123 lines
4.4 KiB
C++
123 lines
4.4 KiB
C++
/*
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* Copyright (C) 2023 The Android Open Source Project
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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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#pragma once
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#include "IVehicleHardware.h"
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#include "VehicleServer.grpc.pb.h"
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#include "VehicleServer.pb.h"
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#include <grpc++/grpc++.h>
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#include <atomic>
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#include <chrono>
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#include <cstdint>
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#include <functional>
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#include <memory>
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#include <shared_mutex>
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#include <string>
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#include <utility>
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namespace android::hardware::automotive::vehicle::virtualization {
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namespace aidlvhal = ::aidl::android::hardware::automotive::vehicle;
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// Connect other GRPC vehicle hardware(s) to the underlying vehicle hardware.
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class GrpcVehicleProxyServer : public proto::VehicleServer::Service {
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public:
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GrpcVehicleProxyServer(std::string serverAddr, std::unique_ptr<IVehicleHardware>&& hardware);
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::grpc::Status GetAllPropertyConfig(
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::grpc::ServerContext* context, const ::google::protobuf::Empty* request,
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::grpc::ServerWriter<proto::VehiclePropConfig>* stream) override;
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::grpc::Status SetValues(::grpc::ServerContext* context,
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const proto::VehiclePropValueRequests* requests,
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proto::SetValueResults* results) override;
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::grpc::Status GetValues(::grpc::ServerContext* context,
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const proto::VehiclePropValueRequests* requests,
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proto::GetValueResults* results) override;
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::grpc::Status UpdateSampleRate(::grpc::ServerContext* context,
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const proto::UpdateSampleRateRequest* request,
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proto::VehicleHalCallStatus* status) override;
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::grpc::Status CheckHealth(::grpc::ServerContext* context, const ::google::protobuf::Empty*,
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proto::VehicleHalCallStatus* status) override;
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::grpc::Status Dump(::grpc::ServerContext* context, const proto::DumpOptions* options,
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proto::DumpResult* result) override;
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::grpc::Status StartPropertyValuesStream(
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::grpc::ServerContext* context, const ::google::protobuf::Empty* request,
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::grpc::ServerWriter<proto::VehiclePropValues>* stream) override;
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GrpcVehicleProxyServer& Start();
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GrpcVehicleProxyServer& Shutdown();
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void Wait();
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private:
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void OnVehiclePropChange(const std::vector<aidlvhal::VehiclePropValue>& values);
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// We keep long-lasting connection for streaming the prop values.
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struct ConnectionDescriptor {
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explicit ConnectionDescriptor(::grpc::ServerWriter<proto::VehiclePropValues>* stream)
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: mStream(stream),
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mConnectionID(connection_id_counter_.fetch_add(1) + 1),
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mMtx(std::make_unique<std::mutex>()),
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mCV(std::make_unique<std::condition_variable>()) {}
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ConnectionDescriptor(const ConnectionDescriptor&) = delete;
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ConnectionDescriptor(ConnectionDescriptor&& cd) = default;
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ConnectionDescriptor& operator=(const ConnectionDescriptor&) = delete;
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ConnectionDescriptor& operator=(ConnectionDescriptor&& cd) = default;
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~ConnectionDescriptor();
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uint64_t ID() const { return mConnectionID; }
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bool Write(const proto::VehiclePropValues& values);
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void Wait();
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void Shutdown();
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private:
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::grpc::ServerWriter<proto::VehiclePropValues>* mStream;
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uint64_t mConnectionID{0};
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std::unique_ptr<std::mutex> mMtx;
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std::unique_ptr<std::condition_variable> mCV;
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bool mShutdownFlag{false};
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static std::atomic<uint64_t> connection_id_counter_;
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};
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std::string mServiceAddr;
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std::unique_ptr<::grpc::Server> mServer{nullptr};
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std::unique_ptr<IVehicleHardware> mHardware;
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std::shared_mutex mConnectionMutex;
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std::vector<std::shared_ptr<ConnectionDescriptor>> mValueStreamingConnections;
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static constexpr auto kHardwareOpTimeout = std::chrono::seconds(1);
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};
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} // namespace android::hardware::automotive::vehicle::virtualization
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