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>
37 #include "syncableobject.h"
40 class SignalRelay: public QObject {
42 /* Q_OBJECT is not necessary or even allowed, because we implement
43 qt_metacall ourselves (and don't use any other features of the meta
47 SignalRelay(SignalProxy* parent, QObject* source);
48 int qt_metacall(QMetaObject::Call _c, int _id, void **_a);
50 void attachSignal(int methodId, const QByteArray &func);
52 void setSynchronize(bool);
53 bool synchronize() const;
58 bool isSyncMethod(int i);
62 QMultiHash<int, QByteArray> sigNames;
66 SignalRelay::SignalRelay(SignalProxy* parent, QObject* source)
72 QObject::connect(source, SIGNAL(destroyed()), parent, SLOT(detachSender()));
75 int SignalRelay::qt_metacall(QMetaObject::Call _c, int _id, void **_a) {
76 _id = QObject::qt_metacall(_c, _id, _a);
79 if(_c == QMetaObject::InvokeMetaMethod) {
80 if(sigNames.contains(_id) || synchronize()) {
81 const QList<int> &argTypes = proxy->argTypes(caller, _id);
83 int n = argTypes.size();
84 for(int i=0; i<n; i++) {
85 if(argTypes[i] == 0) {
86 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());
87 qWarning() << " - make sure all your data types are known by the Qt MetaSystem";
90 params.append(QVariant(argTypes[i], _a[i+1]));
92 QMultiHash<int, QByteArray>::const_iterator funcIter = sigNames.constFind(_id);
93 while(funcIter != sigNames.constEnd() && funcIter.key() == _id) {
94 proxy->dispatchSignal(SignalProxy::RpcCall, QVariantList() << funcIter.value() << params);
98 // dispatch Sync Signal if necessary
99 QByteArray signature(caller->metaObject()->method(_id).signature());
100 SyncableObject *syncObject = qobject_cast<SyncableObject *>(caller);
101 if(synchronize() && proxy->syncMap(syncObject).contains(signature)) {
102 //qDebug() << "__SYNC__ >>>"
103 // << caller->metaObject()->className()
104 // << caller->objectName()
107 // params.prepend(QVariant(_id));
108 params.prepend(signature);
109 params.prepend(syncObject->objectName());
110 params.prepend(syncObject->syncMetaObject()->className());
111 proxy->dispatchSignal(SignalProxy::Sync, params);
114 _id -= QObject::staticMetaObject.methodCount();
119 void SignalRelay::setSynchronize(bool sync) {
120 SyncableObject *syncObject = qobject_cast<SyncableObject *>(caller);
124 const QMetaObject *meta = syncObject->syncMetaObject();
127 for(int i = 0; i < meta->methodCount(); i++ ) {
129 QMetaObject::connect(caller, i, this, QObject::staticMetaObject.methodCount() + i);
131 } else if (_sync && !sync) {
133 for(int i = 0; i < meta->methodCount(); i++ ) {
135 QMetaObject::disconnect(caller, i, this, QObject::staticMetaObject.methodCount() + i);
141 bool SignalRelay::isSyncMethod(int i) {
142 SyncableObject *syncObject = qobject_cast<SyncableObject *>(caller);
146 QByteArray signature = syncObject->syncMetaObject()->method(i).signature();
147 if(!proxy->syncMap(syncObject).contains(signature))
150 if(proxy->proxyMode() == SignalProxy::Server && !signature.contains("Requested"))
153 if(proxy->proxyMode() == SignalProxy::Client && signature.contains("Requested"))
159 bool SignalRelay::synchronize() const {
163 int SignalRelay::sigCount() const {
164 // only for debuging purpose
165 return sigNames.count();
168 void SignalRelay::attachSignal(int methodId, const QByteArray &func) {
169 // we ride without safetybelts here... all checking for valid method etc pp has to be done by the caller
170 // all connected methodIds are offset by the standard methodCount of QObject
171 if(!sigNames.contains(methodId))
172 QMetaObject::connect(caller, methodId, this, QObject::staticMetaObject.methodCount() + methodId);
175 if(!func.isEmpty()) {
176 fn = QMetaObject::normalizedSignature(func);
178 fn = QByteArray("2") + caller->metaObject()->method(methodId).signature();
180 sigNames.insert(methodId, fn);
182 // ====================
184 // ====================
187 // ====================
189 // ====================
190 SignalProxy::SignalProxy(QObject* parent)
193 setProxyMode(Client);
197 SignalProxy::SignalProxy(ProxyMode mode, QObject* parent)
204 SignalProxy::SignalProxy(ProxyMode mode, QIODevice* device, QObject* parent)
212 SignalProxy::~SignalProxy() {
213 QList<QObject*> senders = _relayHash.keys();
214 foreach(QObject* sender, senders)
215 detachObject(sender);
217 // close peer connections
218 foreach(QIODevice *device, _peers.keys()) {
224 void SignalProxy::setProxyMode(ProxyMode mode) {
225 foreach(QIODevice* peer, _peers.keys()) {
227 qWarning() << "SignalProxy: Cannot change proxy mode while connected";
238 SignalProxy::ProxyMode SignalProxy::proxyMode() const {
242 void SignalProxy::init() {
243 connect(&_heartBeatTimer, SIGNAL(timeout()), this, SLOT(sendHeartBeat()));
244 _heartBeatTimer.start(30 * 1000);
247 void SignalProxy::initServer() {
250 void SignalProxy::initClient() {
251 attachSlot("__objectRenamed__", this, SLOT(objectRenamed(QByteArray, QString, QString)));
254 bool SignalProxy::addPeer(QIODevice* iodev) {
258 if(_peers.contains(iodev))
261 if(proxyMode() == Client && !_peers.isEmpty()) {
262 qWarning("SignalProxy: only one peer allowed in client mode!");
267 qWarning("SignalProxy::the device you passed is not open!");
269 connect(iodev, SIGNAL(disconnected()), this, SLOT(removePeerBySender()));
270 connect(iodev, SIGNAL(readyRead()), this, SLOT(dataAvailable()));
272 QAbstractSocket* sock = qobject_cast<QAbstractSocket*>(iodev);
274 connect(sock, SIGNAL(disconnected()), this, SLOT(removePeerBySender()));
277 _peers[iodev] = peerInfo();
278 if(iodev->property("UseCompression").toBool())
279 _peers[iodev].usesCompression = true;
281 if(_peers.count() == 1)
287 void SignalProxy::removePeer(QIODevice* iodev) {
288 if(_peers.isEmpty()) {
289 qWarning() << "SignalProxy::removePeer(): No peers in use!";
293 if(proxyMode() == Server && !iodev) {
295 QList<QIODevice *> peers = _peers.keys();
296 foreach(QIODevice *peer, peers)
300 if(proxyMode() != Server && !iodev)
301 iodev = _peers.keys().first();
305 if(!_peers.contains(iodev)) {
306 qWarning() << "SignalProxy: unknown QIODevice" << iodev;
310 _peers.remove(iodev);
312 disconnect(iodev, 0, this, 0);
313 emit peerRemoved(iodev);
319 void SignalProxy::removePeerBySender() {
320 // OK we're brutal here... but since it's a private slot we know what we've got connected to it...
321 // this Slot is not triggered by destroyed, so the object is still alive and can be used!
322 QIODevice *ioDev = (QIODevice *)(sender());
326 void SignalProxy::objectRenamed(const QString &newname, const QString &oldname) {
327 SyncableObject *syncObject = qobject_cast<SyncableObject *>(sender());
328 const QMetaObject *meta = syncObject->metaObject();
329 const QByteArray className(meta->className());
330 objectRenamed(className, newname, oldname);
332 if(proxyMode() == Client)
336 params << "__objectRenamed__" << className << newname << oldname;
337 dispatchSignal(RpcCall, params);
340 void SignalProxy::objectRenamed(const QByteArray &classname, const QString &newname, const QString &oldname) {
341 if(_syncSlave.contains(classname) && _syncSlave[classname].contains(oldname) && oldname != newname) {
342 SyncableObject *obj = _syncSlave[classname][newname] = _syncSlave[classname].take(oldname);
347 void SignalProxy::setArgTypes(QObject* obj, int methodId) {
348 const QMetaObject *meta = metaObject(obj);
349 QList<QByteArray> p = meta->method(methodId).parameterTypes();
352 for(int i=0; i<ct; i++)
353 argTypes.append(QMetaType::type(p.value(i)));
355 Q_ASSERT(!_classInfo[meta]->argTypes.contains(methodId));
356 _classInfo[meta]->argTypes[methodId] = argTypes;
359 const QList<int> &SignalProxy::argTypes(QObject *obj, int methodId) {
360 const QMetaObject *meta = metaObject(obj);
361 Q_ASSERT(_classInfo.contains(meta));
362 if(!_classInfo[meta]->argTypes.contains(methodId))
363 setArgTypes(obj, methodId);
364 return _classInfo[meta]->argTypes[methodId];
367 void SignalProxy::setReturnType(QObject *obj, int methodId) {
368 const QMetaObject *meta = metaObject(obj);
369 int returnType = QMetaType::type(meta->method(methodId).typeName());
371 Q_ASSERT(!_classInfo[meta]->returnType.contains(methodId));
372 _classInfo[meta]->returnType[methodId] = returnType;
375 const int &SignalProxy::returnType(QObject *obj, int methodId) {
376 const QMetaObject *meta = metaObject(obj);
377 Q_ASSERT(_classInfo.contains(meta));
378 if(!_classInfo[meta]->returnType.contains(methodId))
379 setReturnType(obj, methodId);
380 return _classInfo[meta]->returnType[methodId];
383 void SignalProxy::setMinArgCount(QObject *obj, int methodId) {
384 const QMetaObject *meta = metaObject(obj);
385 QString signature(meta->method(methodId).signature());
386 int minCount = meta->method(methodId).parameterTypes().count() - signature.count("=");
387 Q_ASSERT(!_classInfo[meta]->minArgCount.contains(methodId));
388 _classInfo[meta]->minArgCount[methodId] = minCount;
391 const int &SignalProxy::minArgCount(QObject *obj, int methodId) {
392 const QMetaObject *meta = metaObject(obj);
393 Q_ASSERT(_classInfo.contains(meta));
394 if(!_classInfo[meta]->minArgCount.contains(methodId))
395 setMinArgCount(obj, methodId);
396 return _classInfo[meta]->minArgCount[methodId];
399 void SignalProxy::setMethodName(QObject *obj, int methodId) {
400 const QMetaObject *meta = metaObject(obj);
401 QByteArray method(::methodName(meta->method(methodId)));
402 Q_ASSERT(!_classInfo[meta]->methodNames.contains(methodId));
403 _classInfo[meta]->methodNames[methodId] = method;
406 const QByteArray &SignalProxy::methodName(QObject *obj, int methodId) {
407 const QMetaObject *meta = metaObject(obj);
408 Q_ASSERT(_classInfo.contains(meta));
409 if(!_classInfo[meta]->methodNames.contains(methodId))
410 setMethodName(obj, methodId);
411 return _classInfo[meta]->methodNames[methodId];
415 void SignalProxy::setSyncMap(SyncableObject *obj) {
416 const QMetaObject *meta = obj->syncMetaObject();
417 QHash<QByteArray, int> syncMap;
419 QList<int> slotIndexes;
420 for(int i = 0; i < meta->methodCount(); i++) {
421 if(meta->method(i).methodType() == QMetaMethod::Slot)
425 // we're faking sync pairs for sync replies
426 QByteArray slotSignature;
427 foreach(int slotIdx, slotIndexes) {
428 slotSignature = QByteArray(meta->method(slotIdx).signature());
429 if(!slotSignature.startsWith("receive"))
431 syncMap[slotSignature] = slotIdx;
434 QMetaMethod signal, slot;
436 for(int signalIdx = 0; signalIdx < meta->methodCount(); signalIdx++) {
437 signal = meta->method(signalIdx);
438 if(signal.methodType() != QMetaMethod::Signal)
442 foreach(int slotIdx, slotIndexes) {
443 slot = meta->method(slotIdx);
444 if(methodsMatch(signal, slot)) {
450 slotIndexes.removeAt(slotIndexes.indexOf(matchIdx));
451 syncMap[QByteArray(signal.signature())] = matchIdx;
455 Q_ASSERT(_classInfo[meta]->syncMap.isEmpty());
456 _classInfo[meta]->syncMap = syncMap;
459 const QHash<QByteArray,int> &SignalProxy::syncMap(SyncableObject *obj) {
460 const QMetaObject *meta = obj->syncMetaObject();
461 Q_ASSERT(_classInfo.contains(meta));
462 if(_classInfo[meta]->syncMap.isEmpty())
464 return _classInfo[meta]->syncMap;
467 void SignalProxy::setReceiveMap(SyncableObject *obj) {
468 const QMetaObject *meta = obj->syncMetaObject();
469 Q_ASSERT(_classInfo.contains(meta));
471 QHash<int, int> receiveMap;
473 QMetaMethod requestSlot;
474 QByteArray returnTypeName;
475 QByteArray signature;
476 QByteArray methodName;
480 const int methodCount = meta->methodCount();
481 for(int i = 0; i < methodCount; i++) {
482 requestSlot = meta->method(i);
483 if(requestSlot.methodType() != QMetaMethod::Slot)
486 returnTypeName = requestSlot.typeName();
487 if(QMetaType::Void == (QMetaType::Type)returnType(obj, i))
490 signature = QByteArray(requestSlot.signature());
491 if(!signature.startsWith("request"))
494 paramsPos = signature.indexOf('(');
498 methodName = signature.left(paramsPos);
499 params = signature.mid(paramsPos);
501 methodName = methodName.replace("request", "receive");
502 params = params.left(params.count() - 1) + ", " + returnTypeName + ")";
504 signature = QMetaObject::normalizedSignature(methodName + params);
505 receiverId = meta->indexOfSlot(signature);
507 if(receiverId == -1) {
508 signature = QMetaObject::normalizedSignature(methodName + "(" + returnTypeName + ")");
509 receiverId = meta->indexOfSlot(signature);
513 receiveMap[i] = receiverId;
515 _classInfo[meta]->receiveMap = receiveMap;
518 const QHash<int, int> &SignalProxy::receiveMap(SyncableObject *obj) {
519 const QMetaObject *meta = obj->syncMetaObject();
520 Q_ASSERT(_classInfo.contains(meta));
521 if(_classInfo[meta]->receiveMap.isEmpty())
523 return _classInfo[meta]->receiveMap;
526 void SignalProxy::setUpdatedRemotelyId(SyncableObject *obj) {
527 const QMetaObject *meta = obj->syncMetaObject();
528 Q_ASSERT(_classInfo.contains(meta));
529 _classInfo[meta]->updatedRemotelyId = meta->indexOfSignal("updatedRemotely()");
532 int SignalProxy::updatedRemotelyId(SyncableObject *obj) {
533 Q_ASSERT(_classInfo.contains(obj->syncMetaObject()));
534 return _classInfo[obj->syncMetaObject()]->updatedRemotelyId;
537 const QMetaObject *SignalProxy::metaObject(QObject *obj) {
538 if(SyncableObject *syncObject = qobject_cast<SyncableObject *>(obj))
539 return syncObject->syncMetaObject();
541 return obj->metaObject();
544 void SignalProxy::createClassInfo(QObject *obj) {
545 const QMetaObject *meta = metaObject(obj);
546 if(_classInfo.contains(meta))
549 ClassInfo *classInfo = new ClassInfo();
550 _classInfo[meta] = classInfo;
553 bool SignalProxy::attachSignal(QObject* sender, const char* signal, const QByteArray& sigName) {
554 const QMetaObject* meta = metaObject(sender);
555 QByteArray sig(meta->normalizedSignature(signal).mid(1));
556 int methodId = meta->indexOfMethod(sig.constData());
557 if(methodId == -1 || meta->method(methodId).methodType() != QMetaMethod::Signal) {
558 qWarning() << "SignalProxy::attachSignal(): No such signal" << signal;
562 createClassInfo(sender);
565 if(_relayHash.contains(sender))
566 relay = _relayHash[sender];
568 relay = _relayHash[sender] = new SignalRelay(this, sender);
570 relay->attachSignal(methodId, sigName);
576 bool SignalProxy::attachSlot(const QByteArray& sigName, QObject* recv, const char* slot) {
577 const QMetaObject* meta = recv->metaObject();
578 int methodId = meta->indexOfMethod(meta->normalizedSignature(slot).mid(1));
579 if(methodId == -1 || meta->method(methodId).methodType() == QMetaMethod::Method) {
580 qWarning() << "SignalProxy::attachSlot(): No such slot" << slot;
584 createClassInfo(recv);
586 QByteArray funcName = QMetaObject::normalizedSignature(sigName.constData());
587 _attachedSlots.insert(funcName, qMakePair(recv, methodId));
589 QObject::disconnect(recv, SIGNAL(destroyed()), this, SLOT(detachSender()));
590 QObject::connect(recv, SIGNAL(destroyed()), this, SLOT(detachSender()));
594 void SignalProxy::synchronize(SyncableObject *obj) {
595 createClassInfo(obj);
596 setUpdatedRemotelyId(obj);
598 // attaching all the Signals
600 if(_relayHash.contains(obj))
601 relay = _relayHash[obj];
603 relay = _relayHash[obj] = new SignalRelay(this, obj);
605 relay->setSynchronize(true);
607 // attaching as slave to receive sync Calls
608 QByteArray className(obj->syncMetaObject()->className());
609 _syncSlave[className][obj->objectName()] = obj;
611 if(proxyMode() == Server) {
612 connect(obj, SIGNAL(objectRenamed(QString, QString)), this, SLOT(objectRenamed(QString, QString)));
613 obj->setInitialized();
614 emit objectInitialized(obj);
616 if(obj->isInitialized())
617 emit objectInitialized(obj);
623 void SignalProxy::requestInit(SyncableObject *obj) {
624 if(proxyMode() == Server || obj->isInitialized())
628 params << obj->syncMetaObject()->className()
629 << obj->objectName();
630 dispatchSignal(InitRequest, params);
633 void SignalProxy::detachSender() {
634 detachObject(sender());
637 void SignalProxy::detachObject(QObject* obj) {
640 stopSync(static_cast<SyncableObject *>(obj));
643 void SignalProxy::detachSignals(QObject* sender) {
644 if(!_relayHash.contains(sender))
646 _relayHash.take(sender)->deleteLater();
649 void SignalProxy::detachSlots(QObject* receiver) {
650 SlotHash::iterator slotIter = _attachedSlots.begin();
651 while(slotIter != _attachedSlots.end()) {
652 if(slotIter.value().first == receiver) {
653 slotIter = _attachedSlots.erase(slotIter);
659 void SignalProxy::stopSync(SyncableObject* obj) {
660 if(_relayHash.contains(obj))
661 _relayHash[obj]->setSynchronize(false);
663 // we can't use a className here, since it might be effed up, if we receive the call as a result of a decon
664 // gladly the objectName() is still valid. So we have only to iterate over the classes not each instance! *sigh*
665 QHash<QByteArray, ObjectId>::iterator classIter = _syncSlave.begin();
666 while(classIter != _syncSlave.end()) {
667 if(classIter->contains(obj->objectName()) && classIter.value()[obj->objectName()] == obj) {
668 classIter->remove(obj->objectName());
675 void SignalProxy::dispatchSignal(QIODevice *receiver, const RequestType &requestType, const QVariantList ¶ms) {
676 Q_ASSERT(_peers.contains(receiver));
677 QVariantList packedFunc;
678 packedFunc << (qint16)requestType;
679 packedFunc << params;
680 writeDataToDevice(receiver, QVariant(packedFunc), _peers[receiver].usesCompression);
683 void SignalProxy::dispatchSignal(const RequestType &requestType, const QVariantList ¶ms) {
684 // yes I know we have a little code duplication here... it's for the sake of performance
685 QVariantList packedFunc;
686 packedFunc << (qint16)requestType;
687 packedFunc << params;
688 foreach(QIODevice* dev, _peers.keys()) {
689 Q_ASSERT(_peers.contains(dev));
690 writeDataToDevice(dev, QVariant(packedFunc), _peers[dev].usesCompression);
694 void SignalProxy::receivePeerSignal(QIODevice *sender, const QVariant &packedFunc) {
695 QVariantList params(packedFunc.toList());
697 if(params.isEmpty()) {
698 qWarning() << "SignalProxy::receivePeerSignal(): received incompatible Data:" << packedFunc;
702 int callType = params.takeFirst().value<int>();
707 qWarning() << "SignalProxy::receivePeerSignal(): received empty RPC-Call";
709 handleSignal(params.takeFirst().toByteArray(), params);
713 handleSync(sender, params);
717 handleInitRequest(sender, params);
721 handleInitData(sender, params);
725 receiveHeartBeat(sender);
729 qWarning() << "SignalProxy::receivePeerSignal(): received undefined CallType" << callType << params;
733 void SignalProxy::handleSync(QIODevice *sender, QVariantList params) {
734 if(params.count() < 3) {
735 qWarning() << "received invalid Sync call" << params;
739 QByteArray className = params.takeFirst().toByteArray();
740 QString objectName = params.takeFirst().toString();
741 QByteArray signal = params.takeFirst().toByteArray();
743 if(!_syncSlave.contains(className) || !_syncSlave[className].contains(objectName)) {
744 qWarning() << QString("no registered receiver for sync call: %1::%2 (objectName=\"%3\"). Params are:").arg(QString(className)).arg(QString(signal)).arg(objectName)
749 SyncableObject *receiver = _syncSlave[className][objectName];
750 if(!syncMap(receiver).contains(signal)) {
751 qWarning() << QString("no matching slot for sync call: %1::%2 (objectName=\"%3\"). Params are:").arg(QString(className)).arg(QString(signal)).arg(objectName)
756 int slotId = syncMap(receiver)[signal];
758 QVariant returnValue((QVariant::Type)returnType(receiver, slotId));
759 if(!invokeSlot(receiver, slotId, params, returnValue)) {
760 qWarning("SignalProxy::handleSync(): invokeMethod for \"%s\" failed ", methodName(receiver, slotId).constData());
764 if(returnValue.type() != QVariant::Invalid && receiveMap(receiver).contains(slotId)) {
765 int receiverId = receiveMap(receiver)[slotId];
766 QVariantList returnParams;
767 returnParams << className
769 << QByteArray(receiver->metaObject()->method(receiverId).signature());
770 if(argTypes(receiver, receiverId).count() > 1)
771 returnParams << params;
772 returnParams << returnValue;
773 dispatchSignal(sender, Sync, returnParams);
776 // send emit update signal
777 invokeSlot(receiver, updatedRemotelyId(receiver));
780 void SignalProxy::handleInitRequest(QIODevice *sender, const QVariantList ¶ms) {
781 if(params.count() != 2) {
782 qWarning() << "SignalProxy::handleInitRequest() received initRequest with invalid param Count:"
787 QByteArray className(params[0].toByteArray());
788 QString objectName(params[1].toString());
790 if(!_syncSlave.contains(className)) {
791 qWarning() << "SignalProxy::handleInitRequest() received initRequest for unregistered Class:"
796 if(!_syncSlave[className].contains(objectName)) {
797 qWarning() << "SignalProxy::handleInitRequest() received initRequest for unregistered Object:"
798 << className << objectName;
802 SyncableObject *obj = _syncSlave[className][objectName];
804 QVariantList params_;
809 dispatchSignal(sender, InitData, params_);
812 void SignalProxy::handleInitData(QIODevice *sender, const QVariantList ¶ms) {
814 if(params.count() != 3) {
815 qWarning() << "SignalProxy::handleInitData() received initData with invalid param Count:"
820 QByteArray className(params[0].toByteArray());
821 QString objectName(params[1].toString());
822 QVariantMap propertyMap(params[2].toMap());
824 if(!_syncSlave.contains(className)) {
825 qWarning() << "SignalProxy::handleInitData() received initData for unregistered Class:"
830 if(!_syncSlave[className].contains(objectName)) {
831 qWarning() << "SignalProxy::handleInitData() received initData for unregistered Object:"
832 << className << objectName;
836 SyncableObject *obj = _syncSlave[className][objectName];
837 setInitData(obj, propertyMap);
840 void SignalProxy::handleSignal(const QByteArray &funcName, const QVariantList ¶ms) {
843 SlotHash::const_iterator slot = _attachedSlots.constFind(funcName);
844 while(slot != _attachedSlots.constEnd() && slot.key() == funcName) {
845 receiver = (*slot).first;
846 methodId = (*slot).second;
847 if(!invokeSlot(receiver, methodId, params))
848 qWarning("SignalProxy::handleSignal(): invokeMethod for \"%s\" failed ", methodName(receiver, methodId).constData());
853 bool SignalProxy::invokeSlot(QObject *receiver, int methodId, const QVariantList ¶ms, QVariant &returnValue) {
854 const QList<int> args = argTypes(receiver, methodId);
855 const int numArgs = params.count() < args.count()
859 if(minArgCount(receiver, methodId) > params.count()) {
860 qWarning() << "SignalProxy::invokeSlot(): not enough params to invoke" << methodName(receiver, methodId);
864 void *_a[] = {0, // return type...
865 0, 0, 0, 0 , 0, // and 10 args - that's the max size qt can handle with signals and slots
868 // check for argument compatibility and build params array
869 for(int i = 0; i < numArgs; i++) {
870 if(!params[i].isValid()) {
871 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());
872 qWarning() << " - make sure all your data types are known by the Qt MetaSystem";
875 if(args[i] != QMetaType::type(params[i].typeName())) {
876 qWarning() << "SignalProxy::invokeSlot(): incompatible param types to invoke" << methodName(receiver, methodId);
879 _a[i+1] = const_cast<void *>(params[i].constData());
882 if(returnValue.type() != QVariant::Invalid)
883 _a[0] = const_cast<void *>(returnValue.constData());
885 Qt::ConnectionType type = QThread::currentThread() == receiver->thread()
886 ? Qt::DirectConnection
887 : Qt::QueuedConnection;
889 if (type == Qt::DirectConnection) {
890 return receiver->qt_metacall(QMetaObject::InvokeMetaMethod, methodId, _a) < 0;
892 qWarning() << "Queued Connections are not implemented yet";
893 // note to self: qmetaobject.cpp:990 ff
899 bool SignalProxy::invokeSlot(QObject *receiver, int methodId, const QVariantList ¶ms) {
901 return invokeSlot(receiver, methodId, params, ret);
904 void SignalProxy::dataAvailable() {
905 // yet again. it's a private slot. no need for checks.
906 QIODevice* ioDev = qobject_cast<QIODevice* >(sender());
907 Q_ASSERT(_peers.contains(ioDev));
909 while(readDataFromDevice(ioDev, _peers[ioDev].byteCount, var, _peers[ioDev].usesCompression))
910 receivePeerSignal(ioDev, var);
913 void SignalProxy::writeDataToDevice(QIODevice *dev, const QVariant &item, bool compressed) {
914 QAbstractSocket* sock = qobject_cast<QAbstractSocket*>(dev);
915 if(!dev->isOpen() || (sock && sock->state()!=QAbstractSocket::ConnectedState)) {
916 qWarning("SignalProxy: Can't call write on a closed device");
921 QDataStream out(&block, QIODevice::WriteOnly);
922 out.setVersion(QDataStream::Qt_4_2);
927 QDataStream itemStream(&rawItem, QIODevice::WriteOnly);
929 itemStream.setVersion(QDataStream::Qt_4_2);
932 rawItem = qCompress(rawItem);
939 out.device()->seek(0);
940 out << (quint32)(block.size() - sizeof(quint32));
945 bool SignalProxy::readDataFromDevice(QIODevice *dev, quint32 &blockSize, QVariant &item, bool compressed) {
947 in.setVersion(QDataStream::Qt_4_2);
950 if(dev->bytesAvailable() < (int)sizeof(quint32)) return false;
954 if(blockSize > 1 << 22) {
955 qWarning() << qPrintable(tr("Client tried to send package larger than max package size!"));
956 QAbstractSocket *sock = qobject_cast<QAbstractSocket *>(dev);
957 qWarning() << qPrintable(tr("Disconnecting")) << (sock ? qPrintable(sock->peerAddress().toString()) : qPrintable(tr("local client")));
962 if(dev->bytesAvailable() < blockSize)
968 rawItem = qUncompress(rawItem);
970 QDataStream itemStream(&rawItem, QIODevice::ReadOnly);
971 itemStream.setVersion(QDataStream::Qt_4_2);
982 bool SignalProxy::methodsMatch(const QMetaMethod &signal, const QMetaMethod &slot) const {
983 // if we don't even have the same basename it's a sure NO
984 if(methodBaseName(signal) != methodBaseName(slot))
987 // are the signatures compatible?
988 if(!QObject::staticMetaObject.checkConnectArgs(signal.signature(), slot.signature()))
991 // we take an educated guess if the signals and slots match
992 QString signalsuffix = ::methodName(signal).mid(QString(::methodName(signal)).lastIndexOf(QRegExp("[A-Z]"))).toLower();
993 QString slotprefix = ::methodName(slot).left(QString(::methodName(slot)).indexOf(QRegExp("[A-Z]"))).toLower();
995 uint sizediff = qAbs(slotprefix.size() - signalsuffix.size());
996 int ratio = editingDistance(slotprefix, signalsuffix) - sizediff;
1000 QString SignalProxy::methodBaseName(const QMetaMethod &method) {
1001 QString methodname = QString(method.signature()).section("(", 0, 0);
1003 // determine where we have to chop:
1005 if(method.methodType() == QMetaMethod::Slot) {
1006 // we take evertyhing from the first uppercase char if it's slot
1007 upperCharPos = methodname.indexOf(QRegExp("[A-Z]"));
1008 if(upperCharPos == -1)
1010 methodname = methodname.mid(upperCharPos);
1012 // and if it's a signal we discard everything from the last uppercase char
1013 upperCharPos = methodname.lastIndexOf(QRegExp("[A-Z]"));
1014 if(upperCharPos == -1)
1016 methodname = methodname.left(upperCharPos);
1019 methodname[0] = methodname[0].toUpper();
1024 QVariantMap SignalProxy::initData(SyncableObject *obj) const {
1025 return obj->toVariantMap();
1028 void SignalProxy::setInitData(SyncableObject *obj, const QVariantMap &properties) {
1029 if(obj->isInitialized())
1031 obj->fromVariantMap(properties);
1032 obj->setInitialized();
1033 emit objectInitialized(obj);
1034 invokeSlot(obj, updatedRemotelyId(obj));
1037 void SignalProxy::sendHeartBeat() {
1038 dispatchSignal(SignalProxy::HeartBeat, QVariantList());
1039 QHash<QIODevice *, peerInfo>::iterator peerIter = _peers.begin();
1040 QHash<QIODevice *, peerInfo>::iterator peerIterEnd = _peers.end();
1041 while(peerIter != peerIterEnd) {
1042 if(peerIter->sentHeartBeats > 1) {
1043 QAbstractSocket *socket = qobject_cast<QAbstractSocket *>(peerIter.key());
1044 qWarning() << "SignalProxy: Disconnecting peer:"
1045 << (socket ? qPrintable(socket->peerAddress().toString()) : "local client")
1046 << "(didn't receive a heartbeat for over" << peerIter->sentHeartBeats * _heartBeatTimer.interval() / 1000 << "seconds)";
1047 peerIter.key()->close();
1049 peerIter->sentHeartBeats++;
1055 void SignalProxy::receiveHeartBeat(QIODevice *dev) {
1056 if(!_peers.contains(dev)) {
1057 qWarning() << "SignalProxy: received heart beat from unknown Device:" << dev;
1061 _peers[dev].sentHeartBeats = 0;
1064 void SignalProxy::dumpProxyStats() {
1066 if(proxyMode() == Server)
1072 foreach(SignalRelay *relay, _relayHash.values())
1073 sigCount += relay->sigCount();
1076 foreach(ObjectId oid, _syncSlave.values())
1077 slaveCount += oid.count();
1080 qDebug() << " Proxy Mode:" << mode;
1081 qDebug() << "attached sending Objects:" << _relayHash.count();
1082 qDebug() << " number of Signals:" << sigCount;
1083 qDebug() << " attached Slots:" << _attachedSlots.count();
1084 qDebug() << " number of synced Slaves:" << slaveCount;
1085 qDebug() << "number of Classes cached:" << _classInfo.count();
1088 void SignalProxy::dumpSyncMap(SyncableObject *object) {
1089 const QMetaObject *meta = object->metaObject();
1090 qDebug() << "SignalProxy: SyncMap for Class" << meta->className();
1092 QHash<QByteArray, int> syncMap_ = syncMap(object);
1093 QHash<QByteArray, int>::const_iterator iter = syncMap_.constBegin();
1094 while(iter != syncMap_.constEnd()) {
1095 qDebug() << iter.key() << "-->" << iter.value() << meta->method(iter.value()).signature();
1098 // QHash<int, int> syncMap_ = syncMap(object);
1099 // QHash<int, int>::const_iterator iter = syncMap_.constBegin();
1100 // while(iter != syncMap_.constEnd()) {
1101 // qDebug() << iter.key() << meta->method(iter.key()).signature() << "-->" << iter.value() << meta->method(iter.value()).signature();