#include <QRegExp>
#include <QThread>
#include <QTime>
+#include <QEvent>
+#include <QCoreApplication>
#include "syncableobject.h"
#include "util.h"
+// ==================================================
+// PeerSignalEvent
+// ==================================================
+class PeerSignalEvent : public QEvent {
+public:
+ PeerSignalEvent(SignalProxy *sender, SignalProxy::RequestType requestType, const QVariantList ¶ms) : QEvent(QEvent::Type(SignalProxy::PeerSignal)), sender(sender), requestType(requestType), params(params) {}
+ SignalProxy *sender;
+ SignalProxy::RequestType requestType;
+ QVariantList params;
+};
+
+class RemovePeerEvent : public QEvent {
+public:
+ RemovePeerEvent(QObject *peer) : QEvent(QEvent::Type(SignalProxy::RemovePeer)), peer(peer) {}
+ QObject *peer;
+};
// ==================================================
// SIGNALRELAY
void setSynchronize(bool);
bool synchronize() const;
-
+
int sigCount() const;
-
+
private:
bool isSyncMethod(int i);
-
+
SignalProxy* proxy;
QObject* caller;
QMultiHash<int, QByteArray> sigNames;
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);
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;
dispatchPackedFunc(QVariant(packedFunc));
}
+QString SignalProxy::IODevicePeer::address() const {
+ QAbstractSocket *socket = qobject_cast<QAbstractSocket *>(_device);
+ if(socket)
+ return socket->peerAddress().toString();
+ else
+ return QString();
+}
+
+void SignalProxy::SignalProxyPeer::dispatchSignal(const RequestType &requestType, const QVariantList ¶ms) {
+ Qt::ConnectionType type = QThread::currentThread() == receiver->thread()
+ ? Qt::DirectConnection
+ : Qt::QueuedConnection;
+
+ if(type == Qt::DirectConnection) {
+ receiver->receivePeerSignal(sender, requestType, params);
+ } else {
+ QCoreApplication::postEvent(receiver, new PeerSignalEvent(sender, requestType, params));
+ }
+}
+
// ==================================================
// SignalProxy
// ==================================================
setProxyMode(mode);
addPeer(device);
init();
-}
+}
SignalProxy::~SignalProxy() {
QList<QObject*> senders = _relayHash.keys();
foreach(QObject* sender, senders)
detachObject(sender);
+ removeAllPeers();
}
void SignalProxy::setProxyMode(ProxyMode mode) {
bool SignalProxy::addPeer(QIODevice* iodev) {
if(!iodev)
return false;
-
+
if(_peers.contains(iodev))
return true;
return false;
}
- if(!iodev->isOpen())
- qWarning("SignalProxy::the device you passed is not open!");
+ if(!iodev->isOpen()) {
+ qWarning("SignalProxy::addPeer(QIODevice *iodev): iodev needs to be open!");
+ return false;
+ }
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()));
+ if(!iodev->parent())
+ iodev->setParent(this);
+
+ _peers[iodev] = new IODevicePeer(iodev, iodev->property("UseCompression").toBool());
+
+ if(_peers.count() == 1)
+ emit connected();
+
+ return true;
+}
+
+bool SignalProxy::addPeer(SignalProxy* proxy) {
+ if(!proxy)
+ return false;
+
+ if(proxyMode() == proxy->proxyMode()) {
+ qWarning() << "SignalProxy::addPeer(): adding a SignalProxy as peer requires one proxy to be server and one client!";
+ return false;
}
- // we take ownership of that device
- iodev->setParent(this);
+ if(_peers.contains(proxy)) {
+ return true;
+ }
- _peers[iodev] = new IODevicePeer(iodev, iodev->property("UseCompression").toBool());
+ if(proxyMode() == Client && !_peers.isEmpty()) {
+ qWarning("SignalProxy: only one peer allowed in client mode!");
+ return false;
+ }
+
+ _peers[proxy] = new SignalProxyPeer(this, proxy);
+ proxy->addPeer(this);
if(_peers.count() == 1)
emit connected();
// wee need to copy that list since we modify it in the loop
QList<QObject *> peers = _peers.keys();
foreach(QObject *peer, peers) {
- switch(_peers[peer]->type()) {
- case AbstractPeer::IODevicePeer:
- removePeer(static_cast<QIODevice *>(peer));
- break;
- case AbstractPeer::SignalProxyPeer:
- removePeer(static_cast<SignalProxy *>(peer));
- break;
- default:
- Q_ASSERT(false); // there shouldn't be any peers with wrong / unknown type
- }
+ removePeer(peer);
}
}
-void SignalProxy::removePeer(QIODevice* iodev) {
+void SignalProxy::removePeer(QObject* dev) {
if(_peers.isEmpty()) {
qWarning() << "SignalProxy::removePeer(): No peers in use!";
return;
}
- Q_ASSERT(iodev);
- if(!_peers.contains(iodev)) {
- qWarning() << "SignalProxy: unknown QIODevice" << iodev;
+ Q_ASSERT(dev);
+ if(!_peers.contains(dev)) {
+ qWarning() << "SignalProxy: unknown Peer" << dev;
return;
}
- AbstractPeer *peer = _peers[iodev];
- _peers.remove(iodev);
- delete peer;
-
- disconnect(iodev, 0, this, 0);
- emit peerRemoved(iodev);
+ AbstractPeer *peer = _peers[dev];
+ _peers.remove(dev);
- if(_peers.isEmpty())
- emit disconnected();
-}
+ disconnect(dev, 0, this, 0);
+ if(peer->type() == AbstractPeer::IODevicePeer)
+ emit peerRemoved(static_cast<QIODevice *>(dev));
-void SignalProxy::removePeer(SignalProxy *proxy) {
- if(!_peers.contains(proxy)) {
- qWarning() << "SignalProxy: unknown QIODevice" << proxy;
- return;
+ if(peer->type() == AbstractPeer::SignalProxyPeer) {
+ SignalProxy *proxy = static_cast<SignalProxy *>(dev);
+ if(proxy->_peers.contains(this))
+ proxy->removePeer(this);
}
- _peers.remove(proxy);
+ if(dev->parent() == this)
+ dev->deleteLater();
+
+ delete peer;
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);
+ removePeer(sender());
}
void SignalProxy::objectRenamed(const QString &newname, const QString &oldname) {
if(proxyMode() == Client)
return;
-
+
QVariantList params;
params << "__objectRenamed__" << className << newname << oldname;
dispatchSignal(RpcCall, params);
const QList<int> &SignalProxy::argTypes(QObject *obj, int methodId) {
const QMetaObject *meta = metaObject(obj);
+ if(!_classInfo.contains(meta))
+ qDebug() << obj << meta;
Q_ASSERT(_classInfo.contains(meta));
if(!_classInfo[meta]->argTypes.contains(methodId))
setArgTypes(obj, 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)
signature = QByteArray(requestSlot.signature());
if(!signature.startsWith("request"))
continue;
-
+
paramsPos = signature.indexOf('(');
if(paramsPos == -1)
continue;
if(receiverId != -1)
receiveMap[i] = receiverId;
}
- _classInfo[meta]->receiveMap = receiveMap;
+ _classInfo[meta]->receiveMap = receiveMap;
}
const QHash<int, int> &SignalProxy::receiveMap(SyncableObject *obj) {
void SignalProxy::synchronize(SyncableObject *obj) {
createClassInfo(obj);
setUpdatedRemotelyId(obj);
-
+
// attaching all the Signals
SignalRelay* relay;
if(_relayHash.contains(obj))
case AbstractPeer::IODevicePeer:
{
IODevicePeer *ioPeer = static_cast<IODevicePeer *>(*peer);
- ioPeer->dispatchPackedFunc(packedFunc);
+ if(ioPeer->isOpen())
+ ioPeer->dispatchPackedFunc(packedFunc);
+ else
+ QCoreApplication::postEvent(this, new RemovePeerEvent(peer.key()));
}
break;
case AbstractPeer::SignalProxyPeer:
RequestType requestType = (RequestType)params.takeFirst().value<int>();
receivePeerSignal(sender, requestType, params);
}
-
+
void SignalProxy::receivePeerSignal(AbstractPeer *sender, const RequestType &requestType, const QVariantList ¶ms) {
switch(requestType) {
case RpcCall:
case Sync:
handleSync(sender, params);
break;
-
+
case InitRequest:
handleInitRequest(sender, params);
break;
-
+
case InitData:
handleInitData(sender, params);
break;
-
+
case HeartBeat:
receiveHeartBeat(sender, params);
break;
}
}
+void SignalProxy::receivePeerSignal(SignalProxy *sender, const RequestType &requestType, const QVariantList ¶ms) {
+ if(!_peers.contains(sender)) {
+ // we output only the pointer value. otherwise Qt would try to pretty print. As the object might already been destroyed, this is not a good idea.
+ qWarning() << "SignalProxy::receivePeerSignal(): received Signal from unknown Proxy" << reinterpret_cast<void *>(sender);
+ return;
+ }
+ receivePeerSignal(_peers[sender], requestType, params);
+}
+
void SignalProxy::handleSync(AbstractPeer *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();
returnParams << returnValue;
sender->dispatchSignal(Sync, returnParams);
}
-
+
// send emit update signal
invokeSlot(receiver, updatedRemotelyId(receiver));
}
<< 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;
<< className << objectName;
return;
}
-
+
SyncableObject *obj = _syncSlave[className][objectName];
QVariantList params_;
<< params;
return;
}
-
+
QByteArray className(params[0].toByteArray());
QString objectName(params[1].toString());
QVariantMap propertyMap(params[2].toMap());
return false;
}
- void *_a[] = {0, // return type...
+ 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};
if(returnValue.type() != QVariant::Invalid)
_a[0] = const_cast<void *>(returnValue.constData());
-
+
Qt::ConnectionType type = QThread::currentThread() == receiver->thread()
? Qt::DirectConnection
: Qt::QueuedConnection;
// note to self: qmetaobject.cpp:990 ff
return false;
}
-
+
}
bool SignalProxy::invokeSlot(QObject *receiver, int methodId, const QVariantList ¶ms) {
QDataStream out(&block, QIODevice::WriteOnly);
out.setVersion(QDataStream::Qt_4_2);
out << (quint32)0;
-
+
if(compressed) {
QByteArray rawItem;
QDataStream itemStream(&rawItem, QIODevice::WriteOnly);
}
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();
+ disconnectDevice(dev, tr("Client tried to send package larger than max package size!"));
return false;
}
-
+
+ if(blockSize == 0) {
+ disconnectDevice(dev, tr("Client tried to send 0 byte package!"));
+ return false;
+ }
+
if(dev->bytesAvailable() < blockSize)
return false;
+ blockSize = 0;
+
if(compressed) {
QByteArray rawItem;
in >> rawItem;
- // debug check
+
int nbytes = rawItem.size();
- if (nbytes <= 4) {
+ if(nbytes <= 4) {
const char *data = rawItem.constData();
- if (nbytes < 4 || (data[0]!=0 || data[1]!=0 || data[2]!=0 || data[3]!=0))
- qWarning() << "receieved corrupted compressed data:"
- << blockSize << rawItem << rawItem.size() << dev;
+ if(nbytes < 4 || (data[0]!=0 || data[1]!=0 || data[2]!=0 || data[3]!=0)) {
+ disconnectDevice(dev, tr("Client sent corrupted compressed data!"));
+ return false;
+ }
}
- // end
+
rawItem = qUncompress(rawItem);
-
+
QDataStream itemStream(&rawItem, QIODevice::ReadOnly);
itemStream.setVersion(QDataStream::Qt_4_2);
itemStream >> item;
in >> item;
}
- blockSize = 0;
+ if(!item.isValid()) {
+ disconnectDevice(dev, tr("Client sent corrupt data: unable to load QVariant!"));
+ return false;
+ }
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))
+ QString baseName = methodBaseName(signal);
+ if(baseName != methodBaseName(slot))
return false;
// are the signatures compatible?
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();
-
+ QString signalsuffix = ::methodName(signal);
+ QString slotprefix = ::methodName(slot);
+ if(!baseName.isEmpty()) {
+ signalsuffix = signalsuffix.mid(baseName.count()).toLower();
+ slotprefix = slotprefix.left(slotprefix.count() - baseName.count()).toLower();
+ }
+
uint sizediff = qAbs(slotprefix.size() - signalsuffix.size());
int ratio = editingDistance(slotprefix, signalsuffix) - sizediff;
+// if(ratio < 2) {
+// qDebug() << Q_FUNC_INFO;
+// qDebug() << methodBaseName(signal) << methodBaseName(slot);
+// qDebug() << signalsuffix << slotprefix << sizediff << ratio;
+// }
return (ratio < 2);
}
}
void SignalProxy::sendHeartBeat() {
- dispatchSignal(SignalProxy::HeartBeat, QVariantList() << QTime::currentTime());
+ QVariantList heartBeatParams;
+ heartBeatParams << QTime::currentTime();
PeerHash::iterator peer = _peers.begin();
while(peer != _peers.end()) {
if((*peer)->type() == AbstractPeer::IODevicePeer) {
IODevicePeer *ioPeer = static_cast<IODevicePeer *>(*peer);
+ ioPeer->dispatchSignal(SignalProxy::HeartBeat, heartBeatParams);
if(ioPeer->sentHeartBeats > 0) {
updateLag(ioPeer, ioPeer->sentHeartBeats * _heartBeatTimer.interval());
}
if(ioPeer->sentHeartBeats > 1) {
- //FIXME: proper disconnect.
-// 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();
+ qWarning() << "SignalProxy: Disconnecting peer:" << ioPeer->address()
+ << "(didn't receive a heartbeat for over" << ioPeer->sentHeartBeats * _heartBeatTimer.interval() / 1000 << "seconds)";
+ ioPeer->close();
} else {
ioPeer->sentHeartBeats++;
}
ioPeer->sentHeartBeats = 0;
if(params.isEmpty()) {
- qWarning() << "SignalProxy: received heart beat reply with less params then sent from:" << ioPeer->device();
+ qWarning() << "SignalProxy: received heart beat reply with less params then sent from:" << ioPeer->address();
return;
}
-
+
QTime sendTime = params[0].value<QTime>();
updateLag(ioPeer, sendTime.msecsTo(QTime::currentTime()) / 2);
}
+void SignalProxy::customEvent(QEvent *event) {
+ switch(event->type()) {
+ case PeerSignal:
+ {
+ PeerSignalEvent *e = static_cast<PeerSignalEvent *>(event);
+ receivePeerSignal(e->sender, e->requestType, e->params);
+ }
+ event->accept();
+ break;
+ case RemovePeer:
+ {
+ RemovePeerEvent *e = static_cast<RemovePeerEvent *>(event);
+ removePeer(e->peer);
+ }
+ event->accept();
+ default:
+ return;
+ }
+}
+
+void SignalProxy::disconnectDevice(QIODevice *dev, const QString &reason) {
+ if(!reason.isEmpty())
+ qWarning() << qPrintable(reason);
+ QAbstractSocket *sock = qobject_cast<QAbstractSocket *>(dev);
+ if(sock)
+ qWarning() << qPrintable(tr("Disconnecting")) << qPrintable(sock->peerAddress().toString());
+ dev->close();
+}
+
void SignalProxy::updateLag(IODevicePeer *peer, int lag) {
peer->lag = lag;
if(proxyMode() == Client) {
int slaveCount = 0;
foreach(ObjectId oid, _syncSlave.values())
slaveCount += oid.count();
-
+
qDebug() << this;
qDebug() << " Proxy Mode:" << mode;
qDebug() << "attached sending Objects:" << _relayHash.count();
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();
+ qDebug() << qPrintable(QString("%1 --> %2 %3").arg(QString(iter.key()), 40).arg(iter.value()).arg(QString(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++;
-// }
}
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