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1   // ========================================================================
2   // Copyright (c) 2011 Intalio, Inc.
3   // ------------------------------------------------------------------------
4   // All rights reserved. This program and the accompanying materials
5   // are made available under the terms of the Eclipse Public License v1.0
6   // and Apache License v2.0 which accompanies this distribution.
7   // The Eclipse Public License is available at
8   // http://www.eclipse.org/legal/epl-v10.html
9   // The Apache License v2.0 is available at
10  // http://www.opensource.org/licenses/apache2.0.php
11  // You may elect to redistribute this code under either of these licenses.
12  // ========================================================================
13  
14  package org.eclipse.jetty.io.nio;
15  
16  import java.io.IOException;
17  import java.nio.ByteBuffer;
18  import java.nio.channels.SelectionKey;
19  import java.nio.channels.SocketChannel;
20  import java.util.List;
21  
22  import org.eclipse.jetty.io.Buffer;
23  import org.eclipse.jetty.io.NetworkTrafficListener;
24  import org.eclipse.jetty.util.log.Log;
25  import org.eclipse.jetty.util.log.Logger;
26  
27  public class NetworkTrafficSelectChannelEndPoint extends SelectChannelEndPoint
28  {
29      private static final Logger LOG = Log.getLogger(NetworkTrafficSelectChannelEndPoint.class);
30  
31      private final List<NetworkTrafficListener> listeners;
32  
33      public NetworkTrafficSelectChannelEndPoint(SocketChannel channel, SelectorManager.SelectSet selectSet, SelectionKey key, int maxIdleTime, List<NetworkTrafficListener> listeners) throws IOException
34      {
35          super(channel, selectSet, key, maxIdleTime);
36          this.listeners = listeners;
37      }
38  
39      @Override
40      public int fill(Buffer buffer) throws IOException
41      {
42          int read = super.fill(buffer);
43          notifyIncoming(buffer, read);
44          return read;
45      }
46  
47      @Override
48      public int flush(Buffer buffer) throws IOException
49      {
50          int position = buffer.getIndex();
51          int written = super.flush(buffer);
52          notifyOutgoing(buffer, position, written);
53          return written;
54      }
55  
56      @Override
57      protected int gatheringFlush(Buffer header, ByteBuffer bbuf0, Buffer buffer, ByteBuffer bbuf1) throws IOException
58      {
59          int headerPosition = header.getIndex();
60          int headerLength = header.length();
61          int bufferPosition = buffer.getIndex();
62          int written = super.gatheringFlush(header, bbuf0, buffer,bbuf1);
63          notifyOutgoing(header, headerPosition, written > headerLength ? headerLength : written);
64          notifyOutgoing(buffer, bufferPosition, written > headerLength ? written - headerLength : 0);
65          return written;
66      }
67  
68      public void notifyOpened()
69      {
70          if (listeners != null && !listeners.isEmpty())
71          {
72              for (NetworkTrafficListener listener : listeners)
73              {
74                  try
75                  {
76                      listener.opened(_socket);
77                  }
78                  catch (Exception x)
79                  {
80                      LOG.warn(x);
81                  }
82              }
83          }
84      }
85  
86      public void notifyIncoming(Buffer buffer, int read)
87      {
88          if (listeners != null && !listeners.isEmpty() && read > 0)
89          {
90              for (NetworkTrafficListener listener : listeners)
91              {
92                  try
93                  {
94                      Buffer view = buffer.asReadOnlyBuffer();
95                      listener.incoming(_socket, view);
96                  }
97                  catch (Exception x)
98                  {
99                      LOG.warn(x);
100                 }
101             }
102         }
103     }
104 
105     public void notifyOutgoing(Buffer buffer, int position, int written)
106     {
107         if (listeners != null && !listeners.isEmpty() && written > 0)
108         {
109             for (NetworkTrafficListener listener : listeners)
110             {
111                 try
112                 {
113                     Buffer view = buffer.asReadOnlyBuffer();
114                     view.setGetIndex(position);
115                     view.setPutIndex(position + written);
116                     listener.outgoing(_socket, view);
117                 }
118                 catch (Exception x)
119                 {
120                     LOG.warn(x);
121                 }
122             }
123         }
124     }
125 
126     public void notifyClosed()
127     {
128         if (listeners != null && !listeners.isEmpty())
129         {
130             for (NetworkTrafficListener listener : listeners)
131             {
132                 try
133                 {
134                     listener.closed(_socket);
135                 }
136                 catch (Exception x)
137                 {
138                     LOG.warn(x);
139                 }
140             }
141         }
142     }
143 }