/*
* Copyright (c) 2008-2013, Hazelcast, Inc. All Rights Reserved.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package com.hazelcast.queue;
import com.hazelcast.config.Config;
import com.hazelcast.config.ItemListenerConfig;
import com.hazelcast.config.QueueConfig;
import com.hazelcast.core.DistributedObjectEvent;
import com.hazelcast.core.DistributedObjectListener;
import com.hazelcast.core.HazelcastInstance;
import com.hazelcast.core.IQueue;
import com.hazelcast.core.ItemEvent;
import com.hazelcast.core.ItemListener;
import com.hazelcast.test.HazelcastParallelClassRunner;
import com.hazelcast.test.HazelcastTestSupport;
import com.hazelcast.test.TestHazelcastInstanceFactory;
import com.hazelcast.test.annotation.QuickTest;
import org.junit.Test;
import org.junit.experimental.categories.Category;
import org.junit.runner.RunWith;
import java.io.Serializable;
import java.util.concurrent.CountDownLatch;
import java.util.concurrent.TimeUnit;
import java.util.concurrent.atomic.AtomicBoolean;
import static junit.framework.Assert.assertTrue;
@RunWith(HazelcastParallelClassRunner.class)
@Category(QuickTest.class)
public class QueueListenerTest extends HazelcastTestSupport {
private String Qname = "Q";
private int totalQput = 2000;
private Config cfg = new Config();
private SimpleItemListener simpleItemListener = new SimpleItemListener(totalQput);
private ItemListenerConfig itemListenerConfig = new ItemListenerConfig();
private QueueConfig qConfig = new QueueConfig();
//TODO: Don't add a number to a test to test a diferent case. I guess it was already in the system.
@Test
public void testQueueEviction2() throws Exception {
final Config config = new Config();
config.getQueueConfig("q2").setEmptyQueueTtl(0);
final HazelcastInstance hz = createHazelcastInstance(config);
final CountDownLatch latch = new CountDownLatch(2);
hz.addDistributedObjectListener(new DistributedObjectListener() {
@Override
public void distributedObjectCreated(DistributedObjectEvent event) {
latch.countDown();
}
@Override
public void distributedObjectDestroyed(DistributedObjectEvent event) {
latch.countDown();
}
});
final IQueue<Object> q = hz.getQueue("q2");
q.offer("item");
q.poll();
assertTrue(latch.await(10, TimeUnit.SECONDS));
}
@Test
public void testConfigListenerRegistration() throws InterruptedException {
Config config = new Config();
final String name = "queue";
final QueueConfig queueConfig = config.getQueueConfig(name);
final DummyListener dummyListener = new DummyListener();
final ItemListenerConfig itemListenerConfig = new ItemListenerConfig(dummyListener, true);
queueConfig.addItemListenerConfig(itemListenerConfig);
final HazelcastInstance instance = createHazelcastInstance(config);
final IQueue queue = instance.getQueue(name);
queue.offer("item");
queue.poll();
assertTrue(dummyListener.latch.await(10, TimeUnit.SECONDS));
}
private static class DummyListener implements ItemListener, Serializable {
public final CountDownLatch latch = new CountDownLatch(2);
public DummyListener() {
}
public void itemAdded(ItemEvent item) {
latch.countDown();
}
public void itemRemoved(ItemEvent item) {
latch.countDown();
}
}
@Test
public void testItemListener_addedToQueueConfig_Issue366() throws InterruptedException {
itemListenerConfig.setImplementation(simpleItemListener);
itemListenerConfig.setIncludeValue(true);
qConfig.setName(Qname);
qConfig.addItemListenerConfig(itemListenerConfig);
cfg.addQueueConfig(qConfig);
TestHazelcastInstanceFactory factory = createHazelcastInstanceFactory(2);
HazelcastInstance node1 = factory.newHazelcastInstance(cfg);
IQueue queue = node1.getQueue(Qname);
for (int i = 0; i < totalQput / 2; i++) {
queue.put(i);
}
HazelcastInstance node2 = factory.newHazelcastInstance(cfg);
for (int i = 0; i < totalQput / 4; i++) {
queue.put(i);
}
assertTrue(simpleItemListener.added.await(3, TimeUnit.SECONDS));
}
@Test
public void testListeners() throws InterruptedException {
final String name = randomString();
HazelcastInstance instance = createHazelcastInstance();
final CountDownLatch latch = new CountDownLatch(20);
final AtomicBoolean notCalled = new AtomicBoolean(true);
IQueue queue = instance.getQueue(name);
TestItemListener listener = new TestItemListener(latch, notCalled);
final String id = queue.addItemListener(listener, true);
for (int i = 0; i < 10; i++) {
queue.offer("item" + i);
}
for (int i = 0; i < 10; i++) {
queue.poll();
}
assertTrue(latch.await(5, TimeUnit.SECONDS));
queue.removeItemListener(id);
queue.offer("item-a");
queue.poll();
assertTrue(notCalled.get());
}
private static class TestItemListener implements ItemListener {
int offer;
int poll;
CountDownLatch latch;
AtomicBoolean notCalled;
//TODO: Why do you pass an argument if it isn't used??
TestItemListener(CountDownLatch latch, AtomicBoolean notCalled) {
this.latch = latch;
this.notCalled = new AtomicBoolean(true);
}
@Override
public void itemAdded(ItemEvent item) {
if (item.getItem().equals("item" + offer++)) {
latch.countDown();
} else {
notCalled.set(false);
}
}
@Override
public void itemRemoved(ItemEvent item) {
if (item.getItem().equals("item" + poll++)) {
latch.countDown();
} else {
notCalled.set(false);
}
}
}
private static class SimpleItemListener implements ItemListener {
public CountDownLatch added;
public SimpleItemListener(int CountDown) {
added = new CountDownLatch(CountDown);
}
@Override
public void itemAdded(ItemEvent itemEvent) {
added.countDown();
}
@Override
public void itemRemoved(ItemEvent itemEvent) {
}
}
}