1 /***************************************************************************
2 * Copyright (C) 2005-08 by the Quassel Project *
3 * devel@quassel-irc.org *
5 * This program is free software; you can redistribute it and/or modify *
6 * it under the terms of the GNU General Public License as published by *
7 * the Free Software Foundation; either version 2 of the License, or *
8 * (at your option) version 3. *
10 * This program is distributed in the hope that it will be useful, *
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of *
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
13 * GNU General Public License for more details. *
15 * You should have received a copy of the GNU General Public License *
16 * along with this program; if not, write to the *
17 * Free Software Foundation, Inc., *
18 * 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. *
19 ***************************************************************************/
21 #include "signalproxy.h"
25 #include <QAbstractSocket>
26 #include <QHostAddress>
32 #include <QMetaMethod>
33 #include <QMetaProperty>
38 #include <QCoreApplication>
40 #include "syncableobject.h"
43 // ==================================================
45 // ==================================================
46 class PeerSignalEvent : public QEvent {
48 PeerSignalEvent(SignalProxy *sender, SignalProxy::RequestType requestType, const QVariantList ¶ms) : QEvent(QEvent::User), sender(sender), requestType(requestType), params(params) {}
50 SignalProxy::RequestType requestType;
54 // ==================================================
56 // ==================================================
57 class SignalRelay: public QObject {
58 /* Q_OBJECT is not necessary or even allowed, because we implement
59 qt_metacall ourselves (and don't use any other features of the meta
63 SignalRelay(SignalProxy* parent, QObject* source);
64 int qt_metacall(QMetaObject::Call _c, int _id, void **_a);
66 void attachSignal(int methodId, const QByteArray &func);
68 void setSynchronize(bool);
69 bool synchronize() const;
74 bool isSyncMethod(int i);
78 QMultiHash<int, QByteArray> sigNames;
82 SignalRelay::SignalRelay(SignalProxy* parent, QObject* source)
88 QObject::connect(source, SIGNAL(destroyed()), parent, SLOT(detachSender()));
91 int SignalRelay::qt_metacall(QMetaObject::Call _c, int _id, void **_a) {
92 _id = QObject::qt_metacall(_c, _id, _a);
95 if(_c == QMetaObject::InvokeMetaMethod) {
96 if(sigNames.contains(_id) || synchronize()) {
97 const QList<int> &argTypes = proxy->argTypes(caller, _id);
99 int n = argTypes.size();
100 for(int i=0; i<n; i++) {
101 if(argTypes[i] == 0) {
102 qWarning() << "SignalRelay::qt_metacall(): received invalid data for argument number" << i << "of signal" << QString("%1::%2").arg(caller->metaObject()->className()).arg(caller->metaObject()->method(_id).signature());
103 qWarning() << " - make sure all your data types are known by the Qt MetaSystem";
106 params.append(QVariant(argTypes[i], _a[i+1]));
108 QMultiHash<int, QByteArray>::const_iterator funcIter = sigNames.constFind(_id);
109 while(funcIter != sigNames.constEnd() && funcIter.key() == _id) {
110 proxy->dispatchSignal(SignalProxy::RpcCall, QVariantList() << funcIter.value() << params);
114 // dispatch Sync Signal if necessary
115 QByteArray signature(caller->metaObject()->method(_id).signature());
116 SyncableObject *syncObject = qobject_cast<SyncableObject *>(caller);
117 if(synchronize() && proxy->syncMap(syncObject).contains(signature)) {
118 //qDebug() << "__SYNC__ >>>"
119 // << caller->metaObject()->className()
120 // << caller->objectName()
123 // params.prepend(QVariant(_id));
124 params.prepend(signature);
125 params.prepend(syncObject->objectName());
126 params.prepend(syncObject->syncMetaObject()->className());
127 proxy->dispatchSignal(SignalProxy::Sync, params);
130 _id -= QObject::staticMetaObject.methodCount();
135 void SignalRelay::setSynchronize(bool sync) {
136 SyncableObject *syncObject = qobject_cast<SyncableObject *>(caller);
140 const QMetaObject *meta = syncObject->syncMetaObject();
143 for(int i = 0; i < meta->methodCount(); i++ ) {
145 QMetaObject::connect(caller, i, this, QObject::staticMetaObject.methodCount() + i);
147 } else if (_sync && !sync) {
149 for(int i = 0; i < meta->methodCount(); i++ ) {
151 QMetaObject::disconnect(caller, i, this, QObject::staticMetaObject.methodCount() + i);
157 bool SignalRelay::isSyncMethod(int i) {
158 SyncableObject *syncObject = qobject_cast<SyncableObject *>(caller);
162 QByteArray signature = syncObject->syncMetaObject()->method(i).signature();
163 if(!proxy->syncMap(syncObject).contains(signature))
166 if(proxy->proxyMode() == SignalProxy::Server && !signature.contains("Requested"))
169 if(proxy->proxyMode() == SignalProxy::Client && signature.contains("Requested"))
175 bool SignalRelay::synchronize() const {
179 int SignalRelay::sigCount() const {
180 // only for debuging purpose
181 return sigNames.count();
184 void SignalRelay::attachSignal(int methodId, const QByteArray &func) {
185 // we ride without safetybelts here... all checking for valid method etc pp has to be done by the caller
186 // all connected methodIds are offset by the standard methodCount of QObject
187 if(!sigNames.contains(methodId))
188 QMetaObject::connect(caller, methodId, this, QObject::staticMetaObject.methodCount() + methodId);
191 if(!func.isEmpty()) {
192 fn = QMetaObject::normalizedSignature(func);
194 fn = QByteArray("2") + caller->metaObject()->method(methodId).signature();
196 sigNames.insert(methodId, fn);
199 // ==================================================
201 // ==================================================
202 void SignalProxy::IODevicePeer::dispatchSignal(const RequestType &requestType, const QVariantList ¶ms) {
203 QVariantList packedFunc;
204 packedFunc << (qint16)requestType
206 dispatchPackedFunc(QVariant(packedFunc));
209 QString SignalProxy::IODevicePeer::address() const {
210 QAbstractSocket *socket = qobject_cast<QAbstractSocket *>(_device);
212 return socket->peerAddress().toString();
217 void SignalProxy::SignalProxyPeer::dispatchSignal(const RequestType &requestType, const QVariantList ¶ms) {
218 Qt::ConnectionType type = QThread::currentThread() == receiver->thread()
219 ? Qt::DirectConnection
220 : Qt::QueuedConnection;
222 if(type == Qt::DirectConnection) {
223 receiver->receivePeerSignal(sender, requestType, params);
225 QCoreApplication::postEvent(receiver, new PeerSignalEvent(sender, requestType, params));
229 // ==================================================
231 // ==================================================
232 SignalProxy::SignalProxy(QObject* parent)
235 setProxyMode(Client);
239 SignalProxy::SignalProxy(ProxyMode mode, QObject* parent)
246 SignalProxy::SignalProxy(ProxyMode mode, QIODevice* device, QObject* parent)
254 SignalProxy::~SignalProxy() {
255 QList<QObject*> senders = _relayHash.keys();
256 foreach(QObject* sender, senders)
257 detachObject(sender);
261 void SignalProxy::setProxyMode(ProxyMode mode) {
262 PeerHash::iterator peer = _peers.begin();
263 while(peer != _peers.end()) {
264 if((*peer)->type() != AbstractPeer::IODevicePeer) {
265 IODevicePeer *ioPeer = static_cast<IODevicePeer *>(*peer);
266 if(ioPeer->isOpen()) {
267 qWarning() << "SignalProxy: Cannot change proxy mode while connected";
271 if((*peer)->type() != AbstractPeer::SignalProxyPeer) {
272 qWarning() << "SignalProxy: Cannot change proxy mode while connected to another internal SignalProxy";
285 void SignalProxy::init() {
286 connect(&_heartBeatTimer, SIGNAL(timeout()), this, SLOT(sendHeartBeat()));
287 _heartBeatTimer.start(30 * 1000);
290 void SignalProxy::initServer() {
293 void SignalProxy::initClient() {
294 attachSlot("__objectRenamed__", this, SLOT(objectRenamed(QByteArray, QString, QString)));
297 bool SignalProxy::addPeer(QIODevice* iodev) {
301 if(_peers.contains(iodev))
304 if(proxyMode() == Client && !_peers.isEmpty()) {
305 qWarning("SignalProxy: only one peer allowed in client mode!");
310 qWarning("SignalProxy::the device you passed is not open!");
312 connect(iodev, SIGNAL(disconnected()), this, SLOT(removePeerBySender()));
313 connect(iodev, SIGNAL(readyRead()), this, SLOT(dataAvailable()));
315 QAbstractSocket* sock = qobject_cast<QAbstractSocket*>(iodev);
317 connect(sock, SIGNAL(disconnected()), this, SLOT(removePeerBySender()));
321 sock->setParent(this);
323 _peers[iodev] = new IODevicePeer(iodev, iodev->property("UseCompression").toBool());
325 if(_peers.count() == 1)
331 bool SignalProxy::addPeer(SignalProxy* proxy) {
335 if(proxyMode() == proxy->proxyMode()) {
336 qWarning() << "SignalProxy::addPeer(): adding a SignalProxy as peer requires one proxy to be server and one client!";
340 if(_peers.contains(proxy)) {
344 if(proxyMode() == Client && !_peers.isEmpty()) {
345 qWarning("SignalProxy: only one peer allowed in client mode!");
349 _peers[proxy] = new SignalProxyPeer(this, proxy);
350 proxy->addPeer(this);
352 if(_peers.count() == 1)
358 void SignalProxy::removeAllPeers() {
359 Q_ASSERT(proxyMode() == Server || _peers.count() <= 1);
360 // wee need to copy that list since we modify it in the loop
361 QList<QObject *> peers = _peers.keys();
362 foreach(QObject *peer, peers) {
367 void SignalProxy::removePeer(QObject* dev) {
368 if(_peers.isEmpty()) {
369 qWarning() << "SignalProxy::removePeer(): No peers in use!";
374 if(!_peers.contains(dev)) {
375 qWarning() << "SignalProxy: unknown Peer" << dev;
379 AbstractPeer *peer = _peers[dev];
382 disconnect(dev, 0, this, 0);
383 if(peer->type() == AbstractPeer::IODevicePeer)
384 emit peerRemoved(static_cast<QIODevice *>(dev));
386 if(peer->type() == AbstractPeer::SignalProxyPeer) {
387 SignalProxy *proxy = static_cast<SignalProxy *>(dev);
388 if(proxy->_peers.contains(this))
389 proxy->removePeer(this);
392 if(dev->parent() == this)
401 void SignalProxy::removePeerBySender() {
402 removePeer(sender());
405 void SignalProxy::objectRenamed(const QString &newname, const QString &oldname) {
406 SyncableObject *syncObject = qobject_cast<SyncableObject *>(sender());
407 const QMetaObject *meta = syncObject->metaObject();
408 const QByteArray className(meta->className());
409 objectRenamed(className, newname, oldname);
411 if(proxyMode() == Client)
415 params << "__objectRenamed__" << className << newname << oldname;
416 dispatchSignal(RpcCall, params);
419 void SignalProxy::objectRenamed(const QByteArray &classname, const QString &newname, const QString &oldname) {
420 if(_syncSlave.contains(classname) && _syncSlave[classname].contains(oldname) && oldname != newname) {
421 SyncableObject *obj = _syncSlave[classname][newname] = _syncSlave[classname].take(oldname);
426 void SignalProxy::setArgTypes(QObject* obj, int methodId) {
427 const QMetaObject *meta = metaObject(obj);
428 QList<QByteArray> p = meta->method(methodId).parameterTypes();
431 for(int i=0; i<ct; i++)
432 argTypes.append(QMetaType::type(p.value(i)));
434 Q_ASSERT(!_classInfo[meta]->argTypes.contains(methodId));
435 _classInfo[meta]->argTypes[methodId] = argTypes;
438 const QList<int> &SignalProxy::argTypes(QObject *obj, int methodId) {
439 const QMetaObject *meta = metaObject(obj);
440 Q_ASSERT(_classInfo.contains(meta));
441 if(!_classInfo[meta]->argTypes.contains(methodId))
442 setArgTypes(obj, methodId);
443 return _classInfo[meta]->argTypes[methodId];
446 void SignalProxy::setReturnType(QObject *obj, int methodId) {
447 const QMetaObject *meta = metaObject(obj);
448 int returnType = QMetaType::type(meta->method(methodId).typeName());
450 Q_ASSERT(!_classInfo[meta]->returnType.contains(methodId));
451 _classInfo[meta]->returnType[methodId] = returnType;
454 const int &SignalProxy::returnType(QObject *obj, int methodId) {
455 const QMetaObject *meta = metaObject(obj);
456 Q_ASSERT(_classInfo.contains(meta));
457 if(!_classInfo[meta]->returnType.contains(methodId))
458 setReturnType(obj, methodId);
459 return _classInfo[meta]->returnType[methodId];
462 void SignalProxy::setMinArgCount(QObject *obj, int methodId) {
463 const QMetaObject *meta = metaObject(obj);
464 QString signature(meta->method(methodId).signature());
465 int minCount = meta->method(methodId).parameterTypes().count() - signature.count("=");
466 Q_ASSERT(!_classInfo[meta]->minArgCount.contains(methodId));
467 _classInfo[meta]->minArgCount[methodId] = minCount;
470 const int &SignalProxy::minArgCount(QObject *obj, int methodId) {
471 const QMetaObject *meta = metaObject(obj);
472 Q_ASSERT(_classInfo.contains(meta));
473 if(!_classInfo[meta]->minArgCount.contains(methodId))
474 setMinArgCount(obj, methodId);
475 return _classInfo[meta]->minArgCount[methodId];
478 void SignalProxy::setMethodName(QObject *obj, int methodId) {
479 const QMetaObject *meta = metaObject(obj);
480 QByteArray method(::methodName(meta->method(methodId)));
481 Q_ASSERT(!_classInfo[meta]->methodNames.contains(methodId));
482 _classInfo[meta]->methodNames[methodId] = method;
485 const QByteArray &SignalProxy::methodName(QObject *obj, int methodId) {
486 const QMetaObject *meta = metaObject(obj);
487 Q_ASSERT(_classInfo.contains(meta));
488 if(!_classInfo[meta]->methodNames.contains(methodId))
489 setMethodName(obj, methodId);
490 return _classInfo[meta]->methodNames[methodId];
494 void SignalProxy::setSyncMap(SyncableObject *obj) {
495 const QMetaObject *meta = obj->syncMetaObject();
496 QHash<QByteArray, int> syncMap;
498 QList<int> slotIndexes;
499 for(int i = 0; i < meta->methodCount(); i++) {
500 if(meta->method(i).methodType() == QMetaMethod::Slot)
504 // we're faking sync pairs for sync replies
505 QByteArray slotSignature;
506 foreach(int slotIdx, slotIndexes) {
507 slotSignature = QByteArray(meta->method(slotIdx).signature());
508 if(!slotSignature.startsWith("receive"))
510 syncMap[slotSignature] = slotIdx;
513 QMetaMethod signal, slot;
515 for(int signalIdx = 0; signalIdx < meta->methodCount(); signalIdx++) {
516 signal = meta->method(signalIdx);
517 if(signal.methodType() != QMetaMethod::Signal)
521 foreach(int slotIdx, slotIndexes) {
522 slot = meta->method(slotIdx);
523 if(methodsMatch(signal, slot)) {
529 slotIndexes.removeAt(slotIndexes.indexOf(matchIdx));
530 syncMap[QByteArray(signal.signature())] = matchIdx;
534 Q_ASSERT(_classInfo[meta]->syncMap.isEmpty());
535 _classInfo[meta]->syncMap = syncMap;
538 const QHash<QByteArray,int> &SignalProxy::syncMap(SyncableObject *obj) {
539 const QMetaObject *meta = obj->syncMetaObject();
540 Q_ASSERT(_classInfo.contains(meta));
541 if(_classInfo[meta]->syncMap.isEmpty())
543 return _classInfo[meta]->syncMap;
546 void SignalProxy::setReceiveMap(SyncableObject *obj) {
547 const QMetaObject *meta = obj->syncMetaObject();
548 Q_ASSERT(_classInfo.contains(meta));
550 QHash<int, int> receiveMap;
552 QMetaMethod requestSlot;
553 QByteArray returnTypeName;
554 QByteArray signature;
555 QByteArray methodName;
559 const int methodCount = meta->methodCount();
560 for(int i = 0; i < methodCount; i++) {
561 requestSlot = meta->method(i);
562 if(requestSlot.methodType() != QMetaMethod::Slot)
565 returnTypeName = requestSlot.typeName();
566 if(QMetaType::Void == (QMetaType::Type)returnType(obj, i))
569 signature = QByteArray(requestSlot.signature());
570 if(!signature.startsWith("request"))
573 paramsPos = signature.indexOf('(');
577 methodName = signature.left(paramsPos);
578 params = signature.mid(paramsPos);
580 methodName = methodName.replace("request", "receive");
581 params = params.left(params.count() - 1) + ", " + returnTypeName + ")";
583 signature = QMetaObject::normalizedSignature(methodName + params);
584 receiverId = meta->indexOfSlot(signature);
586 if(receiverId == -1) {
587 signature = QMetaObject::normalizedSignature(methodName + "(" + returnTypeName + ")");
588 receiverId = meta->indexOfSlot(signature);
592 receiveMap[i] = receiverId;
594 _classInfo[meta]->receiveMap = receiveMap;
597 const QHash<int, int> &SignalProxy::receiveMap(SyncableObject *obj) {
598 const QMetaObject *meta = obj->syncMetaObject();
599 Q_ASSERT(_classInfo.contains(meta));
600 if(_classInfo[meta]->receiveMap.isEmpty())
602 return _classInfo[meta]->receiveMap;
605 void SignalProxy::setUpdatedRemotelyId(SyncableObject *obj) {
606 const QMetaObject *meta = obj->syncMetaObject();
607 Q_ASSERT(_classInfo.contains(meta));
608 _classInfo[meta]->updatedRemotelyId = meta->indexOfSignal("updatedRemotely()");
611 int SignalProxy::updatedRemotelyId(SyncableObject *obj) {
612 Q_ASSERT(_classInfo.contains(obj->syncMetaObject()));
613 return _classInfo[obj->syncMetaObject()]->updatedRemotelyId;
616 const QMetaObject *SignalProxy::metaObject(QObject *obj) {
617 if(SyncableObject *syncObject = qobject_cast<SyncableObject *>(obj))
618 return syncObject->syncMetaObject();
620 return obj->metaObject();
623 void SignalProxy::createClassInfo(QObject *obj) {
624 const QMetaObject *meta = metaObject(obj);
625 if(_classInfo.contains(meta))
628 ClassInfo *classInfo = new ClassInfo();
629 _classInfo[meta] = classInfo;
632 bool SignalProxy::attachSignal(QObject* sender, const char* signal, const QByteArray& sigName) {
633 const QMetaObject* meta = metaObject(sender);
634 QByteArray sig(meta->normalizedSignature(signal).mid(1));
635 int methodId = meta->indexOfMethod(sig.constData());
636 if(methodId == -1 || meta->method(methodId).methodType() != QMetaMethod::Signal) {
637 qWarning() << "SignalProxy::attachSignal(): No such signal" << signal;
641 createClassInfo(sender);
644 if(_relayHash.contains(sender))
645 relay = _relayHash[sender];
647 relay = _relayHash[sender] = new SignalRelay(this, sender);
649 relay->attachSignal(methodId, sigName);
655 bool SignalProxy::attachSlot(const QByteArray& sigName, QObject* recv, const char* slot) {
656 const QMetaObject* meta = recv->metaObject();
657 int methodId = meta->indexOfMethod(meta->normalizedSignature(slot).mid(1));
658 if(methodId == -1 || meta->method(methodId).methodType() == QMetaMethod::Method) {
659 qWarning() << "SignalProxy::attachSlot(): No such slot" << slot;
663 createClassInfo(recv);
665 QByteArray funcName = QMetaObject::normalizedSignature(sigName.constData());
666 _attachedSlots.insert(funcName, qMakePair(recv, methodId));
668 QObject::disconnect(recv, SIGNAL(destroyed()), this, SLOT(detachSender()));
669 QObject::connect(recv, SIGNAL(destroyed()), this, SLOT(detachSender()));
673 void SignalProxy::synchronize(SyncableObject *obj) {
674 createClassInfo(obj);
675 setUpdatedRemotelyId(obj);
677 // attaching all the Signals
679 if(_relayHash.contains(obj))
680 relay = _relayHash[obj];
682 relay = _relayHash[obj] = new SignalRelay(this, obj);
684 relay->setSynchronize(true);
686 // attaching as slave to receive sync Calls
687 QByteArray className(obj->syncMetaObject()->className());
688 _syncSlave[className][obj->objectName()] = obj;
690 if(proxyMode() == Server) {
691 connect(obj, SIGNAL(objectRenamed(QString, QString)), this, SLOT(objectRenamed(QString, QString)));
692 obj->setInitialized();
693 emit objectInitialized(obj);
695 if(obj->isInitialized())
696 emit objectInitialized(obj);
702 void SignalProxy::requestInit(SyncableObject *obj) {
703 if(proxyMode() == Server || obj->isInitialized())
707 params << obj->syncMetaObject()->className()
708 << obj->objectName();
709 dispatchSignal(InitRequest, params);
712 void SignalProxy::detachSender() {
713 detachObject(sender());
716 void SignalProxy::detachObject(QObject* obj) {
719 stopSync(static_cast<SyncableObject *>(obj));
722 void SignalProxy::detachSignals(QObject* sender) {
723 if(!_relayHash.contains(sender))
725 _relayHash.take(sender)->deleteLater();
728 void SignalProxy::detachSlots(QObject* receiver) {
729 SlotHash::iterator slotIter = _attachedSlots.begin();
730 while(slotIter != _attachedSlots.end()) {
731 if(slotIter.value().first == receiver) {
732 slotIter = _attachedSlots.erase(slotIter);
738 void SignalProxy::stopSync(SyncableObject* obj) {
739 if(_relayHash.contains(obj))
740 _relayHash[obj]->setSynchronize(false);
742 // we can't use a className here, since it might be effed up, if we receive the call as a result of a decon
743 // gladly the objectName() is still valid. So we have only to iterate over the classes not each instance! *sigh*
744 QHash<QByteArray, ObjectId>::iterator classIter = _syncSlave.begin();
745 while(classIter != _syncSlave.end()) {
746 if(classIter->contains(obj->objectName()) && classIter.value()[obj->objectName()] == obj) {
747 classIter->remove(obj->objectName());
754 void SignalProxy::dispatchSignal(const RequestType &requestType, const QVariantList ¶ms) {
755 QVariant packedFunc(QVariantList() << (qint16)requestType << params);
756 PeerHash::iterator peer = _peers.begin();
757 while(peer != _peers.end()) {
758 switch((*peer)->type()) {
759 case AbstractPeer::IODevicePeer:
761 IODevicePeer *ioPeer = static_cast<IODevicePeer *>(*peer);
762 ioPeer->dispatchPackedFunc(packedFunc);
765 case AbstractPeer::SignalProxyPeer:
766 (*peer)->dispatchSignal(requestType, params);
769 Q_ASSERT(false); // there shouldn't be any peers with wrong / unknown type
775 void SignalProxy::receivePackedFunc(AbstractPeer *sender, const QVariant &packedFunc) {
776 QVariantList params(packedFunc.toList());
778 if(params.isEmpty()) {
779 qWarning() << "SignalProxy::receivePeerSignal(): received incompatible Data:" << packedFunc;
783 RequestType requestType = (RequestType)params.takeFirst().value<int>();
784 receivePeerSignal(sender, requestType, params);
787 void SignalProxy::receivePeerSignal(AbstractPeer *sender, const RequestType &requestType, const QVariantList ¶ms) {
788 switch(requestType) {
791 qWarning() << "SignalProxy::receivePeerSignal(): received empty RPC-Call";
793 handleSignal(params);
794 //handleSignal(params.takeFirst().toByteArray(), params);
798 handleSync(sender, params);
802 handleInitRequest(sender, params);
806 handleInitData(sender, params);
810 receiveHeartBeat(sender, params);
814 receiveHeartBeatReply(sender, params);
818 qWarning() << "SignalProxy::receivePeerSignal(): received undefined CallType" << requestType << params;
822 void SignalProxy::receivePeerSignal(SignalProxy *sender, const RequestType &requestType, const QVariantList ¶ms) {
823 if(!_peers.contains(sender)) {
824 // we output only the pointer value. otherwise Qt would try to pretty print. As the object might already been destroyed, this is not a good idea.
825 qWarning() << "SignalProxy::receivePeerSignal(): received Signal from unknown Proxy" << reinterpret_cast<void *>(sender);
828 receivePeerSignal(_peers[sender], requestType, params);
831 void SignalProxy::handleSync(AbstractPeer *sender, QVariantList params) {
832 if(params.count() < 3) {
833 qWarning() << "received invalid Sync call" << params;
837 QByteArray className = params.takeFirst().toByteArray();
838 QString objectName = params.takeFirst().toString();
839 QByteArray signal = params.takeFirst().toByteArray();
841 if(!_syncSlave.contains(className) || !_syncSlave[className].contains(objectName)) {
842 qWarning() << QString("no registered receiver for sync call: %1::%2 (objectName=\"%3\"). Params are:").arg(QString(className)).arg(QString(signal)).arg(objectName)
847 SyncableObject *receiver = _syncSlave[className][objectName];
848 if(!syncMap(receiver).contains(signal)) {
849 qWarning() << QString("no matching slot for sync call: %1::%2 (objectName=\"%3\"). Params are:").arg(QString(className)).arg(QString(signal)).arg(objectName)
854 int slotId = syncMap(receiver)[signal];
856 QVariant returnValue((QVariant::Type)returnType(receiver, slotId));
857 if(!invokeSlot(receiver, slotId, params, returnValue)) {
858 qWarning("SignalProxy::handleSync(): invokeMethod for \"%s\" failed ", methodName(receiver, slotId).constData());
862 if(returnValue.type() != QVariant::Invalid && receiveMap(receiver).contains(slotId)) {
863 int receiverId = receiveMap(receiver)[slotId];
864 QVariantList returnParams;
865 returnParams << className
867 << QByteArray(receiver->metaObject()->method(receiverId).signature());
868 if(argTypes(receiver, receiverId).count() > 1)
869 returnParams << params;
870 returnParams << returnValue;
871 sender->dispatchSignal(Sync, returnParams);
874 // send emit update signal
875 invokeSlot(receiver, updatedRemotelyId(receiver));
878 void SignalProxy::handleInitRequest(AbstractPeer *sender, const QVariantList ¶ms) {
879 if(params.count() != 2) {
880 qWarning() << "SignalProxy::handleInitRequest() received initRequest with invalid param Count:"
885 QByteArray className(params[0].toByteArray());
886 QString objectName(params[1].toString());
888 if(!_syncSlave.contains(className)) {
889 qWarning() << "SignalProxy::handleInitRequest() received initRequest for unregistered Class:"
894 if(!_syncSlave[className].contains(objectName)) {
895 qWarning() << "SignalProxy::handleInitRequest() received initRequest for unregistered Object:"
896 << className << objectName;
900 SyncableObject *obj = _syncSlave[className][objectName];
902 QVariantList params_;
907 sender->dispatchSignal(InitData, params_);
910 void SignalProxy::handleInitData(AbstractPeer *sender, const QVariantList ¶ms) {
912 if(params.count() != 3) {
913 qWarning() << "SignalProxy::handleInitData() received initData with invalid param Count:"
918 QByteArray className(params[0].toByteArray());
919 QString objectName(params[1].toString());
920 QVariantMap propertyMap(params[2].toMap());
922 if(!_syncSlave.contains(className)) {
923 qWarning() << "SignalProxy::handleInitData() received initData for unregistered Class:"
928 if(!_syncSlave[className].contains(objectName)) {
929 qWarning() << "SignalProxy::handleInitData() received initData for unregistered Object:"
930 << className << objectName;
934 SyncableObject *obj = _syncSlave[className][objectName];
935 setInitData(obj, propertyMap);
938 //void SignalProxy::handleSignal(const QByteArray &funcName, const QVariantList ¶ms) {
939 void SignalProxy::handleSignal(const QVariantList &data) {
940 QVariantList params = data;
941 QByteArray funcName = params.takeFirst().toByteArray();
945 SlotHash::const_iterator slot = _attachedSlots.constFind(funcName);
946 while(slot != _attachedSlots.constEnd() && slot.key() == funcName) {
947 receiver = (*slot).first;
948 methodId = (*slot).second;
949 if(!invokeSlot(receiver, methodId, params))
950 qWarning("SignalProxy::handleSignal(): invokeMethod for \"%s\" failed ", methodName(receiver, methodId).constData());
955 bool SignalProxy::invokeSlot(QObject *receiver, int methodId, const QVariantList ¶ms, QVariant &returnValue) {
956 const QList<int> args = argTypes(receiver, methodId);
957 const int numArgs = params.count() < args.count()
961 if(minArgCount(receiver, methodId) > params.count()) {
962 qWarning() << "SignalProxy::invokeSlot(): not enough params to invoke" << methodName(receiver, methodId);
966 void *_a[] = {0, // return type...
967 0, 0, 0, 0 , 0, // and 10 args - that's the max size qt can handle with signals and slots
970 // check for argument compatibility and build params array
971 for(int i = 0; i < numArgs; i++) {
972 if(!params[i].isValid()) {
973 qWarning() << "SignalProxy::invokeSlot(): received invalid data for argument number" << i << "of method" << QString("%1::%2()").arg(receiver->metaObject()->className()).arg(receiver->metaObject()->method(methodId).signature());
974 qWarning() << " - make sure all your data types are known by the Qt MetaSystem";
977 if(args[i] != QMetaType::type(params[i].typeName())) {
978 qWarning() << "SignalProxy::invokeSlot(): incompatible param types to invoke" << methodName(receiver, methodId);
981 _a[i+1] = const_cast<void *>(params[i].constData());
984 if(returnValue.type() != QVariant::Invalid)
985 _a[0] = const_cast<void *>(returnValue.constData());
987 Qt::ConnectionType type = QThread::currentThread() == receiver->thread()
988 ? Qt::DirectConnection
989 : Qt::QueuedConnection;
991 if (type == Qt::DirectConnection) {
992 return receiver->qt_metacall(QMetaObject::InvokeMetaMethod, methodId, _a) < 0;
994 qWarning() << "Queued Connections are not implemented yet";
995 // note to self: qmetaobject.cpp:990 ff
1001 bool SignalProxy::invokeSlot(QObject *receiver, int methodId, const QVariantList ¶ms) {
1003 return invokeSlot(receiver, methodId, params, ret);
1006 void SignalProxy::dataAvailable() {
1007 // yet again. it's a private slot. no need for checks.
1008 QIODevice* ioDev = qobject_cast<QIODevice* >(sender());
1009 Q_ASSERT(_peers.contains(ioDev) && _peers[ioDev]->type() == AbstractPeer::IODevicePeer);
1010 IODevicePeer *peer = static_cast<IODevicePeer *>(_peers[ioDev]);
1012 while(peer->readData(var))
1013 receivePackedFunc(peer, var);
1016 void SignalProxy::writeDataToDevice(QIODevice *dev, const QVariant &item, bool compressed) {
1017 QAbstractSocket* sock = qobject_cast<QAbstractSocket*>(dev);
1018 if(!dev->isOpen() || (sock && sock->state()!=QAbstractSocket::ConnectedState)) {
1019 qWarning("SignalProxy: Can't call write on a closed device");
1024 QDataStream out(&block, QIODevice::WriteOnly);
1025 out.setVersion(QDataStream::Qt_4_2);
1030 QDataStream itemStream(&rawItem, QIODevice::WriteOnly);
1032 itemStream.setVersion(QDataStream::Qt_4_2);
1035 rawItem = qCompress(rawItem);
1042 out.device()->seek(0);
1043 out << (quint32)(block.size() - sizeof(quint32));
1048 bool SignalProxy::readDataFromDevice(QIODevice *dev, quint32 &blockSize, QVariant &item, bool compressed) {
1049 QDataStream in(dev);
1050 in.setVersion(QDataStream::Qt_4_2);
1052 if(blockSize == 0) {
1053 if(dev->bytesAvailable() < (int)sizeof(quint32)) return false;
1057 if(blockSize > 1 << 22) {
1058 disconnectDevice(dev, tr("Client tried to send package larger than max package size!"));
1062 if(blockSize == 0) {
1063 disconnectDevice(dev, tr("Client tried to send 0 byte package!"));
1067 if(dev->bytesAvailable() < blockSize)
1076 int nbytes = rawItem.size();
1078 const char *data = rawItem.constData();
1079 if(nbytes < 4 || (data[0]!=0 || data[1]!=0 || data[2]!=0 || data[3]!=0)) {
1080 disconnectDevice(dev, tr("Client sent corrupted compressed data!"));
1085 rawItem = qUncompress(rawItem);
1087 QDataStream itemStream(&rawItem, QIODevice::ReadOnly);
1088 itemStream.setVersion(QDataStream::Qt_4_2);
1094 if(!item.isValid()) {
1095 disconnectDevice(dev, tr("Client sent corrupt data: unable to load QVariant!"));
1102 bool SignalProxy::methodsMatch(const QMetaMethod &signal, const QMetaMethod &slot) const {
1103 // if we don't even have the same basename it's a sure NO
1104 if(methodBaseName(signal) != methodBaseName(slot))
1107 // are the signatures compatible?
1108 if(!QObject::staticMetaObject.checkConnectArgs(signal.signature(), slot.signature()))
1111 // we take an educated guess if the signals and slots match
1112 QString signalsuffix = ::methodName(signal).mid(QString(::methodName(signal)).lastIndexOf(QRegExp("[A-Z]"))).toLower();
1113 QString slotprefix = ::methodName(slot).left(QString(::methodName(slot)).indexOf(QRegExp("[A-Z]"))).toLower();
1115 uint sizediff = qAbs(slotprefix.size() - signalsuffix.size());
1116 int ratio = editingDistance(slotprefix, signalsuffix) - sizediff;
1120 QString SignalProxy::methodBaseName(const QMetaMethod &method) {
1121 QString methodname = QString(method.signature()).section("(", 0, 0);
1123 // determine where we have to chop:
1125 if(method.methodType() == QMetaMethod::Slot) {
1126 // we take evertyhing from the first uppercase char if it's slot
1127 upperCharPos = methodname.indexOf(QRegExp("[A-Z]"));
1128 if(upperCharPos == -1)
1130 methodname = methodname.mid(upperCharPos);
1132 // and if it's a signal we discard everything from the last uppercase char
1133 upperCharPos = methodname.lastIndexOf(QRegExp("[A-Z]"));
1134 if(upperCharPos == -1)
1136 methodname = methodname.left(upperCharPos);
1139 methodname[0] = methodname[0].toUpper();
1144 QVariantMap SignalProxy::initData(SyncableObject *obj) const {
1145 return obj->toVariantMap();
1148 void SignalProxy::setInitData(SyncableObject *obj, const QVariantMap &properties) {
1149 if(obj->isInitialized())
1151 obj->fromVariantMap(properties);
1152 obj->setInitialized();
1153 emit objectInitialized(obj);
1154 invokeSlot(obj, updatedRemotelyId(obj));
1157 void SignalProxy::sendHeartBeat() {
1158 QVariantList heartBeatParams;
1159 heartBeatParams << QTime::currentTime();
1160 PeerHash::iterator peer = _peers.begin();
1161 while(peer != _peers.end()) {
1162 if((*peer)->type() == AbstractPeer::IODevicePeer) {
1163 IODevicePeer *ioPeer = static_cast<IODevicePeer *>(*peer);
1164 ioPeer->dispatchSignal(SignalProxy::HeartBeat, heartBeatParams);
1165 if(ioPeer->sentHeartBeats > 0) {
1166 updateLag(ioPeer, ioPeer->sentHeartBeats * _heartBeatTimer.interval());
1168 if(ioPeer->sentHeartBeats > 1) {
1169 qWarning() << "SignalProxy: Disconnecting peer:" << ioPeer->address()
1170 << "(didn't receive a heartbeat for over" << ioPeer->sentHeartBeats * _heartBeatTimer.interval() / 1000 << "seconds)";
1173 ioPeer->sentHeartBeats++;
1180 void SignalProxy::receiveHeartBeat(AbstractPeer *peer, const QVariantList ¶ms) {
1181 peer->dispatchSignal(SignalProxy::HeartBeatReply, params);
1184 void SignalProxy::receiveHeartBeatReply(AbstractPeer *peer, const QVariantList ¶ms) {
1185 if(peer->type() != AbstractPeer::IODevicePeer) {
1186 qWarning() << "SignalProxy::receiveHeartBeatReply: received heart beat from a non IODevicePeer!";
1190 IODevicePeer *ioPeer = static_cast<IODevicePeer *>(peer);
1191 ioPeer->sentHeartBeats = 0;
1193 if(params.isEmpty()) {
1194 qWarning() << "SignalProxy: received heart beat reply with less params then sent from:" << ioPeer->address();
1198 QTime sendTime = params[0].value<QTime>();
1199 updateLag(ioPeer, sendTime.msecsTo(QTime::currentTime()) / 2);
1202 void SignalProxy::customEvent(QEvent *event) {
1203 switch(event->type()) {
1206 PeerSignalEvent *sig = static_cast<PeerSignalEvent *>(event);
1207 receivePeerSignal(sig->sender, sig->requestType, sig->params);
1216 void SignalProxy::disconnectDevice(QIODevice *dev, const QString &reason) {
1217 if(!reason.isEmpty())
1218 qWarning() << qPrintable(reason);
1219 QAbstractSocket *sock = qobject_cast<QAbstractSocket *>(dev);
1221 qWarning() << qPrintable(tr("Disconnecting")) << qPrintable(sock->peerAddress().toString());
1225 void SignalProxy::updateLag(IODevicePeer *peer, int lag) {
1227 if(proxyMode() == Client) {
1228 emit lagUpdated(lag);
1233 void SignalProxy::dumpProxyStats() {
1235 if(proxyMode() == Server)
1241 foreach(SignalRelay *relay, _relayHash.values())
1242 sigCount += relay->sigCount();
1245 foreach(ObjectId oid, _syncSlave.values())
1246 slaveCount += oid.count();
1249 qDebug() << " Proxy Mode:" << mode;
1250 qDebug() << "attached sending Objects:" << _relayHash.count();
1251 qDebug() << " number of Signals:" << sigCount;
1252 qDebug() << " attached Slots:" << _attachedSlots.count();
1253 qDebug() << " number of synced Slaves:" << slaveCount;
1254 qDebug() << "number of Classes cached:" << _classInfo.count();
1257 void SignalProxy::dumpSyncMap(SyncableObject *object) {
1258 const QMetaObject *meta = object->metaObject();
1259 qDebug() << "SignalProxy: SyncMap for Class" << meta->className();
1261 QHash<QByteArray, int> syncMap_ = syncMap(object);
1262 QHash<QByteArray, int>::const_iterator iter = syncMap_.constBegin();
1263 while(iter != syncMap_.constEnd()) {
1264 qDebug() << iter.key() << "-->" << iter.value() << meta->method(iter.value()).signature();
1267 // QHash<int, int> syncMap_ = syncMap(object);
1268 // QHash<int, int>::const_iterator iter = syncMap_.constBegin();
1269 // while(iter != syncMap_.constEnd()) {
1270 // qDebug() << iter.key() << meta->method(iter.key()).signature() << "-->" << iter.value() << meta->method(iter.value()).signature();