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// Copyright (C) 2013-2015 Bayerische Motoren Werke Aktiengesellschaft (BMW AG)
// 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.hpp> can be included directly, this file may disappear or change contents."
#endif
#ifndef COMMONAPI_DBUS_DBUSINSTANCEAVAILABILITYSTATUSCHANGED_EVENT_HPP_
#define COMMONAPI_DBUS_DBUSINSTANCEAVAILABILITYSTATUSCHANGED_EVENT_HPP_
#include <functional>
#include <future>
#include <string>
#include <vector>
#include <CommonAPI/ProxyManager.hpp>
#include <CommonAPI/DBus/DBusAddressTranslator.hpp>
#include <CommonAPI/DBus/DBusProxy.hpp>
#include <CommonAPI/DBus/DBusObjectManagerStub.hpp>
#include <CommonAPI/DBus/DBusInstanceAvailabilityStatusChangedEvent.hpp>
#include <CommonAPI/DBus/DBusTypes.hpp>
namespace CommonAPI {
namespace DBus {
// TODO Check to move logic to DBusServiceRegistry, now every proxy will deserialize the messages!
class DBusInstanceAvailabilityStatusChangedEvent:
public ProxyManager::InstanceAvailabilityStatusChangedEvent,
public DBusProxyConnection::DBusSignalHandler {
public:
DBusInstanceAvailabilityStatusChangedEvent(DBusProxy &_proxy, const std::string &_interfaceName) :
proxy_(_proxy),
observedInterfaceName_(_interfaceName) {
}
virtual ~DBusInstanceAvailabilityStatusChangedEvent() {
proxy_.removeSignalMemberHandler(interfacesAddedSubscription_);
proxy_.removeSignalMemberHandler(interfacesRemovedSubscription_);
}
virtual void onSignalDBusMessage(const DBusMessage& dbusMessage) {
if (dbusMessage.hasMemberName("InterfacesAdded")) {
onInterfacesAddedSignal(dbusMessage);
} else if (dbusMessage.hasMemberName("InterfacesRemoved")) {
onInterfacesRemovedSignal(dbusMessage);
}
}
protected:
virtual void onFirstListenerAdded(const Listener&) {
interfacesAddedSubscription_ = proxy_.addSignalMemberHandler(
proxy_.getDBusAddress().getObjectPath(),
DBusObjectManagerStub::getInterfaceName(),
"InterfacesAdded",
"oa{sa{sv}}",
this,
false);
interfacesRemovedSubscription_ = proxy_.addSignalMemberHandler(
proxy_.getDBusAddress().getObjectPath(),
DBusObjectManagerStub::getInterfaceName(),
"InterfacesRemoved",
"oas",
this,
false);
}
virtual void onLastListenerRemoved(const Listener&) {
proxy_.removeSignalMemberHandler(interfacesAddedSubscription_);
proxy_.removeSignalMemberHandler(interfacesRemovedSubscription_);
}
private:
inline void onInterfacesAddedSignal(const DBusMessage &_message) {
DBusInputStream dbusInputStream(_message);
std::string dbusObjectPath;
std::string dbusInterfaceName;
DBusInterfacesAndPropertiesDict dbusInterfacesAndPropertiesDict;
dbusInputStream >> dbusObjectPath;
assert(!dbusInputStream.hasError());
dbusInputStream.beginReadMapOfSerializableStructs();
while (!dbusInputStream.readMapCompleted()) {
dbusInputStream.align(8);
dbusInputStream >> dbusInterfaceName;
dbusInputStream.skipMap();
assert(!dbusInputStream.hasError());
if(dbusInterfaceName == observedInterfaceName_) {
notifyInterfaceStatusChanged(dbusObjectPath, dbusInterfaceName, AvailabilityStatus::AVAILABLE);
}
}
dbusInputStream.endReadMapOfSerializableStructs();
}
inline void onInterfacesRemovedSignal(const DBusMessage &_message) {
DBusInputStream dbusInputStream(_message);
std::string dbusObjectPath;
std::vector<std::string> dbusInterfaceNames;
dbusInputStream >> dbusObjectPath;
assert(!dbusInputStream.hasError());
dbusInputStream >> dbusInterfaceNames;
assert(!dbusInputStream.hasError());
for (const auto& dbusInterfaceName : dbusInterfaceNames) {
if(dbusInterfaceName == observedInterfaceName_) {
notifyInterfaceStatusChanged(dbusObjectPath, dbusInterfaceName, AvailabilityStatus::NOT_AVAILABLE);
}
}
}
void notifyInterfaceStatusChanged(const std::string &_objectPath,
const std::string &_interfaceName,
const AvailabilityStatus &_availability) {
CommonAPI::Address itsAddress;
DBusAddress itsDBusAddress(proxy_.getDBusAddress().getService(),
_objectPath,
_interfaceName);
DBusAddressTranslator::get()->translate(itsDBusAddress, itsAddress);
notifyListeners(itsAddress.getAddress(), _availability);
}
DBusProxy &proxy_;
std::string observedInterfaceName_;
DBusProxyConnection::DBusSignalHandlerToken interfacesAddedSubscription_;
DBusProxyConnection::DBusSignalHandlerToken interfacesRemovedSubscription_;
};
} // namespace DBus
} // namespace CommonAPI
#endif // COMMONAPI_DBUS_DBUSINSTANCEAVAILABILITYSTATUSCHANGEDEVENT_HPP_
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