113 lines
3.1 KiB
C++
113 lines
3.1 KiB
C++
/*
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* Copyright (C) 2022 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 <atomic>
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#include <map>
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#include <optional>
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#include <shared_mutex>
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#include <string>
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#include <vector>
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#include <fruit/fruit.h>
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#include "cvd_server.pb.h"
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#include "common/libs/fs/epoll.h"
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#include "common/libs/fs/shared_fd.h"
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#include "common/libs/utils/result.h"
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#include "common/libs/utils/subprocess.h"
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#include "common/libs/utils/unix_sockets.h"
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#include "host/commands/cvd/epoll_loop.h"
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#include "host/commands/cvd/instance_manager.h"
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#include "host/commands/cvd/server_client.h"
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namespace cuttlefish {
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class CvdServerHandler {
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public:
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virtual ~CvdServerHandler() = default;
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virtual Result<bool> CanHandle(const RequestWithStdio&) const = 0;
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virtual Result<cvd::Response> Handle(const RequestWithStdio&) = 0;
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virtual Result<void> Interrupt() = 0;
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};
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class CvdServer {
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public:
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INJECT(CvdServer(EpollPool&, InstanceManager&));
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~CvdServer();
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Result<void> StartServer(SharedFD server);
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void Stop();
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void Join();
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private:
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struct OngoingRequest {
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CvdServerHandler* handler;
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std::mutex mutex;
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std::thread::id thread_id;
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};
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Result<void> AcceptClient(EpollEvent);
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Result<void> HandleMessage(EpollEvent);
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Result<cvd::Response> HandleRequest(RequestWithStdio, SharedFD client);
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Result<void> BestEffortWakeup();
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EpollPool& epoll_pool_;
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InstanceManager& instance_manager_;
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std::atomic_bool running_ = true;
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std::mutex ongoing_requests_mutex_;
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std::set<std::shared_ptr<OngoingRequest>> ongoing_requests_;
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// TODO(schuffelen): Move this thread pool to another class.
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std::mutex threads_mutex_;
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std::vector<std::thread> threads_;
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};
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class CvdCommandHandler : public CvdServerHandler {
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public:
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INJECT(CvdCommandHandler(InstanceManager& instance_manager));
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Result<bool> CanHandle(const RequestWithStdio&) const override;
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Result<cvd::Response> Handle(const RequestWithStdio&) override;
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Result<void> Interrupt() override;
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private:
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InstanceManager& instance_manager_;
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std::optional<Subprocess> subprocess_;
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std::mutex interruptible_;
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bool interrupted_ = false;
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};
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fruit::Component<fruit::Required<InstanceManager>> cvdCommandComponent();
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fruit::Component<fruit::Required<CvdServer, InstanceManager>>
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cvdShutdownComponent();
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fruit::Component<> cvdVersionComponent();
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fruit::Component<fruit::Required<CvdCommandHandler>> AcloudCommandComponent();
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struct CommandInvocation {
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std::string command;
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std::vector<std::string> arguments;
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};
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CommandInvocation ParseInvocation(const cvd::Request& request);
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Result<int> CvdServerMain(SharedFD server_fd);
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} // namespace cuttlefish
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