intermediate changes

ref:cde9a383711a11544ce7e107a78147fb96cc4029

1 files changed, 142 insertions, 0 deletions

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
new file mode 100644
index 00000000000..a812b086a2a
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+++ b/contrib/libs/grpc/include/grpcpp/impl/codegen/async_generic_service.h
@@ -0,0 +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.
+ *
+ */
+
+#ifndef GRPCPP_IMPL_CODEGEN_ASYNC_GENERIC_SERVICE_H
+#define GRPCPP_IMPL_CODEGEN_ASYNC_GENERIC_SERVICE_H
+
+#include <grpc/impl/codegen/port_platform.h>
+
+#include <grpcpp/impl/codegen/async_stream.h>
+#include <grpcpp/impl/codegen/byte_buffer.h>
+#include <grpcpp/impl/codegen/server_callback.h>
+#include <grpcpp/impl/codegen/server_callback_handlers.h>
+
+struct grpc_server;
+
+namespace grpc {
+
+typedef ServerAsyncReaderWriter<ByteBuffer, ByteBuffer>
+    GenericServerAsyncReaderWriter;
+typedef ServerAsyncResponseWriter<ByteBuffer> GenericServerAsyncResponseWriter;
+typedef ServerAsyncReader<ByteBuffer, ByteBuffer> GenericServerAsyncReader;
+typedef ServerAsyncWriter<ByteBuffer> GenericServerAsyncWriter;
+
+class GenericServerContext final : public ServerContext {
+ public:
+  const TString& method() const { return method_; }
+  const TString& host() const { return host_; }
+
+ private:
+  friend class ServerInterface;
+
+  TString method_;
+  TString host_;
+};
+
+// A generic service at the server side accepts all RPC methods and hosts. It is
+// typically used in proxies. The generic service can be registered to a server
+// which also has other services.
+// Sample usage:
+//   ServerBuilder builder;
+//   auto cq = builder.AddCompletionQueue();
+//   AsyncGenericService generic_service;
+//   builder.RegisterAsyncGenericService(&generic_service);
+//   auto server = builder.BuildAndStart();
+//
+//   // request a new call
+//   GenericServerContext context;
+//   GenericServerAsyncReaderWriter stream;
+//   generic_service.RequestCall(&context, &stream, cq.get(), cq.get(), tag);
+//
+// When tag is retrieved from cq->Next(), context.method() can be used to look
+// at the method and the RPC can be handled accordingly.
+class AsyncGenericService final {
+ public:
+  AsyncGenericService() : server_(nullptr) {}
+
+  void RequestCall(GenericServerContext* ctx,
+                   GenericServerAsyncReaderWriter* reader_writer,
+                   ::grpc::CompletionQueue* call_cq,
+                   ::grpc::ServerCompletionQueue* notification_cq, void* tag);
+
+ private:
+  friend class grpc::Server;
+  grpc::Server* server_;
+};
+
+#ifndef GRPC_CALLBACK_API_NONEXPERIMENTAL
+namespace experimental {
+#endif
+
+/// \a ServerGenericBidiReactor is the reactor class for bidi streaming RPCs
+/// invoked on a CallbackGenericService. It is just a ServerBidi reactor with
+/// ByteBuffer arguments.
+using ServerGenericBidiReactor = ServerBidiReactor<ByteBuffer, ByteBuffer>;
+
+class GenericCallbackServerContext final : public grpc::CallbackServerContext {
+ public:
+  const TString& method() const { return method_; }
+  const TString& host() const { return host_; }
+
+ private:
+  friend class ::grpc::Server;
+
+  TString method_;
+  TString host_;
+};
+
+/// \a CallbackGenericService is the base class for generic services implemented
+/// using the callback API and registered through the ServerBuilder using
+/// RegisterCallbackGenericService.
+class CallbackGenericService {
+ public:
+  CallbackGenericService() {}
+  virtual ~CallbackGenericService() {}
+
+  /// The "method handler" for the generic API. This function should be
+  /// overridden to provide a ServerGenericBidiReactor that implements the
+  /// application-level interface for this RPC. Unimplemented by default.
+  virtual ServerGenericBidiReactor* CreateReactor(
+      GenericCallbackServerContext* /*ctx*/) {
+    class Reactor : public ServerGenericBidiReactor {
+     public:
+      Reactor() { this->Finish(Status(StatusCode::UNIMPLEMENTED, "")); }
+      void OnDone() override { delete this; }
+    };
+    return new Reactor;
+  }
+
+ private:
+  friend class grpc::Server;
+
+  internal::CallbackBidiHandler<ByteBuffer, ByteBuffer>* Handler() {
+    return new internal::CallbackBidiHandler<ByteBuffer, ByteBuffer>(
+        [this](::grpc::CallbackServerContext* ctx) {
+          return CreateReactor(static_cast<GenericCallbackServerContext*>(ctx));
+        });
+  }
+
+  grpc::Server* server_{nullptr};
+};
+
+#ifndef GRPC_CALLBACK_API_NONEXPERIMENTAL
+}  // namespace experimental
+#endif
+}  // namespace grpc
+
+#endif  // GRPCPP_IMPL_CODEGEN_ASYNC_GENERIC_SERVICE_H