1 //
2 // ========================================================================
3 // Copyright (c) 1995-2013 Mort Bay Consulting Pty. Ltd.
4 // ------------------------------------------------------------------------
5 // All rights reserved. This program and the accompanying materials
6 // are made available under the terms of the Eclipse Public License v1.0
7 // and Apache License v2.0 which accompanies this distribution.
8 //
9 // The Eclipse Public License is available at
10 // http://www.eclipse.org/legal/epl-v10.html
11 //
12 // The Apache License v2.0 is available at
13 // http://www.opensource.org/licenses/apache2.0.php
14 //
15 // You may elect to redistribute this code under either of these licenses.
16 // ========================================================================
17 //
18
19 package org.eclipse.jetty.http;
20
21 import java.io.IOException;
22 import java.io.InputStream;
23
24 import org.eclipse.jetty.io.Buffer;
25 import org.eclipse.jetty.io.ByteArrayBuffer;
26 import org.eclipse.jetty.util.log.Log;
27 import org.eclipse.jetty.util.log.Logger;
28 import org.eclipse.jetty.util.resource.Resource;
29
30 /* ------------------------------------------------------------ */
31 /** HttpContent.
32 *
33 *
34 */
35 public interface HttpContent
36 {
37 Buffer getContentType();
38 Buffer getLastModified();
39 Buffer getIndirectBuffer();
40 Buffer getDirectBuffer();
41 Buffer getETag();
42 Resource getResource();
43 long getContentLength();
44 InputStream getInputStream() throws IOException;
45 void release();
46
47 /* ------------------------------------------------------------ */
48 /* ------------------------------------------------------------ */
49 /* ------------------------------------------------------------ */
50 public class ResourceAsHttpContent implements HttpContent
51 {
52 private static final Logger LOG = Log.getLogger(ResourceAsHttpContent.class);
53
54 final Resource _resource;
55 final Buffer _mimeType;
56 final int _maxBuffer;
57 final Buffer _etag;
58
59 /* ------------------------------------------------------------ */
60 public ResourceAsHttpContent(final Resource resource, final Buffer mimeType)
61 {
62 this(resource,mimeType,-1,false);
63 }
64
65 /* ------------------------------------------------------------ */
66 public ResourceAsHttpContent(final Resource resource, final Buffer mimeType, int maxBuffer)
67 {
68 this(resource,mimeType,maxBuffer,false);
69 }
70
71 /* ------------------------------------------------------------ */
72 public ResourceAsHttpContent(final Resource resource, final Buffer mimeType, boolean etag)
73 {
74 this(resource,mimeType,-1,etag);
75 }
76
77 /* ------------------------------------------------------------ */
78 public ResourceAsHttpContent(final Resource resource, final Buffer mimeType, int maxBuffer, boolean etag)
79 {
80 _resource=resource;
81 _mimeType=mimeType;
82 _maxBuffer=maxBuffer;
83 _etag=etag?new ByteArrayBuffer(resource.getWeakETag()):null;
84 }
85
86 /* ------------------------------------------------------------ */
87 public Buffer getContentType()
88 {
89 return _mimeType;
90 }
91
92 /* ------------------------------------------------------------ */
93 public Buffer getLastModified()
94 {
95 return null;
96 }
97
98 /* ------------------------------------------------------------ */
99 public Buffer getDirectBuffer()
100 {
101 return null;
102 }
103
104 /* ------------------------------------------------------------ */
105 public Buffer getETag()
106 {
107 return _etag;
108 }
109
110 /* ------------------------------------------------------------ */
111 public Buffer getIndirectBuffer()
112 {
113 InputStream inputStream = null;
114 try
115 {
116 if (_resource.length() <= 0 || _maxBuffer < _resource.length())
117 return null;
118 ByteArrayBuffer buffer = new ByteArrayBuffer((int)_resource.length());
119 inputStream = _resource.getInputStream();
120 buffer.readFrom(inputStream,(int)_resource.length());
121 return buffer;
122 }
123 catch (IOException e)
124 {
125 throw new RuntimeException(e);
126 }
127 finally
128 {
129 if (inputStream != null)
130 {
131 try
132 {
133 inputStream.close();
134 }
135 catch (IOException e)
136 {
137 LOG.warn("Couldn't close inputStream. Possible file handle leak",e);
138 }
139 }
140 }
141 }
142
143 /* ------------------------------------------------------------ */
144 public long getContentLength()
145 {
146 return _resource.length();
147 }
148
149 /* ------------------------------------------------------------ */
150 public InputStream getInputStream() throws IOException
151 {
152 return _resource.getInputStream();
153 }
154
155 /* ------------------------------------------------------------ */
156 public Resource getResource()
157 {
158 return _resource;
159 }
160
161 /* ------------------------------------------------------------ */
162 public void release()
163 {
164 _resource.release();
165 }
166 }
167 }