@Override
public void initializationCompleted() {
if (isInitializationComplete()) {
// Do we really need to do this again?
return;
}
super.initializationCompleted();
initializationCompleted = true;
for (Map<String, Object> params : waitingTasks) {
reconnectService(params, connectionDelay);
}
waitingTasks.clear();
if (null != watchdog) {
watchdog.start();
}
}
protected void setupWatchdogThread() {
watchdog = new Thread(new Watchdog(), "Watchdog - " + getName());
watchdog.setDaemon(true);
}
@Override
public void run() {
while (true) {
try {
// Sleep...
Thread.sleep(watchdogDelay);
++watchdogRuns;
/**
* Walk through all connections and check whether they are really alive. Depending on the
* configuration send either whitespace or XMPP ping if the service is inactive for the
* configured period of time
*/
doForAllServices(
new ServiceChecker<IO>() {
@Override
public void check(final XMPPIOService service) {
try {
if (null != service) {
long curr_time = System.currentTimeMillis();
long lastTransfer;
switch (watchdogPingType) {
case XMPP:
lastTransfer = service.getLastXmppPacketReceiveTime();
break;
case WHITESPACE:
default:
lastTransfer = service.getLastTransferTime();
break;
}
if (curr_time - lastTransfer >= maxInactivityTime) {
// Stop the service if max keep-alive time is exceeded
// for non-active connections.
if (log.isLoggable(Level.INFO)) {
log.log(
Level.INFO,
"{0}: Max inactive time exceeded, stopping: {1}",
new Object[] {getName(), service});
}
++watchdogStopped;
service.stop();
} else {
if (curr_time - lastTransfer >= (watchdogTimeout)) {
/**
* At least once every configured timings check if the connection is still
* alive with the use of configured ping type.
*/
switch (watchdogPingType) {
case XMPP:
pingPacket =
Iq.packetInstance(
pingElement.clone(),
JID.jidInstanceNS(
(String)
service
.getSessionData()
.get(XMPPIOService.HOSTNAME_KEY)),
JID.jidInstanceNS(service.getUserJid()));
if (!writePacketToSocket((IO) service, pingPacket)) {
// writing failed, stopp service
++watchdogStopped;
service.stop();
}
break;
case WHITESPACE:
service.writeRawData(" ");
break;
}
++watchdogTests;
}
}
}
} catch (IOException e) {
// Close the service
try {
if (service != null) {
log.info(getName() + "Found dead connection, stopping: " + service);
++watchdogStopped;
service.forceStop();
}
} catch (Exception ignore) {
// Do nothing here as we expect Exception to be thrown here...
}
}
}
});
} catch (InterruptedException e) {
/* Do nothing here */
}
}
}