mirror of
https://github.com/nestriness/cdc-file-transfer.git
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90717ce670
Implements cdc_stream stop-service. Also fixes an issue in the BackgroundService implementation where Exit() would deadlock since server shutdown waits for all RPCs to exit.
64 lines
2.0 KiB
C++
64 lines
2.0 KiB
C++
/*
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* Copyright 2022 Google LLC
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#ifndef CDC_STREAM_BACKGROUND_SERVICE_IMPL_H_
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#define CDC_STREAM_BACKGROUND_SERVICE_IMPL_H_
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#include <memory>
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#include <thread>
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#include "absl/status/status.h"
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#include "cdc_stream/background_service_impl.h"
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#include "cdc_stream/session_management_server.h"
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#include "grpcpp/grpcpp.h"
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#include "proto/background_service.grpc.pb.h"
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namespace cdc_ft {
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// Implements a service to manage a background process as a server.
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// This service is owned by SessionManagementServer.
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class BackgroundServiceImpl final
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: public backgroundservice::BackgroundService::Service {
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public:
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using GetPidResponse = backgroundservice::GetPidResponse;
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using EmptyProto = google::protobuf::Empty;
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BackgroundServiceImpl();
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~BackgroundServiceImpl();
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// Exit callback gets called from the Exit() RPC.
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using ExitCallback = std::function<absl::Status()>;
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void SetExitCallback(ExitCallback exit_callback);
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grpc::Status Exit(grpc::ServerContext* context, const EmptyProto* request,
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EmptyProto* response) override;
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grpc::Status GetPid(grpc::ServerContext* context, const EmptyProto* request,
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GetPidResponse* response) override;
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grpc::Status HealthCheck(grpc::ServerContext* context,
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const EmptyProto* request,
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EmptyProto* response) override;
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private:
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ExitCallback exit_callback_;
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std::unique_ptr<std::thread> exit_thread_;
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};
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} // namespace cdc_ft
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#endif // CDC_STREAM_BACKGROUND_SERVICE_IMPL_H_
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