/***************************************************************************
- * Copyright (C) 2005-07 by The Quassel IRC Development Team *
+ * 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) any later version. *
+ * (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 *
#include "signalproxy.h"
-#include <QxtRPCPeer>
+#include <QObject>
+#include <QIODevice>
+#include <QAbstractSocket>
+#include <QHostAddress>
+#include <QHash>
+#include <QMultiHash>
+#include <QList>
+#include <QSet>
+#include <QDebug>
+#include <QMetaMethod>
+#include <QMetaProperty>
+#include <QRegExp>
+#include <QThread>
+#include <QTime>
-SignalProxy::SignalProxy(ProxyType _type, QIODevice *dev, QObject *parent) : QObject(parent), type(_type) {
- if(dev) {
- if(type != Client) {
- qWarning() << tr("Device given for ProxyType == Server, ignoring...").toAscii();
- } else {
- addPeer(dev);
+#include "syncableobject.h"
+#include "util.h"
+
+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:
+ 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<int, QByteArray> sigNames;
+ bool _sync;
+};
+
+SignalRelay::SignalRelay(SignalProxy* parent, QObject* source)
+ : QObject(parent),
+ proxy(parent),
+ caller(source),
+ _sync(false)
+{
+ QObject::connect(source, SIGNAL(destroyed()), parent, SLOT(detachSender()));
+}
+
+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(sigNames.contains(_id) || synchronize()) {
+ const QList<int> &argTypes = proxy->argTypes(caller, _id);
+ QVariantList params;
+ int n = argTypes.size();
+ for(int i=0; i<n; i++) {
+ if(argTypes[i] == 0) {
+ 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());
+ qWarning() << " - make sure all your data types are known by the Qt MetaSystem";
+ return _id;
+ }
+ params.append(QVariant(argTypes[i], _a[i+1]));
+ }
+ QMultiHash<int, QByteArray>::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<SyncableObject *>(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 -= QObject::staticMetaObject.methodCount();
+ }
+ return _id;
+}
+
+void SignalRelay::setSynchronize(bool sync) {
+ SyncableObject *syncObject = qobject_cast<SyncableObject *>(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<SyncableObject *>(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(!sigNames.contains(methodId))
+ QMetaObject::connect(caller, methodId, this, QObject::staticMetaObject.methodCount() + methodId);
+
+ QByteArray fn;
+ if(!func.isEmpty()) {
+ fn = QMetaObject::normalizedSignature(func);
+ } else {
+ fn = QByteArray("2") + caller->metaObject()->method(methodId).signature();
}
+ sigNames.insert(methodId, fn);
}
+// ====================
+// /SIGNALRELAY
+// ====================
+
+
+// ====================
+// SignalProxy
+// ====================
+SignalProxy::SignalProxy(QObject* parent)
+ : QObject(parent)
+{
+ setProxyMode(Client);
+ init();
+}
+
+SignalProxy::SignalProxy(ProxyMode mode, QObject* parent)
+ : QObject(parent)
+{
+ setProxyMode(mode);
+ init();
+}
+
+SignalProxy::SignalProxy(ProxyMode mode, QIODevice* device, QObject* parent)
+ : QObject(parent)
+{
+ setProxyMode(mode);
+ addPeer(device);
+ init();
+}
SignalProxy::~SignalProxy() {
- //qDebug() << "peers:" << peers.count();
- foreach(Connection conn, peers) {
- conn.peer->deleteLater(); conn.device->deleteLater();
+ QList<QObject*> senders = _relayHash.keys();
+ foreach(QObject* sender, senders)
+ detachObject(sender);
+
+ // close peer connections
+ foreach(QIODevice *device, _peers.keys()) {
+ device->close();
+ delete device;
}
}
-void SignalProxy::addPeer(QIODevice *dev) {
- if(type == Client && peers.count()) {
- qWarning() << tr("Cannot add more than one peer to a SignalProxy in client mode!").toAscii();
+void SignalProxy::setProxyMode(ProxyMode mode) {
+ foreach(QIODevice* peer, _peers.keys()) {
+ if(peer->isOpen()) {
+ qWarning() << "SignalProxy: Cannot change proxy mode while connected";
+ return;
+ }
+ }
+ _proxyMode = mode;
+ if(mode == Server)
+ initServer();
+ else
+ initClient();
+}
+
+void SignalProxy::init() {
+ connect(&_heartBeatTimer, SIGNAL(timeout()), this, SLOT(sendHeartBeat()));
+ _heartBeatTimer.start(30 * 1000);
+}
+
+void SignalProxy::initServer() {
+}
+
+void SignalProxy::initClient() {
+ attachSlot("__objectRenamed__", this, SLOT(objectRenamed(QByteArray, QString, QString)));
+}
+
+bool SignalProxy::addPeer(QIODevice* iodev) {
+ if(!iodev)
+ return false;
+
+ if(_peers.contains(iodev))
+ return true;
+
+ if(proxyMode() == Client && !_peers.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<QAbstractSocket*>(iodev);
+ if(sock) {
+ connect(sock, SIGNAL(disconnected()), this, SLOT(removePeerBySender()));
+ }
+
+ _peers[iodev] = peerInfo();
+ if(iodev->property("UseCompression").toBool())
+ _peers[iodev].usesCompression = true;
+
+ if(_peers.count() == 1)
+ emit connected();
+
+ return true;
+}
+
+void SignalProxy::removePeer(QIODevice* iodev) {
+ if(_peers.isEmpty()) {
+ qWarning() << "SignalProxy::removePeer(): No peers in use!";
+ return;
+ }
+
+ if(proxyMode() == Server && !iodev) {
+ // disconnect all
+ QList<QIODevice *> peers = _peers.keys();
+ foreach(QIODevice *peer, peers)
+ removePeer(peer);
+ }
+
+ if(proxyMode() != Server && !iodev)
+ iodev = _peers.keys().first();
+
+ Q_ASSERT(iodev);
+
+ if(!_peers.contains(iodev)) {
+ qWarning() << "SignalProxy: unknown QIODevice" << iodev;
+ return;
+ }
+
+ _peers.remove(iodev);
+
+ disconnect(iodev, 0, this, 0);
+ emit peerRemoved(iodev);
+
+ if(_peers.isEmpty())
+ 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...
+ // this Slot is not triggered by destroyed, so the object is still alive and can be used!
+ QIODevice *ioDev = (QIODevice *)(sender());
+ removePeer(ioDev);
+}
+
+void SignalProxy::objectRenamed(const QString &newname, const QString &oldname) {
+ SyncableObject *syncObject = qobject_cast<SyncableObject *>(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) {
+ const QMetaObject *meta = metaObject(obj);
+ QList<QByteArray> p = meta->method(methodId).parameterTypes();
+ QList<int> argTypes;
+ int ct = p.count();
+ for(int i=0; i<ct; i++)
+ argTypes.append(QMetaType::type(p.value(i)));
+
+ Q_ASSERT(!_classInfo[meta]->argTypes.contains(methodId));
+ _classInfo[meta]->argTypes[methodId] = argTypes;
+}
+
+const QList<int> &SignalProxy::argTypes(QObject *obj, int methodId) {
+ const QMetaObject *meta = metaObject(obj);
+ Q_ASSERT(_classInfo.contains(meta));
+ if(!_classInfo[meta]->argTypes.contains(methodId))
+ setArgTypes(obj, methodId);
+ return _classInfo[meta]->argTypes[methodId];
+}
+
+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];
+}
+
+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) {
+ const QMetaObject *meta = metaObject(obj);
+ Q_ASSERT(_classInfo.contains(meta));
+ if(!_classInfo[meta]->methodNames.contains(methodId))
+ setMethodName(obj, methodId);
+ return _classInfo[meta]->methodNames[methodId];
+}
+
+
+void SignalProxy::setSyncMap(SyncableObject *obj) {
+ const QMetaObject *meta = obj->syncMetaObject();
+ QHash<QByteArray, int> syncMap;
+
+ QList<int> slotIndexes;
+ for(int i = 0; i < meta->methodCount(); i++) {
+ if(meta->method(i).methodType() == QMetaMethod::Slot)
+ slotIndexes << i;
}
- Connection conn;
- conn.device = dev;
- conn.peer = new QxtRPCPeer(dev, QxtRPCPeer::Peer, this);
- connect(conn.peer, SIGNAL(peerDisconnected()), this, SLOT(socketDisconnected()));
- foreach(SlotDesc slot, attachedSlots) {
- conn.peer->attachSlot(slot.rpcFunction, slot.recv, slot.slot);
+ // 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;
}
- foreach(SignalDesc sig, attachedSignals) {
- conn.peer->attachSignal(sig.sender, sig.signal, sig.rpcFunction);
+
+ 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;
+ }
}
- peers.append(conn);
+ Q_ASSERT(_classInfo[meta]->syncMap.isEmpty());
+ _classInfo[meta]->syncMap = syncMap;
+}
+
+const QHash<QByteArray,int> &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::socketDisconnected() {
- for(int i = 0; i < peers.count(); i++) {
- Connection conn = peers[i];
- QAbstractSocket *sock = qobject_cast<QAbstractSocket*>(conn.device);
- if(!sock) continue;
- if(sock->state() == QAbstractSocket::UnconnectedState) {
- peers[i].peer->deleteLater(); peers[i].device->deleteLater();
- peers.removeAt(i);
- emit peerDisconnected();
- i--;
+void SignalProxy::setReceiveMap(SyncableObject *obj) {
+ const QMetaObject *meta = obj->syncMetaObject();
+ Q_ASSERT(_classInfo.contains(meta));
+
+ QHash<int, int> 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<int, int> &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()");
}
-void SignalProxy::attachSignal(QObject* sender, const char* signal, const QByteArray& rpcFunction) {
- disconnect(sender, SIGNAL(destroyed(QObject *)), this, SLOT(detachObject(QObject *)));
- connect(sender, SIGNAL(destroyed(QObject *)), this, SLOT(detachObject(QObject *)));
+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<SyncableObject *>(obj))
+ return syncObject->syncMetaObject();
+ else
+ return obj->metaObject();
+}
+
+void SignalProxy::createClassInfo(QObject *obj) {
+ const QMetaObject *meta = metaObject(obj);
+ if(_classInfo.contains(meta))
+ return;
- foreach(Connection conn, peers) {
- conn.peer->attachSignal(sender, signal, rpcFunction);
+ ClassInfo *classInfo = new ClassInfo();
+ _classInfo[meta] = classInfo;
+}
+
+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;
+ return false;
}
- attachedSignals.append(SignalDesc(sender, signal, rpcFunction));
+
+ createClassInfo(sender);
+
+ SignalRelay* relay;
+ if(_relayHash.contains(sender))
+ relay = _relayHash[sender];
+ else
+ relay = _relayHash[sender] = new SignalRelay(this, sender);
+
+ relay->attachSignal(methodId, sigName);
+
+ return true;
}
-void SignalProxy::attachSlot(const QByteArray& rpcFunction, QObject* recv, const char* slot) {
- disconnect(recv, SIGNAL(destroyed(QObject *)), this, SLOT(detachObject(QObject *)));
- connect(recv, SIGNAL(destroyed(QObject *)), this, SLOT(detachObject(QObject *)));
- foreach(Connection conn, peers) {
- conn.peer->attachSlot(rpcFunction, recv, 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;
+ return false;
}
- attachedSlots.append(SlotDesc(rpcFunction, recv, slot));
+
+ createClassInfo(recv);
+
+ QByteArray funcName = QMetaObject::normalizedSignature(sigName.constData());
+ _attachedSlots.insert(funcName, qMakePair(recv, methodId));
+
+ QObject::disconnect(recv, SIGNAL(destroyed()), this, SLOT(detachSender()));
+ QObject::connect(recv, SIGNAL(destroyed()), this, SLOT(detachSender()));
+ 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)));
+ obj->setInitialized();
+ emit objectInitialized(obj);
+ } else {
+ if(obj->isInitialized())
+ emit objectInitialized(obj);
+ else
+ requestInit(obj);
+ }
+}
+
+void SignalProxy::requestInit(SyncableObject *obj) {
+ if(proxyMode() == Server || obj->isInitialized())
+ return;
+
+ QVariantList params;
+ params << obj->syncMetaObject()->className()
+ << obj->objectName();
+ dispatchSignal(InitRequest, params);
+}
+
+void SignalProxy::detachSender() {
+ detachObject(sender());
}
void SignalProxy::detachObject(QObject* obj) {
- //Q_ASSERT(false); // not done yet
- foreach(Connection conn, peers) {
- conn.peer->detachObject(obj);
+ detachSignals(obj);
+ detachSlots(obj);
+ stopSync(static_cast<SyncableObject *>(obj));
+}
+
+void SignalProxy::detachSignals(QObject* sender) {
+ if(!_relayHash.contains(sender))
+ return;
+ _relayHash.take(sender)->deleteLater();
+}
+
+void SignalProxy::detachSlots(QObject* receiver) {
+ SlotHash::iterator slotIter = _attachedSlots.begin();
+ while(slotIter != _attachedSlots.end()) {
+ if(slotIter.value().first == receiver) {
+ slotIter = _attachedSlots.erase(slotIter);
+ } else
+ slotIter++;
+ }
+}
+
+void SignalProxy::stopSync(SyncableObject* obj) {
+ if(_relayHash.contains(obj))
+ _relayHash[obj]->setSynchronize(false);
+
+ // 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<QByteArray, ObjectId>::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) {
+ Q_ASSERT(_peers.contains(receiver));
+ QVariantList packedFunc;
+ packedFunc << (qint16)requestType;
+ packedFunc << params;
+ writeDataToDevice(receiver, QVariant(packedFunc), _peers[receiver].usesCompression);
+}
+
+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 << (qint16)requestType;
+ packedFunc << params;
+ foreach(QIODevice* dev, _peers.keys()) {
+ Q_ASSERT(_peers.contains(dev));
+ writeDataToDevice(dev, QVariant(packedFunc), _peers[dev].usesCompression);
+ }
+}
+
+void SignalProxy::receivePeerSignal(QIODevice *sender, const QVariant &packedFunc) {
+ QVariantList params(packedFunc.toList());
+
+ if(params.isEmpty()) {
+ qWarning() << "SignalProxy::receivePeerSignal(): received incompatible Data:" << packedFunc;
+ return;
+ }
+
+ int callType = params.takeFirst().value<int>();
+
+ switch(callType) {
+ case RpcCall:
+ if(params.empty())
+ qWarning() << "SignalProxy::receivePeerSignal(): received empty RPC-Call";
+ else
+ handleSignal(params.takeFirst().toByteArray(), params);
+ break;
+
+ case Sync:
+ handleSync(sender, params);
+ break;
+
+ case InitRequest:
+ handleInitRequest(sender, params);
+ break;
+
+ case InitData:
+ handleInitData(sender, params);
+ break;
+
+ case HeartBeat:
+ receiveHeartBeat(sender, params);
+ break;
+
+ case HeartBeatReply:
+ receiveHeartBeatReply(sender, params);
+ break;
+
+ default:
+ qWarning() << "SignalProxy::receivePeerSignal(): received undefined CallType" << callType << params;
+ }
+}
+
+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;
+ if(!invokeSlot(receiver, methodId, params))
+ qWarning("SignalProxy::handleSignal(): invokeMethod for \"%s\" failed ", methodName(receiver, methodId).constData());
+ slot++;
+ }
+}
+
+bool SignalProxy::invokeSlot(QObject *receiver, int methodId, const QVariantList ¶ms, QVariant &returnValue) {
+ const QList<int> 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<void *>(params[i].constData());
}
- QList<SignalDesc> sigs;
- foreach(SignalDesc desc, attachedSignals) {
- if(desc.sender != obj) sigs << desc;
+
+ if(returnValue.type() != QVariant::Invalid)
+ _a[0] = const_cast<void *>(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 {
+ 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<QIODevice* >(sender());
+ Q_ASSERT(_peers.contains(ioDev));
+ QVariant var;
+ while(readDataFromDevice(ioDev, _peers[ioDev].byteCount, var, _peers[ioDev].usesCompression))
+ receivePeerSignal(ioDev, var);
+}
+
+void SignalProxy::writeDataToDevice(QIODevice *dev, const QVariant &item, bool compressed) {
+ QAbstractSocket* sock = qobject_cast<QAbstractSocket*>(dev);
+ if(!dev->isOpen() || (sock && sock->state()!=QAbstractSocket::ConnectedState)) {
+ qWarning("SignalProxy: Can't call write on a closed device");
+ return;
}
- attachedSignals = sigs;
- QList<SlotDesc> slot;
- foreach(SlotDesc desc, attachedSlots) {
- if(desc.recv != obj) slot << desc;
+
+ QByteArray block;
+ QDataStream out(&block, QIODevice::WriteOnly);
+ out.setVersion(QDataStream::Qt_4_2);
+ out << (quint32)0;
+
+ if(compressed) {
+ QByteArray rawItem;
+ QDataStream itemStream(&rawItem, QIODevice::WriteOnly);
+
+ itemStream.setVersion(QDataStream::Qt_4_2);
+ itemStream << item;
+
+ rawItem = qCompress(rawItem);
+
+ out << rawItem;
+ } else {
+ out << item;
}
- attachedSlots = slot;
- // FIXME: test this!
+
+ out.device()->seek(0);
+ out << (quint32)(block.size() - sizeof(quint32));
+
+ dev->write(block);
}
-void SignalProxy::sendSignal(const char *signal, QVariant p1, QVariant p2, QVariant p3, QVariant p4, QVariant p5, QVariant p6, QVariant p7, QVariant p8, QVariant p9) {
- foreach(Connection conn, peers) {
- conn.peer->call(signal, p1, p2, p3, p4, p5, p6, p7, p8, p9);
+bool SignalProxy::readDataFromDevice(QIODevice *dev, quint32 &blockSize, QVariant &item, bool compressed) {
+ QDataStream in(dev);
+ in.setVersion(QDataStream::Qt_4_2);
+
+ if(blockSize == 0) {
+ if(dev->bytesAvailable() < (int)sizeof(quint32)) return false;
+ in >> blockSize;
+ }
+
+ if(blockSize > 1 << 22) {
+ qWarning() << qPrintable(tr("Client tried to send package larger than max package size!"));
+ QAbstractSocket *sock = qobject_cast<QAbstractSocket *>(dev);
+ qWarning() << qPrintable(tr("Disconnecting")) << (sock ? qPrintable(sock->peerAddress().toString()) : qPrintable(tr("local client")));
+ dev->close();
+ return false;
}
+
+ if(dev->bytesAvailable() < blockSize)
+ return false;
+
+ if(compressed) {
+ QByteArray rawItem;
+ in >> rawItem;
+ rawItem = qUncompress(rawItem);
+
+ QDataStream itemStream(&rawItem, QIODevice::ReadOnly);
+ itemStream.setVersion(QDataStream::Qt_4_2);
+ itemStream >> item;
+ } else {
+ in >> item;
+ }
+
+ blockSize = 0;
+
+ 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:
+ int upperCharPos;
+ if(method.methodType() == QMetaMethod::Slot) {
+ // we take evertyhing from the first uppercase char if it's slot
+ upperCharPos = methodname.indexOf(QRegExp("[A-Z]"));
+ if(upperCharPos == -1)
+ return QString();
+ methodname = methodname.mid(upperCharPos);
+ } else {
+ // and if it's a signal we discard everything from the last uppercase char
+ upperCharPos = methodname.lastIndexOf(QRegExp("[A-Z]"));
+ if(upperCharPos == -1)
+ return QString();
+ methodname = methodname.left(upperCharPos);
+ }
+
+ 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(obj->isInitialized())
+ return;
+ obj->fromVariantMap(properties);
+ obj->setInitialized();
+ emit objectInitialized(obj);
+ invokeSlot(obj, updatedRemotelyId(obj));
+}
+
+void SignalProxy::sendHeartBeat() {
+ dispatchSignal(SignalProxy::HeartBeat, QVariantList() << QTime::currentTime());
+ QHash<QIODevice *, peerInfo>::iterator peerIter = _peers.begin();
+ QHash<QIODevice *, peerInfo>::iterator peerIterEnd = _peers.end();
+ while(peerIter != peerIterEnd) {
+ if(peerIter->sentHeartBeats > 0) {
+ updateLag(peerIter.key(), _heartBeatTimer.interval());
+ }
+ if(peerIter->sentHeartBeats > 1) {
+ QAbstractSocket *socket = qobject_cast<QAbstractSocket *>(peerIter.key());
+ qWarning() << "SignalProxy: Disconnecting peer:"
+ << (socket ? qPrintable(socket->peerAddress().toString()) : "local client")
+ << "(didn't receive a heartbeat for over" << peerIter->sentHeartBeats * _heartBeatTimer.interval() / 1000 << "seconds)";
+ peerIter.key()->close();
+ } else {
+ peerIter->sentHeartBeats++;
+ }
+ peerIter++;
+ }
+}
+
+void SignalProxy::receiveHeartBeat(QIODevice *dev, const QVariantList ¶ms) {
+ if(!_peers.contains(dev)) {
+ qWarning() << "SignalProxy: received heart beat from unknown Device:" << dev;
+ }
+ dispatchSignal(dev, SignalProxy::HeartBeatReply, params);
+}
+
+void SignalProxy::receiveHeartBeatReply(QIODevice *dev, const QVariantList ¶ms) {
+ if(!_peers.contains(dev)) {
+ qWarning() << "SignalProxy: received heart beat reply from unknown Device:" << dev;
+ return;
+ }
+
+ _peers[dev].sentHeartBeats = 0;
+
+ if(params.isEmpty()) {
+ qWarning() << "SignalProxy: received heart beat reply with less params then sent from:" << dev;
+ return;
+ }
+
+ QTime sendTime = params[0].value<QTime>();
+ updateLag(dev, sendTime.msecsTo(QTime::currentTime()) / 2);
+}
+
+void SignalProxy::updateLag(QIODevice *dev, int lag) {
+ Q_ASSERT(_peers.contains(dev));
+ _peers[dev].lag = lag;
+ if(proxyMode() == Client) {
+ emit lagUpdated(lag);
+ }
+}
+
+
+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<QByteArray, int> syncMap_ = syncMap(object);
+ QHash<QByteArray, int>::const_iterator iter = syncMap_.constBegin();
+ while(iter != syncMap_.constEnd()) {
+ qDebug() << iter.key() << "-->" << iter.value() << meta->method(iter.value()).signature();
+ iter++;
+ }
+// QHash<int, int> syncMap_ = syncMap(object);
+// QHash<int, int>::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++;
+// }
+}