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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.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 }