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Jetty example source code file (CometdDemo.java)

This example Jetty source code file (CometdDemo.java) is included in the DevDaily.com "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Java by Example" TM.

Java - Jetty tags/keywords

contexthandlercollection, continuationclient, continuationclient, continuationcometdservlet, io, movedcontexthandler, movedcontexthandler, obf:1vny1zlo1x8e1vnw1vn61x8g1zlu1vn4, selectchannelconnector, server, servletholder, servletholder, sslsocketconnector, string, string, util

The Jetty CometdDemo.java source code

// ========================================================================
// Copyright 2007 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 dojox.cometd.demo;


import java.io.File;
import java.util.Set;

import org.mortbay.cometd.AbstractBayeux;
import org.mortbay.cometd.ClientImpl;
import org.mortbay.cometd.continuation.ContinuationClient;
import org.mortbay.cometd.continuation.ContinuationCometdServlet;
import org.mortbay.cometd.ext.TimesyncExtension;
import org.mortbay.jetty.Server;
import org.mortbay.jetty.handler.ContextHandlerCollection;
import org.mortbay.jetty.handler.MovedContextHandler;
import org.mortbay.jetty.nio.SelectChannelConnector;
import org.mortbay.jetty.security.SslSocketConnector;
import org.mortbay.jetty.servlet.Context;
import org.mortbay.jetty.servlet.ServletHolder;

import dojox.cometd.Message;


/* ------------------------------------------------------------ */
/** Main class for cometd demo.
 * 
 * This is of use when running demo in a terracotta cluster
 * 
 * @author gregw
 *
 */
public class CometdDemo
{
    private static int _testHandshakeFailure;
    
    /* ------------------------------------------------------------ */
    /**
     * @param args
     */
    public static void main(String[] args) throws Exception
    {
        int port = args.length==0?8080:Integer.parseInt(args[0]);
     
        String base="../../..";
        
        // Manually contruct context to avoid hassles with webapp classloaders for now.
        Server server = new Server();
        SelectChannelConnector connector=new SelectChannelConnector();
        connector.setPort(port);
        server.addConnector(connector);
        
        
        SslSocketConnector connector2=new SslSocketConnector();
        connector2.setPort(port-80+443);
        connector2.setKeystore(base+"/etc/keystore");
        connector2.setPassword("OBF:1vny1zlo1x8e1vnw1vn61x8g1zlu1vn4");
        connector2.setKeyPassword("OBF:1u2u1wml1z7s1z7a1wnl1u2g");
        connector2.setTruststore(base+"/etc/keystore");
        connector2.setTrustPassword("OBF:1vny1zlo1x8e1vnw1vn61x8g1zlu1vn4");
        server.addConnector(connector2);  

        
        ContextHandlerCollection contexts = new ContextHandlerCollection();
        server.setHandler(contexts);
        
        MovedContextHandler moved = new MovedContextHandler(contexts,"/","/cometd");
        moved.setDiscardPathInfo(true);
        
        Context context = new Context(contexts,"/cometd",Context.NO_SECURITY|Context.SESSIONS);
	context.setResourceBase("./src/main/webapp");
        
        // Demo bayeux session manager
        // context.getSessionHandler().setSessionManager(new BayeuxSessionManager());
        // context.addServlet(com.acme.SessionDump.class,"/session");
        // context.addServlet(com.acme.Dump.class,"/dump");
        
        
        // Cometd servlet
        ContinuationCometdServlet cometd_servlet=new ContinuationCometdServlet();
        ServletHolder cometd_holder = new ServletHolder(cometd_servlet);
        // cometd_holder.setInitParameter("filters","/WEB-INF/filters.json");
        cometd_holder.setInitParameter("timeout","180000");
        cometd_holder.setInitParameter("interval","0");
        cometd_holder.setInitParameter("maxInterval","10000");
        cometd_holder.setInitParameter("multiFrameInterval","1500");
        cometd_holder.setInitParameter("JSONCommented","true");
        cometd_holder.setInitParameter("logLevel","1");
        
        context.addServlet(cometd_holder, "/cometd/*");
        context.addServlet("org.mortbay.jetty.servlet.DefaultServlet", "/");
        context.addEventListener(new BayeuxStartupListener());
        
        server.start();
        
        AbstractBayeux bayeux = cometd_servlet.getBayeux();
        bayeux.addExtension(new TimesyncExtension());
        
        bayeux.setSecurityPolicy(new AbstractBayeux.DefaultPolicy(){
            public boolean canHandshake(Message message)
            {
                if (_testHandshakeFailure<0)
                {
                    _testHandshakeFailure++;
                    return false;
                }
                return true;
            }
            
        });
        
        while (true)
        {
            Thread.sleep(2000);
            Set<String> ids=bayeux.getClientIDs();
            ClientImpl[] clients=new ClientImpl[ids.size()];
            long[] last=new long[ids.size()];
            int i=0;
            long now = System.currentTimeMillis();
            for (String id : ids)
            {
                clients[i]=(ClientImpl)bayeux.getClient(id);
                
                if (clients[i] instanceof ContinuationClient)
                {
                    ContinuationClient cc= (ContinuationClient)clients[i];

                    last[i]=now - cc.lastAccessed();
                    if (cc.hasMessages() && cc.getContinuation()==null && !cc._timeout.isScheduled() && last[i]>1000)
                        System.err.println("??? "+cc+" last="+last[i]);
                }
                
                i++;
            }
            
            i=0;
            
        }
        
    }

}

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