View Javadoc

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