// ========================================================================
// Copyright 2007-2008 Mort Bay Consulting Pty. Ltd.
// ------------------------------------------------------------------------
// 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.demo;
import javax.servlet.ServletContextAttributeEvent;
import javax.servlet.ServletContextAttributeListener;
import org.cometd.Bayeux;
import org.cometd.Client;
import org.cometd.Message;
import org.mortbay.cometd.BayeuxService;
import org.mortbay.cometd.ext.AcknowledgedMessagesExtension;
import org.mortbay.cometd.ext.TimesyncExtension;
import org.mortbay.log.Log;
public class BayeuxServicesListener implements ServletContextAttributeListener
{
public void initialize(Bayeux bayeux)
{
synchronized(bayeux)
{
if (!bayeux.hasChannel("/service/echo"))
{
new EchoRPC(bayeux);
new Monitor(bayeux);
new ChatService(bayeux);
bayeux.addExtension(new TimesyncExtension());
bayeux.addExtension(new AcknowledgedMessagesExtension());
}
}
}
public void attributeAdded(ServletContextAttributeEvent scab)
{
if (scab.getName().equals(Bayeux.DOJOX_COMETD_BAYEUX))
{
Bayeux bayeux=(Bayeux)scab.getValue();
initialize(bayeux);
}
}
public void attributeRemoved(ServletContextAttributeEvent scab)
{
}
public void attributeReplaced(ServletContextAttributeEvent scab)
{
}
public static class EchoRPC extends BayeuxService
{
public EchoRPC(Bayeux bayeux)
{
super(bayeux,"echo");
subscribe("/service/echo","doEcho");
}
public Object doEcho(Client client, Object data)
{
Log.info("ECHO from "+client+" "+data);
return data;
}
}
public static class Monitor extends BayeuxService
{
public Monitor(Bayeux bayeux)
{
super(bayeux,"monitor");
subscribe("/meta/subscribe","monitorSubscribe");
subscribe("/meta/unsubscribe","monitorUnsubscribe");
subscribe("/meta/*","monitorMeta");
// subscribe("/**","monitorVerbose");
}
public void monitorSubscribe(Client client, Message message)
{
Log.info("Subscribe from "+client+" for "+message.get(Bayeux.SUBSCRIPTION_FIELD));
}
public void monitorUnsubscribe(Client client, Message message)
{
Log.info("Unsubscribe from "+client+" for "+message.get(Bayeux.SUBSCRIPTION_FIELD));
}
public void monitorMeta(Client client, Message message)
{
if (Log.isDebugEnabled())
Log.debug(message.toString());
}
/*
public void monitorVerbose(Client client, Message message)
{
System.err.println(message);
try
{
Thread.sleep(5000);
}
catch(Exception e)
{
Log.warn(e);
}
}
*/
}
}