Examples with DuplicateSubscribeException io.servicetalk.concurrent.internal.DuplicateSubscribeException used on opensource projects

Example 1 with DuplicateSubscribeException

use of io.servicetalk.concurrent.internal.DuplicateSubscribeException in project servicetalk by apple.

the class PublisherProcessor method handleSubscribe.

@Override
protected void handleSubscribe(final Subscriber<? super T> subscriber) {
    final DelayedSubscription delayedSubscription = new DelayedSubscription();
    try {
        subscriber.onSubscribe(delayedSubscription);
    } catch (Throwable t) {
        handleExceptionFromOnSubscribe(subscriber, t);
        return;
    }
    if (consumerUpdater.compareAndSet(this, null, new SubscriberProcessorSignalsConsumer<>(subscriber))) {
        try {
            delayedSubscription.delayedSubscription(this);
            tryEmitSignals();
        } catch (Throwable t) {
            LOGGER.error("Unexpected error while delivering signals to the subscriber {}", subscriber, t);
        }
    } else {
        ProcessorSignalsConsumer<? super T> existingConsumer = this.consumer;
        assert existingConsumer != null;
        @SuppressWarnings("unchecked") final Subscriber<? super T> existingSubscriber = existingConsumer instanceof PublisherProcessor.SubscriberProcessorSignalsConsumer ? ((SubscriberProcessorSignalsConsumer<T>) existingConsumer).subscriber : null;
        safeOnError(subscriber, new DuplicateSubscribeException(existingSubscriber, subscriber));
    }
}

Example 2 with DuplicateSubscribeException

use of io.servicetalk.concurrent.internal.DuplicateSubscribeException in project servicetalk by apple.

the class NettyChannelPublisher method subscribe0.

private void subscribe0(Subscriber<? super T> subscriber) {
    SubscriptionImpl subscription = this.subscription;
    if (subscription != null) {
        deliverErrorFromSource(subscriber, new DuplicateSubscribeException(subscription.associatedSub, subscriber));
    } else {
        assert requestCount == 0;
        subscription = new SubscriptionImpl(subscriber);
        this.subscription = subscription;
        subscriber.onSubscribe(subscription);
        // In absence of the below, any subsequent Subscriber will not get any fatal error.
        if (subscription == this.subscription && !processPending(subscription) && (fatalError != null && !hasQueuedSignals())) {
            // We are already on the eventloop, so we are sure that nobody else is emitting to the Subscriber.
            emitError(subscription, fatalError);
        }
    }
}