X-Git-Url: https://git.quassel-irc.org/?p=quassel.git;a=blobdiff_plain;f=src%2Fcommon%2Fsignalproxy.cpp;h=411c8dae3a2f6db7ead13637a99f2e2a11245299;hp=3238f79ce3468efb55ab7f58a760ed0181f2330f;hb=8ec76e512d20ce5d1dc76de556bb98a06b75d695;hpb=b30780406eabbcfdc313721e961ef063ab06c8d4 diff --git a/src/common/signalproxy.cpp b/src/common/signalproxy.cpp index 3238f79c..411c8dae 100644 --- a/src/common/signalproxy.cpp +++ b/src/common/signalproxy.cpp @@ -1,28 +1,25 @@ -/**************************************************************************** - ** - ** Copyright (C) Qxt Foundation. Some rights reserved. - ** - ** This file is part of the QxtNetwork module of the Qt eXTension library - ** - ** This library is free software; you can redistribute it and/or modify it - ** under the terms of th Common Public License, version 1.0, as published by - ** IBM. - ** - ** This file is provided "AS IS", without WARRANTIES OR CONDITIONS OF ANY - ** KIND, EITHER EXPRESS OR IMPLIED INCLUDING, WITHOUT LIMITATION, ANY - ** WARRANTIES OR CONDITIONS OF TITLE, NON-INFRINGEMENT, MERCHANTABILITY OR - ** FITNESS FOR A PARTICULAR PURPOSE. - ** - ** You should have received a copy of the CPL along with this file. - ** See the LICENSE file and the cpl1.0.txt file included with the source - ** distribution for more information. If you did not receive a copy of the - ** license, contact the Qxt Foundation. - ** - ** - ** - ****************************************************************************/ +/*************************************************************************** + * Copyright (C) 2005-08 by the Quassel Project * + * devel@quassel-irc.org * + * * + * This program is free software; you can redistribute it and/or modify * + * it under the terms of the GNU General Public License as published by * + * the Free Software Foundation; either version 2 of the License, or * + * (at your option) version 3. * + * * + * This program is distributed in the hope that it will be useful, * + * but WITHOUT ANY WARRANTY; without even the implied warranty of * + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * + * GNU General Public License for more details. * + * * + * You should have received a copy of the GNU General Public License * + * along with this program; if not, write to the * + * Free Software Foundation, Inc., * + * 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. * + ***************************************************************************/ #include "signalproxy.h" + #include #include #include @@ -32,57 +29,145 @@ #include #include #include +#include +#include +#include + +#include "syncableobject.h" +#include "util.h" -class ClassIntrospector: public QObject { -// This class MANUALLY implements the necessary parts of QObject. -// Do NOT add the Q_OBJECT macro. As this class isn't intended -// for direct use, it doesn't offer any sort of useful meta-object. +class SignalRelay: public QObject { + +/* Q_OBJECT is not necessary or even allowed, because we implement + qt_metacall ourselves (and don't use any other features of the meta + object system) +*/ public: - ClassIntrospector(SignalProxy* parent, QObject* source); + SignalRelay(SignalProxy* parent, QObject* source); int qt_metacall(QMetaObject::Call _c, int _id, void **_a); void attachSignal(int methodId, const QByteArray &func); + + void setSynchronize(bool); + bool synchronize() const; + + int sigCount() const; private: + bool isSyncMethod(int i); + SignalProxy* proxy; QObject* caller; - QMultiHash rpcFunction; + QMultiHash sigNames; + bool _sync; }; -ClassIntrospector::ClassIntrospector(SignalProxy* parent, QObject* source) +SignalRelay::SignalRelay(SignalProxy* parent, QObject* source) : QObject(parent), proxy(parent), - caller(source) + caller(source), + _sync(false) { QObject::connect(source, SIGNAL(destroyed()), parent, SLOT(detachSender())); } -int ClassIntrospector::qt_metacall(QMetaObject::Call _c, int _id, void **_a) { +int SignalRelay::qt_metacall(QMetaObject::Call _c, int _id, void **_a) { _id = QObject::qt_metacall(_c, _id, _a); if(_id < 0) return _id; if(_c == QMetaObject::InvokeMetaMethod) { - if(rpcFunction.contains(_id)) { + if(sigNames.contains(_id) || synchronize()) { const QList &argTypes = proxy->argTypes(caller, _id); QVariantList params; int n = argTypes.size(); - for(int i=0; imetaObject()->className()).arg(caller->metaObject()->method(_id).signature()); + qWarning() << " - make sure all your data types are known by the Qt MetaSystem"; + return _id; + } params.append(QVariant(argTypes[i], _a[i+1])); - QMultiHash::const_iterator funcIter = rpcFunction.constFind(_id); - while(funcIter != rpcFunction.constEnd() && funcIter.key() == _id) { - proxy->call(funcIter.value(), params); - funcIter++; + } + QMultiHash::const_iterator funcIter = sigNames.constFind(_id); + while(funcIter != sigNames.constEnd() && funcIter.key() == _id) { + proxy->dispatchSignal(SignalProxy::RpcCall, QVariantList() << funcIter.value() << params); + funcIter++; + } + + // dispatch Sync Signal if necessary + QByteArray signature(caller->metaObject()->method(_id).signature()); + SyncableObject *syncObject = qobject_cast(caller); + if(synchronize() && proxy->syncMap(syncObject).contains(signature)) { + //qDebug() << "__SYNC__ >>>" + // << caller->metaObject()->className() + // << caller->objectName() + // << signature + // << params; + // params.prepend(QVariant(_id)); + params.prepend(signature); + params.prepend(syncObject->objectName()); + params.prepend(syncObject->syncMetaObject()->className()); + proxy->dispatchSignal(SignalProxy::Sync, params); } } - _id -= 1; + _id -= QObject::staticMetaObject.methodCount(); } return _id; } -void ClassIntrospector::attachSignal(int methodId, const QByteArray &func) { +void SignalRelay::setSynchronize(bool sync) { + SyncableObject *syncObject = qobject_cast(caller); + if(!syncObject) + return; + + const QMetaObject *meta = syncObject->syncMetaObject(); + if(!_sync && sync) { + // enable Sync + for(int i = 0; i < meta->methodCount(); i++ ) { + if(isSyncMethod(i)) + QMetaObject::connect(caller, i, this, QObject::staticMetaObject.methodCount() + i); + } + } else if (_sync && !sync) { + // disable Sync + for(int i = 0; i < meta->methodCount(); i++ ) { + if(isSyncMethod(i)) + QMetaObject::disconnect(caller, i, this, QObject::staticMetaObject.methodCount() + i); + } + } + _sync = sync; +} + +bool SignalRelay::isSyncMethod(int i) { + SyncableObject *syncObject = qobject_cast(caller); + if(!syncObject) + return false; + + QByteArray signature = syncObject->syncMetaObject()->method(i).signature(); + if(!proxy->syncMap(syncObject).contains(signature)) + return false; + + if(proxy->proxyMode() == SignalProxy::Server && !signature.contains("Requested")) + return true; + + if(proxy->proxyMode() == SignalProxy::Client && signature.contains("Requested")) + return true; + + return false; +} + +bool SignalRelay::synchronize() const { + return _sync; +} + +int SignalRelay::sigCount() const { + // only for debuging purpose + return sigNames.count(); +} + +void SignalRelay::attachSignal(int methodId, const QByteArray &func) { // we ride without safetybelts here... all checking for valid method etc pp has to be done by the caller // all connected methodIds are offset by the standard methodCount of QObject - if(!rpcFunction.contains(methodId)) + if(!sigNames.contains(methodId)) QMetaObject::connect(caller, methodId, this, QObject::staticMetaObject.methodCount() + methodId); QByteArray fn; @@ -91,10 +176,10 @@ void ClassIntrospector::attachSignal(int methodId, const QByteArray &func) { } else { fn = QByteArray("2") + caller->metaObject()->method(methodId).signature(); } - rpcFunction.insert(methodId, fn); + sigNames.insert(methodId, fn); } // ==================== -// END INTROSPECTOR +// END SIGNALRELAY // ==================== @@ -102,57 +187,64 @@ void ClassIntrospector::attachSignal(int methodId, const QByteArray &func) { // SignalProxy // ==================== SignalProxy::SignalProxy(QObject* parent) - : QObject(parent), - _rpcType(Peer), - _maxClients(-1) + : QObject(parent) { + setProxyMode(Client); } -SignalProxy::SignalProxy(RPCTypes type, QObject* parent) - : QObject(parent), - _rpcType(type), - _maxClients(-1) +SignalProxy::SignalProxy(ProxyMode mode, QObject* parent) + : QObject(parent) { + setProxyMode(mode); } -SignalProxy::SignalProxy(RPCTypes type, QIODevice* device, QObject* parent) - : QObject(parent), - _rpcType(type), - _maxClients(-1) +SignalProxy::SignalProxy(ProxyMode mode, QIODevice* device, QObject* parent) + : QObject(parent) { + setProxyMode(mode); addPeer(device); -} +} SignalProxy::~SignalProxy() { - QList senders = _specHash.keys(); + QList senders = _relayHash.keys(); foreach(QObject* sender, senders) detachObject(sender); + + // close peer connections + foreach(QIODevice *device, _peerByteCount.keys()) { + device->close(); + delete device; + } } -void SignalProxy::setRPCType(RPCTypes type) { +void SignalProxy::setProxyMode(ProxyMode mode) { foreach(QIODevice* peer, _peerByteCount.keys()) { if(peer->isOpen()) { - qWarning() << "SignalProxy: Cannot change RPC types while connected"; + qWarning() << "SignalProxy: Cannot change proxy mode while connected"; return; } } - _rpcType = type; + _proxyMode = mode; + if(mode == Server) + initServer(); + else + initClient(); } - -SignalProxy::RPCTypes SignalProxy::rpcType() const { - return (RPCTypes)(_rpcType); +SignalProxy::ProxyMode SignalProxy::proxyMode() const { + return _proxyMode; } -bool SignalProxy::maxPeersReached() { - if(_peerByteCount.empty()) - return false; - if(rpcType() != Server) - return true; - if(_maxClients == -1) - return false; +void SignalProxy::initServer() { + disconnect(&_heartBeatTimer, 0, this, 0); + _heartBeatTimer.stop(); +} - return (_maxClients <= _peerByteCount.count()); +void SignalProxy::initClient() { + attachSlot("__objectRenamed__", this, SLOT(objectRenamed(QByteArray, QString, QString))); + connect(&_heartBeatTimer, SIGNAL(timeout()), + this, SLOT(sendHeartBeat())); + _heartBeatTimer.start(60 * 1000); // msecs: one beep per minute } bool SignalProxy::addPeer(QIODevice* iodev) { @@ -162,17 +254,17 @@ bool SignalProxy::addPeer(QIODevice* iodev) { if(_peerByteCount.contains(iodev)) return true; - if(maxPeersReached()) { - qWarning("SignalProxy: max peercount reached"); + if(proxyMode() == Client && !_peerByteCount.isEmpty()) { + qWarning("SignalProxy: only one peer allowed in client mode!"); return false; } - + if(!iodev->isOpen()) qWarning("SignalProxy::the device you passed is not open!"); - + connect(iodev, SIGNAL(disconnected()), this, SLOT(removePeerBySender())); connect(iodev, SIGNAL(readyRead()), this, SLOT(dataAvailable())); - + QAbstractSocket* sock = qobject_cast(iodev); if(sock) { connect(sock, SIGNAL(disconnected()), this, SLOT(removePeerBySender())); @@ -182,47 +274,33 @@ bool SignalProxy::addPeer(QIODevice* iodev) { if(_peerByteCount.count() == 1) emit connected(); - - return true; -} -void SignalProxy::removePeerBySender() { - // OK we're brutal here... but since it's a private slot we know what we've got connected to it... - QIODevice *ioDev = (QIODevice *)(sender()); - removePeer(ioDev); + return true; } void SignalProxy::removePeer(QIODevice* iodev) { if(_peerByteCount.isEmpty()) { - qWarning() << "No Peers in use!"; + qWarning() << "SignalProxy::removePeer(): No peers in use!"; return; } - - if(_rpcType == Server && !iodev) { + + if(proxyMode() == Server && !iodev) { // disconnect all QList peers = _peerByteCount.keys(); foreach(QIODevice *peer, peers) removePeer(peer); } - if(_rpcType != Server && !iodev) + if(proxyMode() != Server && !iodev) iodev = _peerByteCount.keys().first(); - + Q_ASSERT(iodev); - + if(!_peerByteCount.contains(iodev)) { qWarning() << "SignalProxy: unknown QIODevice" << iodev; return; } - - // take a last gasp - while(true) { - QVariant var; - if(readDataFromDevice(iodev, _peerByteCount[iodev], var)) - receivePeerSignal(var); - else - break; - } + _peerByteCount.remove(iodev); disconnect(iodev, 0, this, 0); @@ -232,86 +310,274 @@ void SignalProxy::removePeer(QIODevice* iodev) { emit disconnected(); } +void SignalProxy::removePeerBySender() { + // OK we're brutal here... but since it's a private slot we know what we've got connected to it... + QIODevice *ioDev = (QIODevice *)(sender()); + removePeer(ioDev); + qDebug() << "Client disconnected."; +} + +void SignalProxy::objectRenamed(const QString &newname, const QString &oldname) { + SyncableObject *syncObject = qobject_cast(sender()); + const QMetaObject *meta = syncObject->metaObject(); + const QByteArray className(meta->className()); + objectRenamed(className, newname, oldname); + + if(proxyMode() == Client) + return; + + QVariantList params; + params << "__objectRenamed__" << className << newname << oldname; + dispatchSignal(RpcCall, params); +} + +void SignalProxy::objectRenamed(const QByteArray &classname, const QString &newname, const QString &oldname) { + if(_syncSlave.contains(classname) && _syncSlave[classname].contains(oldname) && oldname != newname) { + SyncableObject *obj = _syncSlave[classname][newname] = _syncSlave[classname].take(oldname); + requestInit(obj); + } +} + void SignalProxy::setArgTypes(QObject* obj, int methodId) { - QList p = obj->metaObject()->method(methodId).parameterTypes(); + const QMetaObject *meta = metaObject(obj); + QList p = meta->method(methodId).parameterTypes(); QList argTypes; int ct = p.count(); for(int i=0; imetaObject()->className()); - Q_ASSERT(_classInfo.contains(className)); - Q_ASSERT(!_classInfo[className]->argTypes.contains(methodId)); - _classInfo[className]->argTypes[methodId] = argTypes; + Q_ASSERT(!_classInfo[meta]->argTypes.contains(methodId)); + _classInfo[meta]->argTypes[methodId] = argTypes; } const QList &SignalProxy::argTypes(QObject *obj, int methodId) { - const QByteArray &className(obj->metaObject()->className()); - Q_ASSERT(_classInfo.contains(className)); - if(!_classInfo[className]->argTypes.contains(methodId)) + const QMetaObject *meta = metaObject(obj); + Q_ASSERT(_classInfo.contains(meta)); + if(!_classInfo[meta]->argTypes.contains(methodId)) setArgTypes(obj, methodId); - return _classInfo[className]->argTypes[methodId]; + return _classInfo[meta]->argTypes[methodId]; } -void SignalProxy::setMethodName(QObject *obj, int methodId) { - const QByteArray &className(obj->metaObject()->className()); - QByteArray method = obj->metaObject()->method(methodId).signature(); - method = method.left(method.indexOf('(')); +void SignalProxy::setReturnType(QObject *obj, int methodId) { + const QMetaObject *meta = metaObject(obj); + int returnType = QMetaType::type(meta->method(methodId).typeName()); + + Q_ASSERT(!_classInfo[meta]->returnType.contains(methodId)); + _classInfo[meta]->returnType[methodId] = returnType; +} + +const int &SignalProxy::returnType(QObject *obj, int methodId) { + const QMetaObject *meta = metaObject(obj); + Q_ASSERT(_classInfo.contains(meta)); + if(!_classInfo[meta]->returnType.contains(methodId)) + setReturnType(obj, methodId); + return _classInfo[meta]->returnType[methodId]; +} - Q_ASSERT(_classInfo.contains(className)); - Q_ASSERT(!_classInfo[className]->methodNames.contains(methodId)); - _classInfo[className]->methodNames[methodId] = method; +void SignalProxy::setMinArgCount(QObject *obj, int methodId) { + const QMetaObject *meta = metaObject(obj); + QString signature(meta->method(methodId).signature()); + int minCount = meta->method(methodId).parameterTypes().count() - signature.count("="); + Q_ASSERT(!_classInfo[meta]->minArgCount.contains(methodId)); + _classInfo[meta]->minArgCount[methodId] = minCount; +} + +const int &SignalProxy::minArgCount(QObject *obj, int methodId) { + const QMetaObject *meta = metaObject(obj); + Q_ASSERT(_classInfo.contains(meta)); + if(!_classInfo[meta]->minArgCount.contains(methodId)) + setMinArgCount(obj, methodId); + return _classInfo[meta]->minArgCount[methodId]; +} + +void SignalProxy::setMethodName(QObject *obj, int methodId) { + const QMetaObject *meta = metaObject(obj); + QByteArray method(::methodName(meta->method(methodId))); + Q_ASSERT(!_classInfo[meta]->methodNames.contains(methodId)); + _classInfo[meta]->methodNames[methodId] = method; } const QByteArray &SignalProxy::methodName(QObject *obj, int methodId) { - QByteArray className(obj->metaObject()->className()); - Q_ASSERT(_classInfo.contains(className)); - if(!_classInfo[className]->methodNames.contains(methodId)) + const QMetaObject *meta = metaObject(obj); + Q_ASSERT(_classInfo.contains(meta)); + if(!_classInfo[meta]->methodNames.contains(methodId)) setMethodName(obj, methodId); - return _classInfo[className]->methodNames[methodId]; + return _classInfo[meta]->methodNames[methodId]; } +void SignalProxy::setSyncMap(SyncableObject *obj) { + const QMetaObject *meta = obj->syncMetaObject(); + QHash syncMap; + + QList slotIndexes; + for(int i = 0; i < meta->methodCount(); i++) { + if(meta->method(i).methodType() == QMetaMethod::Slot) + slotIndexes << i; + } + + // we're faking sync pairs for sync replies + QByteArray slotSignature; + foreach(int slotIdx, slotIndexes) { + slotSignature = QByteArray(meta->method(slotIdx).signature()); + if(!slotSignature.startsWith("receive")) + continue; + syncMap[slotSignature] = slotIdx; + } + + QMetaMethod signal, slot; + int matchIdx; + for(int signalIdx = 0; signalIdx < meta->methodCount(); signalIdx++) { + signal = meta->method(signalIdx); + if(signal.methodType() != QMetaMethod::Signal) + continue; + + matchIdx = -1; + foreach(int slotIdx, slotIndexes) { + slot = meta->method(slotIdx); + if(methodsMatch(signal, slot)) { + matchIdx = slotIdx; + break; + } + } + if(matchIdx != -1) { + slotIndexes.removeAt(slotIndexes.indexOf(matchIdx)); + syncMap[QByteArray(signal.signature())] = matchIdx; + } + } + + Q_ASSERT(_classInfo[meta]->syncMap.isEmpty()); + _classInfo[meta]->syncMap = syncMap; +} + +const QHash &SignalProxy::syncMap(SyncableObject *obj) { + const QMetaObject *meta = obj->syncMetaObject(); + Q_ASSERT(_classInfo.contains(meta)); + if(_classInfo[meta]->syncMap.isEmpty()) + setSyncMap(obj); + return _classInfo[meta]->syncMap; +} + +void SignalProxy::setReceiveMap(SyncableObject *obj) { + const QMetaObject *meta = obj->syncMetaObject(); + Q_ASSERT(_classInfo.contains(meta)); + + QHash receiveMap; + + QMetaMethod requestSlot; + QByteArray returnTypeName; + QByteArray signature; + QByteArray methodName; + QByteArray params; + int paramsPos; + int receiverId; + const int methodCount = meta->methodCount(); + for(int i = 0; i < methodCount; i++) { + requestSlot = meta->method(i); + if(requestSlot.methodType() != QMetaMethod::Slot) + continue; + + returnTypeName = requestSlot.typeName(); + if(QMetaType::Void == (QMetaType::Type)returnType(obj, i)) + continue; + + signature = QByteArray(requestSlot.signature()); + if(!signature.startsWith("request")) + continue; + + paramsPos = signature.indexOf('('); + if(paramsPos == -1) + continue; + + methodName = signature.left(paramsPos); + params = signature.mid(paramsPos); + + methodName = methodName.replace("request", "receive"); + params = params.left(params.count() - 1) + ", " + returnTypeName + ")"; + + signature = QMetaObject::normalizedSignature(methodName + params); + receiverId = meta->indexOfSlot(signature); + + if(receiverId == -1) { + signature = QMetaObject::normalizedSignature(methodName + "(" + returnTypeName + ")"); + receiverId = meta->indexOfSlot(signature); + } + + if(receiverId != -1) + receiveMap[i] = receiverId; + } + _classInfo[meta]->receiveMap = receiveMap; +} + +const QHash &SignalProxy::receiveMap(SyncableObject *obj) { + const QMetaObject *meta = obj->syncMetaObject(); + Q_ASSERT(_classInfo.contains(meta)); + if(_classInfo[meta]->receiveMap.isEmpty()) + setReceiveMap(obj); + return _classInfo[meta]->receiveMap; +} + +void SignalProxy::setUpdatedRemotelyId(SyncableObject *obj) { + const QMetaObject *meta = obj->syncMetaObject(); + Q_ASSERT(_classInfo.contains(meta)); + _classInfo[meta]->updatedRemotelyId = meta->indexOfSignal("updatedRemotely()"); +} + +int SignalProxy::updatedRemotelyId(SyncableObject *obj) { + Q_ASSERT(_classInfo.contains(obj->syncMetaObject())); + return _classInfo[obj->syncMetaObject()]->updatedRemotelyId; +} + +const QMetaObject *SignalProxy::metaObject(QObject *obj) { + if(SyncableObject *syncObject = qobject_cast(obj)) + return syncObject->syncMetaObject(); + else + return obj->metaObject(); +} + void SignalProxy::createClassInfo(QObject *obj) { - QByteArray className(obj->metaObject()->className()); - if(!_classInfo.contains(className)) - _classInfo[className] = new ClassInfo(); + const QMetaObject *meta = metaObject(obj); + if(_classInfo.contains(meta)) + return; + + ClassInfo *classInfo = new ClassInfo(); + _classInfo[meta] = classInfo; } -bool SignalProxy::attachSignal(QObject* sender, const char* signal, const QByteArray& rpcFunction) { - const QMetaObject* meta = sender->metaObject(); +bool SignalProxy::attachSignal(QObject* sender, const char* signal, const QByteArray& sigName) { + const QMetaObject* meta = metaObject(sender); QByteArray sig(meta->normalizedSignature(signal).mid(1)); int methodId = meta->indexOfMethod(sig.constData()); if(methodId == -1 || meta->method(methodId).methodType() != QMetaMethod::Signal) { - qWarning() << "SignalProxy::attachSignal: No such signal " << signal; + qWarning() << "SignalProxy::attachSignal(): No such signal" << signal; return false; } createClassInfo(sender); - ClassIntrospector* spec; - if(_specHash.contains(sender)) - spec = _specHash[sender]; + SignalRelay* relay; + if(_relayHash.contains(sender)) + relay = _relayHash[sender]; else - spec = _specHash[sender] = new ClassIntrospector(this, sender); + relay = _relayHash[sender] = new SignalRelay(this, sender); - spec->attachSignal(methodId, rpcFunction); + relay->attachSignal(methodId, sigName); return true; } -bool SignalProxy::attachSlot(const QByteArray& rpcFunction, QObject* recv, const char* slot) { +bool SignalProxy::attachSlot(const QByteArray& sigName, QObject* recv, const char* slot) { const QMetaObject* meta = recv->metaObject(); int methodId = meta->indexOfMethod(meta->normalizedSignature(slot).mid(1)); if(methodId == -1 || meta->method(methodId).methodType() == QMetaMethod::Method) { - qWarning() << "SignalProxy::attachSlot: No such slot " << slot; + qWarning() << "SignalProxy::attachSlot(): No such slot" << slot; return false; } createClassInfo(recv); - - QByteArray funcName = QMetaObject::normalizedSignature(rpcFunction.constData()); + + QByteArray funcName = QMetaObject::normalizedSignature(sigName.constData()); _attachedSlots.insert(funcName, qMakePair(recv, methodId)); QObject::disconnect(recv, SIGNAL(destroyed()), this, SLOT(detachSender())); @@ -319,40 +585,67 @@ bool SignalProxy::attachSlot(const QByteArray& rpcFunction, QObject* recv, const return true; } +void SignalProxy::synchronize(SyncableObject *obj) { + createClassInfo(obj); + setUpdatedRemotelyId(obj); + + // attaching all the Signals + SignalRelay* relay; + if(_relayHash.contains(obj)) + relay = _relayHash[obj]; + else + relay = _relayHash[obj] = new SignalRelay(this, obj); + + relay->setSynchronize(true); + + // attaching as slave to receive sync Calls + QByteArray className(obj->syncMetaObject()->className()); + _syncSlave[className][obj->objectName()] = obj; + + if(proxyMode() == Server) { + connect(obj, SIGNAL(objectRenamed(QString, QString)), this, SLOT(objectRenamed(QString, QString))); + setInitialized(obj); + } else { + requestInit(obj); + } +} + +void SignalProxy::setInitialized(SyncableObject *obj) { + obj->setInitialized(); + emit objectInitialized(obj); +} + +bool SignalProxy::isInitialized(SyncableObject *obj) const { + return obj->isInitialized(); +} + +void SignalProxy::requestInit(SyncableObject *obj) { + if(proxyMode() == Server || isInitialized(obj)) + return; + + QVariantList params; + params << obj->syncMetaObject()->className() + << obj->objectName(); + dispatchSignal(InitRequest, params); +} void SignalProxy::detachSender() { - // this is a slot so we can bypass the QueuedConnection - _detachSignals(sender()); - _detachSlots(sender()); + detachObject(sender()); } -// detachObject/Signals/Slots() can be called as a result of an incomming call -// this might destroy our the iterator used for delivery -// thus we wrap the actual disconnection by using QueuedConnections void SignalProxy::detachObject(QObject* obj) { detachSignals(obj); detachSlots(obj); + stopSync(static_cast(obj)); } void SignalProxy::detachSignals(QObject* sender) { - QMetaObject::invokeMethod(this, "_detachSignals", - Qt::QueuedConnection, - Q_ARG(QObject*, sender)); -} - -void SignalProxy::_detachSignals(QObject* sender) { - if(!_specHash.contains(sender)) + if(!_relayHash.contains(sender)) return; - _specHash.take(sender)->deleteLater(); + _relayHash.take(sender)->deleteLater(); } void SignalProxy::detachSlots(QObject* receiver) { - QMetaObject::invokeMethod(this, "_detachSlots", - Qt::QueuedConnection, - Q_ARG(QObject*, receiver)); -} - -void SignalProxy::_detachSlots(QObject* receiver) { SlotHash::iterator slotIter = _attachedSlots.begin(); while(slotIter != _attachedSlots.end()) { if(slotIter.value().first == receiver) { @@ -362,62 +655,253 @@ void SignalProxy::_detachSlots(QObject* receiver) { } } +void SignalProxy::stopSync(SyncableObject* obj) { + if(_relayHash.contains(obj)) + _relayHash[obj]->setSynchronize(false); -void SignalProxy::call(const char* signal , QVariant p1, QVariant p2, QVariant p3, QVariant p4, QVariant p5, QVariant p6, QVariant p7, QVariant p8, QVariant p9) { - QByteArray sig=QMetaObject::normalizedSignature(signal); - QVariantList params; - params << p1 << p2 << p3 << p4 << p5 - << p6 << p7 << p8 << p9; - call(sig, params); + // we can't use a className here, since it might be effed up, if we receive the call as a result of a decon + // gladly the objectName() is still valid. So we have only to iterate over the classes not each instance! *sigh* + QHash::iterator classIter = _syncSlave.begin(); + while(classIter != _syncSlave.end()) { + if(classIter->contains(obj->objectName()) && classIter.value()[obj->objectName()] == obj) { + classIter->remove(obj->objectName()); + break; + } + classIter++; + } +} + +void SignalProxy::dispatchSignal(QIODevice *receiver, const RequestType &requestType, const QVariantList ¶ms) { + QVariantList packedFunc; + packedFunc << (qint16)requestType; + packedFunc << params; + writeDataToDevice(receiver, QVariant(packedFunc)); } -void SignalProxy::call(const QByteArray &funcName, const QVariantList ¶ms) { +void SignalProxy::dispatchSignal(const RequestType &requestType, const QVariantList ¶ms) { + // yes I know we have a little code duplication here... it's for the sake of performance QVariantList packedFunc; - packedFunc << funcName; + packedFunc << (qint16)requestType; packedFunc << params; foreach(QIODevice* dev, _peerByteCount.keys()) writeDataToDevice(dev, QVariant(packedFunc)); } -void SignalProxy::receivePeerSignal(const QVariant &packedFunc) { +void SignalProxy::receivePeerSignal(QIODevice *sender, const QVariant &packedFunc) { QVariantList params(packedFunc.toList()); - QByteArray funcName = params.takeFirst().toByteArray(); - int numParams, methodId; - QObject* receiver; + if(params.isEmpty()) { + qWarning() << "SignalProxy::receivePeerSignal(): received incompatible Data:" << packedFunc; + return; + } + + int callType = params.takeFirst().value(); + + switch(callType) { + case RpcCall: + if(params.empty()) { + qWarning() << "SignalProxy::receivePeerSignal(): received empty RPC-Call"; + return; + } else { + return handleSignal(params.takeFirst().toByteArray(), params); + } + case Sync: + return handleSync(sender, params); + case InitRequest: + return handleInitRequest(sender, params); + case InitData: + return handleInitData(sender, params); + case HeartBeat: + return; + default: + qWarning() << "SignalProxy::receivePeerSignal(): received undefined CallType" << callType << params; + return; + } +} + +void SignalProxy::handleSync(QIODevice *sender, QVariantList params) { + if(params.count() < 3) { + qWarning() << "received invalid Sync call" << params; + return; + } + + QByteArray className = params.takeFirst().toByteArray(); + QString objectName = params.takeFirst().toString(); + QByteArray signal = params.takeFirst().toByteArray(); + + if(!_syncSlave.contains(className) || !_syncSlave[className].contains(objectName)) { + qWarning() << QString("no registered receiver for sync call: %1::%2 (objectName=\"%3\"). Params are:").arg(QString(className)).arg(QString(signal)).arg(objectName) + << params; + return; + } + + SyncableObject *receiver = _syncSlave[className][objectName]; + if(!syncMap(receiver).contains(signal)) { + qWarning() << QString("no matching slot for sync call: %1::%2 (objectName=\"%3\"). Params are:").arg(QString(className)).arg(QString(signal)).arg(objectName) + << params; + return; + } + + int slotId = syncMap(receiver)[signal]; + + QVariant returnValue((QVariant::Type)returnType(receiver, slotId)); + if(!invokeSlot(receiver, slotId, params, returnValue)) { + qWarning("SignalProxy::handleSync(): invokeMethod for \"%s\" failed ", methodName(receiver, slotId).constData()); + return; + } + + if(returnValue.type() != QVariant::Invalid && receiveMap(receiver).contains(slotId)) { + int receiverId = receiveMap(receiver)[slotId]; + QVariantList returnParams; + returnParams << className + << objectName + << QByteArray(receiver->metaObject()->method(receiverId).signature()); + if(argTypes(receiver, receiverId).count() > 1) + returnParams << params; + returnParams << returnValue; + dispatchSignal(sender, Sync, returnParams); + } + + // send emit update signal + invokeSlot(receiver, updatedRemotelyId(receiver)); +} + +void SignalProxy::handleInitRequest(QIODevice *sender, const QVariantList ¶ms) { + if(params.count() != 2) { + qWarning() << "SignalProxy::handleInitRequest() received initRequest with invalid param Count:" + << params; + return; + } + + QByteArray className(params[0].toByteArray()); + QString objectName(params[1].toString()); + + if(!_syncSlave.contains(className)) { + qWarning() << "SignalProxy::handleInitRequest() received initRequest for unregistered Class:" + << className; + return; + } + + if(!_syncSlave[className].contains(objectName)) { + qWarning() << "SignalProxy::handleInitRequest() received initRequest for unregistered Object:" + << className << objectName; + return; + } + + SyncableObject *obj = _syncSlave[className][objectName]; + + QVariantList params_; + params_ << className + << objectName + << initData(obj); + + dispatchSignal(sender, InitData, params_); +} + +void SignalProxy::handleInitData(QIODevice *sender, const QVariantList ¶ms) { + Q_UNUSED(sender) + if(params.count() != 3) { + qWarning() << "SignalProxy::handleInitData() received initData with invalid param Count:" + << params; + return; + } + + QByteArray className(params[0].toByteArray()); + QString objectName(params[1].toString()); + QVariantMap propertyMap(params[2].toMap()); + + if(!_syncSlave.contains(className)) { + qWarning() << "SignalProxy::handleInitData() received initData for unregistered Class:" + << className; + return; + } + + if(!_syncSlave[className].contains(objectName)) { + qWarning() << "SignalProxy::handleInitData() received initData for unregistered Object:" + << className << objectName; + return; + } + + SyncableObject *obj = _syncSlave[className][objectName]; + setInitData(obj, propertyMap); +} + +void SignalProxy::handleSignal(const QByteArray &funcName, const QVariantList ¶ms) { + QObject* receiver; + int methodId; SlotHash::const_iterator slot = _attachedSlots.constFind(funcName); while(slot != _attachedSlots.constEnd() && slot.key() == funcName) { receiver = (*slot).first; methodId = (*slot).second; - numParams = argTypes(receiver, methodId).count(); - QGenericArgument args[9]; - for(int i = 0; i < numParams; i++) - args[i] = QGenericArgument(params[i].typeName(), params[i].constData()); - if(!QMetaObject::invokeMethod(receiver, methodName(receiver, methodId), - args[0], args[1], args[2], args[3], args[4], args[5], args[6], args[7], args[8])) { - qWarning("SignalProxy::receivePeerSignal: invokeMethod for \"%s\" failed ", methodName(receiver, methodId).constData()); - } + if(!invokeSlot(receiver, methodId, params)) + qWarning("SignalProxy::handleSignal(): invokeMethod for \"%s\" failed ", methodName(receiver, methodId).constData()); slot++; } } -void SignalProxy::dataAvailable() { - QIODevice* ioDev = qobject_cast(sender()); - Q_ASSERT(ioDev); - if(!_peerByteCount.contains(ioDev)) { - qWarning() << "SignalProxy: Unrecognized client object connected to dataAvailable"; - return; +bool SignalProxy::invokeSlot(QObject *receiver, int methodId, const QVariantList ¶ms, QVariant &returnValue) { + const QList args = argTypes(receiver, methodId); + const int numArgs = params.count() < args.count() + ? params.count() + : args.count(); + + if(minArgCount(receiver, methodId) > params.count()) { + qWarning() << "SignalProxy::invokeSlot(): not enough params to invoke" << methodName(receiver, methodId); + return false; + } + + void *_a[] = {0, // return type... + 0, 0, 0, 0 , 0, // and 10 args - that's the max size qt can handle with signals and slots + 0, 0, 0, 0 , 0}; + + // check for argument compatibility and build params array + for(int i = 0; i < numArgs; i++) { + if(!params[i].isValid()) { + 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()); + qWarning() << " - make sure all your data types are known by the Qt MetaSystem"; + return false; + } + if(args[i] != QMetaType::type(params[i].typeName())) { + qWarning() << "SignalProxy::invokeSlot(): incompatible param types to invoke" << methodName(receiver, methodId); + return false; + } + _a[i+1] = const_cast(params[i].constData()); + } + + if(returnValue.type() != QVariant::Invalid) + _a[0] = const_cast(returnValue.constData()); + + Qt::ConnectionType type = QThread::currentThread() == receiver->thread() + ? Qt::DirectConnection + : Qt::QueuedConnection; + + if (type == Qt::DirectConnection) { + return receiver->qt_metacall(QMetaObject::InvokeMetaMethod, methodId, _a) < 0; } else { - QVariant var; - while(readDataFromDevice(ioDev, _peerByteCount[ioDev], var)) - receivePeerSignal(var); + qWarning() << "Queued Connections are not implemented yet"; + // note to self: qmetaobject.cpp:990 ff + return false; } + +} + +bool SignalProxy::invokeSlot(QObject *receiver, int methodId, const QVariantList ¶ms) { + QVariant ret; + return invokeSlot(receiver, methodId, params, ret); +} + +void SignalProxy::dataAvailable() { + // yet again. it's a private slot. no need for checks. + QIODevice* ioDev = qobject_cast(sender()); + QVariant var; + while(readDataFromDevice(ioDev, _peerByteCount[ioDev], var)) + receivePeerSignal(ioDev, var); } void SignalProxy::writeDataToDevice(QIODevice *dev, const QVariant &item) { QAbstractSocket* sock = qobject_cast(dev); if(!dev->isOpen() || (sock && sock->state()!=QAbstractSocket::ConnectedState)) { - qWarning("can't call on a closed device"); + qWarning("SignalProxy: Can't call on a closed device"); return; } QByteArray block; @@ -445,4 +929,95 @@ bool SignalProxy::readDataFromDevice(QIODevice *dev, quint32 &blockSize, QVarian return true; } +bool SignalProxy::methodsMatch(const QMetaMethod &signal, const QMetaMethod &slot) const { + // if we don't even have the same basename it's a sure NO + if(methodBaseName(signal) != methodBaseName(slot)) + return false; + + // are the signatures compatible? + if(!QObject::staticMetaObject.checkConnectArgs(signal.signature(), slot.signature())) + return false; + + // we take an educated guess if the signals and slots match + QString signalsuffix = ::methodName(signal).mid(QString(::methodName(signal)).lastIndexOf(QRegExp("[A-Z]"))).toLower(); + QString slotprefix = ::methodName(slot).left(QString(::methodName(slot)).indexOf(QRegExp("[A-Z]"))).toLower(); + + uint sizediff = qAbs(slotprefix.size() - signalsuffix.size()); + int ratio = editingDistance(slotprefix, signalsuffix) - sizediff; + return (ratio < 2); +} + +QString SignalProxy::methodBaseName(const QMetaMethod &method) { + QString methodname = QString(method.signature()).section("(", 0, 0); + + // determine where we have to chop: + if(method.methodType() == QMetaMethod::Slot) { + // we take evertyhing from the first uppercase char if it's slot + methodname = methodname.mid(methodname.indexOf(QRegExp("[A-Z]"))); + } else { + // and if it's a signal we discard everything from the last uppercase char + methodname = methodname.left(methodname.lastIndexOf(QRegExp("[A-Z]"))); + } + + methodname[0] = methodname[0].toUpper(); + + return methodname; +} +QVariantMap SignalProxy::initData(SyncableObject *obj) const { + return obj->toVariantMap(); +} + +void SignalProxy::setInitData(SyncableObject *obj, const QVariantMap &properties) { + if(isInitialized(obj)) + return; + obj->fromVariantMap(properties); + setInitialized(obj); + invokeSlot(obj, updatedRemotelyId(obj)); +} + +void SignalProxy::sendHeartBeat() { + dispatchSignal(SignalProxy::HeartBeat, QVariantList()); +} + +void SignalProxy::dumpProxyStats() { + QString mode; + if(proxyMode() == Server) + mode = "Server"; + else + mode = "Client"; + + int sigCount = 0; + foreach(SignalRelay *relay, _relayHash.values()) + sigCount += relay->sigCount(); + + int slaveCount = 0; + foreach(ObjectId oid, _syncSlave.values()) + slaveCount += oid.count(); + + qDebug() << this; + qDebug() << " Proxy Mode:" << mode; + qDebug() << "attached sending Objects:" << _relayHash.count(); + qDebug() << " number of Signals:" << sigCount; + qDebug() << " attached Slots:" << _attachedSlots.count(); + qDebug() << " number of synced Slaves:" << slaveCount; + qDebug() << "number of Classes cached:" << _classInfo.count(); +} + +void SignalProxy::dumpSyncMap(SyncableObject *object) { + const QMetaObject *meta = object->metaObject(); + qDebug() << "SignalProxy: SyncMap for Class" << meta->className(); + + QHash syncMap_ = syncMap(object); + QHash::const_iterator iter = syncMap_.constBegin(); + while(iter != syncMap_.constEnd()) { + qDebug() << iter.key() << "-->" << iter.value() << meta->method(iter.value()).signature(); + iter++; + } +// QHash syncMap_ = syncMap(object); +// QHash::const_iterator iter = syncMap_.constBegin(); +// while(iter != syncMap_.constEnd()) { +// qDebug() << iter.key() << meta->method(iter.key()).signature() << "-->" << iter.value() << meta->method(iter.value()).signature(); +// iter++; +// } +}