public <T> void publish(final SensorEvent<T> event) {
// REVIEW 1459 - execution
// delivery in parallel/background, using execution manager
// subscriptions, should define SingleThreadedScheduler for any subscriber ID tag
// in order to ensure callbacks are invoked in the order they are submitted
// (recommend exactly one per subscription to prevent deadlock)
// this is done with:
// em.setTaskSchedulerForTag(subscriberId, SingleThreadedScheduler.class);
// note, generating the notifications must be done in the calling thread to preserve order
// e.g. emit(A); emit(B); should cause onEvent(A); onEvent(B) in that order
if (LOG.isTraceEnabled()) LOG.trace("{} got a {} event", this, event);
totalEventsPublishedCount.incrementAndGet();
Set<Subscription> subs =
(Set<Subscription>)
((Set<?>) getSubscriptionsForEntitySensor(event.getSource(), event.getSensor()));
if (groovyTruth(subs)) {
if (LOG.isTraceEnabled())
LOG.trace(
"sending {}, {} to {}",
new Object[] {event.getSensor().getName(), event, join(subs, ",")});
for (Subscription s : subs) {
if (s.eventFilter != null && !s.eventFilter.apply(event)) continue;
final Subscription sAtClosureCreation = s;
em.submit(
mapOf("tag", s.subscriberExecutionManagerTag),
new Runnable() {
public void run() {
sAtClosureCreation.listener.onEvent(event);
}
});
totalEventsDeliveredCount.incrementAndGet();
}
}
}
static Object makeEntitySensorToken(SensorEvent<?> se) {
return makeEntitySensorToken(se.getSource(), se.getSensor());
}