/* Copyright 2016 The TensorFlow Authors. All Rights Reserved.

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 THIRD_PARTY_TENSORFLOW_CORE_DISTRIBUTED_RUNTIME_RPC_GRPC_WORKER_SERVICE_H_
#define THIRD_PARTY_TENSORFLOW_CORE_DISTRIBUTED_RUNTIME_RPC_GRPC_WORKER_SERVICE_H_

#include "tensorflow/core/distributed_runtime/worker.h"

namespace grpc {
class ByteBuffer;
class ServerBuilder;
}  // namespace grpc

namespace tensorflow {

class AsyncServiceInterface;
struct WorkerEnv;
struct WorkerSession;

class GrpcWorker : public Worker {
 public:
  GrpcWorker(WorkerEnv* env);

  // Specialized version of RecvTensor for gRPC, which avoids a copy.
  void RecvTensorAsync(CallOptions* opts, const RecvTensorRequest* request,
                       ::grpc::ByteBuffer* response, StatusCallback done);

  WorkerEnv* env();
};

std::unique_ptr<GrpcWorker> NewGrpcWorker(WorkerEnv* worker_env);

// Returns an implementation of WorkerService rpc service.
std::unique_ptr<AsyncServiceInterface> NewGrpcWorkerService(
    GrpcWorker* worker, ::grpc::ServerBuilder* builder);

}  // namespace tensorflow

#endif  // THIRD_PARTY_TENSORFLOW_CORE_DISTRIBUTED_RUNTIME_RPC_GRPC_WORKER_SERVICE_H_
