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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.sumup;
21  
22  import java.net.InetSocketAddress;
23  
24  import org.apache.mina.core.RuntimeIoException;
25  import org.apache.mina.core.future.ConnectFuture;
26  import org.apache.mina.core.session.IoSession;
27  import org.apache.mina.example.sumup.codec.SumUpProtocolCodecFactory;
28  import org.apache.mina.filter.codec.ProtocolCodecFilter;
29  import org.apache.mina.filter.codec.serialization.ObjectSerializationCodecFactory;
30  import org.apache.mina.filter.logging.LoggingFilter;
31  import org.apache.mina.transport.socket.nio.NioSocketConnector;
32  
33  /**
34   * (<strong>Entry Point</strong>) Starts SumUp client.
35   *
36   * @author <a href="http://mina.apache.org">Apache MINA Project</a>
37   */
38  public class Client {
39      private static final String HOSTNAME = "localhost";
40  
41      private static final int PORT = 8080;
42  
43      private static final long CONNECT_TIMEOUT = 30*1000L; // 30 seconds
44  
45      // Set this to false to use object serialization instead of custom codec.
46      private static final boolean USE_CUSTOM_CODEC = true;
47  
48      public static void main(String[] args) throws Throwable {
49          if (args.length == 0) {
50              System.out.println("Please specify the list of any integers");
51              return;
52          }
53  
54          // prepare values to sum up
55          int[] values = new int[args.length];
56          for (int i = 0; i < args.length; i++) {
57              values[i] = Integer.parseInt(args[i]);
58          }
59  
60          NioSocketConnector connector = new NioSocketConnector();
61  
62          // Configure the service.
63          connector.setConnectTimeoutMillis(CONNECT_TIMEOUT);
64          if (USE_CUSTOM_CODEC) {
65              connector.getFilterChain().addLast(
66                      "codec",
67                      new ProtocolCodecFilter(
68                              new SumUpProtocolCodecFactory(false)));
69          } else {
70              connector.getFilterChain().addLast(
71                      "codec",
72                      new ProtocolCodecFilter(
73                              new ObjectSerializationCodecFactory()));
74          }
75          connector.getFilterChain().addLast("logger", new LoggingFilter());
76  
77          connector.setHandler(new ClientSessionHandler(values));
78  
79          IoSession session;
80          for (;;) {
81              try {
82                  ConnectFuture future = connector.connect(new InetSocketAddress(
83                          HOSTNAME, PORT));
84                  future.awaitUninterruptibly();
85                  session = future.getSession();
86                  break;
87              } catch (RuntimeIoException e) {
88                  System.err.println("Failed to connect.");
89                  e.printStackTrace();
90                  Thread.sleep(5000);
91              }
92          }
93  
94          // wait until the summation is done
95          session.getCloseFuture().awaitUninterruptibly();
96          
97          connector.dispose();
98      }
99  }