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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_INSTANCE_AVAILABILITY_STATUS_CHANGED_EVENT_H_
#define COMMONAPI_DBUS_DBUS_INSTANCE_AVAILABILITY_STATUS_CHANGED_EVENT_H_
#include <CommonAPI/ProxyManager.h>
#include "DBusProxy.h"
#include "DBusObjectManagerStub.h"
#include "DBusInstanceAvailabilityStatusChangedEvent.h"
#include <functional>
#include <future>
#include <string>
#include <vector>
namespace CommonAPI {
namespace DBus {
// TODO move logic to DBusServiceRegistry, now every proxy will deserialize the messages!
class DBusInstanceAvailabilityStatusChangedEvent:
public ProxyManager::InstanceAvailabilityStatusChangedEvent,
public DBusProxyConnection::DBusSignalHandler {
public:
DBusInstanceAvailabilityStatusChangedEvent(DBusProxy& dbusProxy, const char* interfaceName) :
dbusProxy_(dbusProxy),
observedInterfaceName_(interfaceName) {
}
virtual SubscriptionStatus onSignalDBusMessage(const DBusMessage& dbusMessage) {
if (dbusMessage.hasMemberName("InterfacesAdded")) {
onInterfacesAddedSignal(dbusMessage);
} else if (dbusMessage.hasMemberName("InterfacesRemoved")) {
onInterfacesRemovedSignal(dbusMessage);
}
return CommonAPI::SubscriptionStatus::RETAIN;
}
protected:
virtual void onFirstListenerAdded(const CancellableListener&) {
interfacesAddedSubscription_ = dbusProxy_.addSignalMemberHandler(
dbusProxy_.getDBusObjectPath(),
DBusObjectManagerStub::getInterfaceName(),
"InterfacesAdded",
"oa{sa{sv}}",
this);
interfacesRemovedSubscription_ = dbusProxy_.addSignalMemberHandler(
dbusProxy_.getDBusObjectPath(),
DBusObjectManagerStub::getInterfaceName(),
"InterfacesRemoved",
"oas",
this);
}
virtual void onLastListenerRemoved(const CancellableListener&) {
dbusProxy_.removeSignalMemberHandler(interfacesAddedSubscription_);
dbusProxy_.removeSignalMemberHandler(interfacesRemovedSubscription_);
}
private:
inline void onInterfacesAddedSignal(const DBusMessage& dbusMessage) {
DBusInputStream dbusInputStream(dbusMessage);
std::string dbusObjectPath;
DBusObjectManagerStub::DBusInterfacesAndPropertiesDict dbusInterfacesAndPropertiesDict;
dbusInputStream >> dbusObjectPath;
assert(!dbusInputStream.hasError());
dbusInputStream >> dbusInterfacesAndPropertiesDict;
assert(!dbusInputStream.hasError());
for (const auto& dbusInterfaceIterator : dbusInterfacesAndPropertiesDict) {
const std::string& dbusInterfaceName = dbusInterfaceIterator.first;
if(dbusInterfaceName == observedInterfaceName_) {
notifyInterfaceStatusChanged(dbusObjectPath, dbusInterfaceName, AvailabilityStatus::AVAILABLE);
}
}
}
inline void onInterfacesRemovedSignal(const DBusMessage& dbusMessage) {
DBusInputStream dbusInputStream(dbusMessage);
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& dbusObjectPath,
const std::string& dbusInterfaceName,
const AvailabilityStatus& availabilityStatus) {
std::string commonApiAddress;
DBusAddressTranslator::getInstance().searchForCommonAddress(
dbusInterfaceName,
dbusProxy_.getDBusBusName(),
dbusObjectPath,
commonApiAddress);
notifyListeners(commonApiAddress, availabilityStatus);
}
DBusProxy& dbusProxy_;
std::string observedInterfaceName_;
DBusProxyConnection::DBusSignalHandlerToken interfacesAddedSubscription_;
DBusProxyConnection::DBusSignalHandlerToken interfacesRemovedSubscription_;
};
} // namespace DBus
} // namespace CommonAPI
#endif // COMMONAPI_DBUS_DBUS_INSTANCE_AVAILABILITY_STATUS_CHANGED_EVENT_H_
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