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/* Copyright (C) 2013 BMW Group
* Author: Manfred Bathelt (manfred.bathelt@bmw.de)
* Author: Juergen Gehring (juergen.gehring@bmw.de)
* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
#if !defined (COMMONAPI_INTERNAL_COMPILATION)
#error "Only <CommonAPI/CommonAPI.h> can be included directly, this file may disappear or change contents."
#endif
#ifndef COMMONAPI_DBUS_DBUS_CONNECTION_H_
#define COMMONAPI_DBUS_DBUS_CONNECTION_H_
#include "DBusProxyConnection.h"
#include "DBusDaemonProxy.h"
#include "DBusServiceRegistry.h"
#include "DBusObjectManager.h"
#include "DBusMainLoopContext.h"
#include "DBusConnectionBusType.h"
#include <dbus/dbus.h>
#include <atomic>
namespace CommonAPI {
namespace DBus {
class DBusObjectManager;
class DBusConnectionStatusEvent: public DBusProxyConnection::ConnectionStatusEvent {
friend class DBusConnection;
public:
DBusConnectionStatusEvent(DBusConnection* dbusConnection);
protected:
virtual void onListenerAdded(const CancellableListener& listener);
DBusConnection* dbusConnection_;
};
struct WatchContext {
WatchContext(std::weak_ptr<MainLoopContext> mainLoopContext, DispatchSource* dispatchSource) :
mainLoopContext_(mainLoopContext), dispatchSource_(dispatchSource) {
}
std::weak_ptr<MainLoopContext> mainLoopContext_;
DispatchSource* dispatchSource_;
};
class DBusConnection: public DBusProxyConnection, public std::enable_shared_from_this<DBusConnection> {
public:
DBusConnection(BusType busType);
static std::shared_ptr<DBusConnection> getBus(const BusType& dbusBusType);
static std::shared_ptr<DBusConnection> wrapLibDBus(::DBusConnection* libDbusConnection);
static std::shared_ptr<DBusConnection> getSessionBus();
static std::shared_ptr<DBusConnection> getSystemBus();
static std::shared_ptr<DBusConnection> getStarterBus();
DBusConnection(const DBusConnection&) = delete;
DBusConnection(::DBusConnection* libDbusConnection);
DBusConnection& operator=(const DBusConnection&) = delete;
virtual ~DBusConnection();
BusType getBusType() const;
bool connect(bool startDispatchThread = true);
bool connect(DBusError& dbusError, bool startDispatchThread = true);
void disconnect();
virtual bool isConnected() const;
virtual ConnectionStatusEvent& getConnectionStatusEvent();
virtual bool requestServiceNameAndBlock(const std::string& serviceName) const;
virtual bool releaseServiceName(const std::string& serviceName) const;
bool sendDBusMessage(const DBusMessage& dbusMessage, uint32_t* allocatedSerial = NULL) const;
static const int kDefaultSendTimeoutMs = 5000;
std::future<CallStatus> sendDBusMessageWithReplyAsync(
const DBusMessage& dbusMessage,
std::unique_ptr<DBusMessageReplyAsyncHandler> dbusMessageReplyAsyncHandler,
int timeoutMilliseconds = kDefaultSendTimeoutMs) const;
DBusMessage sendDBusMessageWithReplyAndBlock(const DBusMessage& dbusMessage,
DBusError& dbusError,
int timeoutMilliseconds = kDefaultSendTimeoutMs) const;
virtual bool addObjectManagerSignalMemberHandler(const std::string& dbusBusName,
DBusSignalHandler* dbusSignalHandler);
virtual bool removeObjectManagerSignalMemberHandler(const std::string& dbusBusName,
DBusSignalHandler* dbusSignalHandler);
DBusSignalHandlerToken addSignalMemberHandler(const std::string& objectPath,
const std::string& interfaceName,
const std::string& interfaceMemberName,
const std::string& interfaceMemberSignature,
DBusSignalHandler* dbusSignalHandler,
const bool justAddFilter = false);
DBusProxyConnection::DBusSignalHandlerToken subscribeForSelectiveBroadcast(bool& subscriptionAccepted,
const std::string& objectPath,
const std::string& interfaceName,
const std::string& interfaceMemberName,
const std::string& interfaceMemberSignature,
DBusSignalHandler* dbusSignalHandler,
DBusProxy* callingProxy);
void unsubscribeFromSelectiveBroadcast(const std::string& eventName,
DBusProxyConnection::DBusSignalHandlerToken subscription,
DBusProxy* callingProxy,
const DBusSignalHandler* dbusSignalHandler);
void registerObjectPath(const std::string& objectPath);
void unregisterObjectPath(const std::string& objectPath);
bool removeSignalMemberHandler(const DBusSignalHandlerToken& dbusSignalHandlerToken,
const DBusSignalHandler* dbusSignalHandler = NULL);
bool readWriteDispatch(int timeoutMilliseconds = -1);
virtual const std::shared_ptr<DBusServiceRegistry> getDBusServiceRegistry();
virtual const std::shared_ptr<DBusObjectManager> getDBusObjectManager();
void setObjectPathMessageHandler(DBusObjectPathMessageHandler);
bool isObjectPathMessageHandlerSet();
virtual bool attachMainLoopContext(std::weak_ptr<MainLoopContext>);
bool isDispatchReady();
bool singleDispatch();
typedef std::tuple<std::string, std::string, std::string> DBusSignalMatchRuleTuple;
typedef std::pair<uint32_t, std::string> DBusSignalMatchRuleMapping;
typedef std::unordered_map<DBusSignalMatchRuleTuple, DBusSignalMatchRuleMapping> DBusSignalMatchRulesMap;
private:
void dispatch();
void suspendDispatching() const;
void resumeDispatching() const;
std::thread* dispatchThread_;
bool stopDispatching_;
std::weak_ptr<MainLoopContext> mainLoopContext_;
DispatchSource* dispatchSource_;
WatchContext* watchContext_;
mutable bool pauseDispatching_;
mutable std::mutex dispatchSuspendLock_;
void addLibdbusSignalMatchRule(const std::string& objectPath,
const std::string& interfaceName,
const std::string& interfaceMemberName,
const bool justAddFilter = false);
void removeLibdbusSignalMatchRule(const std::string& objectPath,
const std::string& interfaceName,
const std::string& interfaceMemberName);
void initLibdbusSignalFilterAfterConnect();
::DBusHandlerResult onLibdbusSignalFilter(::DBusMessage* libdbusMessage);
void initLibdbusObjectPathHandlerAfterConnect();
::DBusHandlerResult onLibdbusObjectPathMessage(::DBusMessage* libdbusMessage);
static void onLibdbusPendingCallNotifyThunk(::DBusPendingCall* libdbusPendingCall, void* userData);
static void onLibdbusDataCleanup(void* userData);
static ::DBusHandlerResult onLibdbusObjectPathMessageThunk(::DBusConnection* libdbusConnection,
::DBusMessage* libdbusMessage,
void* userData);
static ::DBusHandlerResult onLibdbusSignalFilterThunk(::DBusConnection* libdbusConnection,
::DBusMessage* libdbusMessage,
void* userData);
static dbus_bool_t onAddWatch(::DBusWatch* libdbusWatch, void* data);
static void onRemoveWatch(::DBusWatch* libdbusWatch, void* data);
static void onToggleWatch(::DBusWatch* libdbusWatch, void* data);
static dbus_bool_t onAddTimeout(::DBusTimeout* dbus_timeout, void* data);
static void onRemoveTimeout(::DBusTimeout* dbus_timeout, void* data);
static void onToggleTimeout(::DBusTimeout* dbus_timeout, void* data);
static void onWakeupMainContext(void* data);
void enforceAsynchronousTimeouts() const;
static const DBusObjectPathVTable* getDBusObjectPathVTable();
::DBusConnection* libdbusConnection_;
mutable std::mutex libdbusConnectionGuard_;
std::mutex signalGuard_;
std::mutex objectManagerGuard_;
std::mutex serviceRegistryGuard_;
BusType busType_;
std::weak_ptr<DBusServiceRegistry> dbusServiceRegistry_;
std::shared_ptr<DBusObjectManager> dbusObjectManager_;
DBusConnectionStatusEvent dbusConnectionStatusEvent_;
DBusSignalMatchRulesMap dbusSignalMatchRulesMap_;
DBusSignalHandlerTable dbusSignalHandlerTable_;
std::unordered_map<std::string, size_t> dbusObjectManagerSignalMatchRulesMap_;
std::unordered_multimap<std::string, DBusSignalHandler*> dbusObjectManagerSignalHandlerTable_;
std::mutex dbusObjectManagerSignalGuard_;
bool addObjectManagerSignalMatchRule(const std::string& dbusBusName);
bool removeObjectManagerSignalMatchRule(const std::string& dbusBusName);
bool addLibdbusSignalMatchRule(const std::string& dbusMatchRule);
bool removeLibdbusSignalMatchRule(const std::string& dbusMatchRule);
std::atomic_size_t libdbusSignalMatchRulesCount_;
// objectPath, referenceCount
typedef std::unordered_map<std::string, uint32_t> LibdbusRegisteredObjectPathHandlersTable;
LibdbusRegisteredObjectPathHandlersTable libdbusRegisteredObjectPaths_;
DBusObjectPathMessageHandler dbusObjectMessageHandler_;
mutable std::unordered_map<std::string, uint16_t> connectionNameCount_;
typedef std::pair<DBusPendingCall*, std::tuple<int, DBusMessageReplyAsyncHandler*, DBusMessage> > TimeoutMapElement;
mutable std::map<DBusPendingCall*, std::tuple<int, DBusMessageReplyAsyncHandler*, DBusMessage>> timeoutMap_;
mutable std::shared_ptr<std::thread> enforcerThread_;
mutable std::mutex enforceTimeoutMutex_;
};
} // namespace DBus
} // namespace CommonAPI
#endif // COMMONAPI_DBUS_DBUS_CONNECTION_H_
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