/*
* 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;
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.junit.Assert;
import org.junit.Test;
public class ChannelReleaseTest extends ClientServerTest
{
@Test
public void testChannelReleased() throws Exception
{
startServer(null);
BayeuxClient client = newBayeuxClient();
client.handshake();
Assert.assertTrue(client.waitFor(5000, BayeuxClient.State.CONNECTED));
// Wait for the long poll
Thread.sleep(1000);
String channelName = "/foo";
ClientSessionChannel channel = client.getChannel(channelName);
boolean released = channel.release();
Assert.assertTrue(released);
ClientSessionChannel newChannel = client.getChannel(channelName);
Assert.assertNotNull(newChannel);
Assert.assertNotSame(channel, newChannel);
disconnectBayeuxClient(client);
}
@Test
public void testChannelWithListenersNotReleased() throws Exception
{
startServer(null);
BayeuxClient client = newBayeuxClient();
client.handshake();
Assert.assertTrue(client.waitFor(5000, BayeuxClient.State.CONNECTED));
// Wait for the long poll
Thread.sleep(1000);
String channelName = "/foo";
ClientSessionChannel channel = client.getChannel(channelName);
channel.addListener(new ClientSessionChannel.ClientSessionChannelListener()
{
});
boolean released = channel.release();
Assert.assertFalse(released);
ClientSessionChannel newChannel = client.getChannel(channelName);
Assert.assertNotNull(newChannel);
Assert.assertSame(channel, newChannel);
disconnectBayeuxClient(client);
}
@Test
public void testChannelWithSubscriberNotReleased() throws Exception
{
startServer(null);
BayeuxClient client = newBayeuxClient();
client.handshake();
Assert.assertTrue(client.waitFor(5000, BayeuxClient.State.CONNECTED));
// Wait for the long poll
Thread.sleep(1000);
final CountDownLatch latch = new CountDownLatch(1);
String channelName = "/foo";
final ClientSessionChannel channel = client.getChannel(channelName);
client.batch(new Runnable()
{
public void run()
{
channel.subscribe(new ClientSessionChannel.MessageListener()
{
public void onMessage(ClientSessionChannel channel, Message message)
{
latch.countDown();
}
});
channel.publish("");
}
});
Assert.assertTrue(latch.await(5, TimeUnit.SECONDS));
boolean released = channel.release();
Assert.assertFalse(released);
ClientSessionChannel newChannel = client.getChannel(channelName);
Assert.assertNotNull(newChannel);
Assert.assertSame(channel, newChannel);
disconnectBayeuxClient(client);
}
@Test
public void testChannelWithListenerRemovedIsReleased() throws Exception
{
startServer(null);
BayeuxClient client = newBayeuxClient();
client.handshake();
Assert.assertTrue(client.waitFor(5000, BayeuxClient.State.CONNECTED));
// Wait for the long poll
Thread.sleep(1000);
String channelName = "/foo";
ClientSessionChannel channel = client.getChannel(channelName);
ClientSessionChannel.ClientSessionChannelListener listener = new ClientSessionChannel.ClientSessionChannelListener()
{
};
channel.addListener(listener);
boolean released = channel.release();
Assert.assertFalse(released);
channel.removeListener(listener);
Assert.assertTrue(channel.getListeners().isEmpty());
released = channel.release();
Assert.assertTrue(released);
disconnectBayeuxClient(client);
}
@Test
public void testChannelWithSubscriberRemovedIsReleased() throws Exception
{
startServer(null);
BayeuxClient client = newBayeuxClient();
client.handshake();
Assert.assertTrue(client.waitFor(5000, BayeuxClient.State.CONNECTED));
// Wait for the long poll
Thread.sleep(1000);
final CountDownLatch latch = new CountDownLatch(1);
String channelName = "/foo";
final ClientSessionChannel channel = client.getChannel(channelName);
final ClientSessionChannel.MessageListener listener = new ClientSessionChannel.MessageListener()
{
public void onMessage(ClientSessionChannel channel, Message message)
{
latch.countDown();
}
};
client.batch(new Runnable()
{
public void run()
{
channel.subscribe(listener);
channel.publish("");
}
});
Assert.assertTrue(latch.await(5, TimeUnit.SECONDS));
boolean released = channel.release();
Assert.assertFalse(released);
final CountDownLatch unsubscribe = new CountDownLatch(1);
client.getChannel(Channel.META_UNSUBSCRIBE).addListener(new ClientSessionChannel.MessageListener()
{
public void onMessage(ClientSessionChannel channel, Message message)
{
unsubscribe.countDown();
}
});
channel.unsubscribe(listener);
Assert.assertTrue(unsubscribe.await(5, TimeUnit.SECONDS));
Assert.assertTrue(channel.getSubscribers().isEmpty());
released = channel.release();
Assert.assertTrue(released);
disconnectBayeuxClient(client);
}
@Test
public void testReleasedChannelCannotOperate() throws Exception
{
startServer(null);
BayeuxClient client = newBayeuxClient();
client.handshake();
client.waitFor(5000, BayeuxClient.State.CONNECTED);
// Wait for the long poll
Thread.sleep(1000);
String channelName = "/foo";
ClientSessionChannel channel = client.getChannel(channelName);
Assert.assertTrue(channel.release());
Assert.assertTrue(channel.isReleased());
ClientSessionChannel.ClientSessionChannelListener channelListener = new ClientSessionChannel.ClientSessionChannelListener()
{
};
try
{
channel.addListener(channelListener);
Assert.fail();
}
catch (IllegalStateException expected)
{
}
try
{
channel.removeListener(channelListener);
Assert.fail();
}
catch (IllegalStateException expected)
{
}
try
{
channel.setAttribute("foo", "bar");
Assert.fail();
}
catch (IllegalStateException expected)
{
}
try
{
channel.removeAttribute("foo");
Assert.fail();
}
catch (IllegalStateException expected)
{
}
try
{
channel.getAttributeNames();
Assert.fail();
}
catch (IllegalStateException expected)
{
}
ClientSessionChannel.MessageListener listener = new ClientSessionChannel.MessageListener()
{
public void onMessage(ClientSessionChannel channel, Message message)
{
}
};
try
{
channel.subscribe(listener);
Assert.fail();
}
catch (IllegalStateException expected)
{
}
try
{
channel.unsubscribe(listener);
Assert.fail();
}
catch (IllegalStateException expected)
{
}
try
{
channel.unsubscribe();
Assert.fail();
}
catch (IllegalStateException expected)
{
}
try
{
channel.publish("");
Assert.fail();
}
catch (IllegalStateException expected)
{
}
try
{
channel.getSession();
Assert.fail();
}
catch (IllegalStateException expected)
{
}
disconnectBayeuxClient(client);
}
}