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 "syncableobject.h"
42 // ==================================================
44 // ==================================================
45 class SignalRelay: public QObject {
46 /* Q_OBJECT is not necessary or even allowed, because we implement
47 qt_metacall ourselves (and don't use any other features of the meta
51 SignalRelay(SignalProxy* parent, QObject* source);
52 int qt_metacall(QMetaObject::Call _c, int _id, void **_a);
54 void attachSignal(int methodId, const QByteArray &func);
56 void setSynchronize(bool);
57 bool synchronize() const;
62 bool isSyncMethod(int i);
66 QMultiHash<int, QByteArray> sigNames;
70 SignalRelay::SignalRelay(SignalProxy* parent, QObject* source)
76 QObject::connect(source, SIGNAL(destroyed()), parent, SLOT(detachSender()));
79 int SignalRelay::qt_metacall(QMetaObject::Call _c, int _id, void **_a) {
80 _id = QObject::qt_metacall(_c, _id, _a);
83 if(_c == QMetaObject::InvokeMetaMethod) {
84 if(sigNames.contains(_id) || synchronize()) {
85 const QList<int> &argTypes = proxy->argTypes(caller, _id);
87 int n = argTypes.size();
88 for(int i=0; i<n; i++) {
89 if(argTypes[i] == 0) {
90 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());
91 qWarning() << " - make sure all your data types are known by the Qt MetaSystem";
94 params.append(QVariant(argTypes[i], _a[i+1]));
96 QMultiHash<int, QByteArray>::const_iterator funcIter = sigNames.constFind(_id);
97 while(funcIter != sigNames.constEnd() && funcIter.key() == _id) {
98 proxy->dispatchSignal(SignalProxy::RpcCall, QVariantList() << funcIter.value() << params);
102 // dispatch Sync Signal if necessary
103 QByteArray signature(caller->metaObject()->method(_id).signature());
104 SyncableObject *syncObject = qobject_cast<SyncableObject *>(caller);
105 if(synchronize() && proxy->syncMap(syncObject).contains(signature)) {
106 //qDebug() << "__SYNC__ >>>"
107 // << caller->metaObject()->className()
108 // << caller->objectName()
111 // params.prepend(QVariant(_id));
112 params.prepend(signature);
113 params.prepend(syncObject->objectName());
114 params.prepend(syncObject->syncMetaObject()->className());
115 proxy->dispatchSignal(SignalProxy::Sync, params);
118 _id -= QObject::staticMetaObject.methodCount();
123 void SignalRelay::setSynchronize(bool sync) {
124 SyncableObject *syncObject = qobject_cast<SyncableObject *>(caller);
128 const QMetaObject *meta = syncObject->syncMetaObject();
131 for(int i = 0; i < meta->methodCount(); i++ ) {
133 QMetaObject::connect(caller, i, this, QObject::staticMetaObject.methodCount() + i);
135 } else if (_sync && !sync) {
137 for(int i = 0; i < meta->methodCount(); i++ ) {
139 QMetaObject::disconnect(caller, i, this, QObject::staticMetaObject.methodCount() + i);
145 bool SignalRelay::isSyncMethod(int i) {
146 SyncableObject *syncObject = qobject_cast<SyncableObject *>(caller);
150 QByteArray signature = syncObject->syncMetaObject()->method(i).signature();
151 if(!proxy->syncMap(syncObject).contains(signature))
154 if(proxy->proxyMode() == SignalProxy::Server && !signature.contains("Requested"))
157 if(proxy->proxyMode() == SignalProxy::Client && signature.contains("Requested"))
163 bool SignalRelay::synchronize() const {
167 int SignalRelay::sigCount() const {
168 // only for debuging purpose
169 return sigNames.count();
172 void SignalRelay::attachSignal(int methodId, const QByteArray &func) {
173 // we ride without safetybelts here... all checking for valid method etc pp has to be done by the caller
174 // all connected methodIds are offset by the standard methodCount of QObject
175 if(!sigNames.contains(methodId))
176 QMetaObject::connect(caller, methodId, this, QObject::staticMetaObject.methodCount() + methodId);
179 if(!func.isEmpty()) {
180 fn = QMetaObject::normalizedSignature(func);
182 fn = QByteArray("2") + caller->metaObject()->method(methodId).signature();
184 sigNames.insert(methodId, fn);
187 // ==================================================
189 // ==================================================
190 void SignalProxy::IODevicePeer::dispatchSignal(const RequestType &requestType, const QVariantList ¶ms) {
191 QVariantList packedFunc;
192 packedFunc << (qint16)requestType
194 dispatchPackedFunc(QVariant(packedFunc));
197 // ==================================================
199 // ==================================================
200 SignalProxy::SignalProxy(QObject* parent)
203 setProxyMode(Client);
207 SignalProxy::SignalProxy(ProxyMode mode, QObject* parent)
214 SignalProxy::SignalProxy(ProxyMode mode, QIODevice* device, QObject* parent)
222 SignalProxy::~SignalProxy() {
223 QList<QObject*> senders = _relayHash.keys();
224 foreach(QObject* sender, senders)
225 detachObject(sender);
229 void SignalProxy::setProxyMode(ProxyMode mode) {
230 PeerHash::iterator peer = _peers.begin();
231 while(peer != _peers.end()) {
232 if((*peer)->type() != AbstractPeer::IODevicePeer) {
233 IODevicePeer *ioPeer = static_cast<IODevicePeer *>(*peer);
234 if(ioPeer->isOpen()) {
235 qWarning() << "SignalProxy: Cannot change proxy mode while connected";
239 if((*peer)->type() != AbstractPeer::SignalProxyPeer) {
240 qWarning() << "SignalProxy: Cannot change proxy mode while connected to another internal SignalProxy";
253 void SignalProxy::init() {
254 connect(&_heartBeatTimer, SIGNAL(timeout()), this, SLOT(sendHeartBeat()));
255 _heartBeatTimer.start(30 * 1000);
258 void SignalProxy::initServer() {
261 void SignalProxy::initClient() {
262 attachSlot("__objectRenamed__", this, SLOT(objectRenamed(QByteArray, QString, QString)));
265 bool SignalProxy::addPeer(QIODevice* iodev) {
269 if(_peers.contains(iodev))
272 if(proxyMode() == Client && !_peers.isEmpty()) {
273 qWarning("SignalProxy: only one peer allowed in client mode!");
278 qWarning("SignalProxy::the device you passed is not open!");
280 connect(iodev, SIGNAL(disconnected()), this, SLOT(removePeerBySender()));
281 connect(iodev, SIGNAL(readyRead()), this, SLOT(dataAvailable()));
283 QAbstractSocket* sock = qobject_cast<QAbstractSocket*>(iodev);
285 connect(sock, SIGNAL(disconnected()), this, SLOT(removePeerBySender()));
288 _peers[iodev] = new IODevicePeer(iodev, iodev->property("UseCompression").toBool());
290 if(_peers.count() == 1)
296 void SignalProxy::removeAllPeers() {
297 Q_ASSERT(proxyMode() == Server || _peers.count() <= 1);
298 // wee need to copy that list since we modify it in the loop
299 QList<QObject *> peers = _peers.keys();
300 foreach(QObject *peer, peers) {
305 void SignalProxy::removePeer(QObject* dev) {
306 if(_peers.isEmpty()) {
307 qWarning() << "SignalProxy::removePeer(): No peers in use!";
312 if(!_peers.contains(dev)) {
313 qWarning() << "SignalProxy: unknown Peer" << dev;
317 AbstractPeer *peer = _peers[dev];
320 disconnect(dev, 0, this, 0);
321 if(peer->type() == AbstractPeer::IODevicePeer)
322 emit peerRemoved(static_cast<QIODevice *>(dev));
330 void SignalProxy::removePeerBySender() {
331 removePeer(sender());
334 void SignalProxy::objectRenamed(const QString &newname, const QString &oldname) {
335 SyncableObject *syncObject = qobject_cast<SyncableObject *>(sender());
336 const QMetaObject *meta = syncObject->metaObject();
337 const QByteArray className(meta->className());
338 objectRenamed(className, newname, oldname);
340 if(proxyMode() == Client)
344 params << "__objectRenamed__" << className << newname << oldname;
345 dispatchSignal(RpcCall, params);
348 void SignalProxy::objectRenamed(const QByteArray &classname, const QString &newname, const QString &oldname) {
349 if(_syncSlave.contains(classname) && _syncSlave[classname].contains(oldname) && oldname != newname) {
350 SyncableObject *obj = _syncSlave[classname][newname] = _syncSlave[classname].take(oldname);
355 void SignalProxy::setArgTypes(QObject* obj, int methodId) {
356 const QMetaObject *meta = metaObject(obj);
357 QList<QByteArray> p = meta->method(methodId).parameterTypes();
360 for(int i=0; i<ct; i++)
361 argTypes.append(QMetaType::type(p.value(i)));
363 Q_ASSERT(!_classInfo[meta]->argTypes.contains(methodId));
364 _classInfo[meta]->argTypes[methodId] = argTypes;
367 const QList<int> &SignalProxy::argTypes(QObject *obj, int methodId) {
368 const QMetaObject *meta = metaObject(obj);
369 Q_ASSERT(_classInfo.contains(meta));
370 if(!_classInfo[meta]->argTypes.contains(methodId))
371 setArgTypes(obj, methodId);
372 return _classInfo[meta]->argTypes[methodId];
375 void SignalProxy::setReturnType(QObject *obj, int methodId) {
376 const QMetaObject *meta = metaObject(obj);
377 int returnType = QMetaType::type(meta->method(methodId).typeName());
379 Q_ASSERT(!_classInfo[meta]->returnType.contains(methodId));
380 _classInfo[meta]->returnType[methodId] = returnType;
383 const int &SignalProxy::returnType(QObject *obj, int methodId) {
384 const QMetaObject *meta = metaObject(obj);
385 Q_ASSERT(_classInfo.contains(meta));
386 if(!_classInfo[meta]->returnType.contains(methodId))
387 setReturnType(obj, methodId);
388 return _classInfo[meta]->returnType[methodId];
391 void SignalProxy::setMinArgCount(QObject *obj, int methodId) {
392 const QMetaObject *meta = metaObject(obj);
393 QString signature(meta->method(methodId).signature());
394 int minCount = meta->method(methodId).parameterTypes().count() - signature.count("=");
395 Q_ASSERT(!_classInfo[meta]->minArgCount.contains(methodId));
396 _classInfo[meta]->minArgCount[methodId] = minCount;
399 const int &SignalProxy::minArgCount(QObject *obj, int methodId) {
400 const QMetaObject *meta = metaObject(obj);
401 Q_ASSERT(_classInfo.contains(meta));
402 if(!_classInfo[meta]->minArgCount.contains(methodId))
403 setMinArgCount(obj, methodId);
404 return _classInfo[meta]->minArgCount[methodId];
407 void SignalProxy::setMethodName(QObject *obj, int methodId) {
408 const QMetaObject *meta = metaObject(obj);
409 QByteArray method(::methodName(meta->method(methodId)));
410 Q_ASSERT(!_classInfo[meta]->methodNames.contains(methodId));
411 _classInfo[meta]->methodNames[methodId] = method;
414 const QByteArray &SignalProxy::methodName(QObject *obj, int methodId) {
415 const QMetaObject *meta = metaObject(obj);
416 Q_ASSERT(_classInfo.contains(meta));
417 if(!_classInfo[meta]->methodNames.contains(methodId))
418 setMethodName(obj, methodId);
419 return _classInfo[meta]->methodNames[methodId];
423 void SignalProxy::setSyncMap(SyncableObject *obj) {
424 const QMetaObject *meta = obj->syncMetaObject();
425 QHash<QByteArray, int> syncMap;
427 QList<int> slotIndexes;
428 for(int i = 0; i < meta->methodCount(); i++) {
429 if(meta->method(i).methodType() == QMetaMethod::Slot)
433 // we're faking sync pairs for sync replies
434 QByteArray slotSignature;
435 foreach(int slotIdx, slotIndexes) {
436 slotSignature = QByteArray(meta->method(slotIdx).signature());
437 if(!slotSignature.startsWith("receive"))
439 syncMap[slotSignature] = slotIdx;
442 QMetaMethod signal, slot;
444 for(int signalIdx = 0; signalIdx < meta->methodCount(); signalIdx++) {
445 signal = meta->method(signalIdx);
446 if(signal.methodType() != QMetaMethod::Signal)
450 foreach(int slotIdx, slotIndexes) {
451 slot = meta->method(slotIdx);
452 if(methodsMatch(signal, slot)) {
458 slotIndexes.removeAt(slotIndexes.indexOf(matchIdx));
459 syncMap[QByteArray(signal.signature())] = matchIdx;
463 Q_ASSERT(_classInfo[meta]->syncMap.isEmpty());
464 _classInfo[meta]->syncMap = syncMap;
467 const QHash<QByteArray,int> &SignalProxy::syncMap(SyncableObject *obj) {
468 const QMetaObject *meta = obj->syncMetaObject();
469 Q_ASSERT(_classInfo.contains(meta));
470 if(_classInfo[meta]->syncMap.isEmpty())
472 return _classInfo[meta]->syncMap;
475 void SignalProxy::setReceiveMap(SyncableObject *obj) {
476 const QMetaObject *meta = obj->syncMetaObject();
477 Q_ASSERT(_classInfo.contains(meta));
479 QHash<int, int> receiveMap;
481 QMetaMethod requestSlot;
482 QByteArray returnTypeName;
483 QByteArray signature;
484 QByteArray methodName;
488 const int methodCount = meta->methodCount();
489 for(int i = 0; i < methodCount; i++) {
490 requestSlot = meta->method(i);
491 if(requestSlot.methodType() != QMetaMethod::Slot)
494 returnTypeName = requestSlot.typeName();
495 if(QMetaType::Void == (QMetaType::Type)returnType(obj, i))
498 signature = QByteArray(requestSlot.signature());
499 if(!signature.startsWith("request"))
502 paramsPos = signature.indexOf('(');
506 methodName = signature.left(paramsPos);
507 params = signature.mid(paramsPos);
509 methodName = methodName.replace("request", "receive");
510 params = params.left(params.count() - 1) + ", " + returnTypeName + ")";
512 signature = QMetaObject::normalizedSignature(methodName + params);
513 receiverId = meta->indexOfSlot(signature);
515 if(receiverId == -1) {
516 signature = QMetaObject::normalizedSignature(methodName + "(" + returnTypeName + ")");
517 receiverId = meta->indexOfSlot(signature);
521 receiveMap[i] = receiverId;
523 _classInfo[meta]->receiveMap = receiveMap;
526 const QHash<int, int> &SignalProxy::receiveMap(SyncableObject *obj) {
527 const QMetaObject *meta = obj->syncMetaObject();
528 Q_ASSERT(_classInfo.contains(meta));
529 if(_classInfo[meta]->receiveMap.isEmpty())
531 return _classInfo[meta]->receiveMap;
534 void SignalProxy::setUpdatedRemotelyId(SyncableObject *obj) {
535 const QMetaObject *meta = obj->syncMetaObject();
536 Q_ASSERT(_classInfo.contains(meta));
537 _classInfo[meta]->updatedRemotelyId = meta->indexOfSignal("updatedRemotely()");
540 int SignalProxy::updatedRemotelyId(SyncableObject *obj) {
541 Q_ASSERT(_classInfo.contains(obj->syncMetaObject()));
542 return _classInfo[obj->syncMetaObject()]->updatedRemotelyId;
545 const QMetaObject *SignalProxy::metaObject(QObject *obj) {
546 if(SyncableObject *syncObject = qobject_cast<SyncableObject *>(obj))
547 return syncObject->syncMetaObject();
549 return obj->metaObject();
552 void SignalProxy::createClassInfo(QObject *obj) {
553 const QMetaObject *meta = metaObject(obj);
554 if(_classInfo.contains(meta))
557 ClassInfo *classInfo = new ClassInfo();
558 _classInfo[meta] = classInfo;
561 bool SignalProxy::attachSignal(QObject* sender, const char* signal, const QByteArray& sigName) {
562 const QMetaObject* meta = metaObject(sender);
563 QByteArray sig(meta->normalizedSignature(signal).mid(1));
564 int methodId = meta->indexOfMethod(sig.constData());
565 if(methodId == -1 || meta->method(methodId).methodType() != QMetaMethod::Signal) {
566 qWarning() << "SignalProxy::attachSignal(): No such signal" << signal;
570 createClassInfo(sender);
573 if(_relayHash.contains(sender))
574 relay = _relayHash[sender];
576 relay = _relayHash[sender] = new SignalRelay(this, sender);
578 relay->attachSignal(methodId, sigName);
584 bool SignalProxy::attachSlot(const QByteArray& sigName, QObject* recv, const char* slot) {
585 const QMetaObject* meta = recv->metaObject();
586 int methodId = meta->indexOfMethod(meta->normalizedSignature(slot).mid(1));
587 if(methodId == -1 || meta->method(methodId).methodType() == QMetaMethod::Method) {
588 qWarning() << "SignalProxy::attachSlot(): No such slot" << slot;
592 createClassInfo(recv);
594 QByteArray funcName = QMetaObject::normalizedSignature(sigName.constData());
595 _attachedSlots.insert(funcName, qMakePair(recv, methodId));
597 QObject::disconnect(recv, SIGNAL(destroyed()), this, SLOT(detachSender()));
598 QObject::connect(recv, SIGNAL(destroyed()), this, SLOT(detachSender()));
602 void SignalProxy::synchronize(SyncableObject *obj) {
603 createClassInfo(obj);
604 setUpdatedRemotelyId(obj);
606 // attaching all the Signals
608 if(_relayHash.contains(obj))
609 relay = _relayHash[obj];
611 relay = _relayHash[obj] = new SignalRelay(this, obj);
613 relay->setSynchronize(true);
615 // attaching as slave to receive sync Calls
616 QByteArray className(obj->syncMetaObject()->className());
617 _syncSlave[className][obj->objectName()] = obj;
619 if(proxyMode() == Server) {
620 connect(obj, SIGNAL(objectRenamed(QString, QString)), this, SLOT(objectRenamed(QString, QString)));
621 obj->setInitialized();
622 emit objectInitialized(obj);
624 if(obj->isInitialized())
625 emit objectInitialized(obj);
631 void SignalProxy::requestInit(SyncableObject *obj) {
632 if(proxyMode() == Server || obj->isInitialized())
636 params << obj->syncMetaObject()->className()
637 << obj->objectName();
638 dispatchSignal(InitRequest, params);
641 void SignalProxy::detachSender() {
642 detachObject(sender());
645 void SignalProxy::detachObject(QObject* obj) {
648 stopSync(static_cast<SyncableObject *>(obj));
651 void SignalProxy::detachSignals(QObject* sender) {
652 if(!_relayHash.contains(sender))
654 _relayHash.take(sender)->deleteLater();
657 void SignalProxy::detachSlots(QObject* receiver) {
658 SlotHash::iterator slotIter = _attachedSlots.begin();
659 while(slotIter != _attachedSlots.end()) {
660 if(slotIter.value().first == receiver) {
661 slotIter = _attachedSlots.erase(slotIter);
667 void SignalProxy::stopSync(SyncableObject* obj) {
668 if(_relayHash.contains(obj))
669 _relayHash[obj]->setSynchronize(false);
671 // we can't use a className here, since it might be effed up, if we receive the call as a result of a decon
672 // gladly the objectName() is still valid. So we have only to iterate over the classes not each instance! *sigh*
673 QHash<QByteArray, ObjectId>::iterator classIter = _syncSlave.begin();
674 while(classIter != _syncSlave.end()) {
675 if(classIter->contains(obj->objectName()) && classIter.value()[obj->objectName()] == obj) {
676 classIter->remove(obj->objectName());
683 void SignalProxy::dispatchSignal(const RequestType &requestType, const QVariantList ¶ms) {
684 QVariant packedFunc(QVariantList() << (qint16)requestType << params);
685 PeerHash::iterator peer = _peers.begin();
686 while(peer != _peers.end()) {
687 switch((*peer)->type()) {
688 case AbstractPeer::IODevicePeer:
690 IODevicePeer *ioPeer = static_cast<IODevicePeer *>(*peer);
691 ioPeer->dispatchPackedFunc(packedFunc);
694 case AbstractPeer::SignalProxyPeer:
695 (*peer)->dispatchSignal(requestType, params);
698 Q_ASSERT(false); // there shouldn't be any peers with wrong / unknown type
704 void SignalProxy::receivePackedFunc(AbstractPeer *sender, const QVariant &packedFunc) {
705 QVariantList params(packedFunc.toList());
707 if(params.isEmpty()) {
708 qWarning() << "SignalProxy::receivePeerSignal(): received incompatible Data:" << packedFunc;
712 RequestType requestType = (RequestType)params.takeFirst().value<int>();
713 receivePeerSignal(sender, requestType, params);
716 void SignalProxy::receivePeerSignal(AbstractPeer *sender, const RequestType &requestType, const QVariantList ¶ms) {
717 switch(requestType) {
720 qWarning() << "SignalProxy::receivePeerSignal(): received empty RPC-Call";
722 handleSignal(params);
723 //handleSignal(params.takeFirst().toByteArray(), params);
727 handleSync(sender, params);
731 handleInitRequest(sender, params);
735 handleInitData(sender, params);
739 receiveHeartBeat(sender, params);
743 receiveHeartBeatReply(sender, params);
747 qWarning() << "SignalProxy::receivePeerSignal(): received undefined CallType" << requestType << params;
751 void SignalProxy::handleSync(AbstractPeer *sender, QVariantList params) {
752 if(params.count() < 3) {
753 qWarning() << "received invalid Sync call" << params;
757 QByteArray className = params.takeFirst().toByteArray();
758 QString objectName = params.takeFirst().toString();
759 QByteArray signal = params.takeFirst().toByteArray();
761 if(!_syncSlave.contains(className) || !_syncSlave[className].contains(objectName)) {
762 qWarning() << QString("no registered receiver for sync call: %1::%2 (objectName=\"%3\"). Params are:").arg(QString(className)).arg(QString(signal)).arg(objectName)
767 SyncableObject *receiver = _syncSlave[className][objectName];
768 if(!syncMap(receiver).contains(signal)) {
769 qWarning() << QString("no matching slot for sync call: %1::%2 (objectName=\"%3\"). Params are:").arg(QString(className)).arg(QString(signal)).arg(objectName)
774 int slotId = syncMap(receiver)[signal];
776 QVariant returnValue((QVariant::Type)returnType(receiver, slotId));
777 if(!invokeSlot(receiver, slotId, params, returnValue)) {
778 qWarning("SignalProxy::handleSync(): invokeMethod for \"%s\" failed ", methodName(receiver, slotId).constData());
782 if(returnValue.type() != QVariant::Invalid && receiveMap(receiver).contains(slotId)) {
783 int receiverId = receiveMap(receiver)[slotId];
784 QVariantList returnParams;
785 returnParams << className
787 << QByteArray(receiver->metaObject()->method(receiverId).signature());
788 if(argTypes(receiver, receiverId).count() > 1)
789 returnParams << params;
790 returnParams << returnValue;
791 sender->dispatchSignal(Sync, returnParams);
794 // send emit update signal
795 invokeSlot(receiver, updatedRemotelyId(receiver));
798 void SignalProxy::handleInitRequest(AbstractPeer *sender, const QVariantList ¶ms) {
799 if(params.count() != 2) {
800 qWarning() << "SignalProxy::handleInitRequest() received initRequest with invalid param Count:"
805 QByteArray className(params[0].toByteArray());
806 QString objectName(params[1].toString());
808 if(!_syncSlave.contains(className)) {
809 qWarning() << "SignalProxy::handleInitRequest() received initRequest for unregistered Class:"
814 if(!_syncSlave[className].contains(objectName)) {
815 qWarning() << "SignalProxy::handleInitRequest() received initRequest for unregistered Object:"
816 << className << objectName;
820 SyncableObject *obj = _syncSlave[className][objectName];
822 QVariantList params_;
827 sender->dispatchSignal(InitData, params_);
830 void SignalProxy::handleInitData(AbstractPeer *sender, const QVariantList ¶ms) {
832 if(params.count() != 3) {
833 qWarning() << "SignalProxy::handleInitData() received initData with invalid param Count:"
838 QByteArray className(params[0].toByteArray());
839 QString objectName(params[1].toString());
840 QVariantMap propertyMap(params[2].toMap());
842 if(!_syncSlave.contains(className)) {
843 qWarning() << "SignalProxy::handleInitData() received initData for unregistered Class:"
848 if(!_syncSlave[className].contains(objectName)) {
849 qWarning() << "SignalProxy::handleInitData() received initData for unregistered Object:"
850 << className << objectName;
854 SyncableObject *obj = _syncSlave[className][objectName];
855 setInitData(obj, propertyMap);
858 //void SignalProxy::handleSignal(const QByteArray &funcName, const QVariantList ¶ms) {
859 void SignalProxy::handleSignal(const QVariantList &data) {
860 QVariantList params = data;
861 QByteArray funcName = params.takeFirst().toByteArray();
865 SlotHash::const_iterator slot = _attachedSlots.constFind(funcName);
866 while(slot != _attachedSlots.constEnd() && slot.key() == funcName) {
867 receiver = (*slot).first;
868 methodId = (*slot).second;
869 if(!invokeSlot(receiver, methodId, params))
870 qWarning("SignalProxy::handleSignal(): invokeMethod for \"%s\" failed ", methodName(receiver, methodId).constData());
875 bool SignalProxy::invokeSlot(QObject *receiver, int methodId, const QVariantList ¶ms, QVariant &returnValue) {
876 const QList<int> args = argTypes(receiver, methodId);
877 const int numArgs = params.count() < args.count()
881 if(minArgCount(receiver, methodId) > params.count()) {
882 qWarning() << "SignalProxy::invokeSlot(): not enough params to invoke" << methodName(receiver, methodId);
886 void *_a[] = {0, // return type...
887 0, 0, 0, 0 , 0, // and 10 args - that's the max size qt can handle with signals and slots
890 // check for argument compatibility and build params array
891 for(int i = 0; i < numArgs; i++) {
892 if(!params[i].isValid()) {
893 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());
894 qWarning() << " - make sure all your data types are known by the Qt MetaSystem";
897 if(args[i] != QMetaType::type(params[i].typeName())) {
898 qWarning() << "SignalProxy::invokeSlot(): incompatible param types to invoke" << methodName(receiver, methodId);
901 _a[i+1] = const_cast<void *>(params[i].constData());
904 if(returnValue.type() != QVariant::Invalid)
905 _a[0] = const_cast<void *>(returnValue.constData());
907 Qt::ConnectionType type = QThread::currentThread() == receiver->thread()
908 ? Qt::DirectConnection
909 : Qt::QueuedConnection;
911 if (type == Qt::DirectConnection) {
912 return receiver->qt_metacall(QMetaObject::InvokeMetaMethod, methodId, _a) < 0;
914 qWarning() << "Queued Connections are not implemented yet";
915 // note to self: qmetaobject.cpp:990 ff
921 bool SignalProxy::invokeSlot(QObject *receiver, int methodId, const QVariantList ¶ms) {
923 return invokeSlot(receiver, methodId, params, ret);
926 void SignalProxy::dataAvailable() {
927 // yet again. it's a private slot. no need for checks.
928 QIODevice* ioDev = qobject_cast<QIODevice* >(sender());
929 Q_ASSERT(_peers.contains(ioDev) && _peers[ioDev]->type() == AbstractPeer::IODevicePeer);
930 IODevicePeer *peer = static_cast<IODevicePeer *>(_peers[ioDev]);
932 while(peer->readData(var))
933 receivePackedFunc(peer, var);
936 void SignalProxy::writeDataToDevice(QIODevice *dev, const QVariant &item, bool compressed) {
937 QAbstractSocket* sock = qobject_cast<QAbstractSocket*>(dev);
938 if(!dev->isOpen() || (sock && sock->state()!=QAbstractSocket::ConnectedState)) {
939 qWarning("SignalProxy: Can't call write on a closed device");
944 QDataStream out(&block, QIODevice::WriteOnly);
945 out.setVersion(QDataStream::Qt_4_2);
950 QDataStream itemStream(&rawItem, QIODevice::WriteOnly);
952 itemStream.setVersion(QDataStream::Qt_4_2);
955 rawItem = qCompress(rawItem);
962 out.device()->seek(0);
963 out << (quint32)(block.size() - sizeof(quint32));
968 bool SignalProxy::readDataFromDevice(QIODevice *dev, quint32 &blockSize, QVariant &item, bool compressed) {
970 in.setVersion(QDataStream::Qt_4_2);
973 if(dev->bytesAvailable() < (int)sizeof(quint32)) return false;
977 if(blockSize > 1 << 22) {
978 qWarning() << qPrintable(tr("Client tried to send package larger than max package size!"));
979 QAbstractSocket *sock = qobject_cast<QAbstractSocket *>(dev);
980 qWarning() << qPrintable(tr("Disconnecting")) << (sock ? qPrintable(sock->peerAddress().toString()) : qPrintable(tr("local client")));
985 if(dev->bytesAvailable() < blockSize)
992 int nbytes = rawItem.size();
994 const char *data = rawItem.constData();
995 if (nbytes < 4 || (data[0]!=0 || data[1]!=0 || data[2]!=0 || data[3]!=0))
996 qWarning() << "receieved corrupted compressed data:"
997 << blockSize << rawItem << rawItem.size() << dev;
1000 rawItem = qUncompress(rawItem);
1002 QDataStream itemStream(&rawItem, QIODevice::ReadOnly);
1003 itemStream.setVersion(QDataStream::Qt_4_2);
1014 bool SignalProxy::methodsMatch(const QMetaMethod &signal, const QMetaMethod &slot) const {
1015 // if we don't even have the same basename it's a sure NO
1016 if(methodBaseName(signal) != methodBaseName(slot))
1019 // are the signatures compatible?
1020 if(!QObject::staticMetaObject.checkConnectArgs(signal.signature(), slot.signature()))
1023 // we take an educated guess if the signals and slots match
1024 QString signalsuffix = ::methodName(signal).mid(QString(::methodName(signal)).lastIndexOf(QRegExp("[A-Z]"))).toLower();
1025 QString slotprefix = ::methodName(slot).left(QString(::methodName(slot)).indexOf(QRegExp("[A-Z]"))).toLower();
1027 uint sizediff = qAbs(slotprefix.size() - signalsuffix.size());
1028 int ratio = editingDistance(slotprefix, signalsuffix) - sizediff;
1032 QString SignalProxy::methodBaseName(const QMetaMethod &method) {
1033 QString methodname = QString(method.signature()).section("(", 0, 0);
1035 // determine where we have to chop:
1037 if(method.methodType() == QMetaMethod::Slot) {
1038 // we take evertyhing from the first uppercase char if it's slot
1039 upperCharPos = methodname.indexOf(QRegExp("[A-Z]"));
1040 if(upperCharPos == -1)
1042 methodname = methodname.mid(upperCharPos);
1044 // and if it's a signal we discard everything from the last uppercase char
1045 upperCharPos = methodname.lastIndexOf(QRegExp("[A-Z]"));
1046 if(upperCharPos == -1)
1048 methodname = methodname.left(upperCharPos);
1051 methodname[0] = methodname[0].toUpper();
1056 QVariantMap SignalProxy::initData(SyncableObject *obj) const {
1057 return obj->toVariantMap();
1060 void SignalProxy::setInitData(SyncableObject *obj, const QVariantMap &properties) {
1061 if(obj->isInitialized())
1063 obj->fromVariantMap(properties);
1064 obj->setInitialized();
1065 emit objectInitialized(obj);
1066 invokeSlot(obj, updatedRemotelyId(obj));
1069 void SignalProxy::sendHeartBeat() {
1070 dispatchSignal(SignalProxy::HeartBeat, QVariantList() << QTime::currentTime());
1071 PeerHash::iterator peer = _peers.begin();
1072 while(peer != _peers.end()) {
1073 if((*peer)->type() == AbstractPeer::IODevicePeer) {
1074 IODevicePeer *ioPeer = static_cast<IODevicePeer *>(*peer);
1075 if(ioPeer->sentHeartBeats > 0) {
1076 updateLag(ioPeer, ioPeer->sentHeartBeats * _heartBeatTimer.interval());
1078 if(ioPeer->sentHeartBeats > 1) {
1079 //FIXME: proper disconnect.
1080 // QAbstractSocket *socket = qobject_cast<QAbstractSocket *>(peerIter.key());
1081 // qWarning() << "SignalProxy: Disconnecting peer:"
1082 // << (socket ? qPrintable(socket->peerAddress().toString()) : "local client")
1083 // << "(didn't receive a heartbeat for over" << peerIter->sentHeartBeats * _heartBeatTimer.interval() / 1000 << "seconds)";
1084 // peerIter.key()->close();
1086 ioPeer->sentHeartBeats++;
1093 void SignalProxy::receiveHeartBeat(AbstractPeer *peer, const QVariantList ¶ms) {
1094 peer->dispatchSignal(SignalProxy::HeartBeatReply, params);
1097 void SignalProxy::receiveHeartBeatReply(AbstractPeer *peer, const QVariantList ¶ms) {
1098 if(peer->type() != AbstractPeer::IODevicePeer) {
1099 qWarning() << "SignalProxy::receiveHeartBeatReply: received heart beat from a non IODevicePeer!";
1103 IODevicePeer *ioPeer = static_cast<IODevicePeer *>(peer);
1104 ioPeer->sentHeartBeats = 0;
1106 if(params.isEmpty()) {
1107 qWarning() << "SignalProxy: received heart beat reply with less params then sent from:" << ioPeer->device();
1111 QTime sendTime = params[0].value<QTime>();
1112 updateLag(ioPeer, sendTime.msecsTo(QTime::currentTime()) / 2);
1115 void SignalProxy::updateLag(IODevicePeer *peer, int lag) {
1117 if(proxyMode() == Client) {
1118 emit lagUpdated(lag);
1123 void SignalProxy::dumpProxyStats() {
1125 if(proxyMode() == Server)
1131 foreach(SignalRelay *relay, _relayHash.values())
1132 sigCount += relay->sigCount();
1135 foreach(ObjectId oid, _syncSlave.values())
1136 slaveCount += oid.count();
1139 qDebug() << " Proxy Mode:" << mode;
1140 qDebug() << "attached sending Objects:" << _relayHash.count();
1141 qDebug() << " number of Signals:" << sigCount;
1142 qDebug() << " attached Slots:" << _attachedSlots.count();
1143 qDebug() << " number of synced Slaves:" << slaveCount;
1144 qDebug() << "number of Classes cached:" << _classInfo.count();
1147 void SignalProxy::dumpSyncMap(SyncableObject *object) {
1148 const QMetaObject *meta = object->metaObject();
1149 qDebug() << "SignalProxy: SyncMap for Class" << meta->className();
1151 QHash<QByteArray, int> syncMap_ = syncMap(object);
1152 QHash<QByteArray, int>::const_iterator iter = syncMap_.constBegin();
1153 while(iter != syncMap_.constEnd()) {
1154 qDebug() << iter.key() << "-->" << iter.value() << meta->method(iter.value()).signature();
1157 // QHash<int, int> syncMap_ = syncMap(object);
1158 // QHash<int, int>::const_iterator iter = syncMap_.constBegin();
1159 // while(iter != syncMap_.constEnd()) {
1160 // qDebug() << iter.key() << meta->method(iter.key()).signature() << "-->" << iter.value() << meta->method(iter.value()).signature();