Java Code Examples for io.reactivex.SingleObserver#onError()

The following examples show how to use io.reactivex.SingleObserver#onError() . You can vote up the ones you like or vote down the ones you don't like, and go to the original project or source file by following the links above each example. You may check out the related API usage on the sidebar.
Example 1
Source File: SubscribeOnlyOnceSingleOperator.java    From reactive-grpc with BSD 3-Clause "New" or "Revised" License 6 votes vote down vote up 
@Override
public SingleObserver<? super T> apply(final SingleObserver<? super T> observer) {
    return new SingleObserver<T>() {
        @Override
        public void onSubscribe(Disposable d) {
            if (subscribedOnce.getAndSet(true)) {
                throw new NullPointerException("You cannot directly subscribe to a gRPC service multiple times " +
                        "concurrently. Use Flowable.share() instead.");
            } else {
                observer.onSubscribe(d);
            }
        }

        @Override
        public void onSuccess(T t) {
            observer.onSuccess(t);
        }

        @Override
        public void onError(Throwable e) {
            observer.onError(e);
        }
    };
}
Example 2
Source File: MemberSingle.java    From rxjava2-jdbc with Apache License 2.0 6 votes vote down vote up 
@Override
protected void subscribeActual(SingleObserver<? super Member<T>> observer) {
    // the action of checking out a member from the pool is implemented as a
    // subscription to the singleton MemberSingle
    MemberSingleObserver<T> m = new MemberSingleObserver<T>(observer, this);
    observer.onSubscribe(m);
    if (pool.isClosed()) {
        observer.onError(new PoolClosedException());
        return;
    }
    add(m);
    if (m.isDisposed()) {
        remove(m);
    } else {
        // atomically change requested
        while (true) {
            Observers<T> a = observers.get();
            if (observers.compareAndSet(a, a.withRequested(a.requested + 1))) {
                break;
            }
        }
    }
    log.debug("subscribed");
    drain();
}
Example 3
Source File: MaybeConsumers.java    From science-journal with Apache License 2.0 5 votes vote down vote up 
/**
 * MaybeConsumer<T> is very similar to {@link SingleObserver<T>} in JavaRX. Both are looking for
 * either a signal that a computation has succeeded and returned a value of type T, or that it has
 * failed with some exception. For the time period where we are still using both interfaces, we
 * will find it useful to be able to switch between them.
 *
 * @return a {@link MaybeConsumer<T>} that pipes {@link MaybeConsumer#success(Object)} to {@link
 *     SingleObserver#onSuccess(Object)}, and {@link MaybeConsumer#fail(Exception)} to {@link
 *     SingleObserver#onError(Throwable)}
 */
public static <T> MaybeConsumer<T> fromSingleObserver(final SingleObserver<T> o) {
  return new MaybeConsumer<T>() {
    @Override
    public void success(T value) {
      o.onSuccess(value);
    }

    @Override
    public void fail(Exception e) {
      o.onError(e);
    }
  };
}
Example 4
Source File: SingleCircuitBreaker.java    From resilience4j with Apache License 2.0 5 votes vote down vote up 
@Override
protected void subscribeActual(SingleObserver<? super T> downstream) {
    if (circuitBreaker.tryAcquirePermission()) {
        upstream.subscribe(new CircuitBreakerSingleObserver(downstream));
    } else {
        downstream.onSubscribe(EmptyDisposable.INSTANCE);
        downstream.onError(createCallNotPermittedException(circuitBreaker));
    }
}
Example 5
Source File: SingleBulkhead.java    From resilience4j with Apache License 2.0 5 votes vote down vote up 
@Override
protected void subscribeActual(SingleObserver<? super T> downstream) {
    if (bulkhead.tryAcquirePermission()) {
        upstream.subscribe(new BulkheadSingleObserver(downstream));
    } else {
        downstream.onSubscribe(EmptyDisposable.INSTANCE);
        downstream.onError(BulkheadFullException.createBulkheadFullException(bulkhead));
    }
}
Example 6
Source File: SingleRateLimiter.java    From resilience4j with Apache License 2.0 5 votes vote down vote up 
@Override
protected void subscribeActual(SingleObserver<? super T> downstream) {
    long waitDuration = rateLimiter.reservePermission();
    if (waitDuration >= 0) {
        if (waitDuration > 0) {
            Completable.timer(waitDuration, TimeUnit.NANOSECONDS)
                .subscribe(() -> upstream.subscribe(new RateLimiterSingleObserver(downstream)));
        } else {
            upstream.subscribe(new RateLimiterSingleObserver(downstream));
        }
    } else {
        downstream.onSubscribe(EmptyDisposable.INSTANCE);
        downstream.onError(RequestNotPermitted.createRequestNotPermitted(rateLimiter));
    }
}