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https://github.com/nestriness/cdc-file-transfer.git
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1120dcbee0
Starts the streaming service if it's not up and running. This required adding the ability to run a detached process. By default, all child processes are killed when the parent process exits. Since detached child processes don't run with a console, they need to create sub- processes with CREATE_NO_WINDOW since otherwise a new console pops up, e.g. for every ssh command. Polls for 20 seconds while the service starts up. For this purpose, a BackgroundServiceClient is added. This will be reused in a future CL by a new stop-service command to exit the service. Also adds --service-port as additional argument to start-service.
57 lines
1.5 KiB
C++
57 lines
1.5 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_CLIENT_H_
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#define CDC_STREAM_BACKGROUND_SERVICE_CLIENT_H_
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#include <memory>
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#include "absl/status/status.h"
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#include "absl/status/statusor.h"
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#include "proto/background_service.grpc.pb.h"
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namespace grpc_impl {
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class Channel;
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}
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namespace cdc_ft {
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// gRpc client for managing the asset streaming service.
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class BackgroundServiceClient {
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public:
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// |channel| is a grpc channel to use.
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explicit BackgroundServiceClient(std::shared_ptr<grpc::Channel> channel);
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~BackgroundServiceClient();
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// Initialize service shutdown.
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absl::Status Exit();
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// Returns the PID of the service process.
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absl::StatusOr<int> GetPid();
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// Verifies that the service is running and able to take requests.
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absl::Status IsHealthy();
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private:
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using BackgroundService = backgroundservice::BackgroundService;
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std::unique_ptr<BackgroundService::Stub> stub_;
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};
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} // namespace cdc_ft
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#endif // CDC_STREAM_BACKGROUND_SERVICE_CLIENT_H_
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