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1   /*
2    *   Licensed to the Apache Software Foundation (ASF) under one
3    *   or more contributor license agreements.  See the NOTICE file
4    *   distributed with this work for additional information
5    *   regarding copyright ownership.  The ASF licenses this file
6    *   to you under the Apache License, Version 2.0 (the
7    *   "License"); you may not use this file except in compliance
8    *   with the License.  You may obtain a copy of the License at
9    *
10   *     http://www.apache.org/licenses/LICENSE-2.0
11   *
12   *   Unless required by applicable law or agreed to in writing,
13   *   software distributed under the License is distributed on an
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.step2.server;
21  
22  import java.io.IOException;
23  import java.net.InetSocketAddress;
24  import java.util.concurrent.Executors;
25  
26  import org.apache.mina.core.filterchain.DefaultIoFilterChainBuilder;
27  import org.apache.mina.example.imagine.step1.codec.ImageCodecFactory;
28  import org.apache.mina.example.imagine.step1.server.ImageServerIoHandler;
29  import org.apache.mina.filter.codec.ProtocolCodecFilter;
30  import org.apache.mina.filter.executor.ExecutorFilter;
31  import org.apache.mina.transport.socket.nio.NioSocketAcceptor;
32  
33  /**
34   * entry point for the server used in the tutorial on protocol codecs
35   *
36   * @author <a href="http://mina.apache.org">Apache MINA Project</a>
37   */
38  
39  public class ImageServer {
40      public static final int PORT = 33789;
41  
42      public static void main(String[] args) throws IOException {
43          // Create a class that handles sessions, incoming and outgoing data
44          ImageServerIoHandler handler = new ImageServerIoHandler();
45          
46          // This socket acceptor will handle incoming connections
47          NioSocketAcceptor acceptor = new NioSocketAcceptor();
48          
49          // add an IoFilter .  This class is responsible for converting the incoming and 
50          // outgoing raw data to ImageRequest and ImageResponse objects
51          acceptor.getFilterChain().addLast("protocol", new ProtocolCodecFilter(new ImageCodecFactory(false)));
52          
53          // get a reference to the filter chain from the acceptor
54          DefaultIoFilterChainBuilder filterChainBuilder = acceptor.getFilterChain();
55          
56          // add an ExecutorFilter to the filter chain.  The preferred order is to put the executor filter
57          // after any protocol filters due to the fact that protocol codecs are generally CPU-bound
58          // which is the same as I/O filters.
59          filterChainBuilder.addLast("threadPool", new ExecutorFilter(Executors.newCachedThreadPool()));
60          
61          // set this NioSocketAcceptor's handler to the ImageServerHandler
62          acceptor.setHandler(handler);
63          
64          // Bind to the specified address.  This kicks off the listening for 
65          // incoming connections
66          acceptor.bind(new InetSocketAddress(PORT));
67          System.out.println("Step 2 server is listenig at port " + PORT);
68      }
69  }