forked from Kistler-Group/sdbus-cpp
146 lines
6.0 KiB
C++
146 lines
6.0 KiB
C++
/**
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* (C) 2016 - 2017 KISTLER INSTRUMENTE AG, Winterthur, Switzerland
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* (C) 2016 - 2019 Stanislav Angelovic <angelovic.s@gmail.com>
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*
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* @file Connection.h
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*
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* Created on: Nov 8, 2016
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* Project: sdbus-c++
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* Description: High-level D-Bus IPC C++ library based on sd-bus
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*
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* This file is part of sdbus-c++.
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*
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* sdbus-c++ is free software; you can redistribute it and/or modify it
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* under the terms of the GNU Lesser General Public License as published by
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* the Free Software Foundation, either version 2.1 of the License, or
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* (at your option) any later version.
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*
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* sdbus-c++ is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public License
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* along with sdbus-c++. If not, see <http://www.gnu.org/licenses/>.
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*/
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#ifndef SDBUS_CXX_INTERNAL_CONNECTION_H_
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#define SDBUS_CXX_INTERNAL_CONNECTION_H_
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#include <sdbus-c++/IConnection.h>
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#include <sdbus-c++/Message.h>
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#include "IConnection.h"
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#include "ScopeGuard.h"
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#include "ISdBus.h"
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#include <systemd/sd-bus.h>
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#include <memory>
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#include <thread>
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#include <string>
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#include <vector>
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#include <atomic>
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#include <mutex>
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namespace sdbus::internal {
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class Connection final
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: public sdbus::IConnection // External, public interface
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, public sdbus::internal::IConnection // Internal, private interface
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{
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public:
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// Bus type tags
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struct system_bus_t{};
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struct session_bus_t{};
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struct remote_system_bus_t{};
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Connection(std::unique_ptr<ISdBus>&& interface, system_bus_t);
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Connection(std::unique_ptr<ISdBus>&& interface, session_bus_t);
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Connection(std::unique_ptr<ISdBus>&& interface, remote_system_bus_t, const std::string& host);
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~Connection() override;
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void requestName(const std::string& name) override;
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void releaseName(const std::string& name) override;
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std::string getUniqueName() const override;
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void enterEventLoop() override;
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void enterEventLoopAsync() override;
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void leaveEventLoop() override;
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PollData getEventLoopPollData() const override;
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bool processPendingRequest() override;
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void addObjectManager(const std::string& objectPath) override;
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SlotPtr addObjectManager(const std::string& objectPath, void* /*dummy*/) override;
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void setMethodCallTimeout(uint64_t timeout) override;
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uint64_t getMethodCallTimeout() const override;
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const ISdBus& getSdBusInterface() const override;
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ISdBus& getSdBusInterface() override;
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SlotPtr addObjectVTable( const std::string& objectPath
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, const std::string& interfaceName
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, const sd_bus_vtable* vtable
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, void* userData ) override;
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PlainMessage createPlainMessage() const override;
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MethodCall createMethodCall( const std::string& destination
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, const std::string& objectPath
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, const std::string& interfaceName
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, const std::string& methodName ) const override;
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Signal createSignal( const std::string& objectPath
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, const std::string& interfaceName
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, const std::string& signalName ) const override;
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void emitPropertiesChangedSignal( const std::string& objectPath
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, const std::string& interfaceName
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, const std::vector<std::string>& propNames ) override;
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void emitInterfacesAddedSignal(const std::string& objectPath) override;
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void emitInterfacesAddedSignal( const std::string& objectPath
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, const std::vector<std::string>& interfaces ) override;
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void emitInterfacesRemovedSignal(const std::string& objectPath) override;
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void emitInterfacesRemovedSignal( const std::string& objectPath
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, const std::vector<std::string>& interfaces ) override;
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SlotPtr registerSignalHandler( const std::string& sender
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, const std::string& objectPath
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, const std::string& interfaceName
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, const std::string& signalName
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, sd_bus_message_handler_t callback
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, void* userData ) override;
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MethodReply tryCallMethodSynchronously(const MethodCall& message, uint64_t timeout) override;
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private:
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using BusFactory = std::function<int(sd_bus**)>;
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using BusPtr = std::unique_ptr<sd_bus, std::function<sd_bus*(sd_bus*)>>;
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Connection(std::unique_ptr<ISdBus>&& interface, const BusFactory& busFactory);
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BusPtr openBus(const std::function<int(sd_bus**)>& busFactory);
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void finishHandshake(sd_bus* bus);
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bool waitForNextRequest();
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static std::string composeSignalMatchFilter(const std::string &sender, const std::string &objectPath,
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const std::string &interfaceName,
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const std::string &signalName);
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void notifyEventLoopToExit();
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void clearExitNotification();
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void joinWithEventLoop();
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static std::vector</*const */char*> to_strv(const std::vector<std::string>& strings);
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struct LoopExitEventFd
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{
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LoopExitEventFd();
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~LoopExitEventFd();
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int fd;
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};
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private:
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std::unique_ptr<ISdBus> iface_;
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BusPtr bus_;
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std::thread asyncLoopThread_;
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std::atomic<std::thread::id> loopThreadId_;
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std::mutex loopMutex_;
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LoopExitEventFd loopExitFd_;
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};
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}
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#endif /* SDBUS_CXX_INTERNAL_CONNECTION_H_ */
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