001/*
002 *   Licensed to the Apache Software Foundation (ASF) under one
003 *   or more contributor license agreements.  See the NOTICE file
004 *   distributed with this work for additional information
005 *   regarding copyright ownership.  The ASF licenses this file
006 *   to you under the Apache License, Version 2.0 (the
007 *   "License"); you may not use this file except in compliance
008 *   with the License.  You may obtain a copy of the License at
009 *
010 *     http://www.apache.org/licenses/LICENSE-2.0
011 *
012 *   Unless required by applicable law or agreed to in writing,
013 *   software distributed under the License is distributed on an
014 *   "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
015 *   KIND, either express or implied.  See the License for the
016 *   specific language governing permissions and limitations
017 *   under the License.
018 *
019 */
020package org.apache.mina.example.imagine.step3.server;
021
022import java.lang.management.ManagementFactory;
023import java.net.InetSocketAddress;
024import java.util.concurrent.Executors;
025
026import javax.management.MBeanServer;
027import javax.management.ObjectName;
028
029import org.apache.mina.core.filterchain.DefaultIoFilterChainBuilder;
030import org.apache.mina.example.imagine.step1.codec.ImageCodecFactory;
031import org.apache.mina.filter.codec.ProtocolCodecFilter;
032import org.apache.mina.filter.executor.ExecutorFilter;
033import org.apache.mina.integration.jmx.IoFilterMBean;
034import org.apache.mina.integration.jmx.IoServiceMBean;
035import org.apache.mina.transport.socket.nio.NioSocketAcceptor;
036
037/**
038 * entry point for the server used in the tutorial on protocol codecs
039 *
040 * @author <a href="http://mina.apache.org">Apache MINA Project</a>
041 */
042
043public class ImageServer {
044    public static final int PORT = 33789;
045
046    public static void main(String[] args) throws Exception {
047        
048        // create a JMX MBean Server server instance
049        MBeanServer mBeanServer = ManagementFactory.getPlatformMBeanServer();
050        
051        // Create a class that handles sessions, incoming and outgoing data.  For
052        // this step, we will pass in the MBeanServer so that sessions can be 
053        // registered on the MBeanServer.
054        ImageServerIoHandler handler = new ImageServerIoHandler( mBeanServer );
055        
056        // This socket acceptor will handle incoming connections
057        NioSocketAcceptor acceptor = new NioSocketAcceptor();
058        
059        // create a JMX-aware bean that wraps a MINA IoService object.  In this
060        // case, a NioSocketAcceptor.  
061        IoServiceMBean acceptorMBean = new IoServiceMBean( acceptor );
062        
063        // create a JMX ObjectName.  This has to be in a specific format.  
064        ObjectName acceptorName = new ObjectName( acceptor.getClass().getPackage().getName() + 
065            ":type=acceptor,name=" + acceptor.getClass().getSimpleName());
066        
067        // register the bean on the MBeanServer.  Without this line, no JMX will happen for
068        // this acceptor.
069        mBeanServer.registerMBean( acceptorMBean, acceptorName );
070        
071        // add an IoFilter .  This class is responsible for converting the incoming and 
072        // outgoing raw data to ImageRequest and ImageResponse objects
073        ProtocolCodecFilter protocolFilter = new ProtocolCodecFilter(new ImageCodecFactory(false));
074        
075        // create a JMX-aware bean that wraps a MINA IoFilter object.  In this
076        // case, a ProtocolCodecFilter
077        IoFilterMBean protocolFilterMBean = new IoFilterMBean( protocolFilter );
078        
079        // create a JMX ObjectName.
080        ObjectName protocolFilterName = new ObjectName( protocolFilter.getClass().getPackage().getName() + 
081            ":type=protocolfilter,name=" + protocolFilter.getClass().getSimpleName() );
082        
083        // register the bean on the MBeanServer.  Without this line, no JMX will happen for
084        // this filter.
085        mBeanServer.registerMBean( protocolFilterMBean, protocolFilterName );
086        
087        // add the protocolFilter to the acceptor, otherwise no filtering of data will happen
088        acceptor.getFilterChain().addLast("protocol", protocolFilter);
089        
090        // get a reference to the filter chain from the acceptor
091        DefaultIoFilterChainBuilder filterChainBuilder = acceptor.getFilterChain();
092        
093        // add an ExecutorFilter to the filter chain.  The preferred order is to put the executor filter
094        // after any protocol filters due to the fact that protocol codecs are generally CPU-bound
095        // which is the same as I/O filters.
096        filterChainBuilder.addLast("threadPool", new ExecutorFilter(Executors.newCachedThreadPool()));
097        
098        // set this NioSocketAcceptor's handler to the ImageServerHandler
099        acceptor.setHandler(handler);
100        
101        // Bind to the specified address.  This kicks off the listening for 
102        // incoming connections
103        acceptor.bind(new InetSocketAddress(PORT));
104        System.out.println("Step 3 server is listenig at port " + PORT);
105    }
106}