@Override
public void deactivate() {
super.deactivate();
((PropertiesChangeSupport) getModel()).removePropertyChangeListener(this);
SharedThreadPool.getInstance()
.execute(
new Runnable() {
@Override
@TaskDescription("Clear workflow node in validation support.")
public void run() {
validationSupport.setWorkflowNodeAndValidation(null);
}
});
}
/**
* Implementation of the OSGi {@link LogListener} interface that asynchronously forwards each
* event to a given {@link SerializableLogListener}.
*
* @author Robert Mischke
*/
private final class SingleReceiverOsgiLogForwarder implements LogListener {
private static final String ASYNC_TASK_DESCRIPTION = "Forward log event to listener";
private final SerializableLogListener externalListener;
// TODO review exception policy; which is better?
private final AsyncOrderedExecutionQueue orderedExecutionQueue =
new AsyncOrderedExecutionQueue(
AsyncCallbackExceptionPolicy.LOG_AND_CANCEL_LISTENER, SharedThreadPool.getInstance());
private SingleReceiverOsgiLogForwarder(SerializableLogListener externalListener) {
this.externalListener = externalListener;
}
@Override
public void logged(final LogEntry entry) {
if (entry.getLevel() == LogService.LOG_DEBUG) {
return;
}
orderedExecutionQueue.enqueue(
new Runnable() {
@Override
@TaskDescription(ASYNC_TASK_DESCRIPTION)
public void run() {
try {
String exceptionString = "";
if (entry.getException() != null) {
exceptionString = entry.getException().toString();
}
externalListener.logged(
new SerializableLogEntry(
entry.getBundle().getSymbolicName(),
entry.getLevel(),
entry.getMessage().replaceAll("\n", SerializableLogEntry.RCE_SEPARATOR),
entry.getTime(),
exceptionString));
} catch (RemoteOperationException e) {
final Log localLog = LogFactory.getLog(getClass());
localLog.error(
"Error while forwarding log event to listener "
+ "(delivery of log events to this receiver will be cancelled): "
+ e.toString());
// TODO >7.0.0: these lines should be equivalent, but aren't; investigate why -
// misc_ro, Nov 2015
// orderedExecutionQueue.cancelAsync();
throw new RuntimeException(
"Error while forwarding log event to listener"); // workaround to restore
// behavior
}
// the @TaskDescription is not forwarded by AsyncOrderedExecutionQueue, so count a
// stats event for monitoring - misc_ro
StatsCounter.count(
AsyncOrderedExecutionQueue.STATS_COUNTER_SHARED_CATEGORY_NAME,
ASYNC_TASK_DESCRIPTION);
}
});
}
public void shutdown() {
orderedExecutionQueue.cancelAsync();
}
}
