51 lines
1.7 KiB
Java
51 lines
1.7 KiB
Java
/**
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* Copyright (C) 2009-2013 Typesafe Inc. <http://www.typesafe.com>
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*/
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package docs.dispatcher;
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//#mailbox-implementation-example
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import akka.actor.ActorRef;
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import akka.actor.ActorSystem;
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import akka.dispatch.Envelope;
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import akka.dispatch.MailboxType;
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import akka.dispatch.MessageQueue;
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import akka.dispatch.ProducesMessageQueue;
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import com.typesafe.config.Config;
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import java.util.concurrent.ConcurrentLinkedQueue;
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import java.util.Queue;
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import scala.Option;
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public class MyUnboundedJMailbox implements MailboxType,
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ProducesMessageQueue<MyUnboundedJMailbox.MyMessageQueue> {
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// This is the MessageQueue implementation
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public static class MyMessageQueue implements MessageQueue,
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MyUnboundedJMessageQueueSemantics {
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private final Queue<Envelope> queue =
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new ConcurrentLinkedQueue<Envelope>();
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// these must be implemented; queue used as example
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public void enqueue(ActorRef receiver, Envelope handle) {
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queue.offer(handle);
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}
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public Envelope dequeue() { return queue.poll(); }
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public int numberOfMessages() { return queue.size(); }
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public boolean hasMessages() { return !queue.isEmpty(); }
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public void cleanUp(ActorRef owner, MessageQueue deadLetters) {
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for (Envelope handle: queue) {
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deadLetters.enqueue(owner, handle);
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}
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}
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}
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// This constructor signature must exist, it will be called by Akka
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public MyUnboundedJMailbox(ActorSystem.Settings settings, Config config) {
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// put your initialization code here
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}
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// The create method is called to create the MessageQueue
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public MessageQueue create(Option<ActorRef> owner, Option<ActorSystem> system) {
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return new MyMessageQueue();
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}
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}
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//#mailbox-implementation-example
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