklog {
+    bool write_ops = false;
+    bool writes_done_ops = false;
+    bool read_ops = false;
+  };
+  StartCallBacklog backlog_ Y_ABSL_GUARDED_BY(start_mu_);
+
+  // Minimum of 3 callbacks to pre-register for start ops, StartCall, and finish
+  std::atomic<intptr_t> callbacks_outstanding_{3};
+  std::atomic_bool started_{false};
+  grpc::internal::Mutex start_mu_;
+};
+
+template <class Request, class Response>
+class ClientCallbackReaderWriterFactory {
+ public:
+  static void Create(grpc::ChannelInterface* channel,
+                     const grpc::internal::RpcMethod& method,
+                     grpc::ClientContext* context,
+                     ClientBidiReactor<Request, Response>* reactor) {
+    grpc::internal::Call call =
+        channel->CreateCall(method, context, channel->CallbackCQ());
+
+    grpc_call_ref(call.call());
+    new (grpc_call_arena_alloc(
+        call.call(), sizeof(ClientCallbackReaderWriterImpl<Request, Response>)))
+        ClientCallbackReaderWriterImpl<Request, Response>(call, context,
+                                                          reactor);
+  }
+};
+
+template <class Response>
+class ClientCallbackReaderImpl : public ClientCallbackReader<Response> {
+ public:
+  // always allocated against a call arena, no memory free required
+  static void operator delete(void* /*ptr*/, std::size_t size) {
+    GPR_ASSERT(size == sizeof(ClientCallbackReaderImpl));
+  }
+
+  // This operator should never be called as the memory should be freed as part
+  // of the arena destruction. It only exists to provide a matching operator
+  // delete to the operator new so that some compilers will not complain (see
+  // https://github.com/grpc/grpc/issues/11301) Note at the time of adding this
+  // there are no tests catching the compiler warning.
+  static void operator delete(void*, void*) { GPR_ASSERT(false); }
+
+  void StartCall() override {
+    // This call initiates two batches, plus any backlog, each with a callback
+    // 1. Send initial metadata (unless corked) + recv initial metadata
+    // 2. Any backlog
+    // 3. Recv trailing metadata
+
+    start_tag_.Set(
+        call_.call(),
+        [this](bool ok) {
+          reactor_->OnReadInitialMetadataDone(
+              ok && !reactor_->InternalTrailersOnly(call_.call()));
+          MaybeFinish(/*from_reaction=*/true);
+        },
+        &start_ops_, /*can_inline=*/false);
+    start_ops_.SendInitialMetadata(&context_->send_initial_metadata_,
+                                   context_->initial_metadata_flags());
+    start_ops_.RecvInitialMetadata(context_);
+    start_ops_.set_core_cq_tag(&start_tag_);
+    call_.PerformOps(&start_ops_);
+
+    // Also set up the read tag so it doesn't have to be set up each time
+    read_tag_.Set(
+        call_.call(),
+        [this](bool ok) {
+          reactor_->OnReadDone(ok);
+          MaybeFinish(/*from_reaction=*/true);
+        },
+        &read_ops_, /*can_inline=*/false);
+    read_ops_.set_core_cq_tag(&read_tag_);
+
+    {
+      grpc::internal::MutexLock lock(&start_mu_);
+      if (backlog_.read_ops) {
+        call_.PerformOps(&read_ops_);
+      }
+      started_.store(true, std::memory_order_release);
+    }
+
+    finish_tag_.Set(
+        call_.call(),
+        [this](bool /*ok*/) { MaybeFinish(/*from_reaction=*/true); },
+        &finish_ops_, /*can_inline=*/false);
+    finish_ops_.ClientRecvStatus(context_, &finish_status_);
+    finish_ops_.set_core_cq_tag(&finish_tag_);
+    call_.PerformOps(&finish_ops_);
+  }
+
+  void Read(Response* msg) override {
+    read_ops_.RecvMessage(msg);
+    callbacks_outstanding_.fetch_add(1, std::memory_order_relaxed);
+    if (GPR_UNLIKELY(!started_.load(std::memory_order_acquire))) {
+      grpc::internal::MutexLock lock(&start_mu_);
+      if (GPR_LIKELY(!started_.load(std::memory_order_relaxed))) {
+        backlog_.read_ops = true;
+        return;
+      }
+    }
+    call_.PerformOps(&read_ops_);
+  }
+
+  void AddHold(int holds) override {
+    callbacks_outstanding_.fetch_add(holds, std::memory_order_relaxed);
+  }
+  void RemoveHold() override { MaybeFinish(/*from_reaction=*/false); }
+
+ private:
+  friend class ClientCallbackReaderFactory<Response>;
+
+  template <class Request>
+  ClientCallbackReaderImpl(grpc::internal::Call call,
+                           grpc::ClientContext* context, Request* request,
+                           ClientReadReactor<Response>* reactor)
+      : context_(context), call_(call), reactor_(reactor) {
+    this->BindReactor(reactor);
+    // TODO(vjpai): don't assert
+    GPR_ASSERT(start_ops_.SendMessagePtr(request).ok());
+    start_ops_.ClientSendClose();
+  }
+
+  // MaybeFinish behaves as in ClientCallbackReaderWriterImpl.
+  void MaybeFinish(bool from_reaction) {
+    if (GPR_UNLIKELY(callbacks_outstanding_.fetch_sub(
+                         1, std::memory_order_acq_rel) == 1)) {
+      grpc::Status s = std::move(finish_status_);
+      auto* reactor = reactor_;
+      auto* call = call_.call();
+      this->~ClientCallbackReaderImpl();
+      grpc_call_unref(call);
+      if (GPR_LIKELY(from_reaction)) {
+        reactor->OnDone(s);
+      } else {
+        reactor->InternalScheduleOnDone(std::move(s));
+      }
+    }
+  }
+
+  grpc::ClientContext* const context_;
+  grpc::internal::Call call_;
+  ClientReadReactor<Response>* const reactor_;
+
+  grpc::internal::CallOpSet<grpc::internal::CallOpSendInitialMetadata,
+                            grpc::internal::CallOpSendMessage,
+                            grpc::internal::CallOpClientSendClose,
+                            grpc::internal::CallOpRecvInitialMetadata>
+      start_ops_;
+  grpc::internal::CallbackWithSuccessTag start_tag_;
+
+  grpc::internal::CallOpSet<grpc::internal::CallOpClientRecvStatus> finish_ops_;
+  grpc::internal::CallbackWithSuccessTag finish_tag_;
+  grpc::Status finish_status_;
+
+  grpc::internal::CallOpSet<grpc::internal::CallOpRecvMessage<Response>>
+      read_ops_;
+  grpc::internal::CallbackWithSuccessTag read_tag_;
+
+  struct StartCallBacklog {
+    bool read_ops = false;
+  };
+  StartCallBacklog backlog_ Y_ABSL_GUARDED_BY(start_mu_);
+
+  // Minimum of 2 callbacks to pre-register for start and finish
+  std::atomic<intptr_t> callbacks_outstanding_{2};
+  std::atomic_bool started_{false};
+  grpc::internal::Mutex start_mu_;
+};
+
+template <class Response>
+class ClientCallbackReaderFactory {
+ public:
+  template <class Request>
+  static void Create(grpc::ChannelInterface* channel,
+                     const grpc::internal::RpcMethod& method,
+                     grpc::ClientContext* context, const Request* request,
+                     ClientReadReactor<Response>* reactor) {
+    grpc::internal::Call call =
+        channel->CreateCall(method, context, channel->CallbackCQ());
+
+    grpc_call_ref(call.call());
+    new (grpc_call_arena_alloc(call.call(),
+                               sizeof(ClientCallbackReaderImpl<Response>)))
+        ClientCallbackReaderImpl<Response>(call, context, request, reactor);
+  }
+};
+
+template <class Request>
+class ClientCallbackWriterImpl : public ClientCallbackWriter<Request> {
+ public:
+  // always allocated against a call arena, no memory free required
+  static void operator delete(void* /*ptr*/, std::size_t size) {
+    GPR_ASSERT(size == sizeof(ClientCallbackWriterImpl));
+  }
+
+  // This operator should never be called as the memory should be freed as part
+  // of the arena destruction. It only exists to provide a matching operator
+  // delete to the operator new so that some compilers will not complain (see
+  // https://github.com/grpc/grpc/issues/11301) Note at the time of adding this
+  // there are no tests catching the compiler warning.
+  static void operator delete(void*, void*) { GPR_ASSERT(false); }
+
+  void StartCall() Y_ABSL_LOCKS_EXCLUDED(start_mu_) override {
+    // This call initiates two batches, plus any backlog, each with a callback
+    // 1. Send initial metadata (unless corked) + recv initial metadata
+    // 2. Any backlog
+    // 3. Recv trailing metadata
+
+    if (!start_corked_) {
+      start_ops_.SendInitialMetadata(&context_->send_initial_metadata_,
+                                     context_->initial_metadata_flags());
+    }
+    call_.PerformOps(&start_ops_);
+
+    {
+      grpc::internal::MutexLock lock(&start_mu_);
+
+      if (backlog_.write_ops) {
+        call_.PerformOps(&write_ops_);
+      }
+      if (backlog_.writes_done_ops) {
+        call_.PerformOps(&writes_done_ops_);
+      }
+      call_.PerformOps(&finish_ops_);
+      // The last thing in this critical section is to set started_ so that it
+      // can be used lock-free as well.
+      started_.store(true, std::memory_order_release);
+    }
+    // MaybeFinish outside the lock to make sure that destruction of this object
+    // doesn't take place while holding the lock (which would cause the lock to
+    // be released after destruction)
+    this->MaybeFinish(/*from_reaction=*/false);
+  }
+
+  void Write(const Request* msg, grpc::WriteOptions options)
+      Y_ABSL_LOCKS_EXCLUDED(start_mu_) override {
+    if (GPR_UNLIKELY(options.is_last_message())) {
+      options.set_buffer_hint();
+      write_ops_.ClientSendClose();
+    }
+    // TODO(vjpai): don't assert
+    GPR_ASSERT(write_ops_.SendMessagePtr(msg, options).ok());
+    callbacks_outstanding_.fetch_add(1, std::memory_order_relaxed);
+
+    if (GPR_UNLIKELY(corked_write_needed_)) {
+      write_ops_.SendInitialMetadata(&context_->send_initial_metadata_,
+                                     context_->initial_metadata_flags());
+      corked_write_needed_ = false;
+    }
+
+    if (GPR_UNLIKELY(!started_.load(std::memory_order_acquire))) {
+      grpc::internal::MutexLock lock(&start_mu_);
+      if (GPR_LIKELY(!started_.load(std::memory_order_relaxed))) {
+        backlog_.write_ops = true;
+        return;
+      }
+    }
+    call_.PerformOps(&write_ops_);
+  }
+
+  void WritesDone() Y_ABSL_LOCKS_EXCLUDED(start_mu_) override {
+    writes_done_ops_.ClientSendClose();
+    writes_done_tag_.Set(
+        call_.call(),
+        [this](bool ok) {
+          reactor_->OnWritesDoneDone(ok);
+          MaybeFinish(/*from_reaction=*/true);
+        },
+        &writes_done_ops_, /*can_inline=*/false);
+    writes_done_ops_.set_core_cq_tag(&writes_done_tag_);
+    callbacks_outstanding_.fetch_add(1, std::memory_order_relaxed);
+
+    if (GPR_UNLIKELY(corked_write_needed_)) {
+      writes_done_ops_.SendInitialMetadata(&context_->send_initial_metadata_,
+                                           context_->initial_metadata_flags());
+      corked_write_needed_ = false;
+    }
+
+    if (GPR_UNLIKELY(!started_.load(std::memory_order_acquire))) {
+      grpc::internal::MutexLock lock(&start_mu_);
+      if (GPR_LIKELY(!started_.load(std::memory_order_relaxed))) {
+        backlog_.writes_done_ops = true;
+        return;
+      }
+    }
+    call_.PerformOps(&writes_done_ops_);
+  }
+
+  void AddHold(int holds) override {
+    callbacks_outstanding_.fetch_add(holds, std::memory_order_relaxed);
+  }
+  void RemoveHold() override { MaybeFinish(/*from_reaction=*/false); }
+
+ private:
+  friend class ClientCallbackWriterFactory<Request>;
+
+  template <class Response>
+  ClientCallbackWriterImpl(grpc::internal::Call call,
+                           grpc::ClientContext* context, Response* response,
+                           ClientWriteReactor<Request>* reactor)
+      : context_(context),
+        call_(call),
+        reactor_(reactor),
+        start_corked_(context_->initial_metadata_corked_),
+        corked_write_needed_(start_corked_) {
+    this->BindReactor(reactor);
+
+    // Set up the unchanging parts of the start and write tags and ops.
+    start_tag_.Set(
+        call_.call(),
+        [this](bool ok) {
+          reactor_->OnReadInitialMetadataDone(
+              ok && !reactor_->InternalTrailersOnly(call_.call()));
+          MaybeFinish(/*from_reaction=*/true);
+        },
+        &start_ops_, /*can_inline=*/false);
+    start_ops_.RecvInitialMetadata(context_);
+    start_ops_.set_core_cq_tag(&start_tag_);
+
+    write_tag_.Set(
+        call_.call(),
+        [this](bool ok) {
+          reactor_->OnWriteDone(ok);
+          MaybeFinish(/*from_reaction=*/true);
+        },
+        &write_ops_, /*can_inline=*/false);
+    write_ops_.set_core_cq_tag(&write_tag_);
+
+    // Also set up the Finish tag and op set.
+    finish_ops_.RecvMessage(response);
+    finish_ops_.AllowNoMessage();
+    finish_tag_.Set(
+        call_.call(),
+        [this](bool /*ok*/) { MaybeFinish(/*from_reaction=*/true); },
+        &finish_ops_,
+        /*can_inline=*/false);
+    finish_ops_.ClientRecvStatus(context_, &finish_status_);
+    finish_ops_.set_core_cq_tag(&finish_tag_);
+  }
+
+  // MaybeFinish behaves as in ClientCallbackReaderWriterImpl.
+  void MaybeFinish(bool from_reaction) {
+    if (GPR_UNLIKELY(callbacks_outstanding_.fetch_sub(
+                         1, std::memory_order_acq_rel) == 1)) {
+      grpc::Status s = std::move(finish_status_);
+      auto* reactor = reactor_;
+      auto* call = call_.call();
+      this->~ClientCallbackWriterImpl();
+      grpc_call_unref(call);
+      if (GPR_LIKELY(from_reaction)) {
+        reactor->OnDone(s);
+      } else {
+        reactor->InternalScheduleOnDone(std::move(s));
+      }
+    }
+  }
+
+  grpc::ClientContext* const context_;
+  grpc::internal::Call call_;
+  ClientWriteReactor<Request>* const reactor_;
+
+  grpc::internal::CallOpSet<grpc::internal::CallOpSendInitialMetadata,
+                            grpc::internal::CallOpRecvInitialMetadata>
+      start_ops_;
+  grpc::internal::CallbackWithSuccessTag start_tag_;
+  const bool start_corked_;
+  bool corked_write_needed_;  // no lock needed since only accessed in
+                              // Write/WritesDone which cannot be concurrent
+
+  grpc::internal::CallOpSet<grpc::internal::CallOpGenericRecvMessage,
+                            grpc::internal::CallOpClientRecvStatus>
+      finish_ops_;
+  grpc::internal::CallbackWithSuccessTag finish_tag_;
+  grpc::Status finish_status_;
+
+  grpc::internal::CallOpSet<grpc::internal::CallOpSendInitialMetadata,
+                            grpc::internal::CallOpSendMessage,
+                            grpc::internal::CallOpClientSendClose>
+      write_ops_;
+  grpc::internal::CallbackWithSuccessTag write_tag_;
+
+  grpc::internal::CallOpSet<grpc::internal::CallOpSendInitialMetadata,
+                            grpc::internal::CallOpClientSendClose>
+      writes_done_ops_;
+  grpc::internal::CallbackWithSuccessTag writes_done_tag_;
+
+  struct StartCallBacklog {
+    bool write_ops = false;
+    bool writes_done_ops = false;
+  };
+  StartCallBacklog backlog_ Y_ABSL_GUARDED_BY(start_mu_);
+
+  // Minimum of 3 callbacks to pre-register for start ops, StartCall, and finish
+  std::atomic<intptr_t> callbacks_outstanding_{3};
+  std::atomic_bool started_{false};
+  grpc::internal::Mutex start_mu_;
+};
+
+template <class Request>
+class ClientCallbackWriterFactory {
+ public:
+  template <class Response>
+  static void Create(grpc::ChannelInterface* channel,
+                     const grpc::internal::RpcMethod& method,
+                     grpc::ClientContext* context, Response* response,
+                     ClientWriteReactor<Request>* reactor) {
+    grpc::internal::Call call =
+        channel->CreateCall(method, context, channel->CallbackCQ());
+
+    grpc_call_ref(call.call());
+    new (grpc_call_arena_alloc(call.call(),
+                               sizeof(ClientCallbackWriterImpl<Request>)))
+        ClientCallbackWriterImpl<Request>(call, context, response, reactor);
+  }
+};
+
+class ClientCallbackUnaryImpl final : public ClientCallbackUnary {
+ public:
+  // always allocated against a call arena, no memory free required
+  static void operator delete(void* /*ptr*/, std::size_t size) {
+    GPR_ASSERT(size == sizeof(ClientCallbackUnaryImpl));
+  }
+
+  // This operator should never be called as the memory should be freed as part
+  // of the arena destruction. It only exists to provide a matching operator
+  // delete to the operator new so that some compilers will not complain (see
+  // https://github.com/grpc/grpc/issues/11301) Note at the time of adding this
+  // there are no tests catching the compiler warning.
+  static void operator delete(void*, void*) { GPR_ASSERT(false); }
+
+  void StartCall() override {
+    // This call initiates two batches, each with a callback
+    // 1. Send initial metadata + write + writes done + recv initial metadata
+    // 2. Read message, recv trailing metadata
+
+    start_tag_.Set(
+        call_.call(),
+        [this](bool ok) {
+          reactor_->OnReadInitialMetadataDone(
+              ok && !reactor_->InternalTrailersOnly(call_.call()));
+          MaybeFinish();
+        },
+        &start_ops_, /*can_inline=*/false);
+    start_ops_.SendInitialMetadata(&context_->send_initial_metadata_,
+                                   context_->initial_metadata_flags());
+    start_ops_.RecvInitialMetadata(context_);
+    start_ops_.set_core_cq_tag(&start_tag_);
+    call_.PerformOps(&start_ops_);
+
+    finish_tag_.Set(
+        call_.call(), [this](bool /*ok*/) { MaybeFinish(); }, &finish_ops_,
+        /*can_inline=*/false);
+    finish_ops_.ClientRecvStatus(context_, &finish_status_);
+    finish_ops_.set_core_cq_tag(&finish_tag_);
+    call_.PerformOps(&finish_ops_);
+  }
+
+ private:
+  friend class ClientCallbackUnaryFactory;
+
+  template <class Request, class Response>
+  ClientCallbackUnaryImpl(grpc::internal::Call call,
+                          grpc::ClientContext* context, Request* request,
+                          Response* response, ClientUnaryReactor* reactor)
+      : context_(context), call_(call), reactor_(reactor) {
+    this->BindReactor(reactor);
+    // TODO(vjpai): don't assert
+    GPR_ASSERT(start_ops_.SendMessagePtr(request).ok());
+    start_ops_.ClientSendClose();
+    finish_ops_.RecvMessage(response);
+    finish_ops_.AllowNoMessage();
+  }
+
+  // In the unary case, MaybeFinish is only ever invoked from a
+  // library-initiated reaction, so it will just directly call OnDone if this is
+  // the last reaction for this RPC.
+  void MaybeFinish() {
+    if (GPR_UNLIKELY(callbacks_outstanding_.fetch_sub(
+                         1, std::memory_order_acq_rel) == 1)) {
+      grpc::Status s = std::move(finish_status_);
+      auto* reactor = reactor_;
+      auto* call = call_.call();
+      this->~ClientCallbackUnaryImpl();
+      grpc_call_unref(call);
+      reactor->OnDone(s);
+    }
+  }
+
+  grpc::ClientContext* const context_;
+  grpc::internal::Call call_;
+  ClientUnaryReactor* const reactor_;
+
+  grpc::internal::CallOpSet<grpc::internal::CallOpSendInitialMetadata,
+                            grpc::internal::CallOpSendMessage,
+                            grpc::internal::CallOpClientSendClose,
+                            grpc::internal::CallOpRecvInitialMetadata>
+      start_ops_;
+  grpc::internal::CallbackWithSuccessTag start_tag_;
+
+  grpc::internal::CallOpSet<grpc::internal::CallOpGenericRecvMessage,
+                            grpc::internal::CallOpClientRecvStatus>
+      finish_ops_;
+  grpc::internal::CallbackWithSuccessTag finish_tag_;
+  grpc::Status finish_status_;
+
+  // This call will have 2 callbacks: start and finish
+  std::atomic<intptr_t> callbacks_outstanding_{2};
+};
+
+class ClientCallbackUnaryFactory {
+ public:
+  template <class Request, class Response, class BaseRequest = Request,
+            class BaseResponse = Response>
+  static void Create(grpc::ChannelInterface* channel,
+                     const grpc::internal::RpcMethod& method,
+                     grpc::ClientContext* context, const Request* request,
+                     Response* response, ClientUnaryReactor* reactor) {
+    grpc::internal::Call call =
+        channel->CreateCall(method, context, channel->CallbackCQ());
+
+    grpc_call_ref(call.call());
+
+    new (grpc_call_arena_alloc(call.call(), sizeof(ClientCallbackUnaryImpl)))
+        ClientCallbackUnaryImpl(call, context,
+                                static_cast<const BaseRequest*>(request),
+                                static_cast<BaseResponse*>(response), reactor);
+  }
+};
+
+}  // namespace internal
+}  // namespace grpc
 
 #endif  // GRPCPP_SUPPORT_CLIENT_CALLBACK_H
diff --git a/contrib/libs/grpc/include/grpcpp/support/client_interceptor.h b/contrib/libs/grpc/include/grpcpp/support/client_interceptor.h
index 8e5e1ce67b..ef84d18439 100644
--- a/contrib/libs/grpc/include/grpcpp/support/client_interceptor.h
+++ b/contrib/libs/grpc/include/grpcpp/support/client_interceptor.h
@@ -1,20 +1,20 @@
-/*
- *
- * Copyright 2015 gRPC authors.
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
- */
+//
+//
+// Copyright 2015 gRPC authors.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+//
 
 #ifndef GRPCPP_SUPPORT_CLIENT_INTERCEPTOR_H
 #define GRPCPP_SUPPORT_CLIENT_INTERCEPTOR_H
@@ -22,6 +22,7 @@
 #include <memory>
 #include <vector>
 
+#include <grpc/support/log.h>
 #include <grpcpp/impl/rpc_method.h>
 #include <grpcpp/support/interceptor.h>
 #include <grpcpp/support/string_ref.h>
@@ -135,7 +136,7 @@ class ClientRpcInfo {
   // Runs interceptor at pos \a pos.
   void RunInterceptor(
       experimental::InterceptorBatchMethods* interceptor_methods, size_t pos) {
-    GPR_CODEGEN_ASSERT(pos < interceptors_.size());
+    GPR_ASSERT(pos < interceptors_.size());
     interceptors_[pos]->Intercept(interceptor_methods);
   }
 
diff --git a/contrib/libs/grpc/include/grpcpp/support/config.h b/contrib/libs/grpc/include/grpcpp/support/config.h
index f2632f2640..6e28fe73c8 100644
--- a/contrib/libs/grpc/include/grpcpp/support/config.h
+++ b/contrib/libs/grpc/include/grpcpp/support/config.h
@@ -1,24 +1,44 @@
-/*
- *
- * Copyright 2015 gRPC authors.
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
- */
+//
+//
+// Copyright 2015 gRPC authors.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+//
 
 #ifndef GRPCPP_SUPPORT_CONFIG_H
 #define GRPCPP_SUPPORT_CONFIG_H
 
-#include <grpcpp/impl/codegen/config.h>  // IWYU pragma: export
+#include <util/generic/string.h>
+#include <util/string/cast.h>
+
+/// The following macros are deprecated and appear only for users
+/// with PB files generated using gRPC 1.0.x plugins. They should
+/// not be used in new code
+#define GRPC_OVERRIDE override  // deprecated
+#define GRPC_FINAL final        // deprecated
+
+#ifdef GRPC_CUSTOM_STRING
+#warning GRPC_CUSTOM_STRING is no longer supported. Please use TString.
+#endif
+
+namespace grpc {
+
+// Using grpc::string and grpc::to_string is discouraged in favor of
+// TString and ::ToString. This is only for legacy code using
+// them explictly.
+typedef TString string;
+
+}  // namespace grpc
 
 #endif  // GRPCPP_SUPPORT_CONFIG_H
diff --git a/contrib/libs/grpc/include/grpcpp/support/interceptor.h b/contrib/libs/grpc/include/grpcpp/support/interceptor.h
index d4f2ea180e..7c5c95a664 100644
--- a/contrib/libs/grpc/include/grpcpp/support/interceptor.h
+++ b/contrib/libs/grpc/include/grpcpp/support/interceptor.h
@@ -1,24 +1,231 @@
-/*
- *
- * Copyright 2015 gRPC authors.
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
- */
+//
+//
+// Copyright 2015 gRPC authors.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+//
 
 #ifndef GRPCPP_SUPPORT_INTERCEPTOR_H
 #define GRPCPP_SUPPORT_INTERCEPTOR_H
 
-#include <grpcpp/impl/codegen/interceptor.h>  // IWYU pragma: export
+#include <map>
+#include <memory>
+#include <util/generic/string.h>
+#include <util/string/cast.h>
+
+#include <grpc/impl/grpc_types.h>
+#include <grpcpp/impl/metadata_map.h>
+#include <grpcpp/support/byte_buffer.h>
+#include <grpcpp/support/config.h>
+#include <grpcpp/support/string_ref.h>
+
+namespace grpc {
+
+class ChannelInterface;
+class Status;
+
+namespace experimental {
+
+/// An enumeration of different possible points at which the \a Intercept
+/// method of the \a Interceptor interface may be called. Any given call
+/// to \a Intercept will include one or more of these hook points, and
+/// each hook point makes certain types of information available to the
+/// interceptor.
+/// In these enumeration names, PRE_SEND means that an interception has taken
+/// place between the time the application provided a certain type of data
+/// (e.g., initial metadata, status) and the time that that data goes to the
+/// other side. POST_SEND means that the data has been committed for going to
+/// the other side (even if it has not yet been received at the other side).
+/// PRE_RECV means an interception between the time that a certain
+/// operation has been requested and it is available. POST_RECV means that a
+/// result is available but has not yet been passed back to the application.
+/// A batch of interception points will only contain either PRE or POST hooks
+/// but not both types. For example, a batch with PRE_SEND hook points will not
+/// contain POST_RECV or POST_SEND ops. Likewise, a batch with POST_* ops can
+/// not contain PRE_* ops.
+enum class InterceptionHookPoints {
+  /// The first three in this list are for clients and servers
+  PRE_SEND_INITIAL_METADATA,
+  PRE_SEND_MESSAGE,
+  POST_SEND_MESSAGE,
+  PRE_SEND_STATUS,  // server only
+  PRE_SEND_CLOSE,   // client only: WritesDone for stream; after write in unary
+  /// The following three are for hijacked clients only. A batch with PRE_RECV_*
+  /// hook points will never contain hook points of other types.
+  PRE_RECV_INITIAL_METADATA,
+  PRE_RECV_MESSAGE,
+  PRE_RECV_STATUS,
+  /// The following two are for all clients and servers
+  POST_RECV_INITIAL_METADATA,
+  POST_RECV_MESSAGE,
+  POST_RECV_STATUS,  // client only
+  POST_RECV_CLOSE,   // server only
+  /// This is a special hook point available to both clients and servers when
+  /// TryCancel() is performed.
+  ///  - No other hook points will be present along with this.
+  ///  - It is illegal for an interceptor to block/delay this operation.
+  ///  - ALL interceptors see this hook point irrespective of whether the
+  ///    RPC was hijacked or not.
+  PRE_SEND_CANCEL,
+  NUM_INTERCEPTION_HOOKS
+};
+
+/// Class that is passed as an argument to the \a Intercept method
+/// of the application's \a Interceptor interface implementation. It has five
+/// purposes:
+///   1. Indicate which hook points are present at a specific interception
+///   2. Allow an interceptor to inform the library that an RPC should
+///      continue to the next stage of its processing (which may be another
+///      interceptor or the main path of the library)
+///   3. Allow an interceptor to hijack the processing of the RPC (only for
+///      client-side RPCs with PRE_SEND_INITIAL_METADATA) so that it does not
+///      proceed with normal processing beyond that stage
+///   4. Access the relevant fields of an RPC at each interception point
+///   5. Set some fields of an RPC at each interception point, when possible
+class InterceptorBatchMethods {
+ public:
+  virtual ~InterceptorBatchMethods() {}
+  /// Determine whether the current batch has an interception hook point
+  /// of type \a type
+  virtual bool QueryInterceptionHookPoint(InterceptionHookPoints type) = 0;
+  /// Signal that the interceptor is done intercepting the current batch of the
+  /// RPC. Every interceptor must either call Proceed or Hijack on each
+  /// interception. In most cases, only Proceed will be used. Explicit use of
+  /// Proceed is what enables interceptors to delay the processing of RPCs
+  /// while they perform other work.
+  /// Proceed is a no-op if the batch contains PRE_SEND_CANCEL. Simply returning
+  /// from the Intercept method does the job of continuing the RPC in this case.
+  /// This is because PRE_SEND_CANCEL is always in a separate batch and is not
+  /// allowed to be delayed.
+  virtual void Proceed() = 0;
+  /// Indicate that the interceptor has hijacked the RPC (only valid if the
+  /// batch contains send_initial_metadata on the client side). Later
+  /// interceptors in the interceptor list will not be called. Later batches
+  /// on the same RPC will go through interception, but only up to the point
+  /// of the hijacking interceptor.
+  virtual void Hijack() = 0;
+
+  /// Send Message Methods
+  /// GetSerializedSendMessage and GetSendMessage/ModifySendMessage are the
+  /// available methods to view and modify the request payload. An interceptor
+  /// can access the payload in either serialized form or non-serialized form
+  /// but not both at the same time.
+  /// gRPC performs serialization in a lazy manner, which means
+  /// that a call to GetSerializedSendMessage will result in a serialization
+  /// operation if the payload stored is not in the serialized form already; the
+  /// non-serialized form will be lost and GetSendMessage will no longer return
+  /// a valid pointer, and this will remain true for later interceptors too.
+  /// This can change however if ModifySendMessage is used to replace the
+  /// current payload. Note that ModifySendMessage requires a new payload
+  /// message in the non-serialized form. This will overwrite the existing
+  /// payload irrespective of whether it had been serialized earlier. Also note
+  /// that gRPC Async API requires early serialization of the payload which
+  /// means that the payload would be available in the serialized form only
+  /// unless an interceptor replaces the payload with ModifySendMessage.
+
+  /// Returns a modifable ByteBuffer holding the serialized form of the message
+  /// that is going to be sent. Valid for PRE_SEND_MESSAGE interceptions.
+  /// A return value of nullptr indicates that this ByteBuffer is not valid.
+  virtual ByteBuffer* GetSerializedSendMessage() = 0;
+
+  /// Returns a non-modifiable pointer to the non-serialized form of the message
+  /// to be sent. Valid for PRE_SEND_MESSAGE interceptions. A return value of
+  /// nullptr indicates that this field is not valid.
+  virtual const void* GetSendMessage() = 0;
+
+  /// Overwrites the message to be sent with \a message. \a message should be in
+  /// the non-serialized form expected by the method. Valid for PRE_SEND_MESSAGE
+  /// interceptions. Note that the interceptor is responsible for maintaining
+  /// the life of the message till it is serialized or it receives the
+  /// POST_SEND_MESSAGE interception point, whichever happens earlier. The
+  /// modifying interceptor may itself force early serialization by calling
+  /// GetSerializedSendMessage.
+  virtual void ModifySendMessage(const void* message) = 0;
+
+  /// Checks whether the SEND MESSAGE op succeeded. Valid for POST_SEND_MESSAGE
+  /// interceptions.
+  virtual bool GetSendMessageStatus() = 0;
+
+  /// Returns a modifiable multimap of the initial metadata to be sent. Valid
+  /// for PRE_SEND_INITIAL_METADATA interceptions. A value of nullptr indicates
+  /// that this field is not valid.
+  virtual std::multimap<TString, TString>* GetSendInitialMetadata() = 0;
+
+  /// Returns the status to be sent. Valid for PRE_SEND_STATUS interceptions.
+  virtual Status GetSendStatus() = 0;
+
+  /// Overwrites the status with \a status. Valid for PRE_SEND_STATUS
+  /// interceptions.
+  virtual void ModifySendStatus(const Status& status) = 0;
+
+  /// Returns a modifiable multimap of the trailing metadata to be sent. Valid
+  /// for PRE_SEND_STATUS interceptions. A value of nullptr indicates
+  /// that this field is not valid.
+  virtual std::multimap<TString, TString>*
+  GetSendTrailingMetadata() = 0;
+
+  /// Returns a pointer to the modifiable received message. Note that the
+  /// message is already deserialized but the type is not set; the interceptor
+  /// should static_cast to the appropriate type before using it. This is valid
+  /// for PRE_RECV_MESSAGE and POST_RECV_MESSAGE interceptions; nullptr for not
+  /// valid
+  virtual void* GetRecvMessage() = 0;
+
+  /// Returns a modifiable multimap of the received initial metadata.
+  /// Valid for PRE_RECV_INITIAL_METADATA and POST_RECV_INITIAL_METADATA
+  /// interceptions; nullptr if not valid
+  virtual std::multimap<grpc::string_ref, grpc::string_ref>*
+  GetRecvInitialMetadata() = 0;
+
+  /// Returns a modifiable view of the received status on PRE_RECV_STATUS and
+  /// POST_RECV_STATUS interceptions; nullptr if not valid.
+  virtual Status* GetRecvStatus() = 0;
+
+  /// Returns a modifiable multimap of the received trailing metadata on
+  /// PRE_RECV_STATUS and POST_RECV_STATUS interceptions; nullptr if not valid
+  virtual std::multimap<grpc::string_ref, grpc::string_ref>*
+  GetRecvTrailingMetadata() = 0;
+
+  /// Gets an intercepted channel. When a call is started on this interceptor,
+  /// only interceptors after the current interceptor are created from the
+  /// factory objects registered with the channel. This allows calls to be
+  /// started from interceptors without infinite regress through the interceptor
+  /// list.
+  virtual std::unique_ptr<ChannelInterface> GetInterceptedChannel() = 0;
+
+  /// On a hijacked RPC, an interceptor can decide to fail a PRE_RECV_MESSAGE
+  /// op. This would be a signal to the reader that there will be no more
+  /// messages, or the stream has failed or been cancelled.
+  virtual void FailHijackedRecvMessage() = 0;
+
+  /// On a hijacked RPC/ to-be hijacked RPC, this can be called to fail a SEND
+  /// MESSAGE op
+  virtual void FailHijackedSendMessage() = 0;
+};
+
+/// Interface for an interceptor. Interceptor authors must create a class
+/// that derives from this parent class.
+class Interceptor {
+ public:
+  virtual ~Interceptor() {}
+
+  /// The one public method of an Interceptor interface. Override this to
+  /// trigger the desired actions at the hook points described above.
+  virtual void Intercept(InterceptorBatchMethods* methods) = 0;
+};
+
+}  // namespace experimental
+}  // namespace grpc
 
 #endif  // GRPCPP_SUPPORT_INTERCEPTOR_H
diff --git a/contrib/libs/grpc/include/grpcpp/impl/codegen/message_allocator.h b/contrib/libs/grpc/include/grpcpp/support/message_allocator.h
index 440c7f1d23..8e627900e5 100644
--- a/contrib/libs/grpc/include/grpcpp/impl/codegen/message_allocator.h
+++ b/contrib/libs/grpc/include/grpcpp/support/message_allocator.h
@@ -1,25 +1,23 @@
-/*
- *
- * Copyright 2019 gRPC authors.
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
- */
+//
+//
+// Copyright 2019 gRPC authors.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+//
 
-#ifndef GRPCPP_IMPL_CODEGEN_MESSAGE_ALLOCATOR_H
-#define GRPCPP_IMPL_CODEGEN_MESSAGE_ALLOCATOR_H
-
-// IWYU pragma: private, include <grpcpp/support/message_allocator.h>
+#ifndef GRPCPP_SUPPORT_MESSAGE_ALLOCATOR_H
+#define GRPCPP_SUPPORT_MESSAGE_ALLOCATOR_H
 
 namespace grpc {
 
@@ -70,4 +68,4 @@ class MessageAllocator {
 
 }  // namespace grpc
 
-#endif  // GRPCPP_IMPL_CODEGEN_MESSAGE_ALLOCATOR_H
+#endif  // GRPCPP_SUPPORT_MESSAGE_ALLOCATOR_H
diff --git a/contrib/libs/grpc/include/grpcpp/support/method_handler.h b/contrib/libs/grpc/include/grpcpp/support/method_handler.h
index 0b97a7af03..e4ec4a88d8 100644
--- a/contrib/libs/grpc/include/grpcpp/support/method_handler.h
+++ b/contrib/libs/grpc/include/grpcpp/support/method_handler.h
@@ -1,24 +1,405 @@
-/*
- *
- * Copyright 2015 gRPC authors.
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
- */
+//
+//
+// Copyright 2015 gRPC authors.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+//
 
 #ifndef GRPCPP_SUPPORT_METHOD_HANDLER_H
 #define GRPCPP_SUPPORT_METHOD_HANDLER_H
 
-#include <grpcpp/impl/codegen/method_handler.h>  // IWYU pragma: export
+#include <grpc/byte_buffer.h>
+#include <grpc/support/log.h>
+#include <grpcpp/impl/rpc_service_method.h>
+#include <grpcpp/support/byte_buffer.h>
+#include <grpcpp/support/sync_stream.h>
+
+namespace grpc {
+
+namespace internal {
+
+// Invoke the method handler, fill in the status, and
+// return whether or not we finished safely (without an exception).
+// Note that exception handling is 0-cost in most compiler/library
+// implementations (except when an exception is actually thrown),
+// so this process doesn't require additional overhead in the common case.
+// Additionally, we don't need to return if we caught an exception or not;
+// the handling is the same in either case.
+template <class Callable>
+::grpc::Status CatchingFunctionHandler(Callable&& handler) {
+#if GRPC_ALLOW_EXCEPTIONS
+  try {
+    return handler();
+  } catch (...) {
+    return grpc::Status(grpc::StatusCode::UNKNOWN,
+                        "Unexpected error in RPC handling");
+  }
+#else   // GRPC_ALLOW_EXCEPTIONS
+  return handler();
+#endif  // GRPC_ALLOW_EXCEPTIONS
+}
+
+/// A helper function with reduced templating to do the common work needed to
+/// actually send the server response. Uses non-const parameter for Status since
+/// this should only ever be called from the end of the RunHandler method.
+
+template <class ResponseType>
+void UnaryRunHandlerHelper(const MethodHandler::HandlerParameter& param,
+                           ResponseType* rsp, grpc::Status& status) {
+  GPR_ASSERT(!param.server_context->sent_initial_metadata_);
+  grpc::internal::CallOpSet<grpc::internal::CallOpSendInitialMetadata,
+                            grpc::internal::CallOpSendMessage,
+                            grpc::internal::CallOpServerSendStatus>
+      ops;
+  ops.SendInitialMetadata(&param.server_context->initial_metadata_,
+                          param.server_context->initial_metadata_flags());
+  if (param.server_context->compression_level_set()) {
+    ops.set_compression_level(param.server_context->compression_level());
+  }
+  if (status.ok()) {
+    status = ops.SendMessagePtr(rsp);
+  }
+  ops.ServerSendStatus(&param.server_context->trailing_metadata_, status);
+  param.call->PerformOps(&ops);
+  param.call->cq()->Pluck(&ops);
+}
+
+/// A helper function with reduced templating to do deserializing.
+
+template <class RequestType>
+void* UnaryDeserializeHelper(grpc_byte_buffer* req, grpc::Status* status,
+                             RequestType* request) {
+  grpc::ByteBuffer buf;
+  buf.set_buffer(req);
+  *status = grpc::SerializationTraits<RequestType>::Deserialize(
+      &buf, static_cast<RequestType*>(request));
+  buf.Release();
+  if (status->ok()) {
+    return request;
+  }
+  request->~RequestType();
+  return nullptr;
+}
+
+/// A wrapper class of an application provided rpc method handler.
+template <class ServiceType, class RequestType, class ResponseType,
+          class BaseRequestType = RequestType,
+          class BaseResponseType = ResponseType>
+class RpcMethodHandler : public grpc::internal::MethodHandler {
+ public:
+  RpcMethodHandler(
+      std::function<grpc::Status(ServiceType*, grpc::ServerContext*,
+                                 const RequestType*, ResponseType*)>
+          func,
+      ServiceType* service)
+      : func_(func), service_(service) {}
+
+  void RunHandler(const HandlerParameter& param) final {
+    ResponseType rsp;
+    grpc::Status status = param.status;
+    if (status.ok()) {
+      status = CatchingFunctionHandler([this, &param, &rsp] {
+        return func_(service_,
+                     static_cast<grpc::ServerContext*>(param.server_context),
+                     static_cast<RequestType*>(param.request), &rsp);
+      });
+      static_cast<RequestType*>(param.request)->~RequestType();
+    }
+    UnaryRunHandlerHelper(param, static_cast<BaseResponseType*>(&rsp), status);
+  }
+
+  void* Deserialize(grpc_call* call, grpc_byte_buffer* req,
+                    grpc::Status* status, void** /*handler_data*/) final {
+    auto* request =
+        new (grpc_call_arena_alloc(call, sizeof(RequestType))) RequestType;
+    return UnaryDeserializeHelper(req, status,
+                                  static_cast<BaseRequestType*>(request));
+  }
+
+ private:
+  /// Application provided rpc handler function.
+  std::function<grpc::Status(ServiceType*, grpc::ServerContext*,
+                             const RequestType*, ResponseType*)>
+      func_;
+  // The class the above handler function lives in.
+  ServiceType* service_;
+};
+
+/// A wrapper class of an application provided client streaming handler.
+template <class ServiceType, class RequestType, class ResponseType>
+class ClientStreamingHandler : public grpc::internal::MethodHandler {
+ public:
+  ClientStreamingHandler(
+      std::function<grpc::Status(ServiceType*, grpc::ServerContext*,
+                                 ServerReader<RequestType>*, ResponseType*)>
+          func,
+      ServiceType* service)
+      : func_(func), service_(service) {}
+
+  void RunHandler(const HandlerParameter& param) final {
+    ServerReader<RequestType> reader(
+        param.call, static_cast<grpc::ServerContext*>(param.server_context));
+    ResponseType rsp;
+    grpc::Status status =
+        CatchingFunctionHandler([this, &param, &reader, &rsp] {
+          return func_(service_,
+                       static_cast<grpc::ServerContext*>(param.server_context),
+                       &reader, &rsp);
+        });
+
+    grpc::internal::CallOpSet<grpc::internal::CallOpSendInitialMetadata,
+                              grpc::internal::CallOpSendMessage,
+                              grpc::internal::CallOpServerSendStatus>
+        ops;
+    if (!param.server_context->sent_initial_metadata_) {
+      ops.SendInitialMetadata(&param.server_context->initial_metadata_,
+                              param.server_context->initial_metadata_flags());
+      if (param.server_context->compression_level_set()) {
+        ops.set_compression_level(param.server_context->compression_level());
+      }
+    }
+    if (status.ok()) {
+      status = ops.SendMessagePtr(&rsp);
+    }
+    ops.ServerSendStatus(&param.server_context->trailing_metadata_, status);
+    param.call->PerformOps(&ops);
+    param.call->cq()->Pluck(&ops);
+  }
+
+ private:
+  std::function<grpc::Status(ServiceType*, grpc::ServerContext*,
+                             ServerReader<RequestType>*, ResponseType*)>
+      func_;
+  ServiceType* service_;
+};
+
+/// A wrapper class of an application provided server streaming handler.
+template <class ServiceType, class RequestType, class ResponseType>
+class ServerStreamingHandler : public grpc::internal::MethodHandler {
+ public:
+  ServerStreamingHandler(std::function<grpc::Status(
+                             ServiceType*, grpc::ServerContext*,
+                             const RequestType*, ServerWriter<ResponseType>*)>
+                             func,
+                         ServiceType* service)
+      : func_(func), service_(service) {}
+
+  void RunHandler(const HandlerParameter& param) final {
+    grpc::Status status = param.status;
+    if (status.ok()) {
+      ServerWriter<ResponseType> writer(
+          param.call, static_cast<grpc::ServerContext*>(param.server_context));
+      status = CatchingFunctionHandler([this, &param, &writer] {
+        return func_(service_,
+                     static_cast<grpc::ServerContext*>(param.server_context),
+                     static_cast<RequestType*>(param.request), &writer);
+      });
+      static_cast<RequestType*>(param.request)->~RequestType();
+    }
+
+    grpc::internal::CallOpSet<grpc::internal::CallOpSendInitialMetadata,
+                              grpc::internal::CallOpServerSendStatus>
+        ops;
+    if (!param.server_context->sent_initial_metadata_) {
+      ops.SendInitialMetadata(&param.server_context->initial_metadata_,
+                              param.server_context->initial_metadata_flags());
+      if (param.server_context->compression_level_set()) {
+        ops.set_compression_level(param.server_context->compression_level());
+      }
+    }
+    ops.ServerSendStatus(&param.server_context->trailing_metadata_, status);
+    param.call->PerformOps(&ops);
+    if (param.server_context->has_pending_ops_) {
+      param.call->cq()->Pluck(&param.server_context->pending_ops_);
+    }
+    param.call->cq()->Pluck(&ops);
+  }
+
+  void* Deserialize(grpc_call* call, grpc_byte_buffer* req,
+                    grpc::Status* status, void** /*handler_data*/) final {
+    grpc::ByteBuffer buf;
+    buf.set_buffer(req);
+    auto* request =
+        new (grpc_call_arena_alloc(call, sizeof(RequestType))) RequestType();
+    *status =
+        grpc::SerializationTraits<RequestType>::Deserialize(&buf, request);
+    buf.Release();
+    if (status->ok()) {
+      return request;
+    }
+    request->~RequestType();
+    return nullptr;
+  }
+
+ private:
+  std::function<grpc::Status(ServiceType*, grpc::ServerContext*,
+                             const RequestType*, ServerWriter<ResponseType>*)>
+      func_;
+  ServiceType* service_;
+};
+
+/// A wrapper class of an application provided bidi-streaming handler.
+/// This also applies to server-streamed implementation of a unary method
+/// with the additional requirement that such methods must have done a
+/// write for status to be ok
+/// Since this is used by more than 1 class, the service is not passed in.
+/// Instead, it is expected to be an implicitly-captured argument of func
+/// (through bind or something along those lines)
+template <class Streamer, bool WriteNeeded>
+class TemplatedBidiStreamingHandler : public grpc::internal::MethodHandler {
+ public:
+  explicit TemplatedBidiStreamingHandler(
+      std::function<grpc::Status(grpc::ServerContext*, Streamer*)> func)
+      : func_(func), write_needed_(WriteNeeded) {}
+
+  void RunHandler(const HandlerParameter& param) final {
+    Streamer stream(param.call,
+                    static_cast<grpc::ServerContext*>(param.server_context));
+    grpc::Status status = CatchingFunctionHandler([this, &param, &stream] {
+      return func_(static_cast<grpc::ServerContext*>(param.server_context),
+                   &stream);
+    });
+
+    grpc::internal::CallOpSet<grpc::internal::CallOpSendInitialMetadata,
+                              grpc::internal::CallOpServerSendStatus>
+        ops;
+    if (!param.server_context->sent_initial_metadata_) {
+      ops.SendInitialMetadata(&param.server_context->initial_metadata_,
+                              param.server_context->initial_metadata_flags());
+      if (param.server_context->compression_level_set()) {
+        ops.set_compression_level(param.server_context->compression_level());
+      }
+      if (write_needed_ && status.ok()) {
+        // If we needed a write but never did one, we need to mark the
+        // status as a fail
+        status = grpc::Status(grpc::StatusCode::INTERNAL,
+                              "Service did not provide response message");
+      }
+    }
+    ops.ServerSendStatus(&param.server_context->trailing_metadata_, status);
+    param.call->PerformOps(&ops);
+    if (param.server_context->has_pending_ops_) {
+      param.call->cq()->Pluck(&param.server_context->pending_ops_);
+    }
+    param.call->cq()->Pluck(&ops);
+  }
+
+ private:
+  std::function<grpc::Status(grpc::ServerContext*, Streamer*)> func_;
+  const bool write_needed_;
+};
+
+template <class ServiceType, class RequestType, class ResponseType>
+class BidiStreamingHandler
+    : public TemplatedBidiStreamingHandler<
+          ServerReaderWriter<ResponseType, RequestType>, false> {
+ public:
+  BidiStreamingHandler(std::function<grpc::Status(
+                           ServiceType*, grpc::ServerContext*,
+                           ServerReaderWriter<ResponseType, RequestType>*)>
+                           func,
+                       ServiceType* service)
+      // TODO(vjpai): When gRPC supports C++14, move-capture func in the below
+      : TemplatedBidiStreamingHandler<
+            ServerReaderWriter<ResponseType, RequestType>, false>(
+            [func, service](
+                grpc::ServerContext* ctx,
+                ServerReaderWriter<ResponseType, RequestType>* streamer) {
+              return func(service, ctx, streamer);
+            }) {}
+};
+
+template <class RequestType, class ResponseType>
+class StreamedUnaryHandler
+    : public TemplatedBidiStreamingHandler<
+          ServerUnaryStreamer<RequestType, ResponseType>, true> {
+ public:
+  explicit StreamedUnaryHandler(
+      std::function<
+          grpc::Status(grpc::ServerContext*,
+                       ServerUnaryStreamer<RequestType, ResponseType>*)>
+          func)
+      : TemplatedBidiStreamingHandler<
+            ServerUnaryStreamer<RequestType, ResponseType>, true>(
+            std::move(func)) {}
+};
+
+template <class RequestType, class ResponseType>
+class SplitServerStreamingHandler
+    : public TemplatedBidiStreamingHandler<
+          ServerSplitStreamer<RequestType, ResponseType>, false> {
+ public:
+  explicit SplitServerStreamingHandler(
+      std::function<
+          grpc::Status(grpc::ServerContext*,
+                       ServerSplitStreamer<RequestType, ResponseType>*)>
+          func)
+      : TemplatedBidiStreamingHandler<
+            ServerSplitStreamer<RequestType, ResponseType>, false>(
+            std::move(func)) {}
+};
+
+/// General method handler class for errors that prevent real method use
+/// e.g., handle unknown method by returning UNIMPLEMENTED error.
+template <grpc::StatusCode code>
+class ErrorMethodHandler : public grpc::internal::MethodHandler {
+ public:
+  explicit ErrorMethodHandler(const TString& message) : message_(message) {}
+
+  template <class T>
+  static void FillOps(grpc::ServerContextBase* context,
+                      const TString& message, T* ops) {
+    grpc::Status status(code, message);
+    if (!context->sent_initial_metadata_) {
+      ops->SendInitialMetadata(&context->initial_metadata_,
+                               context->initial_metadata_flags());
+      if (context->compression_level_set()) {
+        ops->set_compression_level(context->compression_level());
+      }
+      context->sent_initial_metadata_ = true;
+    }
+    ops->ServerSendStatus(&context->trailing_metadata_, status);
+  }
+
+  void RunHandler(const HandlerParameter& param) final {
+    grpc::internal::CallOpSet<grpc::internal::CallOpSendInitialMetadata,
+                              grpc::internal::CallOpServerSendStatus>
+        ops;
+    FillOps(param.server_context, message_, &ops);
+    param.call->PerformOps(&ops);
+    param.call->cq()->Pluck(&ops);
+  }
+
+  void* Deserialize(grpc_call* /*call*/, grpc_byte_buffer* req,
+                    grpc::Status* /*status*/, void** /*handler_data*/) final {
+    // We have to destroy any request payload
+    if (req != nullptr) {
+      grpc_byte_buffer_destroy(req);
+    }
+    return nullptr;
+  }
+
+ private:
+  const TString message_;
+};
+
+typedef ErrorMethodHandler<grpc::StatusCode::UNIMPLEMENTED>
+    UnknownMethodHandler;
+typedef ErrorMethodHandler<grpc::StatusCode::RESOURCE_EXHAUSTED>
+    ResourceExhaustedHandler;
+
+}  // namespace internal
+}  // namespace grpc
 
 #endif  // GRPCPP_SUPPORT_METHOD_HANDLER_H
diff --git a/contrib/libs/grpc/include/grpcpp/impl/codegen/proto_buffer_reader.h b/contrib/libs/grpc/include/grpcpp/support/proto_buffer_reader.h
index 38df095ca0..e89818a3d6 100644
--- a/contrib/libs/grpc/include/grpcpp/impl/codegen/proto_buffer_reader.h
+++ b/contrib/libs/grpc/include/grpcpp/support/proto_buffer_reader.h
@@ -1,44 +1,41 @@
-/*
- *
- * Copyright 2015 gRPC authors.
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
- */
-
-#ifndef GRPCPP_IMPL_CODEGEN_PROTO_BUFFER_READER_H
-#define GRPCPP_IMPL_CODEGEN_PROTO_BUFFER_READER_H
-
-// IWYU pragma: private, include <grpcpp/support/proto_buffer_reader.h>
+//
+//
+// Copyright 2018 gRPC authors.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+//
+
+#ifndef GRPCPP_SUPPORT_PROTO_BUFFER_READER_H
+#define GRPCPP_SUPPORT_PROTO_BUFFER_READER_H
 
 #include <type_traits>
 
-#include <grpc/impl/codegen/byte_buffer_reader.h>
-#include <grpc/impl/codegen/grpc_types.h>
-#include <grpc/impl/codegen/slice.h>
+#include <grpc/byte_buffer.h>
+#include <grpc/byte_buffer_reader.h>
+#include <grpc/impl/grpc_types.h>
+#include <grpc/slice.h>
+#include <grpc/support/log.h>
 #include <grpcpp/impl/codegen/config_protobuf.h>
-#include <grpcpp/impl/codegen/core_codegen_interface.h>
-#include <grpcpp/impl/codegen/serialization_traits.h>
-#include <grpcpp/impl/codegen/status.h>
+#include <grpcpp/impl/serialization_traits.h>
 #include <grpcpp/support/byte_buffer.h>
+#include <grpcpp/support/status.h>
 
 /// This header provides an object that reads bytes directly from a
 /// grpc::ByteBuffer, via the ZeroCopyInputStream interface
 
 namespace grpc {
 
-extern CoreCodegenInterface* g_core_codegen_interface;
-
 /// This is a specialization of the protobuf class ZeroCopyInputStream
 /// The principle is to get one chunk of data at a time from the proto layer,
 /// with options to backup (re-see some bytes) or skip (forward past some bytes)
@@ -54,8 +51,7 @@ class ProtoBufferReader : public grpc::protobuf::io::ZeroCopyInputStream {
     /// Implemented through a grpc_byte_buffer_reader which iterates
     /// over the slices that make up a byte buffer
     if (!buffer->Valid() ||
-        !g_core_codegen_interface->grpc_byte_buffer_reader_init(
-            &reader_, buffer->c_buffer())) {
+        !grpc_byte_buffer_reader_init(&reader_, buffer->c_buffer())) {
       status_ = Status(StatusCode::INTERNAL,
                        "Couldn't initialize byte buffer reader");
     }
@@ -63,7 +59,7 @@ class ProtoBufferReader : public grpc::protobuf::io::ZeroCopyInputStream {
 
   ~ProtoBufferReader() override {
     if (status_.ok()) {
-      g_core_codegen_interface->grpc_byte_buffer_reader_destroy(&reader_);
+      grpc_byte_buffer_reader_destroy(&reader_);
     }
   }
 
@@ -77,19 +73,18 @@ class ProtoBufferReader : public grpc::protobuf::io::ZeroCopyInputStream {
     if (backup_count_ > 0) {
       *data = GRPC_SLICE_START_PTR(*slice_) + GRPC_SLICE_LENGTH(*slice_) -
               backup_count_;
-      GPR_CODEGEN_ASSERT(backup_count_ <= INT_MAX);
+      GPR_ASSERT(backup_count_ <= INT_MAX);
       *size = static_cast<int>(backup_count_);
       backup_count_ = 0;
       return true;
     }
     /// Otherwise get the next slice from the byte buffer reader
-    if (!g_core_codegen_interface->grpc_byte_buffer_reader_peek(&reader_,
-                                                                &slice_)) {
+    if (!grpc_byte_buffer_reader_peek(&reader_, &slice_)) {
       return false;
     }
     *data = GRPC_SLICE_START_PTR(*slice_);
     // On win x64, int is only 32bit
-    GPR_CODEGEN_ASSERT(GRPC_SLICE_LENGTH(*slice_) <= INT_MAX);
+    GPR_ASSERT(GRPC_SLICE_LENGTH(*slice_) <= INT_MAX);
     byte_count_ += * size = static_cast<int>(GRPC_SLICE_LENGTH(*slice_));
     return true;
   }
@@ -101,7 +96,7 @@ class ProtoBufferReader : public grpc::protobuf::io::ZeroCopyInputStream {
   /// bytes that have already been returned by the last call of Next.
   /// So do the backup and have that ready for a later Next.
   void BackUp(int count) override {
-    GPR_CODEGEN_ASSERT(count <= static_cast<int>(GRPC_SLICE_LENGTH(*slice_)));
+    GPR_ASSERT(count <= static_cast<int>(GRPC_SLICE_LENGTH(*slice_)));
     backup_count_ = count;
   }
 
@@ -148,4 +143,4 @@ class ProtoBufferReader : public grpc::protobuf::io::ZeroCopyInputStream {
 
 }  // namespace grpc
 
-#endif  // GRPCPP_IMPL_CODEGEN_PROTO_BUFFER_READER_H
+#endif  // GRPCPP_SUPPORT_PROTO_BUFFER_READER_H
diff --git a/contrib/libs/grpc/include/grpcpp/impl/codegen/proto_buffer_writer.h b/contrib/libs/grpc/include/grpcpp/support/proto_buffer_writer.h
index 34730bd205..eb7b2c40b9 100644
--- a/contrib/libs/grpc/include/grpcpp/impl/codegen/proto_buffer_writer.h
+++ b/contrib/libs/grpc/include/grpcpp/support/proto_buffer_writer.h
@@ -1,43 +1,41 @@
-/*
- *
- * Copyright 2018 gRPC authors.
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
- */
-
-#ifndef GRPCPP_IMPL_CODEGEN_PROTO_BUFFER_WRITER_H
-#define GRPCPP_IMPL_CODEGEN_PROTO_BUFFER_WRITER_H
-
-// IWYU pragma: private, include <grpcpp/support/proto_buffer_writer.h>
+//
+//
+// Copyright 2018 gRPC authors.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+//
+
+#ifndef GRPCPP_SUPPORT_PROTO_BUFFER_WRITER_H
+#define GRPCPP_SUPPORT_PROTO_BUFFER_WRITER_H
 
 #include <type_traits>
 
-#include <grpc/impl/codegen/grpc_types.h>
-#include <grpc/impl/codegen/slice.h>
+#include <grpc/byte_buffer.h>
+#include <grpc/impl/grpc_types.h>
+#include <grpc/slice.h>
+#include <grpc/slice_buffer.h>
+#include <grpc/support/log.h>
 #include <grpcpp/impl/codegen/config_protobuf.h>
-#include <grpcpp/impl/codegen/core_codegen_interface.h>
-#include <grpcpp/impl/codegen/serialization_traits.h>
-#include <grpcpp/impl/codegen/status.h>
+#include <grpcpp/impl/serialization_traits.h>
 #include <grpcpp/support/byte_buffer.h>
+#include <grpcpp/support/status.h>
 
 /// This header provides an object that writes bytes directly into a
 /// grpc::ByteBuffer, via the ZeroCopyOutputStream interface
 
 namespace grpc {
 
-extern CoreCodegenInterface* g_core_codegen_interface;
-
 // Forward declaration for testing use only
 namespace internal {
 class ProtoBufferWriterPeer;
@@ -64,17 +62,16 @@ class ProtoBufferWriter : public grpc::protobuf::io::ZeroCopyOutputStream {
         total_size_(total_size),
         byte_count_(0),
         have_backup_(false) {
-    GPR_CODEGEN_ASSERT(!byte_buffer->Valid());
+    GPR_ASSERT(!byte_buffer->Valid());
     /// Create an empty raw byte buffer and look at its underlying slice buffer
-    grpc_byte_buffer* bp =
-        g_core_codegen_interface->grpc_raw_byte_buffer_create(nullptr, 0);
+    grpc_byte_buffer* bp = grpc_raw_byte_buffer_create(nullptr, 0);
     byte_buffer->set_buffer(bp);
     slice_buffer_ = &bp->data.raw.slice_buffer;
   }
 
   ~ProtoBufferWriter() override {
     if (have_backup_) {
-      g_core_codegen_interface->grpc_slice_unref(backup_slice_);
+      grpc_slice_unref(backup_slice_);
     }
   }
 
@@ -82,7 +79,7 @@ class ProtoBufferWriter : public grpc::protobuf::io::ZeroCopyOutputStream {
   /// safe for the caller to write from data[0, size - 1].
   bool Next(void** data, int* size) override {
     // Protobuf should not ask for more memory than total_size_.
-    GPR_CODEGEN_ASSERT(byte_count_ < total_size_);
+    GPR_ASSERT(byte_count_ < total_size_);
     // 1. Use the remaining backup slice if we have one
     // 2. Otherwise allocate a slice, up to the remaining length needed
     //    or our maximum allocation size
@@ -101,21 +98,19 @@ class ProtoBufferWriter : public grpc::protobuf::io::ZeroCopyOutputStream {
       // But make sure the allocated slice is not inlined.
       size_t allocate_length =
           remain > static_cast<size_t>(block_size_) ? block_size_ : remain;
-      slice_ = g_core_codegen_interface->grpc_slice_malloc(
-          allocate_length > GRPC_SLICE_INLINED_SIZE
-              ? allocate_length
-              : GRPC_SLICE_INLINED_SIZE + 1);
+      slice_ = grpc_slice_malloc(allocate_length > GRPC_SLICE_INLINED_SIZE
+                                     ? allocate_length
+                                     : GRPC_SLICE_INLINED_SIZE + 1);
     }
     *data = GRPC_SLICE_START_PTR(slice_);
     // On win x64, int is only 32bit
-    GPR_CODEGEN_ASSERT(GRPC_SLICE_LENGTH(slice_) <= INT_MAX);
+    GPR_ASSERT(GRPC_SLICE_LENGTH(slice_) <= INT_MAX);
     byte_count_ += * size = static_cast<int>(GRPC_SLICE_LENGTH(slice_));
     // Using grpc_slice_buffer_add could modify slice_ and merge it with the
     // previous slice. Therefore, use grpc_slice_buffer_add_indexed method to
     // ensure the slice gets added at a separate index. It can then be kept
     // around and popped later in the BackUp function.
-    g_core_codegen_interface->grpc_slice_buffer_add_indexed(slice_buffer_,
-                                                            slice_);
+    grpc_slice_buffer_add_indexed(slice_buffer_, slice_);
     return true;
   }
 
@@ -134,14 +129,14 @@ class ProtoBufferWriter : public grpc::protobuf::io::ZeroCopyOutputStream {
     /// 2. Split it into the needed (if any) and unneeded part
     /// 3. Add the needed part back to the slice buffer
     /// 4. Mark that we still have the remaining part (for later use/unref)
-    GPR_CODEGEN_ASSERT(count <= static_cast<int>(GRPC_SLICE_LENGTH(slice_)));
-    g_core_codegen_interface->grpc_slice_buffer_pop(slice_buffer_);
+    GPR_ASSERT(count <= static_cast<int>(GRPC_SLICE_LENGTH(slice_)));
+    grpc_slice_buffer_pop(slice_buffer_);
     if (static_cast<size_t>(count) == GRPC_SLICE_LENGTH(slice_)) {
       backup_slice_ = slice_;
     } else {
-      backup_slice_ = g_core_codegen_interface->grpc_slice_split_tail(
-          &slice_, GRPC_SLICE_LENGTH(slice_) - count);
-      g_core_codegen_interface->grpc_slice_buffer_add(slice_buffer_, slice_);
+      backup_slice_ =
+          grpc_slice_split_tail(&slice_, GRPC_SLICE_LENGTH(slice_) - count);
+      grpc_slice_buffer_add(slice_buffer_, slice_);
     }
     // It's dangerous to keep an inlined grpc_slice as the backup slice, since
     // on a following Next() call, a reference will be returned to this slice
@@ -178,4 +173,4 @@ class ProtoBufferWriter : public grpc::protobuf::io::ZeroCopyOutputStream {
 
 }  // namespace grpc
 
-#endif  // GRPCPP_IMPL_CODEGEN_PROTO_BUFFER_WRITER_H
+#endif  // GRPCPP_SUPPORT_PROTO_BUFFER_WRITER_H
diff --git a/contrib/libs/grpc/include/grpcpp/support/server_callback.h b/contrib/libs/grpc/include/grpcpp/support/server_callback.h
index 1ffdce53d9..5cd4df28a3 100644
--- a/contrib/libs/grpc/include/grpcpp/support/server_callback.h
+++ b/contrib/libs/grpc/include/grpcpp/support/server_callback.h
@@ -1,24 +1,797 @@
-/*
- *
- * Copyright 2018 gRPC authors.
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
- */
+//
+//
+// Copyright 2018 gRPC authors.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+//
 
 #ifndef GRPCPP_SUPPORT_SERVER_CALLBACK_H
 #define GRPCPP_SUPPORT_SERVER_CALLBACK_H
 
-#include <grpcpp/impl/codegen/server_callback.h>  // IWYU pragma: export
+#include <atomic>
+#include <functional>
+#include <type_traits>
+
+#include <grpcpp/impl/call.h>
+#include <grpcpp/impl/call_op_set.h>
+#include <grpcpp/impl/sync.h>
+#include <grpcpp/support/callback_common.h>
+#include <grpcpp/support/config.h>
+#include <grpcpp/support/message_allocator.h>
+#include <grpcpp/support/status.h>
+
+namespace grpc {
+
+// Declare base class of all reactors as internal
+namespace internal {
+
+// Forward declarations
+template <class Request, class Response>
+class CallbackUnaryHandler;
+template <class Request, class Response>
+class CallbackClientStreamingHandler;
+template <class Request, class Response>
+class CallbackServerStreamingHandler;
+template <class Request, class Response>
+class CallbackBidiHandler;
+
+class ServerReactor {
+ public:
+  virtual ~ServerReactor() = default;
+  virtual void OnDone() = 0;
+  virtual void OnCancel() = 0;
+
+  // The following is not API. It is for internal use only and specifies whether
+  // all reactions of this Reactor can be run without an extra executor
+  // scheduling. This should only be used for internally-defined reactors with
+  // trivial reactions.
+  virtual bool InternalInlineable() { return false; }
+
+ private:
+  template <class Request, class Response>
+  friend class CallbackUnaryHandler;
+  template <class Request, class Response>
+  friend class CallbackClientStreamingHandler;
+  template <class Request, class Response>
+  friend class CallbackServerStreamingHandler;
+  template <class Request, class Response>
+  friend class CallbackBidiHandler;
+};
+
+/// The base class of ServerCallbackUnary etc.
+class ServerCallbackCall {
+ public:
+  virtual ~ServerCallbackCall() {}
+
+  // This object is responsible for tracking when it is safe to call OnDone and
+  // OnCancel. OnDone should not be called until the method handler is complete,
+  // Finish has been called, the ServerContext CompletionOp (which tracks
+  // cancellation or successful completion) has completed, and all outstanding
+  // Read/Write actions have seen their reactions. OnCancel should not be called
+  // until after the method handler is done and the RPC has completed with a
+  // cancellation. This is tracked by counting how many of these conditions have
+  // been met and calling OnCancel when none remain unmet.
+
+  // Public versions of MaybeDone: one where we don't know the reactor in
+  // advance (used for the ServerContext CompletionOp), and one for where we
+  // know the inlineability of the OnDone reaction. You should set the inline
+  // flag to true if either the Reactor is InternalInlineable() or if this
+  // callback is already being forced to run dispatched to an executor
+  // (typically because it contains additional work than just the MaybeDone).
+
+  void MaybeDone() {
+    if (GPR_UNLIKELY(Unref() == 1)) {
+      ScheduleOnDone(reactor()->InternalInlineable());
+    }
+  }
+
+  void MaybeDone(bool inline_ondone) {
+    if (GPR_UNLIKELY(Unref() == 1)) {
+      ScheduleOnDone(inline_ondone);
+    }
+  }
+
+  // Fast version called with known reactor passed in, used from derived
+  // classes, typically in non-cancel case
+  void MaybeCallOnCancel(ServerReactor* reactor) {
+    if (GPR_UNLIKELY(UnblockCancellation())) {
+      CallOnCancel(reactor);
+    }
+  }
+
+  // Slower version called from object that doesn't know the reactor a priori
+  // (such as the ServerContext CompletionOp which is formed before the
+  // reactor). This is used in cancel cases only, so it's ok to be slower and
+  // invoke a virtual function.
+  void MaybeCallOnCancel() {
+    if (GPR_UNLIKELY(UnblockCancellation())) {
+      CallOnCancel(reactor());
+    }
+  }
+
+ protected:
+  /// Increases the reference count
+  void Ref() { callbacks_outstanding_.fetch_add(1, std::memory_order_relaxed); }
+
+ private:
+  virtual ServerReactor* reactor() = 0;
+
+  // CallOnDone performs the work required at completion of the RPC: invoking
+  // the OnDone function and doing all necessary cleanup. This function is only
+  // ever invoked on a fully-Unref'fed ServerCallbackCall.
+  virtual void CallOnDone() = 0;
+
+  // If the OnDone reaction is inlineable, execute it inline. Otherwise send it
+  // to an executor.
+  void ScheduleOnDone(bool inline_ondone);
+
+  // If the OnCancel reaction is inlineable, execute it inline. Otherwise send
+  // it to an executor.
+  void CallOnCancel(ServerReactor* reactor);
+
+  // Implement the cancellation constraint counter. Return true if OnCancel
+  // should be called, false otherwise.
+  bool UnblockCancellation() {
+    return on_cancel_conditions_remaining_.fetch_sub(
+               1, std::memory_order_acq_rel) == 1;
+  }
+
+  /// Decreases the reference count and returns the previous value
+  int Unref() {
+    return callbacks_outstanding_.fetch_sub(1, std::memory_order_acq_rel);
+  }
+
+  std::atomic_int on_cancel_conditions_remaining_{2};
+  std::atomic_int callbacks_outstanding_{
+      3};  // reserve for start, Finish, and CompletionOp
+};
+
+template <class Request, class Response>
+class DefaultMessageHolder : public MessageHolder<Request, Response> {
+ public:
+  DefaultMessageHolder() {
+    this->set_request(&request_obj_);
+    this->set_response(&response_obj_);
+  }
+  void Release() override {
+    // the object is allocated in the call arena.
+    this->~DefaultMessageHolder<Request, Response>();
+  }
+
+ private:
+  Request request_obj_;
+  Response response_obj_;
+};
+
+}  // namespace internal
+
+// Forward declarations
+class ServerUnaryReactor;
+template <class Request>
+class ServerReadReactor;
+template <class Response>
+class ServerWriteReactor;
+template <class Request, class Response>
+class ServerBidiReactor;
+
+// NOTE: The actual call/stream object classes are provided as API only to
+// support mocking. There are no implementations of these class interfaces in
+// the API.
+class ServerCallbackUnary : public internal::ServerCallbackCall {
+ public:
+  ~ServerCallbackUnary() override {}
+  virtual void Finish(grpc::Status s) = 0;
+  virtual void SendInitialMetadata() = 0;
+
+ protected:
+  // Use a template rather than explicitly specifying ServerUnaryReactor to
+  // delay binding and avoid a circular forward declaration issue
+  template <class Reactor>
+  void BindReactor(Reactor* reactor) {
+    reactor->InternalBindCall(this);
+  }
+};
+
+template <class Request>
+class ServerCallbackReader : public internal::ServerCallbackCall {
+ public:
+  ~ServerCallbackReader() override {}
+  virtual void Finish(grpc::Status s) = 0;
+  virtual void SendInitialMetadata() = 0;
+  virtual void Read(Request* msg) = 0;
+
+ protected:
+  void BindReactor(ServerReadReactor<Request>* reactor) {
+    reactor->InternalBindReader(this);
+  }
+};
+
+template <class Response>
+class ServerCallbackWriter : public internal::ServerCallbackCall {
+ public:
+  ~ServerCallbackWriter() override {}
+
+  virtual void Finish(grpc::Status s) = 0;
+  virtual void SendInitialMetadata() = 0;
+  virtual void Write(const Response* msg, grpc::WriteOptions options) = 0;
+  virtual void WriteAndFinish(const Response* msg, grpc::WriteOptions options,
+                              grpc::Status s) = 0;
+
+ protected:
+  void BindReactor(ServerWriteReactor<Response>* reactor) {
+    reactor->InternalBindWriter(this);
+  }
+};
+
+template <class Request, class Response>
+class ServerCallbackReaderWriter : public internal::ServerCallbackCall {
+ public:
+  ~ServerCallbackReaderWriter() override {}
+
+  virtual void Finish(grpc::Status s) = 0;
+  virtual void SendInitialMetadata() = 0;
+  virtual void Read(Request* msg) = 0;
+  virtual void Write(const Response* msg, grpc::WriteOptions options) = 0;
+  virtual void WriteAndFinish(const Response* msg, grpc::WriteOptions options,
+                              grpc::Status s) = 0;
+
+ protected:
+  void BindReactor(ServerBidiReactor<Request, Response>* reactor) {
+    reactor->InternalBindStream(this);
+  }
+};
+
+// The following classes are the reactor interfaces that are to be implemented
+// by the user, returned as the output parameter of the method handler for a
+// callback method. Note that none of the classes are pure; all reactions have a
+// default empty reaction so that the user class only needs to override those
+// reactions that it cares about. The reaction methods will be invoked by the
+// library in response to the completion of various operations. Reactions must
+// not include blocking operations (such as blocking I/O, starting synchronous
+// RPCs, or waiting on condition variables). Reactions may be invoked
+// concurrently, except that OnDone is called after all others (assuming proper
+// API usage). The reactor may not be deleted until OnDone is called.
+
+/// \a ServerBidiReactor is the interface for a bidirectional streaming RPC.
+template <class Request, class Response>
+class ServerBidiReactor : public internal::ServerReactor {
+ public:
+  // NOTE: Initializing stream_ as a constructor initializer rather than a
+  //       default initializer because gcc-4.x requires a copy constructor for
+  //       default initializing a templated member, which isn't ok for atomic.
+  // TODO(vjpai): Switch to default constructor and default initializer when
+  //              gcc-4.x is no longer supported
+  ServerBidiReactor() : stream_(nullptr) {}
+  ~ServerBidiReactor() override = default;
+
+  /// Send any initial metadata stored in the RPC context. If not invoked,
+  /// any initial metadata will be passed along with the first Write or the
+  /// Finish (if there are no writes).
+  void StartSendInitialMetadata() Y_ABSL_LOCKS_EXCLUDED(stream_mu_) {
+    ServerCallbackReaderWriter<Request, Response>* stream =
+        stream_.load(std::memory_order_acquire);
+    if (stream == nullptr) {
+      grpc::internal::MutexLock l(&stream_mu_);
+      stream = stream_.load(std::memory_order_relaxed);
+      if (stream == nullptr) {
+        backlog_.send_initial_metadata_wanted = true;
+        return;
+      }
+    }
+    stream->SendInitialMetadata();
+  }
+
+  /// Initiate a read operation.
+  ///
+  /// \param[out] req Where to eventually store the read message. Valid when
+  ///                 the library calls OnReadDone
+  void StartRead(Request* req) Y_ABSL_LOCKS_EXCLUDED(stream_mu_) {
+    ServerCallbackReaderWriter<Request, Response>* stream =
+        stream_.load(std::memory_order_acquire);
+    if (stream == nullptr) {
+      grpc::internal::MutexLock l(&stream_mu_);
+      stream = stream_.load(std::memory_order_relaxed);
+      if (stream == nullptr) {
+        backlog_.read_wanted = req;
+        return;
+      }
+    }
+    stream->Read(req);
+  }
+
+  /// Initiate a write operation.
+  ///
+  /// \param[in] resp The message to be written. The library does not take
+  ///                 ownership but the caller must ensure that the message is
+  ///                 not deleted or modified until OnWriteDone is called.
+  void StartWrite(const Response* resp) {
+    StartWrite(resp, grpc::WriteOptions());
+  }
+
+  /// Initiate a write operation with specified options.
+  ///
+  /// \param[in] resp The message to be written. The library does not take
+  ///                 ownership but the caller must ensure that the message is
+  ///                 not deleted or modified until OnWriteDone is called.
+  /// \param[in] options The WriteOptions to use for writing this message
+  void StartWrite(const Response* resp, grpc::WriteOptions options)
+      Y_ABSL_LOCKS_EXCLUDED(stream_mu_) {
+    ServerCallbackReaderWriter<Request, Response>* stream =
+        stream_.load(std::memory_order_acquire);
+    if (stream == nullptr) {
+      grpc::internal::MutexLock l(&stream_mu_);
+      stream = stream_.load(std::memory_order_relaxed);
+      if (stream == nullptr) {
+        backlog_.write_wanted = resp;
+        backlog_.write_options_wanted = options;
+        return;
+      }
+    }
+    stream->Write(resp, options);
+  }
+
+  /// Initiate a write operation with specified options and final RPC Status,
+  /// which also causes any trailing metadata for this RPC to be sent out.
+  /// StartWriteAndFinish is like merging StartWriteLast and Finish into a
+  /// single step. A key difference, though, is that this operation doesn't have
+  /// an OnWriteDone reaction - it is considered complete only when OnDone is
+  /// available. An RPC can either have StartWriteAndFinish or Finish, but not
+  /// both.
+  ///
+  /// \param[in] resp The message to be written. The library does not take
+  ///                 ownership but the caller must ensure that the message is
+  ///                 not deleted or modified until OnDone is called.
+  /// \param[in] options The WriteOptions to use for writing this message
+  /// \param[in] s The status outcome of this RPC
+  void StartWriteAndFinish(const Response* resp, grpc::WriteOptions options,
+                           grpc::Status s) Y_ABSL_LOCKS_EXCLUDED(stream_mu_) {
+    ServerCallbackReaderWriter<Request, Response>* stream =
+        stream_.load(std::memory_order_acquire);
+    if (stream == nullptr) {
+      grpc::internal::MutexLock l(&stream_mu_);
+      stream = stream_.load(std::memory_order_relaxed);
+      if (stream == nullptr) {
+        backlog_.write_and_finish_wanted = true;
+        backlog_.write_wanted = resp;
+        backlog_.write_options_wanted = options;
+        backlog_.status_wanted = std::move(s);
+        return;
+      }
+    }
+    stream->WriteAndFinish(resp, options, std::move(s));
+  }
+
+  /// Inform system of a planned write operation with specified options, but
+  /// allow the library to schedule the actual write coalesced with the writing
+  /// of trailing metadata (which takes place on a Finish call).
+  ///
+  /// \param[in] resp The message to be written. The library does not take
+  ///                 ownership but the caller must ensure that the message is
+  ///                 not deleted or modified until OnWriteDone is called.
+  /// \param[in] options The WriteOptions to use for writing this message
+  void StartWriteLast(const Response* resp, grpc::WriteOptions options) {
+    StartWrite(resp, options.set_last_message());
+  }
+
+  /// Indicate that the stream is to be finished and the trailing metadata and
+  /// RPC status are to be sent. Every RPC MUST be finished using either Finish
+  /// or StartWriteAndFinish (but not both), even if the RPC is already
+  /// cancelled.
+  ///
+  /// \param[in] s The status outcome of this RPC
+  void Finish(grpc::Status s) Y_ABSL_LOCKS_EXCLUDED(stream_mu_) {
+    ServerCallbackReaderWriter<Request, Response>* stream =
+        stream_.load(std::memory_order_acquire);
+    if (stream == nullptr) {
+      grpc::internal::MutexLock l(&stream_mu_);
+      stream = stream_.load(std::memory_order_relaxed);
+      if (stream == nullptr) {
+        backlog_.finish_wanted = true;
+        backlog_.status_wanted = std::move(s);
+        return;
+      }
+    }
+    stream->Finish(std::move(s));
+  }
+
+  /// Notifies the application that an explicit StartSendInitialMetadata
+  /// operation completed. Not used when the sending of initial metadata
+  /// piggybacks onto the first write.
+  ///
+  /// \param[in] ok Was it successful? If false, no further write-side operation
+  ///               will succeed.
+  virtual void OnSendInitialMetadataDone(bool /*ok*/) {}
+
+  /// Notifies the application that a StartRead operation completed.
+  ///
+  /// \param[in] ok Was it successful? If false, no further read-side operation
+  ///               will succeed.
+  virtual void OnReadDone(bool /*ok*/) {}
+
+  /// Notifies the application that a StartWrite (or StartWriteLast) operation
+  /// completed.
+  ///
+  /// \param[in] ok Was it successful? If false, no further write-side operation
+  ///               will succeed.
+  virtual void OnWriteDone(bool /*ok*/) {}
+
+  /// Notifies the application that all operations associated with this RPC
+  /// have completed. This is an override (from the internal base class) but
+  /// still abstract, so derived classes MUST override it to be instantiated.
+  void OnDone() override = 0;
+
+  /// Notifies the application that this RPC has been cancelled. This is an
+  /// override (from the internal base class) but not final, so derived classes
+  /// should override it if they want to take action.
+  void OnCancel() override {}
+
+ private:
+  friend class ServerCallbackReaderWriter<Request, Response>;
+  // May be overridden by internal implementation details. This is not a public
+  // customization point.
+  virtual void InternalBindStream(
+      ServerCallbackReaderWriter<Request, Response>* stream) {
+    grpc::internal::MutexLock l(&stream_mu_);
+
+    if (GPR_UNLIKELY(backlog_.send_initial_metadata_wanted)) {
+      stream->SendInitialMetadata();
+    }
+    if (GPR_UNLIKELY(backlog_.read_wanted != nullptr)) {
+      stream->Read(backlog_.read_wanted);
+    }
+    if (GPR_UNLIKELY(backlog_.write_and_finish_wanted)) {
+      stream->WriteAndFinish(backlog_.write_wanted,
+                             std::move(backlog_.write_options_wanted),
+                             std::move(backlog_.status_wanted));
+    } else {
+      if (GPR_UNLIKELY(backlog_.write_wanted != nullptr)) {
+        stream->Write(backlog_.write_wanted,
+                      std::move(backlog_.write_options_wanted));
+      }
+      if (GPR_UNLIKELY(backlog_.finish_wanted)) {
+        stream->Finish(std::move(backlog_.status_wanted));
+      }
+    }
+    // Set stream_ last so that other functions can use it lock-free
+    stream_.store(stream, std::memory_order_release);
+  }
+
+  grpc::internal::Mutex stream_mu_;
+  // TODO(vjpai): Make stream_or_backlog_ into a std::variant or y_absl::variant
+  //              once C++17 or ABSL is supported since stream and backlog are
+  //              mutually exclusive in this class. Do likewise with the
+  //              remaining reactor classes and their backlogs as well.
+  std::atomic<ServerCallbackReaderWriter<Request, Response>*> stream_{nullptr};
+  struct PreBindBacklog {
+    bool send_initial_metadata_wanted = false;
+    bool write_and_finish_wanted = false;
+    bool finish_wanted = false;
+    Request* read_wanted = nullptr;
+    const Response* write_wanted = nullptr;
+    grpc::WriteOptions write_options_wanted;
+    grpc::Status status_wanted;
+  };
+  PreBindBacklog backlog_ Y_ABSL_GUARDED_BY(stream_mu_);
+};
+
+/// \a ServerReadReactor is the interface for a client-streaming RPC.
+template <class Request>
+class ServerReadReactor : public internal::ServerReactor {
+ public:
+  ServerReadReactor() : reader_(nullptr) {}
+  ~ServerReadReactor() override = default;
+
+  /// The following operation initiations are exactly like ServerBidiReactor.
+  void StartSendInitialMetadata() Y_ABSL_LOCKS_EXCLUDED(reader_mu_) {
+    ServerCallbackReader<Request>* reader =
+        reader_.load(std::memory_order_acquire);
+    if (reader == nullptr) {
+      grpc::internal::MutexLock l(&reader_mu_);
+      reader = reader_.load(std::memory_order_relaxed);
+      if (reader == nullptr) {
+        backlog_.send_initial_metadata_wanted = true;
+        return;
+      }
+    }
+    reader->SendInitialMetadata();
+  }
+  void StartRead(Request* req) Y_ABSL_LOCKS_EXCLUDED(reader_mu_) {
+    ServerCallbackReader<Request>* reader =
+        reader_.load(std::memory_order_acquire);
+    if (reader == nullptr) {
+      grpc::internal::MutexLock l(&reader_mu_);
+      reader = reader_.load(std::memory_order_relaxed);
+      if (reader == nullptr) {
+        backlog_.read_wanted = req;
+        return;
+      }
+    }
+    reader->Read(req);
+  }
+  void Finish(grpc::Status s) Y_ABSL_LOCKS_EXCLUDED(reader_mu_) {
+    ServerCallbackReader<Request>* reader =
+        reader_.load(std::memory_order_acquire);
+    if (reader == nullptr) {
+      grpc::internal::MutexLock l(&reader_mu_);
+      reader = reader_.load(std::memory_order_relaxed);
+      if (reader == nullptr) {
+        backlog_.finish_wanted = true;
+        backlog_.status_wanted = std::move(s);
+        return;
+      }
+    }
+    reader->Finish(std::move(s));
+  }
+
+  /// The following notifications are exactly like ServerBidiReactor.
+  virtual void OnSendInitialMetadataDone(bool /*ok*/) {}
+  virtual void OnReadDone(bool /*ok*/) {}
+  void OnDone() override = 0;
+  void OnCancel() override {}
+
+ private:
+  friend class ServerCallbackReader<Request>;
+
+  // May be overridden by internal implementation details. This is not a public
+  // customization point.
+  virtual void InternalBindReader(ServerCallbackReader<Request>* reader)
+      Y_ABSL_LOCKS_EXCLUDED(reader_mu_) {
+    grpc::internal::MutexLock l(&reader_mu_);
+
+    if (GPR_UNLIKELY(backlog_.send_initial_metadata_wanted)) {
+      reader->SendInitialMetadata();
+    }
+    if (GPR_UNLIKELY(backlog_.read_wanted != nullptr)) {
+      reader->Read(backlog_.read_wanted);
+    }
+    if (GPR_UNLIKELY(backlog_.finish_wanted)) {
+      reader->Finish(std::move(backlog_.status_wanted));
+    }
+    // Set reader_ last so that other functions can use it lock-free
+    reader_.store(reader, std::memory_order_release);
+  }
+
+  grpc::internal::Mutex reader_mu_;
+  std::atomic<ServerCallbackReader<Request>*> reader_{nullptr};
+  struct PreBindBacklog {
+    bool send_initial_metadata_wanted = false;
+    bool finish_wanted = false;
+    Request* read_wanted = nullptr;
+    grpc::Status status_wanted;
+  };
+  PreBindBacklog backlog_ Y_ABSL_GUARDED_BY(reader_mu_);
+};
+
+/// \a ServerWriteReactor is the interface for a server-streaming RPC.
+template <class Response>
+class ServerWriteReactor : public internal::ServerReactor {
+ public:
+  ServerWriteReactor() : writer_(nullptr) {}
+  ~ServerWriteReactor() override = default;
+
+  /// The following operation initiations are exactly like ServerBidiReactor.
+  void StartSendInitialMetadata() Y_ABSL_LOCKS_EXCLUDED(writer_mu_) {
+    ServerCallbackWriter<Response>* writer =
+        writer_.load(std::memory_order_acquire);
+    if (writer == nullptr) {
+      grpc::internal::MutexLock l(&writer_mu_);
+      writer = writer_.load(std::memory_order_relaxed);
+      if (writer == nullptr) {
+        backlog_.send_initial_metadata_wanted = true;
+        return;
+      }
+    }
+    writer->SendInitialMetadata();
+  }
+  void StartWrite(const Response* resp) {
+    StartWrite(resp, grpc::WriteOptions());
+  }
+  void StartWrite(const Response* resp, grpc::WriteOptions options)
+      Y_ABSL_LOCKS_EXCLUDED(writer_mu_) {
+    ServerCallbackWriter<Response>* writer =
+        writer_.load(std::memory_order_acquire);
+    if (writer == nullptr) {
+      grpc::internal::MutexLock l(&writer_mu_);
+      writer = writer_.load(std::memory_order_relaxed);
+      if (writer == nullptr) {
+        backlog_.write_wanted = resp;
+        backlog_.write_options_wanted = options;
+        return;
+      }
+    }
+    writer->Write(resp, options);
+  }
+  void StartWriteAndFinish(const Response* resp, grpc::WriteOptions options,
+                           grpc::Status s) Y_ABSL_LOCKS_EXCLUDED(writer_mu_) {
+    ServerCallbackWriter<Response>* writer =
+        writer_.load(std::memory_order_acquire);
+    if (writer == nullptr) {
+      grpc::internal::MutexLock l(&writer_mu_);
+      writer = writer_.load(std::memory_order_relaxed);
+      if (writer == nullptr) {
+        backlog_.write_and_finish_wanted = true;
+        backlog_.write_wanted = resp;
+        backlog_.write_options_wanted = options;
+        backlog_.status_wanted = std::move(s);
+        return;
+      }
+    }
+    writer->WriteAndFinish(resp, options, std::move(s));
+  }
+  void StartWriteLast(const Response* resp, grpc::WriteOptions options) {
+    StartWrite(resp, options.set_last_message());
+  }
+  void Finish(grpc::Status s) Y_ABSL_LOCKS_EXCLUDED(writer_mu_) {
+    ServerCallbackWriter<Response>* writer =
+        writer_.load(std::memory_order_acquire);
+    if (writer == nullptr) {
+      grpc::internal::MutexLock l(&writer_mu_);
+      writer = writer_.load(std::memory_order_relaxed);
+      if (writer == nullptr) {
+        backlog_.finish_wanted = true;
+        backlog_.status_wanted = std::move(s);
+        return;
+      }
+    }
+    writer->Finish(std::move(s));
+  }
+
+  /// The following notifications are exactly like ServerBidiReactor.
+  virtual void OnSendInitialMetadataDone(bool /*ok*/) {}
+  virtual void OnWriteDone(bool /*ok*/) {}
+  void OnDone() override = 0;
+  void OnCancel() override {}
+
+ private:
+  friend class ServerCallbackWriter<Response>;
+  // May be overridden by internal implementation details. This is not a public
+  // customization point.
+  virtual void InternalBindWriter(ServerCallbackWriter<Response>* writer)
+      Y_ABSL_LOCKS_EXCLUDED(writer_mu_) {
+    grpc::internal::MutexLock l(&writer_mu_);
+
+    if (GPR_UNLIKELY(backlog_.send_initial_metadata_wanted)) {
+      writer->SendInitialMetadata();
+    }
+    if (GPR_UNLIKELY(backlog_.write_and_finish_wanted)) {
+      writer->WriteAndFinish(backlog_.write_wanted,
+                             std::move(backlog_.write_options_wanted),
+                             std::move(backlog_.status_wanted));
+    } else {
+      if (GPR_UNLIKELY(backlog_.write_wanted != nullptr)) {
+        writer->Write(backlog_.write_wanted,
+                      std::move(backlog_.write_options_wanted));
+      }
+      if (GPR_UNLIKELY(backlog_.finish_wanted)) {
+        writer->Finish(std::move(backlog_.status_wanted));
+      }
+    }
+    // Set writer_ last so that other functions can use it lock-free
+    writer_.store(writer, std::memory_order_release);
+  }
+
+  grpc::internal::Mutex writer_mu_;
+  std::atomic<ServerCallbackWriter<Response>*> writer_{nullptr};
+  struct PreBindBacklog {
+    bool send_initial_metadata_wanted = false;
+    bool write_and_finish_wanted = false;
+    bool finish_wanted = false;
+    const Response* write_wanted = nullptr;
+    grpc::WriteOptions write_options_wanted;
+    grpc::Status status_wanted;
+  };
+  PreBindBacklog backlog_ Y_ABSL_GUARDED_BY(writer_mu_);
+};
+
+class ServerUnaryReactor : public internal::ServerReactor {
+ public:
+  ServerUnaryReactor() : call_(nullptr) {}
+  ~ServerUnaryReactor() override = default;
+
+  /// StartSendInitialMetadata is exactly like ServerBidiReactor.
+  void StartSendInitialMetadata() Y_ABSL_LOCKS_EXCLUDED(call_mu_) {
+    ServerCallbackUnary* call = call_.load(std::memory_order_acquire);
+    if (call == nullptr) {
+      grpc::internal::MutexLock l(&call_mu_);
+      call = call_.load(std::memory_order_relaxed);
+      if (call == nullptr) {
+        backlog_.send_initial_metadata_wanted = true;
+        return;
+      }
+    }
+    call->SendInitialMetadata();
+  }
+  /// Finish is similar to ServerBidiReactor except for one detail.
+  /// If the status is non-OK, any message will not be sent. Instead,
+  /// the client will only receive the status and any trailing metadata.
+  void Finish(grpc::Status s) Y_ABSL_LOCKS_EXCLUDED(call_mu_) {
+    ServerCallbackUnary* call = call_.load(std::memory_order_acquire);
+    if (call == nullptr) {
+      grpc::internal::MutexLock l(&call_mu_);
+      call = call_.load(std::memory_order_relaxed);
+      if (call == nullptr) {
+        backlog_.finish_wanted = true;
+        backlog_.status_wanted = std::move(s);
+        return;
+      }
+    }
+    call->Finish(std::move(s));
+  }
+
+  /// The following notifications are exactly like ServerBidiReactor.
+  virtual void OnSendInitialMetadataDone(bool /*ok*/) {}
+  void OnDone() override = 0;
+  void OnCancel() override {}
+
+ private:
+  friend class ServerCallbackUnary;
+  // May be overridden by internal implementation details. This is not a public
+  // customization point.
+  virtual void InternalBindCall(ServerCallbackUnary* call)
+      Y_ABSL_LOCKS_EXCLUDED(call_mu_) {
+    grpc::internal::MutexLock l(&call_mu_);
+
+    if (GPR_UNLIKELY(backlog_.send_initial_metadata_wanted)) {
+      call->SendInitialMetadata();
+    }
+    if (GPR_UNLIKELY(backlog_.finish_wanted)) {
+      call->Finish(std::move(backlog_.status_wanted));
+    }
+    // Set call_ last so that other functions can use it lock-free
+    call_.store(call, std::memory_order_release);
+  }
+
+  grpc::internal::Mutex call_mu_;
+  std::atomic<ServerCallbackUnary*> call_{nullptr};
+  struct PreBindBacklog {
+    bool send_initial_metadata_wanted = false;
+    bool finish_wanted = false;
+    grpc::Status status_wanted;
+  };
+  PreBindBacklog backlog_ Y_ABSL_GUARDED_BY(call_mu_);
+};
+
+namespace internal {
+
+template <class Base>
+class FinishOnlyReactor : public Base {
+ public:
+  explicit FinishOnlyReactor(grpc::Status s) { this->Finish(std::move(s)); }
+  void OnDone() override { this->~FinishOnlyReactor(); }
+};
+
+using UnimplementedUnaryReactor = FinishOnlyReactor<ServerUnaryReactor>;
+template <class Request>
+using UnimplementedReadReactor = FinishOnlyReactor<ServerReadReactor<Request>>;
+template <class Response>
+using UnimplementedWriteReactor =
+    FinishOnlyReactor<ServerWriteReactor<Response>>;
+template <class Request, class Response>
+using UnimplementedBidiReactor =
+    FinishOnlyReactor<ServerBidiReactor<Request, Response>>;
+
+}  // namespace internal
+
+// TODO(vjpai): Remove namespace experimental when last known users are migrated
+// off.
+namespace experimental {
+
+template <class Request, class Response>
+using ServerBidiReactor = ::grpc::ServerBidiReactor<Request, Response>;
+
+}  // namespace experimental
+
+}  // namespace grpc
 
 #endif  // GRPCPP_SUPPORT_SERVER_CALLBACK_H
diff --git a/contrib/libs/grpc/include/grpcpp/support/server_interceptor.h b/contrib/libs/grpc/include/grpcpp/support/server_interceptor.h
index ad9c7a1869..ecb4e34259 100644
--- a/contrib/libs/grpc/include/grpcpp/support/server_interceptor.h
+++ b/contrib/libs/grpc/include/grpcpp/support/server_interceptor.h
@@ -1,24 +1,140 @@
-/*
- *
- * Copyright 2015 gRPC authors.
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
- */
+//
+//
+// Copyright 2015 gRPC authors.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+//
 
 #ifndef GRPCPP_SUPPORT_SERVER_INTERCEPTOR_H
 #define GRPCPP_SUPPORT_SERVER_INTERCEPTOR_H
 
-#include <grpcpp/impl/codegen/server_interceptor.h>  // IWYU pragma: export
+#include <atomic>
+#include <vector>
+
+#include <grpc/support/log.h>
+#include <grpcpp/impl/rpc_method.h>
+#include <grpcpp/support/interceptor.h>
+#include <grpcpp/support/string_ref.h>
+
+namespace grpc {
+class ServerContextBase;
+namespace internal {
+class InterceptorBatchMethodsImpl;
+}
+
+namespace experimental {
+class ServerRpcInfo;
+
+// A factory interface for creation of server interceptors. A vector of
+// factories can be provided to ServerBuilder which will be used to create a new
+// vector of server interceptors per RPC. Server interceptor authors should
+// create a subclass of ServerInterceptorFactorInterface which creates objects
+// of their interceptors.
+class ServerInterceptorFactoryInterface {
+ public:
+  virtual ~ServerInterceptorFactoryInterface() {}
+  // Returns a pointer to an Interceptor object on successful creation, nullptr
+  // otherwise. If nullptr is returned, this server interceptor factory is
+  // ignored for the purposes of that RPC.
+  virtual Interceptor* CreateServerInterceptor(ServerRpcInfo* info) = 0;
+};
+
+/// ServerRpcInfo represents the state of a particular RPC as it
+/// appears to an interceptor. It is created and owned by the library and
+/// passed to the CreateServerInterceptor method of the application's
+/// ServerInterceptorFactoryInterface implementation
+class ServerRpcInfo {
+ public:
+  /// Type categorizes RPCs by unary or streaming type
+  enum class Type { UNARY, CLIENT_STREAMING, SERVER_STREAMING, BIDI_STREAMING };
+
+  ~ServerRpcInfo() {}
+
+  // Delete all copy and move constructors and assignments
+  ServerRpcInfo(const ServerRpcInfo&) = delete;
+  ServerRpcInfo& operator=(const ServerRpcInfo&) = delete;
+  ServerRpcInfo(ServerRpcInfo&&) = delete;
+  ServerRpcInfo& operator=(ServerRpcInfo&&) = delete;
+
+  // Getter methods
+
+  /// Return the fully-specified method name
+  const char* method() const { return method_; }
+
+  /// Return the type of the RPC (unary or a streaming flavor)
+  Type type() const { return type_; }
+
+  /// Return a pointer to the underlying ServerContext structure associated
+  /// with the RPC to support features that apply to it
+  ServerContextBase* server_context() { return ctx_; }
+
+ private:
+  static_assert(Type::UNARY ==
+                    static_cast<Type>(internal::RpcMethod::NORMAL_RPC),
+                "violated expectation about Type enum");
+  static_assert(Type::CLIENT_STREAMING ==
+                    static_cast<Type>(internal::RpcMethod::CLIENT_STREAMING),
+                "violated expectation about Type enum");
+  static_assert(Type::SERVER_STREAMING ==
+                    static_cast<Type>(internal::RpcMethod::SERVER_STREAMING),
+                "violated expectation about Type enum");
+  static_assert(Type::BIDI_STREAMING ==
+                    static_cast<Type>(internal::RpcMethod::BIDI_STREAMING),
+                "violated expectation about Type enum");
+
+  ServerRpcInfo(ServerContextBase* ctx, const char* method,
+                internal::RpcMethod::RpcType type)
+      : ctx_(ctx), method_(method), type_(static_cast<Type>(type)) {}
+
+  // Runs interceptor at pos \a pos.
+  void RunInterceptor(
+      experimental::InterceptorBatchMethods* interceptor_methods, size_t pos) {
+    GPR_ASSERT(pos < interceptors_.size());
+    interceptors_[pos]->Intercept(interceptor_methods);
+  }
+
+  void RegisterInterceptors(
+      const std::vector<
+          std::unique_ptr<experimental::ServerInterceptorFactoryInterface>>&
+          creators) {
+    for (const auto& creator : creators) {
+      auto* interceptor = creator->CreateServerInterceptor(this);
+      if (interceptor != nullptr) {
+        interceptors_.push_back(
+            std::unique_ptr<experimental::Interceptor>(interceptor));
+      }
+    }
+  }
+
+  void Ref() { ref_.fetch_add(1, std::memory_order_relaxed); }
+  void Unref() {
+    if (GPR_UNLIKELY(ref_.fetch_sub(1, std::memory_order_acq_rel) == 1)) {
+      delete this;
+    }
+  }
+
+  ServerContextBase* ctx_ = nullptr;
+  const char* method_ = nullptr;
+  const Type type_;
+  std::atomic<intptr_t> ref_{1};
+  std::vector<std::unique_ptr<experimental::Interceptor>> interceptors_;
+
+  friend class internal::InterceptorBatchMethodsImpl;
+  friend class grpc::ServerContextBase;
+};
+
+}  // namespace experimental
+}  // namespace grpc
 
 #endif  // GRPCPP_SUPPORT_SERVER_INTERCEPTOR_H
diff --git a/contrib/libs/grpc/include/grpcpp/support/slice.h b/contrib/libs/grpc/include/grpcpp/support/slice.h
index 2434983f59..bafdaba9cd 100644
--- a/contrib/libs/grpc/include/grpcpp/support/slice.h
+++ b/contrib/libs/grpc/include/grpcpp/support/slice.h
@@ -1,26 +1,142 @@
-/*
- *
- * Copyright 2015 gRPC authors.
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
- */
+//
+//
+// Copyright 2015 gRPC authors.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+//
 
 #ifndef GRPCPP_SUPPORT_SLICE_H
 #define GRPCPP_SUPPORT_SLICE_H
 
 #include <grpc/slice.h>
-#include <grpcpp/impl/codegen/slice.h>  // IWYU pragma: export
 #include <grpcpp/support/config.h>
+#include <grpcpp/support/string_ref.h>
+
+namespace grpc {
+
+/// A wrapper around \a grpc_slice.
+///
+/// A slice represents a contiguous reference counted array of bytes.
+/// It is cheap to take references to a slice, and it is cheap to create a
+/// slice pointing to a subset of another slice.
+class Slice final {
+ public:
+  /// Construct an empty slice.
+  Slice() : slice_(grpc_empty_slice()) {}
+  /// Destructor - drops one reference.
+  ~Slice() { grpc_slice_unref(slice_); }
+
+  enum AddRef { ADD_REF };
+  /// Construct a slice from \a slice, adding a reference.
+  Slice(grpc_slice slice, AddRef) : slice_(grpc_slice_ref(slice)) {}
+
+  enum StealRef { STEAL_REF };
+  /// Construct a slice from \a slice, stealing a reference.
+  Slice(grpc_slice slice, StealRef) : slice_(slice) {}
+
+  /// Allocate a slice of specified size
+  explicit Slice(size_t len) : slice_(grpc_slice_malloc(len)) {}
+
+  /// Construct a slice from a copied buffer
+  Slice(const void* buf, size_t len)
+      : slice_(grpc_slice_from_copied_buffer(reinterpret_cast<const char*>(buf),
+                                             len)) {}
+
+  /// Construct a slice from a copied string
+  // NOLINTNEXTLINE(google-explicit-constructor)
+  Slice(const TString& str)
+      : slice_(grpc_slice_from_copied_buffer(str.c_str(), str.length())) {}
+
+  enum StaticSlice { STATIC_SLICE };
+
+  /// Construct a slice from a static buffer
+  Slice(const void* buf, size_t len, StaticSlice)
+      : slice_(grpc_slice_from_static_buffer(reinterpret_cast<const char*>(buf),
+                                             len)) {}
+
+  /// Copy constructor, adds a reference.
+  Slice(const Slice& other) : slice_(grpc_slice_ref(other.slice_)) {}
+
+  /// Move constructor, steals a reference.
+  Slice(Slice&& other) noexcept : slice_(other.slice_) {
+    other.slice_ = grpc_empty_slice();
+  }
+
+  /// Assignment, reference count is unchanged.
+  Slice& operator=(Slice other) {
+    std::swap(slice_, other.slice_);
+    return *this;
+  }
+
+  /// Create a slice pointing at some data. Calls malloc to allocate a refcount
+  /// for the object, and arranges that destroy will be called with the
+  /// user data pointer passed in at destruction. Can be the same as buf or
+  /// different (e.g., if data is part of a larger structure that must be
+  /// destroyed when the data is no longer needed)
+  Slice(void* buf, size_t len, void (*destroy)(void*), void* user_data)
+      : slice_(grpc_slice_new_with_user_data(buf, len, destroy, user_data)) {}
+
+  /// Specialization of above for common case where buf == user_data
+  Slice(void* buf, size_t len, void (*destroy)(void*))
+      : Slice(buf, len, destroy, buf) {}
+
+  /// Similar to the above but has a destroy that also takes slice length
+  Slice(void* buf, size_t len, void (*destroy)(void*, size_t))
+      : slice_(grpc_slice_new_with_len(buf, len, destroy)) {}
+
+  /// Byte size.
+  size_t size() const { return GRPC_SLICE_LENGTH(slice_); }
+
+  /// Raw pointer to the beginning (first element) of the slice.
+  const uint8_t* begin() const { return GRPC_SLICE_START_PTR(slice_); }
+
+  /// Raw pointer to the end (one byte \em past the last element) of the slice.
+  const uint8_t* end() const { return GRPC_SLICE_END_PTR(slice_); }
+
+  /// Returns a substring of the `slice` as another slice.
+  Slice sub(size_t begin, size_t end) const {
+    return Slice(grpc_slice_sub(slice_, begin, end), STEAL_REF);
+  }
+
+  /// Raw C slice. Caller needs to call grpc_slice_unref when done.
+  grpc_slice c_slice() const { return grpc_slice_ref(slice_); }
+
+ private:
+  friend class ByteBuffer;
+
+  grpc_slice slice_;
+};
+
+inline grpc::string_ref StringRefFromSlice(const grpc_slice* slice) {
+  return grpc::string_ref(
+      reinterpret_cast<const char*>(GRPC_SLICE_START_PTR(*slice)),
+      GRPC_SLICE_LENGTH(*slice));
+}
+
+inline TString StringFromCopiedSlice(grpc_slice slice) {
+  return TString(reinterpret_cast<char*>(GRPC_SLICE_START_PTR(slice)),
+                     GRPC_SLICE_LENGTH(slice));
+}
+
+inline grpc_slice SliceReferencingString(const TString& str) {
+  return grpc_slice_from_static_buffer(str.data(), str.length());
+}
+
+inline grpc_slice SliceFromCopiedString(const TString& str) {
+  return grpc_slice_from_copied_buffer(str.data(), str.length());
+}
+
+}  // namespace grpc
 
 #endif  // GRPCPP_SUPPORT_SLICE_H
diff --git a/contrib/libs/grpc/include/grpcpp/support/status.h b/contrib/libs/grpc/include/grpcpp/support/status.h
index e46b46d16f..0930e642b0 100644
--- a/contrib/libs/grpc/include/grpcpp/support/status.h
+++ b/contrib/libs/grpc/include/grpcpp/support/status.h
@@ -1,24 +1,24 @@
-/*
- *
- * Copyright 2015 gRPC authors.
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
- */
+//
+//
+// Copyright 2015 gRPC authors.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+//
 
 #ifndef GRPCPP_SUPPORT_STATUS_H
 #define GRPCPP_SUPPORT_STATUS_H
 
-#include <grpcpp/impl/codegen/status.h>  // IWYU pragma: export
+#include <grpcpp/impl/status.h>  // IWYU pragma: export
 
 #endif  // GRPCPP_SUPPORT_STATUS_H
diff --git a/contrib/libs/grpc/include/grpcpp/support/status_code_enum.h b/contrib/libs/grpc/include/grpcpp/support/status_code_enum.h
new file mode 100644
index 0000000000..7110071478
--- /dev/null
+++ b/contrib/libs/grpc/include/grpcpp/support/status_code_enum.h
@@ -0,0 +1,145 @@
+//
+//
+// Copyright 2015 gRPC authors.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+//
+
+#ifndef GRPCPP_SUPPORT_STATUS_CODE_ENUM_H
+#define GRPCPP_SUPPORT_STATUS_CODE_ENUM_H
+
+// IWYU pragma: private, include <grpcpp/support/status.h>
+
+namespace grpc {
+
+enum StatusCode {
+  /// Not an error; returned on success.
+  OK = 0,
+
+  /// The operation was cancelled (typically by the caller).
+  CANCELLED = 1,
+
+  /// Unknown error. An example of where this error may be returned is if a
+  /// Status value received from another address space belongs to an error-space
+  /// that is not known in this address space. Also errors raised by APIs that
+  /// do not return enough error information may be converted to this error.
+  UNKNOWN = 2,
+
+  /// Client specified an invalid argument. Note that this differs from
+  /// FAILED_PRECONDITION. INVALID_ARGUMENT indicates arguments that are
+  /// problematic regardless of the state of the system (e.g., a malformed file
+  /// name).
+  INVALID_ARGUMENT = 3,
+
+  /// Deadline expired before operation could complete. For operations that
+  /// change the state of the system, this error may be returned even if the
+  /// operation has completed successfully. For example, a successful response
+  /// from a server could have been delayed long enough for the deadline to
+  /// expire.
+  DEADLINE_EXCEEDED = 4,
+
+  /// Some requested entity (e.g., file or directory) was not found.
+  NOT_FOUND = 5,
+
+  /// Some entity that we attempted to create (e.g., file or directory) already
+  /// exists.
+  ALREADY_EXISTS = 6,
+
+  /// The caller does not have permission to execute the specified operation.
+  /// PERMISSION_DENIED must not be used for rejections caused by exhausting
+  /// some resource (use RESOURCE_EXHAUSTED instead for those errors).
+  /// PERMISSION_DENIED must not be used if the caller can not be identified
+  /// (use UNAUTHENTICATED instead for those errors).
+  PERMISSION_DENIED = 7,
+
+  /// The request does not have valid authentication credentials for the
+  /// operation.
+  UNAUTHENTICATED = 16,
+
+  /// Some resource has been exhausted, perhaps a per-user quota, or perhaps the
+  /// entire file system is out of space.
+  RESOURCE_EXHAUSTED = 8,
+
+  /// Operation was rejected because the system is not in a state required for
+  /// the operation's execution. For example, directory to be deleted may be
+  /// non-empty, an rmdir operation is applied to a non-directory, etc.
+  ///
+  /// A litmus test that may help a service implementor in deciding
+  /// between FAILED_PRECONDITION, ABORTED, and UNAVAILABLE:
+  ///  (a) Use UNAVAILABLE if the client can retry just the failing call.
+  ///  (b) Use ABORTED if the client should retry at a higher-level
+  ///      (e.g., restarting a read-modify-write sequence).
+  ///  (c) Use FAILED_PRECONDITION if the client should not retry until
+  ///      the system state has been explicitly fixed. E.g., if an "rmdir"
+  ///      fails because the directory is non-empty, FAILED_PRECONDITION
+  ///      should be returned since the client should not retry unless
+  ///      they have first fixed up the directory by deleting files from it.
+  ///  (d) Use FAILED_PRECONDITION if the client performs conditional
+  ///      REST Get/Update/Delete on a resource and the resource on the
+  ///      server does not match the condition. E.g., conflicting
+  ///      read-modify-write on the same resource.
+  FAILED_PRECONDITION = 9,
+
+  /// The operation was aborted, typically due to a concurrency issue like
+  /// sequencer check failures, transaction aborts, etc.
+  ///
+  /// See litmus test above for deciding between FAILED_PRECONDITION, ABORTED,
+  /// and UNAVAILABLE.
+  ABORTED = 10,
+
+  /// Operation was attempted past the valid range. E.g., seeking or reading
+  /// past end of file.
+  ///
+  /// Unlike INVALID_ARGUMENT, this error indicates a problem that may be fixed
+  /// if the system state changes. For example, a 32-bit file system will
+  /// generate INVALID_ARGUMENT if asked to read at an offset that is not in the
+  /// range [0,2^32-1], but it will generate OUT_OF_RANGE if asked to read from
+  /// an offset past the current file size.
+  ///
+  /// There is a fair bit of overlap between FAILED_PRECONDITION and
+  /// OUT_OF_RANGE. We recommend using OUT_OF_RANGE (the more specific error)
+  /// when it applies so that callers who are iterating through a space can
+  /// easily look for an OUT_OF_RANGE error to detect when they are done.
+  OUT_OF_RANGE = 11,
+
+  /// Operation is not implemented or not supported/enabled in this service.
+  UNIMPLEMENTED = 12,
+
+  /// Internal errors. Means some invariants expected by underlying System has
+  /// been broken. If you see one of these errors, Something is very broken.
+  INTERNAL = 13,
+
+  /// The service is currently unavailable. This is a most likely a transient
+  /// condition and may be corrected by retrying with a backoff. Note that it is
+  /// not always safe to retry non-idempotent operations.
+  ///
+  /// \warning Although data MIGHT not have been transmitted when this
+  /// status occurs, there is NOT A GUARANTEE that the server has not seen
+  /// anything. So in general it is unsafe to retry on this status code
+  /// if the call is non-idempotent.
+  ///
+  /// See litmus test above for deciding between FAILED_PRECONDITION, ABORTED,
+  /// and UNAVAILABLE.
+  UNAVAILABLE = 14,
+
+  /// Unrecoverable data loss or corruption.
+  DATA_LOSS = 15,
+
+  /// Force users to include a default branch:
+  DO_NOT_USE = -1
+};
+
+}  // namespace grpc
+
+#endif  // GRPCPP_SUPPORT_STATUS_CODE_ENUM_H
diff --git a/contrib/libs/grpc/include/grpcpp/support/string_ref.h b/contrib/libs/grpc/include/grpcpp/support/string_ref.h
index 6cf82bedf6..9ecff4a6b3 100644
--- a/contrib/libs/grpc/include/grpcpp/support/string_ref.h
+++ b/contrib/libs/grpc/include/grpcpp/support/string_ref.h
@@ -1,24 +1,152 @@
-/*
- *
- * Copyright 2015 gRPC authors.
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
- */
+//
+//
+// Copyright 2015 gRPC authors.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+//
 
 #ifndef GRPCPP_SUPPORT_STRING_REF_H
 #define GRPCPP_SUPPORT_STRING_REF_H
 
-#include <grpcpp/impl/codegen/string_ref.h>  // IWYU pragma: export
+#include <string.h>
+
+#include <algorithm>
+#include <iosfwd>
+#include <iostream>
+#include <iterator>
+
+#include <grpcpp/support/config.h>
+
+#include <util/stream/output.h>
+
+namespace grpc {
+
+/// This class is a non owning reference to a string.
+///
+/// It should be a strict subset of the upcoming std::string_ref.
+///
+/// \see http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2012/n3442.html
+///
+/// The constexpr is dropped or replaced with const for legacy compiler
+/// compatibility.
+class string_ref {
+ public:
+  /// types
+  typedef const char* const_iterator;
+  typedef std::reverse_iterator<const_iterator> const_reverse_iterator;
+
+  /// constants
+  const static size_t npos;
+
+  /// construct/copy.
+  string_ref() : data_(nullptr), length_(0) {}
+  string_ref(const string_ref& other)
+      : data_(other.data_), length_(other.length_) {}
+  // NOLINTNEXTLINE(bugprone-unhandled-self-assignment)
+  string_ref& operator=(const string_ref& rhs) {
+    data_ = rhs.data_;
+    length_ = rhs.length_;
+    return *this;
+  }
+
+  // NOLINTNEXTLINE(google-explicit-constructor)
+  string_ref(const char* s) : data_(s), length_(strlen(s)) {}
+  string_ref(const char* s, size_t l) : data_(s), length_(l) {}
+  // NOLINTNEXTLINE(google-explicit-constructor)
+  string_ref(const TString& s) : data_(s.data()), length_(s.length()) {}
+
+  /// iterators
+  const_iterator begin() const { return data_; }
+  const_iterator end() const { return data_ + length_; }
+  const_iterator cbegin() const { return data_; }
+  const_iterator cend() const { return data_ + length_; }
+  const_reverse_iterator rbegin() const {
+    return const_reverse_iterator(end());
+  }
+  const_reverse_iterator rend() const {
+    return const_reverse_iterator(begin());
+  }
+  const_reverse_iterator crbegin() const {
+    return const_reverse_iterator(end());
+  }
+  const_reverse_iterator crend() const {
+    return const_reverse_iterator(begin());
+  }
+
+  /// capacity
+  size_t size() const { return length_; }
+  size_t length() const { return length_; }
+  size_t max_size() const { return length_; }
+  bool empty() const { return length_ == 0; }
+
+  /// element access
+  const char* data() const { return data_; }
+
+  /// string operations
+  int compare(string_ref x) const {
+    size_t min_size = length_ < x.length_ ? length_ : x.length_;
+    int r = memcmp(data_, x.data_, min_size);
+    if (r < 0) return -1;
+    if (r > 0) return 1;
+    if (length_ < x.length_) return -1;
+    if (length_ > x.length_) return 1;
+    return 0;
+  }
+
+  bool starts_with(string_ref x) const {
+    return length_ >= x.length_ && (memcmp(data_, x.data_, x.length_) == 0);
+  }
+
+  bool ends_with(string_ref x) const {
+    return length_ >= x.length_ &&
+           (memcmp(data_ + (length_ - x.length_), x.data_, x.length_) == 0);
+  }
+
+  size_t find(string_ref s) const {
+    auto it = std::search(cbegin(), cend(), s.cbegin(), s.cend());
+    return it == cend() ? npos : std::distance(cbegin(), it);
+  }
+
+  size_t find(char c) const {
+    auto it = std::find(cbegin(), cend(), c);
+    return it == cend() ? npos : std::distance(cbegin(), it);
+  }
+
+  string_ref substr(size_t pos, size_t n = npos) const {
+    if (pos > length_) pos = length_;
+    if (n > (length_ - pos)) n = length_ - pos;
+    return string_ref(data_ + pos, n);
+  }
+
+ private:
+  const char* data_;
+  size_t length_;
+};
+
+/// Comparison operators
+inline bool operator==(string_ref x, string_ref y) { return x.compare(y) == 0; }
+inline bool operator!=(string_ref x, string_ref y) { return x.compare(y) != 0; }
+inline bool operator<(string_ref x, string_ref y) { return x.compare(y) < 0; }
+inline bool operator<=(string_ref x, string_ref y) { return x.compare(y) <= 0; }
+inline bool operator>(string_ref x, string_ref y) { return x.compare(y) > 0; }
+inline bool operator>=(string_ref x, string_ref y) { return x.compare(y) >= 0; }
+
+inline IOutputStream& operator<<(IOutputStream& out, const string_ref& string) {
+  TString t(string.begin(), string.end());
+  return out << t;
+}
+
+}  // namespace grpc
 
 #endif  // GRPCPP_SUPPORT_STRING_REF_H
diff --git a/contrib/libs/grpc/include/grpcpp/support/stub_options.h b/contrib/libs/grpc/include/grpcpp/support/stub_options.h
new file mode 100644
index 0000000000..4b62f6a9d8
--- /dev/null
+++ b/contrib/libs/grpc/include/grpcpp/support/stub_options.h
@@ -0,0 +1,42 @@
+//
+//
+// Copyright 2015 gRPC authors.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+//
+
+#ifndef GRPCPP_SUPPORT_STUB_OPTIONS_H
+#define GRPCPP_SUPPORT_STUB_OPTIONS_H
+
+namespace grpc {
+
+/// Useful interface for generated stubs
+class StubOptions {
+ public:
+  StubOptions() = default;
+  explicit StubOptions(const char* suffix_for_stats)
+      : suffix_for_stats_(suffix_for_stats) {}
+
+  void set_suffix_for_stats(const char* suffix_for_stats) {
+    suffix_for_stats_ = suffix_for_stats;
+  }
+  const char* suffix_for_stats() const { return suffix_for_stats_; }
+
+ private:
+  const char* suffix_for_stats_ = nullptr;
+};
+
+}  // namespace grpc
+
+#endif  // GRPCPP_SUPPORT_STUB_OPTIONS_H
diff --git a/contrib/libs/grpc/include/grpcpp/support/sync_stream.h b/contrib/libs/grpc/include/grpcpp/support/sync_stream.h
index 78a348de75..ce583f6ed7 100644
--- a/contrib/libs/grpc/include/grpcpp/support/sync_stream.h
+++ b/contrib/libs/grpc/include/grpcpp/support/sync_stream.h
@@ -1,24 +1,949 @@
-/*
- *
- * Copyright 2015 gRPC authors.
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
- */
+//
+//
+// Copyright 2015 gRPC authors.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+//
 
 #ifndef GRPCPP_SUPPORT_SYNC_STREAM_H
 #define GRPCPP_SUPPORT_SYNC_STREAM_H
 
-#include <grpcpp/impl/codegen/sync_stream.h>  // IWYU pragma: export
+#include <grpc/support/log.h>
+#include <grpcpp/client_context.h>
+#include <grpcpp/completion_queue.h>
+#include <grpcpp/impl/call.h>
+#include <grpcpp/impl/codegen/channel_interface.h>
+#include <grpcpp/impl/service_type.h>
+#include <grpcpp/server_context.h>
+#include <grpcpp/support/status.h>
+
+namespace grpc {
+
+namespace internal {
+/// Common interface for all synchronous client side streaming.
+class ClientStreamingInterface {
+ public:
+  virtual ~ClientStreamingInterface() {}
+
+  /// Block waiting until the stream finishes and a final status of the call is
+  /// available.
+  ///
+  /// It is appropriate to call this method exactly once when both:
+  ///   * the calling code (client-side) has no more message to send
+  ///     (this can be declared implicitly by calling this method, or
+  ///     explicitly through an earlier call to <i>WritesDone</i> method of the
+  ///     class in use, e.g. \a ClientWriterInterface::WritesDone or
+  ///     \a ClientReaderWriterInterface::WritesDone).
+  ///   * there are no more messages to be received from the server (which can
+  ///     be known implicitly, or explicitly from an earlier call to \a
+  ///     ReaderInterface::Read that returned "false").
+  ///
+  /// This function will return either:
+  /// - when all incoming messages have been read and the server has
+  ///   returned status.
+  /// - when the server has returned a non-OK status.
+  /// - OR when the call failed for some reason and the library generated a
+  ///   status.
+  ///
+  /// Return values:
+  ///   - \a Status contains the status code, message and details for the call
+  ///   - the \a ClientContext associated with this call is updated with
+  ///     possible trailing metadata sent from the server.
+  virtual grpc::Status Finish() = 0;
+};
+
+/// Common interface for all synchronous server side streaming.
+class ServerStreamingInterface {
+ public:
+  virtual ~ServerStreamingInterface() {}
+
+  /// Block to send initial metadata to client.
+  /// This call is optional, but if it is used, it cannot be used concurrently
+  /// with or after the \a Finish method.
+  ///
+  /// The initial metadata that will be sent to the client will be
+  /// taken from the \a ServerContext associated with the call.
+  virtual void SendInitialMetadata() = 0;
+};
+
+/// An interface that yields a sequence of messages of type \a R.
+template <class R>
+class ReaderInterface {
+ public:
+  virtual ~ReaderInterface() {}
+
+  /// Get an upper bound on the next message size available for reading on this
+  /// stream.
+  virtual bool NextMessageSize(uint32_t* sz) = 0;
+
+  /// Block to read a message and parse to \a msg. Returns \a true on success.
+  /// This is thread-safe with respect to \a Write or \WritesDone methods on
+  /// the same stream. It should not be called concurrently with another \a
+  /// Read on the same stream as the order of delivery will not be defined.
+  ///
+  /// \param[out] msg The read message.
+  ///
+  /// \return \a false when there will be no more incoming messages, either
+  /// because the other side has called \a WritesDone() or the stream has failed
+  /// (or been cancelled).
+  virtual bool Read(R* msg) = 0;
+};
+
+/// An interface that can be fed a sequence of messages of type \a W.
+template <class W>
+class WriterInterface {
+ public:
+  virtual ~WriterInterface() {}
+
+  /// Block to write \a msg to the stream with WriteOptions \a options.
+  /// This is thread-safe with respect to \a ReaderInterface::Read
+  ///
+  /// \param msg The message to be written to the stream.
+  /// \param options The WriteOptions affecting the write operation.
+  ///
+  /// \return \a true on success, \a false when the stream has been closed.
+  virtual bool Write(const W& msg, grpc::WriteOptions options) = 0;
+
+  /// Block to write \a msg to the stream with default write options.
+  /// This is thread-safe with respect to \a ReaderInterface::Read
+  ///
+  /// \param msg The message to be written to the stream.
+  ///
+  /// \return \a true on success, \a false when the stream has been closed.
+  inline bool Write(const W& msg) { return Write(msg, grpc::WriteOptions()); }
+
+  /// Write \a msg and coalesce it with the writing of trailing metadata, using
+  /// WriteOptions \a options.
+  ///
+  /// For client, WriteLast is equivalent of performing Write and WritesDone in
+  /// a single step. \a msg and trailing metadata are coalesced and sent on wire
+  /// by calling this function. For server, WriteLast buffers the \a msg.
+  /// The writing of \a msg is held until the service handler returns,
+  /// where \a msg and trailing metadata are coalesced and sent on wire.
+  /// Note that WriteLast can only buffer \a msg up to the flow control window
+  /// size. If \a msg size is larger than the window size, it will be sent on
+  /// wire without buffering.
+  ///
+  /// \param[in] msg The message to be written to the stream.
+  /// \param[in] options The WriteOptions to be used to write this message.
+  void WriteLast(const W& msg, grpc::WriteOptions options) {
+    Write(msg, options.set_last_message());
+  }
+};
+
+}  // namespace internal
+
+/// Client-side interface for streaming reads of message of type \a R.
+template <class R>
+class ClientReaderInterface : public internal::ClientStreamingInterface,
+                              public internal::ReaderInterface<R> {
+ public:
+  /// Block to wait for initial metadata from server. The received metadata
+  /// can only be accessed after this call returns. Should only be called before
+  /// the first read. Calling this method is optional, and if it is not called
+  /// the metadata will be available in ClientContext after the first read.
+  virtual void WaitForInitialMetadata() = 0;
+};
+
+namespace internal {
+template <class R>
+class ClientReaderFactory {
+ public:
+  template <class W>
+  static ClientReader<R>* Create(grpc::ChannelInterface* channel,
+                                 const grpc::internal::RpcMethod& method,
+                                 grpc::ClientContext* context,
+                                 const W& request) {
+    return new ClientReader<R>(channel, method, context, request);
+  }
+};
+}  // namespace internal
+
+/// Synchronous (blocking) client-side API for doing server-streaming RPCs,
+/// where the stream of messages coming from the server has messages
+/// of type \a R.
+template <class R>
+class ClientReader final : public ClientReaderInterface<R> {
+ public:
+  /// See the \a ClientStreamingInterface.WaitForInitialMetadata method for
+  /// semantics.
+  ///
+  //  Side effect:
+  ///   Once complete, the initial metadata read from
+  ///   the server will be accessible through the \a ClientContext used to
+  ///   construct this object.
+  void WaitForInitialMetadata() override {
+    GPR_ASSERT(!context_->initial_metadata_received_);
+
+    grpc::internal::CallOpSet<grpc::internal::CallOpRecvInitialMetadata> ops;
+    ops.RecvInitialMetadata(context_);
+    call_.PerformOps(&ops);
+    cq_.Pluck(&ops);  /// status ignored
+  }
+
+  bool NextMessageSize(uint32_t* sz) override {
+    int result = call_.max_receive_message_size();
+    *sz = (result > 0) ? result : UINT32_MAX;
+    return true;
+  }
+
+  /// See the \a ReaderInterface.Read method for semantics.
+  /// Side effect:
+  ///   This also receives initial metadata from the server, if not
+  ///   already received (if initial metadata is received, it can be then
+  ///   accessed through the \a ClientContext associated with this call).
+  bool Read(R* msg) override {
+    grpc::internal::CallOpSet<grpc::internal::CallOpRecvInitialMetadata,
+                              grpc::internal::CallOpRecvMessage<R>>
+        ops;
+    if (!context_->initial_metadata_received_) {
+      ops.RecvInitialMetadata(context_);
+    }
+    ops.RecvMessage(msg);
+    call_.PerformOps(&ops);
+    return cq_.Pluck(&ops) && ops.got_message;
+  }
+
+  /// See the \a ClientStreamingInterface.Finish method for semantics.
+  ///
+  /// Side effect:
+  ///   The \a ClientContext associated with this call is updated with
+  ///   possible metadata received from the server.
+  grpc::Status Finish() override {
+    grpc::internal::CallOpSet<grpc::internal::CallOpRecvInitialMetadata,
+                              grpc::internal::CallOpClientRecvStatus>
+        ops;
+    if (!context_->initial_metadata_received_) {
+      ops.RecvInitialMetadata(context_);
+    }
+    grpc::Status status;
+    ops.ClientRecvStatus(context_, &status);
+    call_.PerformOps(&ops);
+    GPR_ASSERT(cq_.Pluck(&ops));
+    return status;
+  }
+
+ private:
+  friend class internal::ClientReaderFactory<R>;
+  grpc::ClientContext* context_;
+  grpc::CompletionQueue cq_;
+  grpc::internal::Call call_;
+
+  /// Block to create a stream and write the initial metadata and \a request
+  /// out. Note that \a context will be used to fill in custom initial
+  /// metadata used to send to the server when starting the call.
+  template <class W>
+  ClientReader(grpc::ChannelInterface* channel,
+               const grpc::internal::RpcMethod& method,
+               grpc::ClientContext* context, const W& request)
+      : context_(context),
+        cq_(grpc_completion_queue_attributes{
+            GRPC_CQ_CURRENT_VERSION, GRPC_CQ_PLUCK, GRPC_CQ_DEFAULT_POLLING,
+            nullptr}),  // Pluckable cq
+        call_(channel->CreateCall(method, context, &cq_)) {
+    grpc::internal::CallOpSet<grpc::internal::CallOpSendInitialMetadata,
+                              grpc::internal::CallOpSendMessage,
+                              grpc::internal::CallOpClientSendClose>
+        ops;
+    ops.SendInitialMetadata(&context->send_initial_metadata_,
+                            context->initial_metadata_flags());
+    // TODO(ctiller): don't assert
+    GPR_ASSERT(ops.SendMessagePtr(&request).ok());
+    ops.ClientSendClose();
+    call_.PerformOps(&ops);
+    cq_.Pluck(&ops);
+  }
+};
+
+/// Client-side interface for streaming writes of message type \a W.
+template <class W>
+class ClientWriterInterface : public internal::ClientStreamingInterface,
+                              public internal::WriterInterface<W> {
+ public:
+  /// Half close writing from the client. (signal that the stream of messages
+  /// coming from the client is complete).
+  /// Blocks until currently-pending writes are completed.
+  /// Thread safe with respect to \a ReaderInterface::Read operations only
+  ///
+  /// \return Whether the writes were successful.
+  virtual bool WritesDone() = 0;
+};
+
+namespace internal {
+template <class W>
+class ClientWriterFactory {
+ public:
+  template <class R>
+  static ClientWriter<W>* Create(grpc::ChannelInterface* channel,
+                                 const grpc::internal::RpcMethod& method,
+                                 grpc::ClientContext* context, R* response) {
+    return new ClientWriter<W>(channel, method, context, response);
+  }
+};
+}  // namespace internal
+
+/// Synchronous (blocking) client-side API for doing client-streaming RPCs,
+/// where the outgoing message stream coming from the client has messages of
+/// type \a W.
+template <class W>
+class ClientWriter : public ClientWriterInterface<W> {
+ public:
+  /// See the \a ClientStreamingInterface.WaitForInitialMetadata method for
+  /// semantics.
+  ///
+  //  Side effect:
+  ///   Once complete, the initial metadata read from the server will be
+  ///   accessible through the \a ClientContext used to construct this object.
+  void WaitForInitialMetadata() {
+    GPR_ASSERT(!context_->initial_metadata_received_);
+
+    grpc::internal::CallOpSet<grpc::internal::CallOpRecvInitialMetadata> ops;
+    ops.RecvInitialMetadata(context_);
+    call_.PerformOps(&ops);
+    cq_.Pluck(&ops);  // status ignored
+  }
+
+  /// See the WriterInterface.Write(const W& msg, WriteOptions options) method
+  /// for semantics.
+  ///
+  /// Side effect:
+  ///   Also sends initial metadata if not already sent (using the
+  ///   \a ClientContext associated with this call).
+  using internal::WriterInterface<W>::Write;
+  bool Write(const W& msg, grpc::WriteOptions options) override {
+    grpc::internal::CallOpSet<grpc::internal::CallOpSendInitialMetadata,
+                              grpc::internal::CallOpSendMessage,
+                              grpc::internal::CallOpClientSendClose>
+        ops;
+
+    if (options.is_last_message()) {
+      options.set_buffer_hint();
+      ops.ClientSendClose();
+    }
+    if (context_->initial_metadata_corked_) {
+      ops.SendInitialMetadata(&context_->send_initial_metadata_,
+                              context_->initial_metadata_flags());
+      context_->set_initial_metadata_corked(false);
+    }
+    if (!ops.SendMessagePtr(&msg, options).ok()) {
+      return false;
+    }
+
+    call_.PerformOps(&ops);
+    return cq_.Pluck(&ops);
+  }
+
+  bool WritesDone() override {
+    grpc::internal::CallOpSet<grpc::internal::CallOpClientSendClose> ops;
+    ops.ClientSendClose();
+    call_.PerformOps(&ops);
+    return cq_.Pluck(&ops);
+  }
+
+  /// See the ClientStreamingInterface.Finish method for semantics.
+  /// Side effects:
+  ///   - Also receives initial metadata if not already received.
+  ///   - Attempts to fill in the \a response parameter passed
+  ///     to the constructor of this instance with the response
+  ///     message from the server.
+  grpc::Status Finish() override {
+    grpc::Status status;
+    if (!context_->initial_metadata_received_) {
+      finish_ops_.RecvInitialMetadata(context_);
+    }
+    finish_ops_.ClientRecvStatus(context_, &status);
+    call_.PerformOps(&finish_ops_);
+    GPR_ASSERT(cq_.Pluck(&finish_ops_));
+    return status;
+  }
+
+ private:
+  friend class internal::ClientWriterFactory<W>;
+
+  /// Block to create a stream (i.e. send request headers and other initial
+  /// metadata to the server). Note that \a context will be used to fill
+  /// in custom initial metadata. \a response will be filled in with the
+  /// single expected response message from the server upon a successful
+  /// call to the \a Finish method of this instance.
+  template <class R>
+  ClientWriter(grpc::ChannelInterface* channel,
+               const grpc::internal::RpcMethod& method,
+               grpc::ClientContext* context, R* response)
+      : context_(context),
+        cq_(grpc_completion_queue_attributes{
+            GRPC_CQ_CURRENT_VERSION, GRPC_CQ_PLUCK, GRPC_CQ_DEFAULT_POLLING,
+            nullptr}),  // Pluckable cq
+        call_(channel->CreateCall(method, context, &cq_)) {
+    finish_ops_.RecvMessage(response);
+    finish_ops_.AllowNoMessage();
+
+    if (!context_->initial_metadata_corked_) {
+      grpc::internal::CallOpSet<grpc::internal::CallOpSendInitialMetadata> ops;
+      ops.SendInitialMetadata(&context->send_initial_metadata_,
+                              context->initial_metadata_flags());
+      call_.PerformOps(&ops);
+      cq_.Pluck(&ops);
+    }
+  }
+
+  grpc::ClientContext* context_;
+  grpc::internal::CallOpSet<grpc::internal::CallOpRecvInitialMetadata,
+                            grpc::internal::CallOpGenericRecvMessage,
+                            grpc::internal::CallOpClientRecvStatus>
+      finish_ops_;
+  grpc::CompletionQueue cq_;
+  grpc::internal::Call call_;
+};
+
+/// Client-side interface for bi-directional streaming with
+/// client-to-server stream messages of type \a W and
+/// server-to-client stream messages of type \a R.
+template <class W, class R>
+class ClientReaderWriterInterface : public internal::ClientStreamingInterface,
+                                    public internal::WriterInterface<W>,
+                                    public internal::ReaderInterface<R> {
+ public:
+  /// Block to wait for initial metadata from server. The received metadata
+  /// can only be accessed after this call returns. Should only be called before
+  /// the first read. Calling this method is optional, and if it is not called
+  /// the metadata will be available in ClientContext after the first read.
+  virtual void WaitForInitialMetadata() = 0;
+
+  /// Half close writing from the client. (signal that the stream of messages
+  /// coming from the client is complete).
+  /// Blocks until currently-pending writes are completed.
+  /// Thread-safe with respect to \a ReaderInterface::Read
+  ///
+  /// \return Whether the writes were successful.
+  virtual bool WritesDone() = 0;
+};
+
+namespace internal {
+template <class W, class R>
+class ClientReaderWriterFactory {
+ public:
+  static ClientReaderWriter<W, R>* Create(
+      grpc::ChannelInterface* channel, const grpc::internal::RpcMethod& method,
+      grpc::ClientContext* context) {
+    return new ClientReaderWriter<W, R>(channel, method, context);
+  }
+};
+}  // namespace internal
+
+/// Synchronous (blocking) client-side API for bi-directional streaming RPCs,
+/// where the outgoing message stream coming from the client has messages of
+/// type \a W, and the incoming messages stream coming from the server has
+/// messages of type \a R.
+template <class W, class R>
+class ClientReaderWriter final : public ClientReaderWriterInterface<W, R> {
+ public:
+  /// Block waiting to read initial metadata from the server.
+  /// This call is optional, but if it is used, it cannot be used concurrently
+  /// with or after the \a Finish method.
+  ///
+  /// Once complete, the initial metadata read from the server will be
+  /// accessible through the \a ClientContext used to construct this object.
+  void WaitForInitialMetadata() override {
+    GPR_ASSERT(!context_->initial_metadata_received_);
+
+    grpc::internal::CallOpSet<grpc::internal::CallOpRecvInitialMetadata> ops;
+    ops.RecvInitialMetadata(context_);
+    call_.PerformOps(&ops);
+    cq_.Pluck(&ops);  // status ignored
+  }
+
+  bool NextMessageSize(uint32_t* sz) override {
+    int result = call_.max_receive_message_size();
+    *sz = (result > 0) ? result : UINT32_MAX;
+    return true;
+  }
+
+  /// See the \a ReaderInterface.Read method for semantics.
+  /// Side effect:
+  ///   Also receives initial metadata if not already received (updates the \a
+  ///   ClientContext associated with this call in that case).
+  bool Read(R* msg) override {
+    grpc::internal::CallOpSet<grpc::internal::CallOpRecvInitialMetadata,
+                              grpc::internal::CallOpRecvMessage<R>>
+        ops;
+    if (!context_->initial_metadata_received_) {
+      ops.RecvInitialMetadata(context_);
+    }
+    ops.RecvMessage(msg);
+    call_.PerformOps(&ops);
+    return cq_.Pluck(&ops) && ops.got_message;
+  }
+
+  /// See the \a WriterInterface.Write method for semantics.
+  ///
+  /// Side effect:
+  ///   Also sends initial metadata if not already sent (using the
+  ///   \a ClientContext associated with this call to fill in values).
+  using internal::WriterInterface<W>::Write;
+  bool Write(const W& msg, grpc::WriteOptions options) override {
+    grpc::internal::CallOpSet<grpc::internal::CallOpSendInitialMetadata,
+                              grpc::internal::CallOpSendMessage,
+                              grpc::internal::CallOpClientSendClose>
+        ops;
+
+    if (options.is_last_message()) {
+      options.set_buffer_hint();
+      ops.ClientSendClose();
+    }
+    if (context_->initial_metadata_corked_) {
+      ops.SendInitialMetadata(&context_->send_initial_metadata_,
+                              context_->initial_metadata_flags());
+      context_->set_initial_metadata_corked(false);
+    }
+    if (!ops.SendMessagePtr(&msg, options).ok()) {
+      return false;
+    }
+
+    call_.PerformOps(&ops);
+    return cq_.Pluck(&ops);
+  }
+
+  bool WritesDone() override {
+    grpc::internal::CallOpSet<grpc::internal::CallOpClientSendClose> ops;
+    ops.ClientSendClose();
+    call_.PerformOps(&ops);
+    return cq_.Pluck(&ops);
+  }
+
+  /// See the ClientStreamingInterface.Finish method for semantics.
+  ///
+  /// Side effect:
+  ///   - the \a ClientContext associated with this call is updated with
+  ///     possible trailing metadata sent from the server.
+  grpc::Status Finish() override {
+    grpc::internal::CallOpSet<grpc::internal::CallOpRecvInitialMetadata,
+                              grpc::internal::CallOpClientRecvStatus>
+        ops;
+    if (!context_->initial_metadata_received_) {
+      ops.RecvInitialMetadata(context_);
+    }
+    grpc::Status status;
+    ops.ClientRecvStatus(context_, &status);
+    call_.PerformOps(&ops);
+    GPR_ASSERT(cq_.Pluck(&ops));
+    return status;
+  }
+
+ private:
+  friend class internal::ClientReaderWriterFactory<W, R>;
+
+  grpc::ClientContext* context_;
+  grpc::CompletionQueue cq_;
+  grpc::internal::Call call_;
+
+  /// Block to create a stream and write the initial metadata and \a request
+  /// out. Note that \a context will be used to fill in custom initial metadata
+  /// used to send to the server when starting the call.
+  ClientReaderWriter(grpc::ChannelInterface* channel,
+                     const grpc::internal::RpcMethod& method,
+                     grpc::ClientContext* context)
+      : context_(context),
+        cq_(grpc_completion_queue_attributes{
+            GRPC_CQ_CURRENT_VERSION, GRPC_CQ_PLUCK, GRPC_CQ_DEFAULT_POLLING,
+            nullptr}),  // Pluckable cq
+        call_(channel->CreateCall(method, context, &cq_)) {
+    if (!context_->initial_metadata_corked_) {
+      grpc::internal::CallOpSet<grpc::internal::CallOpSendInitialMetadata> ops;
+      ops.SendInitialMetadata(&context->send_initial_metadata_,
+                              context->initial_metadata_flags());
+      call_.PerformOps(&ops);
+      cq_.Pluck(&ops);
+    }
+  }
+};
+
+/// Server-side interface for streaming reads of message of type \a R.
+template <class R>
+class ServerReaderInterface : public internal::ServerStreamingInterface,
+                              public internal::ReaderInterface<R> {};
+
+/// Synchronous (blocking) server-side API for doing client-streaming RPCs,
+/// where the incoming message stream coming from the client has messages of
+/// type \a R.
+template <class R>
+class ServerReader final : public ServerReaderInterface<R> {
+ public:
+  /// See the \a ServerStreamingInterface.SendInitialMetadata method
+  /// for semantics. Note that initial metadata will be affected by the
+  /// \a ServerContext associated with this call.
+  void SendInitialMetadata() override {
+    GPR_ASSERT(!ctx_->sent_initial_metadata_);
+
+    grpc::internal::CallOpSet<grpc::internal::CallOpSendInitialMetadata> ops;
+    ops.SendInitialMetadata(&ctx_->initial_metadata_,
+                            ctx_->initial_metadata_flags());
+    if (ctx_->compression_level_set()) {
+      ops.set_compression_level(ctx_->compression_level());
+    }
+    ctx_->sent_initial_metadata_ = true;
+    call_->PerformOps(&ops);
+    call_->cq()->Pluck(&ops);
+  }
+
+  bool NextMessageSize(uint32_t* sz) override {
+    int result = call_->max_receive_message_size();
+    *sz = (result > 0) ? result : UINT32_MAX;
+    return true;
+  }
+
+  bool Read(R* msg) override {
+    grpc::internal::CallOpSet<grpc::internal::CallOpRecvMessage<R>> ops;
+    ops.RecvMessage(msg);
+    call_->PerformOps(&ops);
+    bool ok = call_->cq()->Pluck(&ops) && ops.got_message;
+    if (!ok) {
+      ctx_->MaybeMarkCancelledOnRead();
+    }
+    return ok;
+  }
+
+ private:
+  grpc::internal::Call* const call_;
+  ServerContext* const ctx_;
+
+  template <class ServiceType, class RequestType, class ResponseType>
+  friend class internal::ClientStreamingHandler;
+
+  ServerReader(grpc::internal::Call* call, grpc::ServerContext* ctx)
+      : call_(call), ctx_(ctx) {}
+};
+
+/// Server-side interface for streaming writes of message of type \a W.
+template <class W>
+class ServerWriterInterface : public internal::ServerStreamingInterface,
+                              public internal::WriterInterface<W> {};
+
+/// Synchronous (blocking) server-side API for doing for doing a
+/// server-streaming RPCs, where the outgoing message stream coming from the
+/// server has messages of type \a W.
+template <class W>
+class ServerWriter final : public ServerWriterInterface<W> {
+ public:
+  /// See the \a ServerStreamingInterface.SendInitialMetadata method
+  /// for semantics.
+  /// Note that initial metadata will be affected by the
+  /// \a ServerContext associated with this call.
+  void SendInitialMetadata() override {
+    GPR_ASSERT(!ctx_->sent_initial_metadata_);
+
+    grpc::internal::CallOpSet<grpc::internal::CallOpSendInitialMetadata> ops;
+    ops.SendInitialMetadata(&ctx_->initial_metadata_,
+                            ctx_->initial_metadata_flags());
+    if (ctx_->compression_level_set()) {
+      ops.set_compression_level(ctx_->compression_level());
+    }
+    ctx_->sent_initial_metadata_ = true;
+    call_->PerformOps(&ops);
+    call_->cq()->Pluck(&ops);
+  }
+
+  /// See the \a WriterInterface.Write method for semantics.
+  ///
+  /// Side effect:
+  ///   Also sends initial metadata if not already sent (using the
+  ///   \a ClientContext associated with this call to fill in values).
+  using internal::WriterInterface<W>::Write;
+  bool Write(const W& msg, grpc::WriteOptions options) override {
+    if (options.is_last_message()) {
+      options.set_buffer_hint();
+    }
+
+    if (!ctx_->pending_ops_.SendMessagePtr(&msg, options).ok()) {
+      return false;
+    }
+    if (!ctx_->sent_initial_metadata_) {
+      ctx_->pending_ops_.SendInitialMetadata(&ctx_->initial_metadata_,
+                                             ctx_->initial_metadata_flags());
+      if (ctx_->compression_level_set()) {
+        ctx_->pending_ops_.set_compression_level(ctx_->compression_level());
+      }
+      ctx_->sent_initial_metadata_ = true;
+    }
+    call_->PerformOps(&ctx_->pending_ops_);
+    // if this is the last message we defer the pluck until AFTER we start
+    // the trailing md op. This prevents hangs. See
+    // https://github.com/grpc/grpc/issues/11546
+    if (options.is_last_message()) {
+      ctx_->has_pending_ops_ = true;
+      return true;
+    }
+    ctx_->has_pending_ops_ = false;
+    return call_->cq()->Pluck(&ctx_->pending_ops_);
+  }
+
+ private:
+  grpc::internal::Call* const call_;
+  grpc::ServerContext* const ctx_;
+
+  template <class ServiceType, class RequestType, class ResponseType>
+  friend class internal::ServerStreamingHandler;
+
+  ServerWriter(grpc::internal::Call* call, grpc::ServerContext* ctx)
+      : call_(call), ctx_(ctx) {}
+};
+
+/// Server-side interface for bi-directional streaming.
+template <class W, class R>
+class ServerReaderWriterInterface : public internal::ServerStreamingInterface,
+                                    public internal::WriterInterface<W>,
+                                    public internal::ReaderInterface<R> {};
+
+/// Actual implementation of bi-directional streaming
+namespace internal {
+template <class W, class R>
+class ServerReaderWriterBody final {
+ public:
+  ServerReaderWriterBody(grpc::internal::Call* call, grpc::ServerContext* ctx)
+      : call_(call), ctx_(ctx) {}
+
+  void SendInitialMetadata() {
+    GPR_ASSERT(!ctx_->sent_initial_metadata_);
+
+    grpc::internal::CallOpSet<grpc::internal::CallOpSendInitialMetadata> ops;
+    ops.SendInitialMetadata(&ctx_->initial_metadata_,
+                            ctx_->initial_metadata_flags());
+    if (ctx_->compression_level_set()) {
+      ops.set_compression_level(ctx_->compression_level());
+    }
+    ctx_->sent_initial_metadata_ = true;
+    call_->PerformOps(&ops);
+    call_->cq()->Pluck(&ops);
+  }
+
+  bool NextMessageSize(uint32_t* sz) {
+    int result = call_->max_receive_message_size();
+    *sz = (result > 0) ? result : UINT32_MAX;
+    return true;
+  }
+
+  bool Read(R* msg) {
+    grpc::internal::CallOpSet<grpc::internal::CallOpRecvMessage<R>> ops;
+    ops.RecvMessage(msg);
+    call_->PerformOps(&ops);
+    bool ok = call_->cq()->Pluck(&ops) && ops.got_message;
+    if (!ok) {
+      ctx_->MaybeMarkCancelledOnRead();
+    }
+    return ok;
+  }
+
+  bool Write(const W& msg, grpc::WriteOptions options) {
+    if (options.is_last_message()) {
+      options.set_buffer_hint();
+    }
+    if (!ctx_->pending_ops_.SendMessagePtr(&msg, options).ok()) {
+      return false;
+    }
+    if (!ctx_->sent_initial_metadata_) {
+      ctx_->pending_ops_.SendInitialMetadata(&ctx_->initial_metadata_,
+                                             ctx_->initial_metadata_flags());
+      if (ctx_->compression_level_set()) {
+        ctx_->pending_ops_.set_compression_level(ctx_->compression_level());
+      }
+      ctx_->sent_initial_metadata_ = true;
+    }
+    call_->PerformOps(&ctx_->pending_ops_);
+    // if this is the last message we defer the pluck until AFTER we start
+    // the trailing md op. This prevents hangs. See
+    // https://github.com/grpc/grpc/issues/11546
+    if (options.is_last_message()) {
+      ctx_->has_pending_ops_ = true;
+      return true;
+    }
+    ctx_->has_pending_ops_ = false;
+    return call_->cq()->Pluck(&ctx_->pending_ops_);
+  }
+
+ private:
+  grpc::internal::Call* const call_;
+  grpc::ServerContext* const ctx_;
+};
+
+}  // namespace internal
+
+/// Synchronous (blocking) server-side API for a bidirectional
+/// streaming call, where the incoming message stream coming from the client has
+/// messages of type \a R, and the outgoing message streaming coming from
+/// the server has messages of type \a W.
+template <class W, class R>
+class ServerReaderWriter final : public ServerReaderWriterInterface<W, R> {
+ public:
+  /// See the \a ServerStreamingInterface.SendInitialMetadata method
+  /// for semantics. Note that initial metadata will be affected by the
+  /// \a ServerContext associated with this call.
+  void SendInitialMetadata() override { body_.SendInitialMetadata(); }
+
+  bool NextMessageSize(uint32_t* sz) override {
+    return body_.NextMessageSize(sz);
+  }
+
+  bool Read(R* msg) override { return body_.Read(msg); }
+
+  /// See the \a WriterInterface.Write(const W& msg, WriteOptions options)
+  /// method for semantics.
+  /// Side effect:
+  ///   Also sends initial metadata if not already sent (using the \a
+  ///   ServerContext associated with this call).
+  using internal::WriterInterface<W>::Write;
+  bool Write(const W& msg, grpc::WriteOptions options) override {
+    return body_.Write(msg, options);
+  }
+
+ private:
+  internal::ServerReaderWriterBody<W, R> body_;
+
+  friend class internal::TemplatedBidiStreamingHandler<ServerReaderWriter<W, R>,
+                                                       false>;
+  ServerReaderWriter(grpc::internal::Call* call, grpc::ServerContext* ctx)
+      : body_(call, ctx) {}
+};
+
+/// A class to represent a flow-controlled unary call. This is something
+/// of a hybrid between conventional unary and streaming. This is invoked
+/// through a unary call on the client side, but the server responds to it
+/// as though it were a single-ping-pong streaming call. The server can use
+/// the \a NextMessageSize method to determine an upper-bound on the size of
+/// the message. A key difference relative to streaming: ServerUnaryStreamer
+/// must have exactly 1 Read and exactly 1 Write, in that order, to function
+/// correctly. Otherwise, the RPC is in error.
+template <class RequestType, class ResponseType>
+class ServerUnaryStreamer final
+    : public ServerReaderWriterInterface<ResponseType, RequestType> {
+ public:
+  /// Block to send initial metadata to client.
+  /// Implicit input parameter:
+  ///    - the \a ServerContext associated with this call will be used for
+  ///      sending initial metadata.
+  void SendInitialMetadata() override { body_.SendInitialMetadata(); }
+
+  /// Get an upper bound on the request message size from the client.
+  bool NextMessageSize(uint32_t* sz) override {
+    return body_.NextMessageSize(sz);
+  }
+
+  /// Read a message of type \a R into \a msg. Completion will be notified by \a
+  /// tag on the associated completion queue.
+  /// This is thread-safe with respect to \a Write or \a WritesDone methods. It
+  /// should not be called concurrently with other streaming APIs
+  /// on the same stream. It is not meaningful to call it concurrently
+  /// with another \a ReaderInterface::Read on the same stream since reads on
+  /// the same stream are delivered in order.
+  ///
+  /// \param[out] msg Where to eventually store the read message.
+  /// \param[in] tag The tag identifying the operation.
+  bool Read(RequestType* request) override {
+    if (read_done_) {
+      return false;
+    }
+    read_done_ = true;
+    return body_.Read(request);
+  }
+
+  /// Block to write \a msg to the stream with WriteOptions \a options.
+  /// This is thread-safe with respect to \a ReaderInterface::Read
+  ///
+  /// \param msg The message to be written to the stream.
+  /// \param options The WriteOptions affecting the write operation.
+  ///
+  /// \return \a true on success, \a false when the stream has been closed.
+  using internal::WriterInterface<ResponseType>::Write;
+  bool Write(const ResponseType& response,
+             grpc::WriteOptions options) override {
+    if (write_done_ || !read_done_) {
+      return false;
+    }
+    write_done_ = true;
+    return body_.Write(response, options);
+  }
+
+ private:
+  internal::ServerReaderWriterBody<ResponseType, RequestType> body_;
+  bool read_done_;
+  bool write_done_;
+
+  friend class internal::TemplatedBidiStreamingHandler<
+      ServerUnaryStreamer<RequestType, ResponseType>, true>;
+  ServerUnaryStreamer(grpc::internal::Call* call, grpc::ServerContext* ctx)
+      : body_(call, ctx), read_done_(false), write_done_(false) {}
+};
+
+/// A class to represent a flow-controlled server-side streaming call.
+/// This is something of a hybrid between server-side and bidi streaming.
+/// This is invoked through a server-side streaming call on the client side,
+/// but the server responds to it as though it were a bidi streaming call that
+/// must first have exactly 1 Read and then any number of Writes.
+template <class RequestType, class ResponseType>
+class ServerSplitStreamer final
+    : public ServerReaderWriterInterface<ResponseType, RequestType> {
+ public:
+  /// Block to send initial metadata to client.
+  /// Implicit input parameter:
+  ///    - the \a ServerContext associated with this call will be used for
+  ///      sending initial metadata.
+  void SendInitialMetadata() override { body_.SendInitialMetadata(); }
+
+  /// Get an upper bound on the request message size from the client.
+  bool NextMessageSize(uint32_t* sz) override {
+    return body_.NextMessageSize(sz);
+  }
+
+  /// Read a message of type \a R into \a msg. Completion will be notified by \a
+  /// tag on the associated completion queue.
+  /// This is thread-safe with respect to \a Write or \a WritesDone methods. It
+  /// should not be called concurrently with other streaming APIs
+  /// on the same stream. It is not meaningful to call it concurrently
+  /// with another \a ReaderInterface::Read on the same stream since reads on
+  /// the same stream are delivered in order.
+  ///
+  /// \param[out] msg Where to eventually store the read message.
+  /// \param[in] tag The tag identifying the operation.
+  bool Read(RequestType* request) override {
+    if (read_done_) {
+      return false;
+    }
+    read_done_ = true;
+    return body_.Read(request);
+  }
+
+  /// Block to write \a msg to the stream with WriteOptions \a options.
+  /// This is thread-safe with respect to \a ReaderInterface::Read
+  ///
+  /// \param msg The message to be written to the stream.
+  /// \param options The WriteOptions affecting the write operation.
+  ///
+  /// \return \a true on success, \a false when the stream has been closed.
+  using internal::WriterInterface<ResponseType>::Write;
+  bool Write(const ResponseType& response,
+             grpc::WriteOptions options) override {
+    return read_done_ && body_.Write(response, options);
+  }
+
+ private:
+  internal::ServerReaderWriterBody<ResponseType, RequestType> body_;
+  bool read_done_;
+
+  friend class internal::TemplatedBidiStreamingHandler<
+      ServerSplitStreamer<RequestType, ResponseType>, false>;
+  ServerSplitStreamer(grpc::internal::Call* call, grpc::ServerContext* ctx)
+      : body_(call, ctx), read_done_(false) {}
+};
+
+}  // namespace grpc
 
 #endif  // GRPCPP_SUPPORT_SYNC_STREAM_H
diff --git a/contrib/libs/grpc/include/grpcpp/support/time.h b/contrib/libs/grpc/include/grpcpp/support/time.h
index b5e07b68f2..5397eb6ba2 100644
--- a/contrib/libs/grpc/include/grpcpp/support/time.h
+++ b/contrib/libs/grpc/include/grpcpp/support/time.h
@@ -1,24 +1,89 @@
-/*
- *
- * Copyright 2015 gRPC authors.
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
- */
+//
+//
+// Copyright 2015 gRPC authors.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+//
 
 #ifndef GRPCPP_SUPPORT_TIME_H
 #define GRPCPP_SUPPORT_TIME_H
 
-#include <grpcpp/impl/codegen/time.h>  // IWYU pragma: export
+#include <chrono>
+
+#include <grpc/impl/grpc_types.h>
+#include <grpcpp/support/config.h>
+
+namespace grpc {
+
+/// If you are trying to use CompletionQueue::AsyncNext with a time class that
+/// isn't either gpr_timespec or std::chrono::system_clock::time_point, you
+/// will most likely be looking at this comment as your compiler will have
+/// fired an error below. In order to fix this issue, you have two potential
+/// solutions:
+
+///   1. Use gpr_timespec or std::chrono::system_clock::time_point instead
+///   2. Specialize the TimePoint class with whichever time class that you
+///      want to use here. See below for two examples of how to do this.
+///
+template <typename T>
+class TimePoint {
+ public:
+  // If you see the error with methods below, you may need either
+  // i) using the existing types having a conversion class such as
+  // gpr_timespec and std::chrono::system_clock::time_point or
+  // ii) writing a new TimePoint<YourType> to address your case.
+  TimePoint(const T& /*time*/) = delete;
+  gpr_timespec raw_time() = delete;
+};
+
+template <>
+class TimePoint<gpr_timespec> {
+ public:
+  // NOLINTNEXTLINE(google-explicit-constructor)
+  TimePoint(const gpr_timespec& time) : time_(time) {}
+  gpr_timespec raw_time() { return time_; }
+
+ private:
+  gpr_timespec time_;
+};
+
+}  // namespace grpc
+
+namespace grpc {
+
+// from and to should be absolute time.
+void Timepoint2Timespec(const std::chrono::system_clock::time_point& from,
+                        gpr_timespec* to);
+void TimepointHR2Timespec(
+    const std::chrono::high_resolution_clock::time_point& from,
+    gpr_timespec* to);
+
+std::chrono::system_clock::time_point Timespec2Timepoint(gpr_timespec t);
+
+template <>
+class TimePoint<std::chrono::system_clock::time_point> {
+ public:
+  // NOLINTNEXTLINE(google-explicit-constructor)
+  TimePoint(const std::chrono::system_clock::time_point& time) {
+    Timepoint2Timespec(time, &time_);
+  }
+  gpr_timespec raw_time() const { return time_; }
+
+ private:
+  gpr_timespec time_;
+};
+
+}  // namespace grpc
 
 #endif  // GRPCPP_SUPPORT_TIME_H
diff --git a/contrib/libs/grpc/include/grpcpp/support/validate_service_config.h b/contrib/libs/grpc/include/grpcpp/support/validate_service_config.h
index f1368623b5..12ecf1c9a4 100644
--- a/contrib/libs/grpc/include/grpcpp/support/validate_service_config.h
+++ b/contrib/libs/grpc/include/grpcpp/support/validate_service_config.h
@@ -1,20 +1,20 @@
-/*
- *
- * Copyright 2019 gRPC authors.
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
- */
+//
+//
+// Copyright 2019 gRPC authors.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+//
 
 #ifndef GRPCPP_SUPPORT_VALIDATE_SERVICE_CONFIG_H
 #define GRPCPP_SUPPORT_VALIDATE_SERVICE_CONFIG_H
diff --git a/contrib/libs/grpc/include/grpcpp/version_info.h b/contrib/libs/grpc/include/grpcpp/version_info.h
new file mode 100644
index 0000000000..13742e57c7
--- /dev/null
+++ b/contrib/libs/grpc/include/grpcpp/version_info.h
@@ -0,0 +1,27 @@
+// Copyright 2022 gRPC authors.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+// This file is autogenerated from:
+// templates/include/grpcpp/version_info.h.template
+
+#ifndef GRPCPP_VERSION_INFO_H
+#define GRPCPP_VERSION_INFO_H
+
+#define GRPC_CPP_VERSION_MAJOR 1
+#define GRPC_CPP_VERSION_MINOR 53
+#define GRPC_CPP_VERSION_PATCH 1
+#define GRPC_CPP_VERSION_TAG ""
+#define GRPC_CPP_VERSION_STRING "1.53.1"
+
+#endif  // GRPCPP_VERSION_INFO_H