/*
* Copyright (c) 2014 Cisco Systems, Inc. and others. All rights reserved.
*
* This program and the accompanying materials are made available under the
* terms of the Eclipse Public License v1.0 which accompanies this distribution,
* and is available at http://www.eclipse.org/legal/epl-v10.html
*/
package org.opendaylight.controller.cluster.common.actor;
import akka.actor.ActorRef;
import akka.actor.ActorSystem;
import akka.actor.DeadLetter;
import akka.actor.Props;
import akka.actor.UntypedActor;
import akka.testkit.JavaTestKit;
import com.typesafe.config.ConfigFactory;
import java.util.concurrent.TimeUnit;
import java.util.concurrent.locks.ReentrantLock;
import org.junit.AfterClass;
import org.junit.BeforeClass;
import org.junit.Test;
import scala.concurrent.duration.FiniteDuration;
public class MeteredBoundedMailboxTest {
private static ActorSystem actorSystem;
private static CommonConfig config;
private final ReentrantLock lock = new ReentrantLock();
@BeforeClass
public static void setUp() throws Exception {
config = new CommonConfig.Builder<>("testsystem").withConfigReader(() -> ConfigFactory.load()).build();
actorSystem = ActorSystem.create("testsystem", config.get());
}
@AfterClass
public static void tearDown() throws Exception {
if (actorSystem != null) {
actorSystem.terminate();
actorSystem = null;
}
}
@Test
public void shouldSendMsgToDeadLetterWhenQueueIsFull() throws InterruptedException {
final JavaTestKit mockReceiver = new JavaTestKit(actorSystem);
actorSystem.eventStream().subscribe(mockReceiver.getRef(), DeadLetter.class);
final FiniteDuration twentySeconds = new FiniteDuration(20, TimeUnit.SECONDS);
ActorRef pingPongActor = actorSystem.actorOf(PingPongActor.props(lock).withMailbox(config.getMailBoxName()),
"pingpongactor");
actorSystem.mailboxes().settings();
lock.lock();
try {
//queue capacity = 10
//need to send 12 messages; 1 message is dequeued and actor waits on lock,
//2nd to 11th messages are put on the queue
//12th message is sent to dead letter.
for (int i = 0; i < 12; i++) {
pingPongActor.tell("ping", mockReceiver.getRef());
}
mockReceiver.expectMsgClass(twentySeconds, DeadLetter.class);
} finally {
lock.unlock();
}
mockReceiver.receiveN(11, twentySeconds);
}
/**
* For testing.
*/
public static class PingPongActor extends UntypedActor {
ReentrantLock lock;
private PingPongActor(final ReentrantLock lock) {
this.lock = lock;
}
public static Props props(final ReentrantLock lock) {
return Props.create(PingPongActor.class, lock);
}
@Override
public void onReceive(final Object message) throws Exception {
lock.lock();
try {
if ("ping".equals(message)) {
getSender().tell("pong", getSelf());
}
} finally {
lock.unlock();
}
}
}
}