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1   /*
2    *   Licensed to the Apache Software Foundation (ASF) under one
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4    *   distributed with this work for additional information
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6    *   to you under the Apache License, Version 2.0 (the
7    *   "License"); you may not use this file except in compliance
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9    *
10   *     http://www.apache.org/licenses/LICENSE-2.0
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14   *   "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
15   *   KIND, either express or implied.  See the License for the
16   *   specific language governing permissions and limitations
17   *   under the License.
18   *
19   */
20  package org.apache.mina.example.imagine.step3.server;
21  
22  import java.lang.management.ManagementFactory;
23  import java.net.InetSocketAddress;
24  import java.util.concurrent.Executors;
25  
26  import javax.management.MBeanServer;
27  import javax.management.ObjectName;
28  
29  import org.apache.mina.core.filterchain.DefaultIoFilterChainBuilder;
30  import org.apache.mina.example.imagine.step1.codec.ImageCodecFactory;
31  import org.apache.mina.filter.codec.ProtocolCodecFilter;
32  import org.apache.mina.filter.executor.ExecutorFilter;
33  import org.apache.mina.integration.jmx.IoFilterMBean;
34  import org.apache.mina.integration.jmx.IoServiceMBean;
35  import org.apache.mina.transport.socket.nio.NioSocketAcceptor;
36  
37  /**
38   * entry point for the server used in the tutorial on protocol codecs
39   *
40   * @author <a href="http://mina.apache.org">Apache MINA Project</a>
41   */
42  
43  public class ImageServer {
44      public static final int PORT = 33789;
45  
46      public static void main(String[] args) throws Exception {
47          
48          // create a JMX MBean Server server instance
49          MBeanServer mBeanServer = ManagementFactory.getPlatformMBeanServer();
50          
51          // Create a class that handles sessions, incoming and outgoing data.  For
52          // this step, we will pass in the MBeanServer so that sessions can be 
53          // registered on the MBeanServer.
54          ImageServerIoHandler handler = new ImageServerIoHandler( mBeanServer );
55          
56          // This socket acceptor will handle incoming connections
57          NioSocketAcceptor acceptor = new NioSocketAcceptor();
58          
59          // create a JMX-aware bean that wraps a MINA IoService object.  In this
60          // case, a NioSocketAcceptor.  
61          IoServiceMBean acceptorMBean = new IoServiceMBean( acceptor );
62          
63          // create a JMX ObjectName.  This has to be in a specific format.  
64          ObjectName acceptorName = new ObjectName( acceptor.getClass().getPackage().getName() + 
65              ":type=acceptor,name=" + acceptor.getClass().getSimpleName());
66          
67          // register the bean on the MBeanServer.  Without this line, no JMX will happen for
68          // this acceptor.
69          mBeanServer.registerMBean( acceptorMBean, acceptorName );
70          
71          // add an IoFilter .  This class is responsible for converting the incoming and 
72          // outgoing raw data to ImageRequest and ImageResponse objects
73          ProtocolCodecFilter protocolFilter = new ProtocolCodecFilter(new ImageCodecFactory(false));
74          
75          // create a JMX-aware bean that wraps a MINA IoFilter object.  In this
76          // case, a ProtocolCodecFilter
77          IoFilterMBean protocolFilterMBean = new IoFilterMBean( protocolFilter );
78          
79          // create a JMX ObjectName.
80          ObjectName protocolFilterName = new ObjectName( protocolFilter.getClass().getPackage().getName() + 
81              ":type=protocolfilter,name=" + protocolFilter.getClass().getSimpleName() );
82          
83          // register the bean on the MBeanServer.  Without this line, no JMX will happen for
84          // this filter.
85          mBeanServer.registerMBean( protocolFilterMBean, protocolFilterName );
86          
87          // add the protocolFilter to the acceptor, otherwise no filtering of data will happen
88          acceptor.getFilterChain().addLast("protocol", protocolFilter);
89          
90          // get a reference to the filter chain from the acceptor
91          DefaultIoFilterChainBuilder filterChainBuilder = acceptor.getFilterChain();
92          
93          // add an ExecutorFilter to the filter chain.  The preferred order is to put the executor filter
94          // after any protocol filters due to the fact that protocol codecs are generally CPU-bound
95          // which is the same as I/O filters.
96          filterChainBuilder.addLast("threadPool", new ExecutorFilter(Executors.newCachedThreadPool()));
97          
98          // set this NioSocketAcceptor's handler to the ImageServerHandler
99          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 }