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Type safe Actor Model toolkit for reactive concurrency and resiliency using Java and other JVM languages.
// Copyright © 2012-2018 Vaughn Vernon. All rights reserved.
//
// This Source Code Form is subject to the terms of the
// Mozilla Public License, v. 2.0. If a copy of the MPL
// was not distributed with this file, You can obtain
// one at https://mozilla.org/MPL/2.0/.
package io.vlingo.actors.pubsub;
public class DefaultPublisher implements Publisher {
private final Subscriptions subscriptions = new Subscriptions();
@Override
public void publish(final Topic topic, final Message message) {
subscriptions.forTopic(topic).forEach(subscriber -> subscriber.receive(message));
}
@Override
public boolean subscribe(final Topic topic, final Subscriber> subscriber) {
final AffectedSubscriptions affectedSubscriptions = subscriptions.create(topic, subscriber);
return affectedSubscriptions.hasAny();
}
@Override
public boolean unsubscribe(final Topic topic, final Subscriber> subscriber) {
final AffectedSubscriptions affectedSubscriptions = subscriptions.cancel(topic, subscriber);
return affectedSubscriptions.hasAny();
}
@Override
public void unsubscribeAllTopics(final Subscriber> subscriber) {
subscriptions.cancelAll(subscriber);
}
}