@Override
public void request(long n) {
if (n < 0L) {
throw new IllegalArgumentException("n >= 0 required but it was " + n);
}
if (n != 0 && compareAndSet(false, true)) {
actual.add(onSchedule.call(this));
}
}
@Override
public void call(final Subscriber<? super T> subscriber) {
try {
// create the resource
final Resource resource = resourceFactory.call();
// create an action/subscription that disposes only once
final DisposeAction<Resource> disposeOnceOnly =
new DisposeAction<Resource>(dispose, resource);
// dispose on unsubscription
subscriber.add(disposeOnceOnly);
// create the observable
final Observable<? extends T> source =
observableFactory
// create the observable
.call(resource);
final Observable<? extends T> observable;
// supplement with on termination disposal if requested
if (disposeEagerly)
observable =
source
// dispose on completion or error
.doOnTerminate(disposeOnceOnly);
else observable = source;
try {
// start
observable.unsafeSubscribe(Subscribers.wrap(subscriber));
} catch (Throwable e) {
Throwable disposeError = disposeEagerlyIfRequested(disposeOnceOnly);
Exceptions.throwIfFatal(e);
Exceptions.throwIfFatal(disposeError);
if (disposeError != null)
subscriber.onError(new CompositeException(Arrays.asList(e, disposeError)));
else
// propagate error
subscriber.onError(e);
}
} catch (Throwable e) {
// then propagate error
Exceptions.throwOrReport(e, subscriber);
}
}