FavIconHandler


1   /* 
2    * Licensed to the Apache Software Foundation (ASF) under one or more
3    * contributor license agreements.  See the NOTICE file distributed with
4    * this work for additional information regarding copyright ownership.
5    * The ASF licenses this file to You under the Apache License, Version 2.0
6    * (the "License"); you may not use this file except in compliance with
7    * the License.  You may obtain a copy of the License at
8    * 
9    *   http://www.apache.org/licenses/LICENSE-2.0
10   * 
11   * Unless required by applicable law or agreed to in writing, software
12   * distributed  under the  License is distributed on an "AS IS" BASIS,
13   * WITHOUT  WARRANTIES OR CONDITIONS  OF ANY KIND, either  express  or
14   * implied.
15   * 
16   * See the License for the specific language governing permissions and
17   * limitations under the License.
18   */
19  
20  package org.apache.excalibur.instrument.manager.http;
21  
22  import com.sun.image.codec.jpeg.JPEGCodec;
23  import com.sun.image.codec.jpeg.JPEGEncodeParam;
24  import com.sun.image.codec.jpeg.JPEGImageEncoder;
25  
26  import java.awt.Graphics  ;
27  import java.awt.image.BufferedImage  ;
28  import java.io.BufferedInputStream  ;
29  import java.io.IOException  ;
30  import java.io.OutputStream  ;
31  import java.io.UnsupportedEncodingException  ;
32  import java.util.Map  ;
33  
34  import org.apache.excalibur.instrument.manager.http.server.AbstractHTTPURLHandler;
35  import org.apache.excalibur.instrument.manager.http.server.HTTPRedirect;
36  import org.apache.excalibur.instrument.manager.http.server.URLCoder;
37  import org.apache.excalibur.instrument.manager.DefaultInstrumentManager;
38  import org.apache.excalibur.instrument.manager.InstrumentSampleDescriptor;
39  import org.apache.excalibur.instrument.manager.InstrumentSampleSnapshot;
40  import org.apache.excalibur.instrument.manager.NoSuchInstrumentSampleException;
41  
42  /**
43   * Serves up a favicon.ico file.
44   *
45   * @author <a HREF="mailto:dev@avalon.apache.org">Avalon Development Team</a>
46   * @version CVS $Revision: 1.9 $ $Date: 2004/03/06 14:01:28 $
47   * @since 4.1
48   */
49  public class FavIconHandler
50      extends AbstractHTTPURLHandler
51  {
52      /*---------------------------------------------------------------
53       * Constructors
54       *-------------------------------------------------------------*/
55      /**
56       * Creates a new FavIconHandler.
57       */
58      public FavIconHandler()
59      {
60          super( "/favicon.ico", CONTENT_TYPE_IMAGE_X_ICON,
61              InstrumentManagerHTTPConnector.ENCODING );
62      }
63      
64      /*---------------------------------------------------------------
65       * AbstractHandler Methods
66       *-------------------------------------------------------------*/
67      /**
68       * Handles the specified request.
69       *
70       * @param The full path being handled.
71       * @param parameters A Map of the parameters in the request.
72       * @param os The OutputStream to write the result to.
73       */
74      public void doGet( String   path, Map   parameters, OutputStream   os )
75          throws IOException  
76      {
77          String   imageResource = "favicon.ico";
78          BufferedInputStream   is =
79              new BufferedInputStream  ( getClass().getResourceAsStream( imageResource ) );
80          byte[] favIcon;
81          try {
82              favIcon = new byte[is.available()];
83              is.read( favIcon, 0, favIcon.length );
84          } finally {
85              is.close();
86          }
87          // Now write the image out to the client.
88          os.write( favIcon );
89      }
90  }
91  
92
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