/**
* Called by the ServerNotificationManager whenever a notification needs to be sent to the client.
*/
public void fireNotification(NotificationWrapper wrapr) {
if (que.size() < bufsiz) {
synchronized (que) {
que.add(wrapr);
que.notify();
}
}
}
/** Sends an empty notification to the client. An empty notification is sent every 10 seconds. */
public void fireWaitNotif() {
if (!hasIOExceptionOccurred() && (que.size() < bufsiz) && !dispatching && isIdle()) {
synchronized (que) {
que.add(new NotificationWrapper(NotificationWrapper.WAIT, null, null));
que.notify();
}
}
}
/**
* The notifications dispatch thread. The dispatch thread sends all pending notifications in the
* buffer to the client. The dispatch thread exits, whenever an IOException occurs during actual
* dispatch or whenever this connection is being closed (after a call to close())
*/
public void run() {
/* XXX: Even when we are exiting should we send the remaining notifications?
* OR just drop the remaining notifications ?
*
* Currently we drop all the remaining notifications!!
*/
while (!isExiting() && !hasIOExceptionOccurred()) {
synchronized (que) {
while (que.isEmpty() && !isExiting() && !hasIOExceptionOccurred()) {
try {
que.wait();
} catch (InterruptedException intre) {
}
}
}
if (isExiting() || hasIOExceptionOccurred()) break;
dispatching = true;
while (!que.isEmpty() && !isExiting() && !hasIOExceptionOccurred()) {
NotificationWrapper wrapr = (NotificationWrapper) que.remove();
try {
sendNotificationMsg(wrapr);
} catch (IOException ioe) {
if (isExiting()) break;
// XXX: Log it; drop the notification
if (!isDisconnected(ioe)) break;
isIOException = true;
synchronized (this) {
this.notify();
}
break;
}
}
lastNotifTime = System.currentTimeMillis();
dispatching = false;
}
}
/**
* When the server-side connector webapp is shutdown by the servlet container, the
* ServerNotificationManager calls this method. All pending notifications are dropped.
*/
public void close() {
exiting = true;
synchronized (que) {
que.notify();
}
try {
dispatchThr.join();
} catch (InterruptedException intre) {
}
try {
out.close();
} catch (IOException ioe) {
// XXX: Log it
}
}
