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 void SignalProxy::SignalProxyPeer::dispatchSignal(const RequestType &requestType, const QVariantList ¶ms) {
210 Qt::ConnectionType type = QThread::currentThread() == receiver->thread()
211 ? Qt::DirectConnection
212 : Qt::QueuedConnection;
214 if(type == Qt::DirectConnection) {
215 receiver->receivePeerSignal(sender, requestType, params);
217 QCoreApplication::postEvent(receiver, new PeerSignalEvent(sender, requestType, params));
221 // ==================================================
223 // ==================================================
224 SignalProxy::SignalProxy(QObject* parent)
227 setProxyMode(Client);
231 SignalProxy::SignalProxy(ProxyMode mode, QObject* parent)
238 SignalProxy::SignalProxy(ProxyMode mode, QIODevice* device, QObject* parent)
246 SignalProxy::~SignalProxy() {
247 QList<QObject*> senders = _relayHash.keys();
248 foreach(QObject* sender, senders)
249 detachObject(sender);
253 void SignalProxy::setProxyMode(ProxyMode mode) {
254 PeerHash::iterator peer = _peers.begin();
255 while(peer != _peers.end()) {
256 if((*peer)->type() != AbstractPeer::IODevicePeer) {
257 IODevicePeer *ioPeer = static_cast<IODevicePeer *>(*peer);
258 if(ioPeer->isOpen()) {
259 qWarning() << "SignalProxy: Cannot change proxy mode while connected";
263 if((*peer)->type() != AbstractPeer::SignalProxyPeer) {
264 qWarning() << "SignalProxy: Cannot change proxy mode while connected to another internal SignalProxy";
277 void SignalProxy::init() {
278 connect(&_heartBeatTimer, SIGNAL(timeout()), this, SLOT(sendHeartBeat()));
279 _heartBeatTimer.start(30 * 1000);
282 void SignalProxy::initServer() {
285 void SignalProxy::initClient() {
286 attachSlot("__objectRenamed__", this, SLOT(objectRenamed(QByteArray, QString, QString)));
289 bool SignalProxy::addPeer(QIODevice* iodev) {
293 if(_peers.contains(iodev))
296 if(proxyMode() == Client && !_peers.isEmpty()) {
297 qWarning("SignalProxy: only one peer allowed in client mode!");
302 qWarning("SignalProxy::the device you passed is not open!");
304 connect(iodev, SIGNAL(disconnected()), this, SLOT(removePeerBySender()));
305 connect(iodev, SIGNAL(readyRead()), this, SLOT(dataAvailable()));
307 QAbstractSocket* sock = qobject_cast<QAbstractSocket*>(iodev);
309 connect(sock, SIGNAL(disconnected()), this, SLOT(removePeerBySender()));
312 _peers[iodev] = new IODevicePeer(iodev, iodev->property("UseCompression").toBool());
314 if(_peers.count() == 1)
320 bool SignalProxy::addPeer(SignalProxy* proxy) {
324 if(proxyMode() == proxy->proxyMode()) {
325 qWarning() << "SignalProxy::addPeer(): adding a SignalProxy as peer requires one proxy to be server and one client!";
329 if(_peers.contains(proxy)) {
333 if(proxyMode() == Client && !_peers.isEmpty()) {
334 qWarning("SignalProxy: only one peer allowed in client mode!");
338 _peers[proxy] = new SignalProxyPeer(this, proxy);
340 proxy->addPeer(this);
342 if(_peers.count() == 1)
348 void SignalProxy::removeAllPeers() {
349 Q_ASSERT(proxyMode() == Server || _peers.count() <= 1);
350 // wee need to copy that list since we modify it in the loop
351 QList<QObject *> peers = _peers.keys();
352 foreach(QObject *peer, peers) {
357 void SignalProxy::removePeer(QObject* dev) {
358 if(_peers.isEmpty()) {
359 qWarning() << "SignalProxy::removePeer(): No peers in use!";
364 if(!_peers.contains(dev)) {
365 qWarning() << "SignalProxy: unknown Peer" << dev;
369 AbstractPeer *peer = _peers[dev];
372 disconnect(dev, 0, this, 0);
373 if(peer->type() == AbstractPeer::IODevicePeer)
374 emit peerRemoved(static_cast<QIODevice *>(dev));
382 void SignalProxy::removePeerBySender() {
383 removePeer(sender());
386 void SignalProxy::objectRenamed(const QString &newname, const QString &oldname) {
387 SyncableObject *syncObject = qobject_cast<SyncableObject *>(sender());
388 const QMetaObject *meta = syncObject->metaObject();
389 const QByteArray className(meta->className());
390 objectRenamed(className, newname, oldname);
392 if(proxyMode() == Client)
396 params << "__objectRenamed__" << className << newname << oldname;
397 dispatchSignal(RpcCall, params);
400 void SignalProxy::objectRenamed(const QByteArray &classname, const QString &newname, const QString &oldname) {
401 if(_syncSlave.contains(classname) && _syncSlave[classname].contains(oldname) && oldname != newname) {
402 SyncableObject *obj = _syncSlave[classname][newname] = _syncSlave[classname].take(oldname);
407 void SignalProxy::setArgTypes(QObject* obj, int methodId) {
408 const QMetaObject *meta = metaObject(obj);
409 QList<QByteArray> p = meta->method(methodId).parameterTypes();
412 for(int i=0; i<ct; i++)
413 argTypes.append(QMetaType::type(p.value(i)));
415 Q_ASSERT(!_classInfo[meta]->argTypes.contains(methodId));
416 _classInfo[meta]->argTypes[methodId] = argTypes;
419 const QList<int> &SignalProxy::argTypes(QObject *obj, int methodId) {
420 const QMetaObject *meta = metaObject(obj);
421 Q_ASSERT(_classInfo.contains(meta));
422 if(!_classInfo[meta]->argTypes.contains(methodId))
423 setArgTypes(obj, methodId);
424 return _classInfo[meta]->argTypes[methodId];
427 void SignalProxy::setReturnType(QObject *obj, int methodId) {
428 const QMetaObject *meta = metaObject(obj);
429 int returnType = QMetaType::type(meta->method(methodId).typeName());
431 Q_ASSERT(!_classInfo[meta]->returnType.contains(methodId));
432 _classInfo[meta]->returnType[methodId] = returnType;
435 const int &SignalProxy::returnType(QObject *obj, int methodId) {
436 const QMetaObject *meta = metaObject(obj);
437 Q_ASSERT(_classInfo.contains(meta));
438 if(!_classInfo[meta]->returnType.contains(methodId))
439 setReturnType(obj, methodId);
440 return _classInfo[meta]->returnType[methodId];
443 void SignalProxy::setMinArgCount(QObject *obj, int methodId) {
444 const QMetaObject *meta = metaObject(obj);
445 QString signature(meta->method(methodId).signature());
446 int minCount = meta->method(methodId).parameterTypes().count() - signature.count("=");
447 Q_ASSERT(!_classInfo[meta]->minArgCount.contains(methodId));
448 _classInfo[meta]->minArgCount[methodId] = minCount;
451 const int &SignalProxy::minArgCount(QObject *obj, int methodId) {
452 const QMetaObject *meta = metaObject(obj);
453 Q_ASSERT(_classInfo.contains(meta));
454 if(!_classInfo[meta]->minArgCount.contains(methodId))
455 setMinArgCount(obj, methodId);
456 return _classInfo[meta]->minArgCount[methodId];
459 void SignalProxy::setMethodName(QObject *obj, int methodId) {
460 const QMetaObject *meta = metaObject(obj);
461 QByteArray method(::methodName(meta->method(methodId)));
462 Q_ASSERT(!_classInfo[meta]->methodNames.contains(methodId));
463 _classInfo[meta]->methodNames[methodId] = method;
466 const QByteArray &SignalProxy::methodName(QObject *obj, int methodId) {
467 const QMetaObject *meta = metaObject(obj);
468 Q_ASSERT(_classInfo.contains(meta));
469 if(!_classInfo[meta]->methodNames.contains(methodId))
470 setMethodName(obj, methodId);
471 return _classInfo[meta]->methodNames[methodId];
475 void SignalProxy::setSyncMap(SyncableObject *obj) {
476 const QMetaObject *meta = obj->syncMetaObject();
477 QHash<QByteArray, int> syncMap;
479 QList<int> slotIndexes;
480 for(int i = 0; i < meta->methodCount(); i++) {
481 if(meta->method(i).methodType() == QMetaMethod::Slot)
485 // we're faking sync pairs for sync replies
486 QByteArray slotSignature;
487 foreach(int slotIdx, slotIndexes) {
488 slotSignature = QByteArray(meta->method(slotIdx).signature());
489 if(!slotSignature.startsWith("receive"))
491 syncMap[slotSignature] = slotIdx;
494 QMetaMethod signal, slot;
496 for(int signalIdx = 0; signalIdx < meta->methodCount(); signalIdx++) {
497 signal = meta->method(signalIdx);
498 if(signal.methodType() != QMetaMethod::Signal)
502 foreach(int slotIdx, slotIndexes) {
503 slot = meta->method(slotIdx);
504 if(methodsMatch(signal, slot)) {
510 slotIndexes.removeAt(slotIndexes.indexOf(matchIdx));
511 syncMap[QByteArray(signal.signature())] = matchIdx;
515 Q_ASSERT(_classInfo[meta]->syncMap.isEmpty());
516 _classInfo[meta]->syncMap = syncMap;
519 const QHash<QByteArray,int> &SignalProxy::syncMap(SyncableObject *obj) {
520 const QMetaObject *meta = obj->syncMetaObject();
521 Q_ASSERT(_classInfo.contains(meta));
522 if(_classInfo[meta]->syncMap.isEmpty())
524 return _classInfo[meta]->syncMap;
527 void SignalProxy::setReceiveMap(SyncableObject *obj) {
528 const QMetaObject *meta = obj->syncMetaObject();
529 Q_ASSERT(_classInfo.contains(meta));
531 QHash<int, int> receiveMap;
533 QMetaMethod requestSlot;
534 QByteArray returnTypeName;
535 QByteArray signature;
536 QByteArray methodName;
540 const int methodCount = meta->methodCount();
541 for(int i = 0; i < methodCount; i++) {
542 requestSlot = meta->method(i);
543 if(requestSlot.methodType() != QMetaMethod::Slot)
546 returnTypeName = requestSlot.typeName();
547 if(QMetaType::Void == (QMetaType::Type)returnType(obj, i))
550 signature = QByteArray(requestSlot.signature());
551 if(!signature.startsWith("request"))
554 paramsPos = signature.indexOf('(');
558 methodName = signature.left(paramsPos);
559 params = signature.mid(paramsPos);
561 methodName = methodName.replace("request", "receive");
562 params = params.left(params.count() - 1) + ", " + returnTypeName + ")";
564 signature = QMetaObject::normalizedSignature(methodName + params);
565 receiverId = meta->indexOfSlot(signature);
567 if(receiverId == -1) {
568 signature = QMetaObject::normalizedSignature(methodName + "(" + returnTypeName + ")");
569 receiverId = meta->indexOfSlot(signature);
573 receiveMap[i] = receiverId;
575 _classInfo[meta]->receiveMap = receiveMap;
578 const QHash<int, int> &SignalProxy::receiveMap(SyncableObject *obj) {
579 const QMetaObject *meta = obj->syncMetaObject();
580 Q_ASSERT(_classInfo.contains(meta));
581 if(_classInfo[meta]->receiveMap.isEmpty())
583 return _classInfo[meta]->receiveMap;
586 void SignalProxy::setUpdatedRemotelyId(SyncableObject *obj) {
587 const QMetaObject *meta = obj->syncMetaObject();
588 Q_ASSERT(_classInfo.contains(meta));
589 _classInfo[meta]->updatedRemotelyId = meta->indexOfSignal("updatedRemotely()");
592 int SignalProxy::updatedRemotelyId(SyncableObject *obj) {
593 Q_ASSERT(_classInfo.contains(obj->syncMetaObject()));
594 return _classInfo[obj->syncMetaObject()]->updatedRemotelyId;
597 const QMetaObject *SignalProxy::metaObject(QObject *obj) {
598 if(SyncableObject *syncObject = qobject_cast<SyncableObject *>(obj))
599 return syncObject->syncMetaObject();
601 return obj->metaObject();
604 void SignalProxy::createClassInfo(QObject *obj) {
605 const QMetaObject *meta = metaObject(obj);
606 if(_classInfo.contains(meta))
609 ClassInfo *classInfo = new ClassInfo();
610 _classInfo[meta] = classInfo;
613 bool SignalProxy::attachSignal(QObject* sender, const char* signal, const QByteArray& sigName) {
614 const QMetaObject* meta = metaObject(sender);
615 QByteArray sig(meta->normalizedSignature(signal).mid(1));
616 int methodId = meta->indexOfMethod(sig.constData());
617 if(methodId == -1 || meta->method(methodId).methodType() != QMetaMethod::Signal) {
618 qWarning() << "SignalProxy::attachSignal(): No such signal" << signal;
622 createClassInfo(sender);
625 if(_relayHash.contains(sender))
626 relay = _relayHash[sender];
628 relay = _relayHash[sender] = new SignalRelay(this, sender);
630 relay->attachSignal(methodId, sigName);
636 bool SignalProxy::attachSlot(const QByteArray& sigName, QObject* recv, const char* slot) {
637 const QMetaObject* meta = recv->metaObject();
638 int methodId = meta->indexOfMethod(meta->normalizedSignature(slot).mid(1));
639 if(methodId == -1 || meta->method(methodId).methodType() == QMetaMethod::Method) {
640 qWarning() << "SignalProxy::attachSlot(): No such slot" << slot;
644 createClassInfo(recv);
646 QByteArray funcName = QMetaObject::normalizedSignature(sigName.constData());
647 _attachedSlots.insert(funcName, qMakePair(recv, methodId));
649 QObject::disconnect(recv, SIGNAL(destroyed()), this, SLOT(detachSender()));
650 QObject::connect(recv, SIGNAL(destroyed()), this, SLOT(detachSender()));
654 void SignalProxy::synchronize(SyncableObject *obj) {
655 createClassInfo(obj);
656 setUpdatedRemotelyId(obj);
658 // attaching all the Signals
660 if(_relayHash.contains(obj))
661 relay = _relayHash[obj];
663 relay = _relayHash[obj] = new SignalRelay(this, obj);
665 relay->setSynchronize(true);
667 // attaching as slave to receive sync Calls
668 QByteArray className(obj->syncMetaObject()->className());
669 _syncSlave[className][obj->objectName()] = obj;
671 if(proxyMode() == Server) {
672 connect(obj, SIGNAL(objectRenamed(QString, QString)), this, SLOT(objectRenamed(QString, QString)));
673 obj->setInitialized();
674 emit objectInitialized(obj);
676 if(obj->isInitialized())
677 emit objectInitialized(obj);
683 void SignalProxy::requestInit(SyncableObject *obj) {
684 if(proxyMode() == Server || obj->isInitialized())
688 params << obj->syncMetaObject()->className()
689 << obj->objectName();
690 dispatchSignal(InitRequest, params);
693 void SignalProxy::detachSender() {
694 detachObject(sender());
697 void SignalProxy::detachObject(QObject* obj) {
700 stopSync(static_cast<SyncableObject *>(obj));
703 void SignalProxy::detachSignals(QObject* sender) {
704 if(!_relayHash.contains(sender))
706 _relayHash.take(sender)->deleteLater();
709 void SignalProxy::detachSlots(QObject* receiver) {
710 SlotHash::iterator slotIter = _attachedSlots.begin();
711 while(slotIter != _attachedSlots.end()) {
712 if(slotIter.value().first == receiver) {
713 slotIter = _attachedSlots.erase(slotIter);
719 void SignalProxy::stopSync(SyncableObject* obj) {
720 if(_relayHash.contains(obj))
721 _relayHash[obj]->setSynchronize(false);
723 // we can't use a className here, since it might be effed up, if we receive the call as a result of a decon
724 // gladly the objectName() is still valid. So we have only to iterate over the classes not each instance! *sigh*
725 QHash<QByteArray, ObjectId>::iterator classIter = _syncSlave.begin();
726 while(classIter != _syncSlave.end()) {
727 if(classIter->contains(obj->objectName()) && classIter.value()[obj->objectName()] == obj) {
728 classIter->remove(obj->objectName());
735 void SignalProxy::dispatchSignal(const RequestType &requestType, const QVariantList ¶ms) {
736 QVariant packedFunc(QVariantList() << (qint16)requestType << params);
737 PeerHash::iterator peer = _peers.begin();
738 while(peer != _peers.end()) {
739 switch((*peer)->type()) {
740 case AbstractPeer::IODevicePeer:
742 IODevicePeer *ioPeer = static_cast<IODevicePeer *>(*peer);
743 ioPeer->dispatchPackedFunc(packedFunc);
746 case AbstractPeer::SignalProxyPeer:
747 (*peer)->dispatchSignal(requestType, params);
750 Q_ASSERT(false); // there shouldn't be any peers with wrong / unknown type
756 void SignalProxy::receivePackedFunc(AbstractPeer *sender, const QVariant &packedFunc) {
757 QVariantList params(packedFunc.toList());
759 if(params.isEmpty()) {
760 qWarning() << "SignalProxy::receivePeerSignal(): received incompatible Data:" << packedFunc;
764 RequestType requestType = (RequestType)params.takeFirst().value<int>();
765 receivePeerSignal(sender, requestType, params);
768 void SignalProxy::receivePeerSignal(AbstractPeer *sender, const RequestType &requestType, const QVariantList ¶ms) {
769 switch(requestType) {
772 qWarning() << "SignalProxy::receivePeerSignal(): received empty RPC-Call";
774 handleSignal(params);
775 //handleSignal(params.takeFirst().toByteArray(), params);
779 handleSync(sender, params);
783 handleInitRequest(sender, params);
787 handleInitData(sender, params);
791 receiveHeartBeat(sender, params);
795 receiveHeartBeatReply(sender, params);
799 qWarning() << "SignalProxy::receivePeerSignal(): received undefined CallType" << requestType << params;
803 void SignalProxy::receivePeerSignal(SignalProxy *sender, const RequestType &requestType, const QVariantList ¶ms) {
804 if(!_peers.contains(sender)) {
805 // 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.
806 qWarning() << "SignalProxy::receivePeerSignal(): received Signal from unknown Proxy" << reinterpret_cast<void *>(sender);
809 receivePeerSignal(_peers[sender], requestType, params);
812 void SignalProxy::handleSync(AbstractPeer *sender, QVariantList params) {
813 if(params.count() < 3) {
814 qWarning() << "received invalid Sync call" << params;
818 QByteArray className = params.takeFirst().toByteArray();
819 QString objectName = params.takeFirst().toString();
820 QByteArray signal = params.takeFirst().toByteArray();
822 if(!_syncSlave.contains(className) || !_syncSlave[className].contains(objectName)) {
823 qWarning() << QString("no registered receiver for sync call: %1::%2 (objectName=\"%3\"). Params are:").arg(QString(className)).arg(QString(signal)).arg(objectName)
828 SyncableObject *receiver = _syncSlave[className][objectName];
829 if(!syncMap(receiver).contains(signal)) {
830 qWarning() << QString("no matching slot for sync call: %1::%2 (objectName=\"%3\"). Params are:").arg(QString(className)).arg(QString(signal)).arg(objectName)
835 int slotId = syncMap(receiver)[signal];
837 QVariant returnValue((QVariant::Type)returnType(receiver, slotId));
838 if(!invokeSlot(receiver, slotId, params, returnValue)) {
839 qWarning("SignalProxy::handleSync(): invokeMethod for \"%s\" failed ", methodName(receiver, slotId).constData());
843 if(returnValue.type() != QVariant::Invalid && receiveMap(receiver).contains(slotId)) {
844 int receiverId = receiveMap(receiver)[slotId];
845 QVariantList returnParams;
846 returnParams << className
848 << QByteArray(receiver->metaObject()->method(receiverId).signature());
849 if(argTypes(receiver, receiverId).count() > 1)
850 returnParams << params;
851 returnParams << returnValue;
852 sender->dispatchSignal(Sync, returnParams);
855 // send emit update signal
856 invokeSlot(receiver, updatedRemotelyId(receiver));
859 void SignalProxy::handleInitRequest(AbstractPeer *sender, const QVariantList ¶ms) {
860 if(params.count() != 2) {
861 qWarning() << "SignalProxy::handleInitRequest() received initRequest with invalid param Count:"
866 QByteArray className(params[0].toByteArray());
867 QString objectName(params[1].toString());
869 if(!_syncSlave.contains(className)) {
870 qWarning() << "SignalProxy::handleInitRequest() received initRequest for unregistered Class:"
875 if(!_syncSlave[className].contains(objectName)) {
876 qWarning() << "SignalProxy::handleInitRequest() received initRequest for unregistered Object:"
877 << className << objectName;
881 SyncableObject *obj = _syncSlave[className][objectName];
883 QVariantList params_;
888 sender->dispatchSignal(InitData, params_);
891 void SignalProxy::handleInitData(AbstractPeer *sender, const QVariantList ¶ms) {
893 if(params.count() != 3) {
894 qWarning() << "SignalProxy::handleInitData() received initData with invalid param Count:"
899 QByteArray className(params[0].toByteArray());
900 QString objectName(params[1].toString());
901 QVariantMap propertyMap(params[2].toMap());
903 if(!_syncSlave.contains(className)) {
904 qWarning() << "SignalProxy::handleInitData() received initData for unregistered Class:"
909 if(!_syncSlave[className].contains(objectName)) {
910 qWarning() << "SignalProxy::handleInitData() received initData for unregistered Object:"
911 << className << objectName;
915 SyncableObject *obj = _syncSlave[className][objectName];
916 setInitData(obj, propertyMap);
919 //void SignalProxy::handleSignal(const QByteArray &funcName, const QVariantList ¶ms) {
920 void SignalProxy::handleSignal(const QVariantList &data) {
921 QVariantList params = data;
922 QByteArray funcName = params.takeFirst().toByteArray();
926 SlotHash::const_iterator slot = _attachedSlots.constFind(funcName);
927 while(slot != _attachedSlots.constEnd() && slot.key() == funcName) {
928 receiver = (*slot).first;
929 methodId = (*slot).second;
930 if(!invokeSlot(receiver, methodId, params))
931 qWarning("SignalProxy::handleSignal(): invokeMethod for \"%s\" failed ", methodName(receiver, methodId).constData());
936 bool SignalProxy::invokeSlot(QObject *receiver, int methodId, const QVariantList ¶ms, QVariant &returnValue) {
937 const QList<int> args = argTypes(receiver, methodId);
938 const int numArgs = params.count() < args.count()
942 if(minArgCount(receiver, methodId) > params.count()) {
943 qWarning() << "SignalProxy::invokeSlot(): not enough params to invoke" << methodName(receiver, methodId);
947 void *_a[] = {0, // return type...
948 0, 0, 0, 0 , 0, // and 10 args - that's the max size qt can handle with signals and slots
951 // check for argument compatibility and build params array
952 for(int i = 0; i < numArgs; i++) {
953 if(!params[i].isValid()) {
954 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());
955 qWarning() << " - make sure all your data types are known by the Qt MetaSystem";
958 if(args[i] != QMetaType::type(params[i].typeName())) {
959 qWarning() << "SignalProxy::invokeSlot(): incompatible param types to invoke" << methodName(receiver, methodId);
962 _a[i+1] = const_cast<void *>(params[i].constData());
965 if(returnValue.type() != QVariant::Invalid)
966 _a[0] = const_cast<void *>(returnValue.constData());
968 Qt::ConnectionType type = QThread::currentThread() == receiver->thread()
969 ? Qt::DirectConnection
970 : Qt::QueuedConnection;
972 if (type == Qt::DirectConnection) {
973 return receiver->qt_metacall(QMetaObject::InvokeMetaMethod, methodId, _a) < 0;
975 qWarning() << "Queued Connections are not implemented yet";
976 // note to self: qmetaobject.cpp:990 ff
982 bool SignalProxy::invokeSlot(QObject *receiver, int methodId, const QVariantList ¶ms) {
984 return invokeSlot(receiver, methodId, params, ret);
987 void SignalProxy::dataAvailable() {
988 // yet again. it's a private slot. no need for checks.
989 QIODevice* ioDev = qobject_cast<QIODevice* >(sender());
990 Q_ASSERT(_peers.contains(ioDev) && _peers[ioDev]->type() == AbstractPeer::IODevicePeer);
991 IODevicePeer *peer = static_cast<IODevicePeer *>(_peers[ioDev]);
993 while(peer->readData(var))
994 receivePackedFunc(peer, var);
997 void SignalProxy::writeDataToDevice(QIODevice *dev, const QVariant &item, bool compressed) {
998 QAbstractSocket* sock = qobject_cast<QAbstractSocket*>(dev);
999 if(!dev->isOpen() || (sock && sock->state()!=QAbstractSocket::ConnectedState)) {
1000 qWarning("SignalProxy: Can't call write on a closed device");
1005 QDataStream out(&block, QIODevice::WriteOnly);
1006 out.setVersion(QDataStream::Qt_4_2);
1011 QDataStream itemStream(&rawItem, QIODevice::WriteOnly);
1013 itemStream.setVersion(QDataStream::Qt_4_2);
1016 rawItem = qCompress(rawItem);
1023 out.device()->seek(0);
1024 out << (quint32)(block.size() - sizeof(quint32));
1029 bool SignalProxy::readDataFromDevice(QIODevice *dev, quint32 &blockSize, QVariant &item, bool compressed) {
1030 QDataStream in(dev);
1031 in.setVersion(QDataStream::Qt_4_2);
1033 if(blockSize == 0) {
1034 if(dev->bytesAvailable() < (int)sizeof(quint32)) return false;
1038 if(blockSize > 1 << 22) {
1039 qWarning() << qPrintable(tr("Client tried to send package larger than max package size!"));
1040 QAbstractSocket *sock = qobject_cast<QAbstractSocket *>(dev);
1041 qWarning() << qPrintable(tr("Disconnecting")) << (sock ? qPrintable(sock->peerAddress().toString()) : qPrintable(tr("local client")));
1046 if(dev->bytesAvailable() < blockSize)
1053 int nbytes = rawItem.size();
1055 const char *data = rawItem.constData();
1056 if (nbytes < 4 || (data[0]!=0 || data[1]!=0 || data[2]!=0 || data[3]!=0))
1057 qWarning() << "receieved corrupted compressed data:"
1058 << blockSize << rawItem << rawItem.size() << dev;
1061 rawItem = qUncompress(rawItem);
1063 QDataStream itemStream(&rawItem, QIODevice::ReadOnly);
1064 itemStream.setVersion(QDataStream::Qt_4_2);
1075 bool SignalProxy::methodsMatch(const QMetaMethod &signal, const QMetaMethod &slot) const {
1076 // if we don't even have the same basename it's a sure NO
1077 if(methodBaseName(signal) != methodBaseName(slot))
1080 // are the signatures compatible?
1081 if(!QObject::staticMetaObject.checkConnectArgs(signal.signature(), slot.signature()))
1084 // we take an educated guess if the signals and slots match
1085 QString signalsuffix = ::methodName(signal).mid(QString(::methodName(signal)).lastIndexOf(QRegExp("[A-Z]"))).toLower();
1086 QString slotprefix = ::methodName(slot).left(QString(::methodName(slot)).indexOf(QRegExp("[A-Z]"))).toLower();
1088 uint sizediff = qAbs(slotprefix.size() - signalsuffix.size());
1089 int ratio = editingDistance(slotprefix, signalsuffix) - sizediff;
1093 QString SignalProxy::methodBaseName(const QMetaMethod &method) {
1094 QString methodname = QString(method.signature()).section("(", 0, 0);
1096 // determine where we have to chop:
1098 if(method.methodType() == QMetaMethod::Slot) {
1099 // we take evertyhing from the first uppercase char if it's slot
1100 upperCharPos = methodname.indexOf(QRegExp("[A-Z]"));
1101 if(upperCharPos == -1)
1103 methodname = methodname.mid(upperCharPos);
1105 // and if it's a signal we discard everything from the last uppercase char
1106 upperCharPos = methodname.lastIndexOf(QRegExp("[A-Z]"));
1107 if(upperCharPos == -1)
1109 methodname = methodname.left(upperCharPos);
1112 methodname[0] = methodname[0].toUpper();
1117 QVariantMap SignalProxy::initData(SyncableObject *obj) const {
1118 return obj->toVariantMap();
1121 void SignalProxy::setInitData(SyncableObject *obj, const QVariantMap &properties) {
1122 if(obj->isInitialized())
1124 obj->fromVariantMap(properties);
1125 obj->setInitialized();
1126 emit objectInitialized(obj);
1127 invokeSlot(obj, updatedRemotelyId(obj));
1130 void SignalProxy::sendHeartBeat() {
1131 QVariantList heartBeatParams;
1132 heartBeatParams << QTime::currentTime();
1133 PeerHash::iterator peer = _peers.begin();
1134 while(peer != _peers.end()) {
1135 if((*peer)->type() == AbstractPeer::IODevicePeer) {
1136 IODevicePeer *ioPeer = static_cast<IODevicePeer *>(*peer);
1137 ioPeer->dispatchSignal(SignalProxy::HeartBeat, heartBeatParams);
1138 if(ioPeer->sentHeartBeats > 0) {
1139 updateLag(ioPeer, ioPeer->sentHeartBeats * _heartBeatTimer.interval());
1141 if(ioPeer->sentHeartBeats > 1) {
1142 //FIXME: proper disconnect.
1143 // QAbstractSocket *socket = qobject_cast<QAbstractSocket *>(peerIter.key());
1144 // qWarning() << "SignalProxy: Disconnecting peer:"
1145 // << (socket ? qPrintable(socket->peerAddress().toString()) : "local client")
1146 // << "(didn't receive a heartbeat for over" << peerIter->sentHeartBeats * _heartBeatTimer.interval() / 1000 << "seconds)";
1147 // peerIter.key()->close();
1149 ioPeer->sentHeartBeats++;
1156 void SignalProxy::receiveHeartBeat(AbstractPeer *peer, const QVariantList ¶ms) {
1157 peer->dispatchSignal(SignalProxy::HeartBeatReply, params);
1160 void SignalProxy::receiveHeartBeatReply(AbstractPeer *peer, const QVariantList ¶ms) {
1161 if(peer->type() != AbstractPeer::IODevicePeer) {
1162 qWarning() << "SignalProxy::receiveHeartBeatReply: received heart beat from a non IODevicePeer!";
1166 IODevicePeer *ioPeer = static_cast<IODevicePeer *>(peer);
1167 ioPeer->sentHeartBeats = 0;
1169 if(params.isEmpty()) {
1170 qWarning() << "SignalProxy: received heart beat reply with less params then sent from:" << ioPeer->device();
1174 QTime sendTime = params[0].value<QTime>();
1175 updateLag(ioPeer, sendTime.msecsTo(QTime::currentTime()) / 2);
1178 void SignalProxy::customEvent(QEvent *event) {
1179 switch(event->type()) {
1182 PeerSignalEvent *sig = static_cast<PeerSignalEvent *>(event);
1183 receivePeerSignal(sig->sender, sig->requestType, sig->params);
1192 void SignalProxy::updateLag(IODevicePeer *peer, int lag) {
1194 if(proxyMode() == Client) {
1195 emit lagUpdated(lag);
1200 void SignalProxy::dumpProxyStats() {
1202 if(proxyMode() == Server)
1208 foreach(SignalRelay *relay, _relayHash.values())
1209 sigCount += relay->sigCount();
1212 foreach(ObjectId oid, _syncSlave.values())
1213 slaveCount += oid.count();
1216 qDebug() << " Proxy Mode:" << mode;
1217 qDebug() << "attached sending Objects:" << _relayHash.count();
1218 qDebug() << " number of Signals:" << sigCount;
1219 qDebug() << " attached Slots:" << _attachedSlots.count();
1220 qDebug() << " number of synced Slaves:" << slaveCount;
1221 qDebug() << "number of Classes cached:" << _classInfo.count();
1224 void SignalProxy::dumpSyncMap(SyncableObject *object) {
1225 const QMetaObject *meta = object->metaObject();
1226 qDebug() << "SignalProxy: SyncMap for Class" << meta->className();
1228 QHash<QByteArray, int> syncMap_ = syncMap(object);
1229 QHash<QByteArray, int>::const_iterator iter = syncMap_.constBegin();
1230 while(iter != syncMap_.constEnd()) {
1231 qDebug() << iter.key() << "-->" << iter.value() << meta->method(iter.value()).signature();
1234 // QHash<int, int> syncMap_ = syncMap(object);
1235 // QHash<int, int>::const_iterator iter = syncMap_.constBegin();
1236 // while(iter != syncMap_.constEnd()) {
1237 // qDebug() << iter.key() << meta->method(iter.key()).signature() << "-->" << iter.value() << meta->method(iter.value()).signature();