/*
* Copyright (c) 2008-2014 the original author or authors.
*
* 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 org.cometd.client.ext;
import java.util.concurrent.BlockingQueue;
import java.util.concurrent.CountDownLatch;
import java.util.concurrent.TimeUnit;
import org.cometd.bayeux.Channel;
import org.cometd.bayeux.Message;
import org.cometd.bayeux.client.ClientSessionChannel;
import org.cometd.bayeux.server.ServerChannel;
import org.cometd.client.BayeuxClient;
import org.cometd.client.ClientServerTest;
import org.cometd.server.ext.AcknowledgedMessagesExtension;
import org.eclipse.jetty.util.BlockingArrayQueue;
import org.junit.Assert;
import org.junit.Before;
import org.junit.Test;
public class AckExtensionTest extends ClientServerTest
{
@Before
public void init() throws Exception
{
startServer(null);
}
@Test
public void testAck() throws Exception
{
final BayeuxClient client = newBayeuxClient();
bayeux.addExtension(new AcknowledgedMessagesExtension());
client.addExtension(new AckExtension());
final String channelName = "/chat/demo";
final BlockingQueue<Message> messages = new BlockingArrayQueue<>();
client.getChannel(Channel.META_HANDSHAKE).addListener(new ClientSessionChannel.MessageListener()
{
public void onMessage(ClientSessionChannel channel, Message message)
{
if (message.isSuccessful())
{
client.getChannel(channelName).subscribe(new ClientSessionChannel.MessageListener()
{
public void onMessage(ClientSessionChannel channel, Message message)
{
messages.add(message);
}
});
}
}
});
final CountDownLatch subscribed = new CountDownLatch(1);
client.getChannel(Channel.META_SUBSCRIBE).addListener(new ClientSessionChannel.MessageListener()
{
public void onMessage(ClientSessionChannel channel, Message message)
{
if (message.isSuccessful() && channelName.equals(message.get(Message.SUBSCRIPTION_FIELD)))
subscribed.countDown();
}
});
client.handshake();
Assert.assertTrue(subscribed.await(5, TimeUnit.SECONDS));
Assert.assertEquals(0, messages.size());
final ServerChannel chatChannel = bayeux.getChannel(channelName);
Assert.assertNotNull(chatChannel);
final int count = 5;
client.batch(new Runnable()
{
public void run()
{
for (int i = 0; i < count; ++i)
client.getChannel(channelName).publish("hello_" + i);
}
});
for (int i = 0; i < count; ++i)
Assert.assertEquals("hello_" + i, messages.poll(5, TimeUnit.SECONDS).getData());
// Wait for the long poll to happen
Thread.sleep(1000);
int port = connector.getLocalPort();
connector.stop();
// Wait for connections to process the remote close
Thread.sleep(1000);
Assert.assertTrue(connector.isStopped());
Assert.assertTrue(client.waitFor(5000, BayeuxClient.State.UNCONNECTED));
// Send messages while client is offline
for (int i = count; i < 2 * count; ++i)
chatChannel.publish(null, "hello_" + i);
Thread.sleep(1000);
Assert.assertEquals(0, messages.size());
connector.setPort(port);
connector.start();
Assert.assertTrue(client.waitFor(5000, BayeuxClient.State.CONNECTED));
// Check that the offline messages are received
for (int i = count; i < 2 * count; ++i)
Assert.assertEquals("hello_" + i, messages.poll(5, TimeUnit.SECONDS).getData());
// Send messages while client is online
client.batch(new Runnable()
{
public void run()
{
for (int i = 2 * count; i < 3 * count; ++i)
client.getChannel(channelName).publish("hello_" + i);
}
});
// Check if messages after reconnect are received
for (int i = 2 * count; i < 3 * count; ++i)
Assert.assertEquals("hello_" + i, messages.poll(5, TimeUnit.SECONDS).getData());
disconnectBayeuxClient(client);
}
}