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//
//
// 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 GRPC_SRC_CORE_LIB_SURFACE_LAME_CLIENT_H
#define GRPC_SRC_CORE_LIB_SURFACE_LAME_CLIENT_H
#include <grpc/support/port_platform.h>
#include <memory>
#include "y_absl/base/thread_annotations.h"
#include "y_absl/status/status.h"
#include "y_absl/status/statusor.h"
#include <grpc/grpc.h>
#include "src/core/lib/channel/channel_args.h"
#include "src/core/lib/channel/channel_fwd.h"
#include "src/core/lib/channel/promise_based_filter.h"
#include "src/core/lib/gprpp/sync.h"
#include "src/core/lib/iomgr/error.h"
#include "src/core/lib/promise/arena_promise.h"
#include "src/core/lib/transport/connectivity_state.h"
#include "src/core/lib/transport/transport.h"
namespace grpc_core {
// Does NOT take ownership of error.
grpc_arg MakeLameClientErrorArg(grpc_error_handle* error);
// This filter becomes the entire channel stack for a channel that fails to be
// created. Every call returns failure.
class LameClientFilter : public ChannelFilter {
public:
static const grpc_channel_filter kFilter;
static y_absl::StatusOr<LameClientFilter> Create(
const ChannelArgs& args, ChannelFilter::Args filter_args);
ArenaPromise<ServerMetadataHandle> MakeCallPromise(
CallArgs call_args, NextPromiseFactory next_promise_factory) override;
bool StartTransportOp(grpc_transport_op*) override;
bool GetChannelInfo(const grpc_channel_info*) override;
private:
explicit LameClientFilter(y_absl::Status error);
y_absl::Status error_;
struct State {
State();
Mutex mu;
ConnectivityStateTracker state_tracker Y_ABSL_GUARDED_BY(mu);
};
std::unique_ptr<State> state_;
};
} // namespace grpc_core
#endif // GRPC_SRC_CORE_LIB_SURFACE_LAME_CLIENT_H
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