1   /*
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3    *  or more contributor license agreements.  See the NOTICE file
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
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.transport.vmpipe;
21  
22  import java.util.concurrent.Semaphore;
23  import java.util.concurrent.TimeUnit;
24  
25  import junit.framework.Assert;
26  import junit.framework.TestCase;
27  
28  import org.apache.mina.core.buffer.IoBuffer;
29  import org.apache.mina.core.future.ConnectFuture;
30  import org.apache.mina.core.service.IoAcceptor;
31  import org.apache.mina.core.service.IoConnector;
32  import org.apache.mina.core.service.IoHandlerAdapter;
33  import org.apache.mina.core.session.IoSession;
34  import org.apache.mina.filter.executor.ExecutorFilter;
35  
36  /**
37   * Makes sure if the order of event is correct.
38   *
39   * @author The Apache MINA Project (dev@mina.apache.org)
40   */
41  public class VmPipeEventOrderTest extends TestCase {
42      public void testServerToClient() throws Exception {
43          IoAcceptor acceptor = new VmPipeAcceptor();
44          IoConnector connector = new VmPipeConnector();
45  
46          acceptor.setHandler(new IoHandlerAdapter() {
47              @Override
48              public void sessionOpened(IoSession session) throws Exception {
49                  session.write("B");
50              }
51  
52              @Override
53              public void messageSent(IoSession session, Object message)
54                      throws Exception {
55                  session.close(true);
56              }
57          });
58  
59          acceptor.bind(new VmPipeAddress(1));
60  
61          final StringBuffer actual = new StringBuffer();
62  
63          connector.setHandler(new IoHandlerAdapter() {
64  
65              @Override
66              public void messageReceived(IoSession session, Object message)
67                      throws Exception {
68                  actual.append(message);
69              }
70  
71              @Override
72              public void sessionClosed(IoSession session) throws Exception {
73                  actual.append("C");
74              }
75  
76              @Override
77              public void sessionOpened(IoSession session) throws Exception {
78                  actual.append("A");
79              }
80  
81          });
82  
83          ConnectFuture future = connector.connect(new VmPipeAddress(1));
84  
85          future.awaitUninterruptibly();
86          future.getSession().getCloseFuture().awaitUninterruptibly();
87          acceptor.dispose();
88  
89          // sessionClosed() might not be invoked yet
90          // even if the connection is closed.
91          while (actual.indexOf("C") < 0) {
92              Thread.yield();
93          }
94  
95          Assert.assertEquals("ABC", actual.toString());
96      }
97  
98      public void testClientToServer() throws Exception {
99          IoAcceptor acceptor = new VmPipeAcceptor();
100         IoConnector connector = new VmPipeConnector();
101 
102         final StringBuffer actual = new StringBuffer();
103 
104         acceptor.setHandler(new IoHandlerAdapter() {
105 
106             @Override
107             public void messageReceived(IoSession session, Object message)
108                     throws Exception {
109                 actual.append(message);
110             }
111 
112             @Override
113             public void sessionClosed(IoSession session) throws Exception {
114                 actual.append("C");
115             }
116 
117             @Override
118             public void sessionOpened(IoSession session) throws Exception {
119                 actual.append("A");
120             }
121 
122         });
123 
124         acceptor.bind(new VmPipeAddress(1));
125 
126         connector.setHandler(new IoHandlerAdapter() {
127             @Override
128             public void sessionOpened(IoSession session) throws Exception {
129                 session.write("B");
130             }
131 
132             @Override
133             public void messageSent(IoSession session, Object message)
134                     throws Exception {
135                 session.close(true);
136             }
137         });
138 
139         ConnectFuture future = connector.connect(new VmPipeAddress(1));
140 
141         future.awaitUninterruptibly();
142         future.getSession().getCloseFuture().awaitUninterruptibly();
143         acceptor.dispose();
144         connector.dispose();
145 
146         // sessionClosed() might not be invoked yet
147         // even if the connection is closed.
148         while (actual.indexOf("C") < 0) {
149             Thread.yield();
150         }
151 
152         Assert.assertEquals("ABC", actual.toString());
153     }
154 
155     public void testSessionCreated() throws Exception {
156         final Semaphore semaphore = new Semaphore(0);
157         final StringBuffer stringBuffer = new StringBuffer();
158         VmPipeAcceptor vmPipeAcceptor = new VmPipeAcceptor();
159         final VmPipeAddress vmPipeAddress = new VmPipeAddress(12345);
160         vmPipeAcceptor.setHandler(new IoHandlerAdapter() {
161             @Override
162             public void sessionCreated(IoSession session) throws Exception {
163                 // pretend we are doing some time-consuming work. For
164                 // performance reasons, you would never want to do time
165                 // consuming work in sessionCreated.
166                 // However, this increases the likelihood of the timing bug.
167                 Thread.sleep(1000);
168                 stringBuffer.append("A");
169             }
170 
171             @Override
172             public void sessionOpened(IoSession session) throws Exception {
173                 stringBuffer.append("B");
174             }
175 
176             @Override
177             public void messageReceived(IoSession session, Object message)
178                     throws Exception {
179                 stringBuffer.append("C");
180             }
181             
182             @Override
183             public void sessionClosed(IoSession session) throws Exception {
184                 stringBuffer.append("D");
185                 semaphore.release();
186             }
187         });
188         vmPipeAcceptor.bind(vmPipeAddress);
189 
190         final VmPipeConnector vmPipeConnector = new VmPipeConnector();
191         vmPipeConnector.getFilterChain().addLast("executor", new ExecutorFilter());
192         vmPipeConnector.setHandler(new IoHandlerAdapter());
193         ConnectFuture connectFuture = vmPipeConnector.connect(vmPipeAddress);
194         connectFuture.awaitUninterruptibly();
195         connectFuture.getSession().write(IoBuffer.wrap(new byte[1]));
196         connectFuture.getSession().close(false).awaitUninterruptibly();
197 
198         semaphore.tryAcquire(1, TimeUnit.SECONDS);
199         vmPipeAcceptor.unbind(vmPipeAddress);
200         Assert.assertEquals(1, connectFuture.getSession().getWrittenBytes());
201         Assert.assertEquals("ABCD", stringBuffer.toString());
202     }
203 }