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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.transport.vmpipe;
21  
22  import java.util.concurrent.BlockingQueue;
23  import java.util.concurrent.LinkedBlockingQueue;
24  import java.util.concurrent.locks.Lock;
25  import java.util.concurrent.locks.ReentrantLock;
26  
27  import org.apache.mina.core.filterchain.IoFilterChain;
28  import org.apache.mina.core.service.DefaultTransportMetadata;
29  import org.apache.mina.core.service.IoHandler;
30  import org.apache.mina.core.service.IoProcessor;
31  import org.apache.mina.core.service.IoService;
32  import org.apache.mina.core.service.IoServiceListenerSupport;
33  import org.apache.mina.core.service.TransportMetadata;
34  import org.apache.mina.core.session.AbstractIoSession;
35  import org.apache.mina.core.session.IoSession;
36  import org.apache.mina.core.write.WriteRequestQueue;
37  
38  /**
39   * A {@link IoSession} for in-VM transport (VM_PIPE).
40   *
41   * @author <a href="http://mina.apache.org">Apache MINA Project</a>
42   */
43  class VmPipeSession extends AbstractIoSession {
44  
45      static final TransportMetadata METADATA = new DefaultTransportMetadata("mina", "vmpipe", false, false,
46              VmPipeAddress.class, VmPipeSessionConfig.class, Object.class);
47  
48      private final IoServiceListenerSupport serviceListeners;
49  
50      private final VmPipeAddress localAddress;
51  
52      private final VmPipeAddress remoteAddress;
53  
54      private final VmPipeAddress serviceAddress;
55  
56      private final VmPipeFilterChain filterChain;
57  
58      private final VmPipeSession remoteSession;
59  
60      private final Lock lock;
61  
62      final BlockingQueue<Object> receivedMessageQueue;
63  
64      /*
65       * Constructor for client-side session.
66       */
67      VmPipeSession(IoService service, IoServiceListenerSupport serviceListeners, VmPipeAddress localAddress,
68              IoHandler handler, VmPipe remoteEntry) {
69          super(service);
70          config = new DefaultVmPipeSessionConfig();
71          this.serviceListeners = serviceListeners;
72          lock = new ReentrantLock();
73          this.localAddress = localAddress;
74          remoteAddress = serviceAddress = remoteEntry.getAddress();
75          filterChain = new VmPipeFilterChain(this);
76          receivedMessageQueue = new LinkedBlockingQueue<Object>();
77  
78          remoteSession = new VmPipeSession(this, remoteEntry);
79      }
80  
81      /*
82       * Constructor for server-side session.
83       */
84      private VmPipeSession(VmPipeSession remoteSession, VmPipe entry) {
85          super(entry.getAcceptor());
86          config = new DefaultVmPipeSessionConfig();
87          serviceListeners = entry.getListeners();
88          lock = remoteSession.lock;
89          localAddress = serviceAddress = remoteSession.remoteAddress;
90          remoteAddress = remoteSession.localAddress;
91          filterChain = new VmPipeFilterChain(this);
92          this.remoteSession = remoteSession;
93          receivedMessageQueue = new LinkedBlockingQueue<Object>();
94      }
95  
96      @Override
97      public IoProcessor<VmPipeSession> getProcessor() {
98          return filterChain.getProcessor();
99      }
100 
101     IoServiceListenerSupport getServiceListeners() {
102         return serviceListeners;
103     }
104 
105     public VmPipeSessionConfig getConfig() {
106         return (VmPipeSessionConfig) config;
107     }
108 
109     public IoFilterChain getFilterChain() {
110         return filterChain;
111     }
112 
113     public VmPipeSession getRemoteSession() {
114         return remoteSession;
115     }
116 
117     public TransportMetadata getTransportMetadata() {
118         return METADATA;
119     }
120 
121     public VmPipeAddress getRemoteAddress() {
122         return remoteAddress;
123     }
124 
125     public VmPipeAddress getLocalAddress() {
126         return localAddress;
127     }
128 
129     @Override
130     public VmPipeAddress getServiceAddress() {
131         return serviceAddress;
132     }
133 
134     void increaseWrittenBytes0(int increment, long currentTime) {
135         super.increaseWrittenBytes(increment, currentTime);
136     }
137 
138     WriteRequestQueue getWriteRequestQueue0() {
139         return super.getWriteRequestQueue();
140     }
141 
142     Lock getLock() {
143         return lock;
144     }
145 }