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annotate src/org/eclipse/jetty/server/ResourceCache.java @ 811:1bedcd0ec275

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remove more session code
author Franklin Schmidt <fschmidt@gmail.com>
date Thu, 08 Sep 2016 18:37:55 -0600
parents 3428c60d7cfc
children
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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1 //
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2 // ========================================================================
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3 // Copyright (c) 1995-2014 Mort Bay Consulting Pty. Ltd.
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4 // ------------------------------------------------------------------------
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5 // All rights reserved. This program and the accompanying materials
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6 // are made available under the terms of the Eclipse Public License v1.0
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7 // and Apache License v2.0 which accompanies this distribution.
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8 //
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9 // The Eclipse Public License is available at
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10 // http://www.eclipse.org/legal/epl-v10.html
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11 //
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12 // The Apache License v2.0 is available at
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13 // http://www.opensource.org/licenses/apache2.0.php
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14 //
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15 // You may elect to redistribute this code under either of these licenses.
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16 // ========================================================================
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17 //
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18
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19 package org.eclipse.jetty.server;
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20
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21 import java.io.ByteArrayInputStream;
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22 import java.io.IOException;
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23 import java.io.InputStream;
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24 import java.util.Comparator;
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25 import java.util.SortedSet;
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26 import java.util.TreeSet;
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27 import java.util.concurrent.ConcurrentHashMap;
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28 import java.util.concurrent.ConcurrentMap;
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29 import java.util.concurrent.atomic.AtomicInteger;
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30 import java.util.concurrent.atomic.AtomicReference;
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31
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32 import org.eclipse.jetty.http.HttpContent;
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33 import org.eclipse.jetty.http.HttpContent.ResourceAsHttpContent;
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34 import org.eclipse.jetty.http.HttpFields;
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35 import org.eclipse.jetty.http.MimeTypes;
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36 import org.eclipse.jetty.io.Buffer;
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37 import org.eclipse.jetty.io.ByteArrayBuffer;
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38 import org.eclipse.jetty.io.View;
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39 import org.eclipse.jetty.io.nio.DirectNIOBuffer;
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40 import org.eclipse.jetty.io.nio.IndirectNIOBuffer;
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41 import org.eclipse.jetty.util.log.Log;
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42 import org.eclipse.jetty.util.log.Logger;
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43 import org.eclipse.jetty.util.resource.Resource;
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44 import org.eclipse.jetty.util.resource.ResourceFactory;
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45
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46
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47 /* ------------------------------------------------------------ */
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48 /**
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49 *
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50 */
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51 public class ResourceCache
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52 {
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53 private static final Logger LOG = Log.getLogger(ResourceCache.class);
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54
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55 private final ConcurrentMap<String,Content> _cache;
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56 private final AtomicInteger _cachedSize;
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57 private final AtomicInteger _cachedFiles;
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58 private final ResourceFactory _factory;
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59 private final ResourceCache _parent;
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60 private final MimeTypes _mimeTypes;
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61 private final boolean _etags;
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62
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63 private boolean _useFileMappedBuffer=true;
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64 private int _maxCachedFileSize =4*1024*1024;
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65 private int _maxCachedFiles=2048;
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66 private int _maxCacheSize =32*1024*1024;
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67
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68 /* ------------------------------------------------------------ */
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69 /** Constructor.
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70 * @param mimeTypes Mimetype to use for meta data
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71 */
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72 public ResourceCache(ResourceCache parent, ResourceFactory factory, MimeTypes mimeTypes,boolean useFileMappedBuffer,boolean etags)
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73 {
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74 _factory = factory;
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75 _cache=new ConcurrentHashMap<String,Content>();
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76 _cachedSize=new AtomicInteger();
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77 _cachedFiles=new AtomicInteger();
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78 _mimeTypes=mimeTypes;
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79 _parent=parent;
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80 _etags=etags;
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81 _useFileMappedBuffer=useFileMappedBuffer;
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82 }
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83
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84 /* ------------------------------------------------------------ */
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85 public int getCachedSize()
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86 {
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87 return _cachedSize.get();
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88 }
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89
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90 /* ------------------------------------------------------------ */
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91 public int getCachedFiles()
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92 {
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93 return _cachedFiles.get();
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94 }
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95
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96 /* ------------------------------------------------------------ */
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97 public int getMaxCachedFileSize()
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98 {
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99 return _maxCachedFileSize;
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100 }
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101
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102 /* ------------------------------------------------------------ */
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103 public void setMaxCachedFileSize(int maxCachedFileSize)
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104 {
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105 _maxCachedFileSize = maxCachedFileSize;
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106 shrinkCache();
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107 }
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108
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109 /* ------------------------------------------------------------ */
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110 public int getMaxCacheSize()
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111 {
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112 return _maxCacheSize;
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113 }
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114
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115 /* ------------------------------------------------------------ */
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116 public void setMaxCacheSize(int maxCacheSize)
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117 {
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118 _maxCacheSize = maxCacheSize;
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119 shrinkCache();
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120 }
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121
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122 /* ------------------------------------------------------------ */
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123 /**
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124 * @return Returns the maxCachedFiles.
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125 */
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126 public int getMaxCachedFiles()
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127 {
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128 return _maxCachedFiles;
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129 }
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130
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131 /* ------------------------------------------------------------ */
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132 /**
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133 * @param maxCachedFiles The maxCachedFiles to set.
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134 */
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135 public void setMaxCachedFiles(int maxCachedFiles)
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136 {
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137 _maxCachedFiles = maxCachedFiles;
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138 shrinkCache();
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139 }
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140
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141 /* ------------------------------------------------------------ */
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142 public boolean isUseFileMappedBuffer()
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143 {
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144 return _useFileMappedBuffer;
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145 }
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146
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147 /* ------------------------------------------------------------ */
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148 public void setUseFileMappedBuffer(boolean useFileMappedBuffer)
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149 {
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150 _useFileMappedBuffer = useFileMappedBuffer;
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151 }
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152
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153 /* ------------------------------------------------------------ */
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154 public void flushCache()
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155 {
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156 if (_cache!=null)
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157 {
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158 while (_cache.size()>0)
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159 {
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160 for (String path : _cache.keySet())
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161 {
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162 Content content = _cache.remove(path);
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163 if (content!=null)
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164 content.invalidate();
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165 }
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166 }
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167 }
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168 }
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169
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170 /* ------------------------------------------------------------ */
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171 /** Get a Entry from the cache.
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172 * Get either a valid entry object or create a new one if possible.
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173 *
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174 * @param pathInContext The key into the cache
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175 * @return The entry matching <code>pathInContext</code>, or a new entry
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176 * if no matching entry was found. If the content exists but is not cachable,
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177 * then a {@link ResourceAsHttpContent} instance is return. If
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178 * the resource does not exist, then null is returned.
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179 * @throws IOException Problem loading the resource
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180 */
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181 public HttpContent lookup(String pathInContext)
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182 throws IOException
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183 {
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184 // Is the content in this cache?
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185 Content content =_cache.get(pathInContext);
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186 if (content!=null && (content).isValid())
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187 return content;
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188
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189 // try loading the content from our factory.
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190 Resource resource=_factory.getResource(pathInContext);
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191 HttpContent loaded = load(pathInContext,resource);
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192 if (loaded!=null)
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193 return loaded;
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194
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195 // Is the content in the parent cache?
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196 if (_parent!=null)
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197 {
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198 HttpContent httpContent=_parent.lookup(pathInContext);
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199 if (httpContent!=null)
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200 return httpContent;
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201 }
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202
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203 return null;
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204 }
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205
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206 /* ------------------------------------------------------------ */
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207 /**
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208 * @param resource
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209 * @return True if the resource is cacheable. The default implementation tests the cache sizes.
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210 */
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211 protected boolean isCacheable(Resource resource)
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212 {
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213 long len = resource.length();
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214
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215 // Will it fit in the cache?
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216 return (len>0 && len<_maxCachedFileSize && len<_maxCacheSize);
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217 }
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218
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219 /* ------------------------------------------------------------ */
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220 private HttpContent load(String pathInContext, Resource resource)
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221 throws IOException
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222 {
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223 Content content=null;
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224
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225 if (resource==null || !resource.exists())
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226 return null;
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227
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228 // Will it fit in the cache?
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229 if (!resource.isDirectory() && isCacheable(resource))
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230 {
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231 // Create the Content (to increment the cache sizes before adding the content
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232 content = new Content(pathInContext,resource);
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233
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234 // reduce the cache to an acceptable size.
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235 shrinkCache();
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236
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237 // Add it to the cache.
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238 Content added = _cache.putIfAbsent(pathInContext,content);
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239 if (added!=null)
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240 {
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241 content.invalidate();
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242 content=added;
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243 }
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244
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245 return content;
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246 }
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247
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248 return new HttpContent.ResourceAsHttpContent(resource,_mimeTypes.getMimeByExtension(resource.toString()),getMaxCachedFileSize(),_etags);
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249
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250 }
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251
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252 /* ------------------------------------------------------------ */
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253 private void shrinkCache()
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254 {
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255 // While we need to shrink
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256 while (_cache.size()>0 && (_cachedFiles.get()>_maxCachedFiles || _cachedSize.get()>_maxCacheSize))
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257 {
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258 // Scan the entire cache and generate an ordered list by last accessed time.
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259 SortedSet<Content> sorted= new TreeSet<Content>(
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260 new Comparator<Content>()
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261 {
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262 public int compare(Content c1, Content c2)
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263 {
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264 if (c1._lastAccessed<c2._lastAccessed)
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265 return -1;
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266
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267 if (c1._lastAccessed>c2._lastAccessed)
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268 return 1;
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269
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270 if (c1._length<c2._length)
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271 return -1;
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272
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273 return c1._key.compareTo(c2._key);
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274 }
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275 });
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276 for (Content content : _cache.values())
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277 sorted.add(content);
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278
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279 // Invalidate least recently used first
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280 for (Content content : sorted)
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281 {
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282 if (_cachedFiles.get()<=_maxCachedFiles && _cachedSize.get()<=_maxCacheSize)
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283 break;
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284 if (content==_cache.remove(content.getKey()))
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285 content.invalidate();
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286 }
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287 }
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288 }
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289
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290 /* ------------------------------------------------------------ */
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291 protected Buffer getIndirectBuffer(Resource resource)
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292 {
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293 try
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294 {
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295 int len=(int)resource.length();
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296 if (len<0)
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297 {
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298 LOG.warn("invalid resource: "+String.valueOf(resource)+" "+len);
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299 return null;
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300 }
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301 Buffer buffer = new IndirectNIOBuffer(len);
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302 InputStream is = resource.getInputStream();
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303 buffer.readFrom(is,len);
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304 is.close();
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305 return buffer;
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306 }
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307 catch(IOException e)
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308 {
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309 LOG.warn(e);
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310 return null;
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311 }
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312 }
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313
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314 /* ------------------------------------------------------------ */
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315 protected Buffer getDirectBuffer(Resource resource)
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316 {
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317 try
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318 {
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319 if (_useFileMappedBuffer && resource.getFile()!=null)
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320 return new DirectNIOBuffer(resource.getFile());
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321
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322 int len=(int)resource.length();
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323 if (len<0)
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324 {
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325 LOG.warn("invalid resource: "+String.valueOf(resource)+" "+len);
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326 return null;
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327 }
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328 Buffer buffer = new DirectNIOBuffer(len);
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329 InputStream is = resource.getInputStream();
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330 buffer.readFrom(is,len);
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331 is.close();
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332 return buffer;
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333 }
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334 catch(IOException e)
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335 {
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336 LOG.warn(e);
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337 return null;
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parents:
diff changeset
338 }
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parents:
diff changeset
339 }
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parents:
diff changeset
340
3428c60d7cfc replace jetty jars with source
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parents:
diff changeset
341 /* ------------------------------------------------------------ */
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parents:
diff changeset
342 @Override
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parents:
diff changeset
343 public String toString()
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parents:
diff changeset
344 {
3428c60d7cfc replace jetty jars with source
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parents:
diff changeset
345 return "ResourceCache["+_parent+","+_factory+"]@"+hashCode();
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parents:
diff changeset
346 }
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parents:
diff changeset
347
3428c60d7cfc replace jetty jars with source
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parents:
diff changeset
348 /* ------------------------------------------------------------ */
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parents:
diff changeset
349 /* ------------------------------------------------------------ */
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parents:
diff changeset
350 /** MetaData associated with a context Resource.
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parents:
diff changeset
351 */
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parents:
diff changeset
352 public class Content implements HttpContent
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parents:
diff changeset
353 {
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parents:
diff changeset
354 final Resource _resource;
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parents:
diff changeset
355 final int _length;
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parents:
diff changeset
356 final String _key;
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parents:
diff changeset
357 final long _lastModified;
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parents:
diff changeset
358 final Buffer _lastModifiedBytes;
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parents:
diff changeset
359 final Buffer _contentType;
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parents:
diff changeset
360 final Buffer _etagBuffer;
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parents:
diff changeset
361
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parents:
diff changeset
362 volatile long _lastAccessed;
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parents:
diff changeset
363 AtomicReference<Buffer> _indirectBuffer=new AtomicReference<Buffer>();
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parents:
diff changeset
364 AtomicReference<Buffer> _directBuffer=new AtomicReference<Buffer>();
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parents:
diff changeset
365
3428c60d7cfc replace jetty jars with source
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parents:
diff changeset
366 /* ------------------------------------------------------------ */
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parents:
diff changeset
367 Content(String pathInContext,Resource resource)
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parents:
diff changeset
368 {
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diff changeset
369 _key=pathInContext;
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parents:
diff changeset
370 _resource=resource;
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parents:
diff changeset
371
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parents:
diff changeset
372 _contentType=_mimeTypes.getMimeByExtension(_resource.toString());
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parents:
diff changeset
373 boolean exists=resource.exists();
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parents:
diff changeset
374 _lastModified=exists?resource.lastModified():-1;
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parents:
diff changeset
375 _lastModifiedBytes=_lastModified<0?null:new ByteArrayBuffer(HttpFields.formatDate(_lastModified));
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parents:
diff changeset
376
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parents:
diff changeset
377 _length=exists?(int)resource.length():0;
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parents:
diff changeset
378 _cachedSize.addAndGet(_length);
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parents:
diff changeset
379 _cachedFiles.incrementAndGet();
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parents:
diff changeset
380 _lastAccessed=System.currentTimeMillis();
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parents:
diff changeset
381
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parents:
diff changeset
382 _etagBuffer=_etags?new ByteArrayBuffer(resource.getWeakETag()):null;
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parents:
diff changeset
383 }
3428c60d7cfc replace jetty jars with source
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parents:
diff changeset
384
3428c60d7cfc replace jetty jars with source
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parents:
diff changeset
385
3428c60d7cfc replace jetty jars with source
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parents:
diff changeset
386 /* ------------------------------------------------------------ */
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parents:
diff changeset
387 public String getKey()
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parents:
diff changeset
388 {
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parents:
diff changeset
389 return _key;
3428c60d7cfc replace jetty jars with source
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parents:
diff changeset
390 }
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Franklin Schmidt <fschmidt@gmail.com>
parents:
diff changeset
391
3428c60d7cfc replace jetty jars with source
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parents:
diff changeset
392 /* ------------------------------------------------------------ */
3428c60d7cfc replace jetty jars with source
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parents:
diff changeset
393 public boolean isCached()
3428c60d7cfc replace jetty jars with source
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parents:
diff changeset
394 {
3428c60d7cfc replace jetty jars with source
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parents:
diff changeset
395 return _key!=null;
3428c60d7cfc replace jetty jars with source
Franklin Schmidt <fschmidt@gmail.com>
parents:
diff changeset
396 }
3428c60d7cfc replace jetty jars with source
Franklin Schmidt <fschmidt@gmail.com>
parents:
diff changeset
397
3428c60d7cfc replace jetty jars with source
Franklin Schmidt <fschmidt@gmail.com>
parents:
diff changeset
398 /* ------------------------------------------------------------ */
3428c60d7cfc replace jetty jars with source
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parents:
diff changeset
399 public boolean isMiss()
3428c60d7cfc replace jetty jars with source
Franklin Schmidt <fschmidt@gmail.com>
parents:
diff changeset
400 {
3428c60d7cfc replace jetty jars with source
Franklin Schmidt <fschmidt@gmail.com>
parents:
diff changeset
401 return false;
3428c60d7cfc replace jetty jars with source
Franklin Schmidt <fschmidt@gmail.com>
parents:
diff changeset
402 }
3428c60d7cfc replace jetty jars with source
Franklin Schmidt <fschmidt@gmail.com>
parents:
diff changeset
403
3428c60d7cfc replace jetty jars with source
Franklin Schmidt <fschmidt@gmail.com>
parents:
diff changeset
404 /* ------------------------------------------------------------ */
3428c60d7cfc replace jetty jars with source
Franklin Schmidt <fschmidt@gmail.com>
parents:
diff changeset
405 public Resource getResource()
3428c60d7cfc replace jetty jars with source
Franklin Schmidt <fschmidt@gmail.com>
parents:
diff changeset
406 {
3428c60d7cfc replace jetty jars with source
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parents:
diff changeset
407 return _resource;
3428c60d7cfc replace jetty jars with source
Franklin Schmidt <fschmidt@gmail.com>
parents:
diff changeset
408 }
3428c60d7cfc replace jetty jars with source
Franklin Schmidt <fschmidt@gmail.com>
parents:
diff changeset
409
3428c60d7cfc replace jetty jars with source
Franklin Schmidt <fschmidt@gmail.com>
parents:
diff changeset
410 /* ------------------------------------------------------------ */
3428c60d7cfc replace jetty jars with source
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parents:
diff changeset
411 public Buffer getETag()
3428c60d7cfc replace jetty jars with source
Franklin Schmidt <fschmidt@gmail.com>
parents:
diff changeset
412 {
3428c60d7cfc replace jetty jars with source
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parents:
diff changeset
413 return _etagBuffer;
3428c60d7cfc replace jetty jars with source
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parents:
diff changeset
414 }
3428c60d7cfc replace jetty jars with source
Franklin Schmidt <fschmidt@gmail.com>
parents:
diff changeset
415
3428c60d7cfc replace jetty jars with source
Franklin Schmidt <fschmidt@gmail.com>
parents:
diff changeset
416 /* ------------------------------------------------------------ */
3428c60d7cfc replace jetty jars with source
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parents:
diff changeset
417 boolean isValid()
3428c60d7cfc replace jetty jars with source
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parents:
diff changeset
418 {
3428c60d7cfc replace jetty jars with source
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parents:
diff changeset
419 if (_lastModified==_resource.lastModified() && _length==_resource.length())
3428c60d7cfc replace jetty jars with source
Franklin Schmidt <fschmidt@gmail.com>
parents:
diff changeset
420 {
3428c60d7cfc replace jetty jars with source
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parents:
diff changeset
421 _lastAccessed=System.currentTimeMillis();
3428c60d7cfc replace jetty jars with source
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parents:
diff changeset
422 return true;
3428c60d7cfc replace jetty jars with source
Franklin Schmidt <fschmidt@gmail.com>
parents:
diff changeset
423 }
3428c60d7cfc replace jetty jars with source
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parents:
diff changeset
424
3428c60d7cfc replace jetty jars with source
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parents:
diff changeset
425 if (this==_cache.remove(_key))
3428c60d7cfc replace jetty jars with source
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parents:
diff changeset
426 invalidate();
3428c60d7cfc replace jetty jars with source
Franklin Schmidt <fschmidt@gmail.com>
parents:
diff changeset
427 return false;
3428c60d7cfc replace jetty jars with source
Franklin Schmidt <fschmidt@gmail.com>
parents:
diff changeset
428 }
3428c60d7cfc replace jetty jars with source
Franklin Schmidt <fschmidt@gmail.com>
parents:
diff changeset
429
3428c60d7cfc replace jetty jars with source
Franklin Schmidt <fschmidt@gmail.com>
parents:
diff changeset
430 /* ------------------------------------------------------------ */
3428c60d7cfc replace jetty jars with source
Franklin Schmidt <fschmidt@gmail.com>
parents:
diff changeset
431 protected void invalidate()
3428c60d7cfc replace jetty jars with source
Franklin Schmidt <fschmidt@gmail.com>
parents:
diff changeset
432 {
3428c60d7cfc replace jetty jars with source
Franklin Schmidt <fschmidt@gmail.com>
parents:
diff changeset
433 // Invalidate it
3428c60d7cfc replace jetty jars with source
Franklin Schmidt <fschmidt@gmail.com>
parents:
diff changeset
434 _cachedSize.addAndGet(-_length);
3428c60d7cfc replace jetty jars with source
Franklin Schmidt <fschmidt@gmail.com>
parents:
diff changeset
435 _cachedFiles.decrementAndGet();
3428c60d7cfc replace jetty jars with source
Franklin Schmidt <fschmidt@gmail.com>
parents:
diff changeset
436 _resource.release();
3428c60d7cfc replace jetty jars with source
Franklin Schmidt <fschmidt@gmail.com>
parents:
diff changeset
437 }
3428c60d7cfc replace jetty jars with source
Franklin Schmidt <fschmidt@gmail.com>
parents:
diff changeset
438
3428c60d7cfc replace jetty jars with source
Franklin Schmidt <fschmidt@gmail.com>
parents:
diff changeset
439 /* ------------------------------------------------------------ */
3428c60d7cfc replace jetty jars with source
Franklin Schmidt <fschmidt@gmail.com>
parents:
diff changeset
440 public Buffer getLastModified()
3428c60d7cfc replace jetty jars with source
Franklin Schmidt <fschmidt@gmail.com>
parents:
diff changeset
441 {
3428c60d7cfc replace jetty jars with source
Franklin Schmidt <fschmidt@gmail.com>
parents:
diff changeset
442 return _lastModifiedBytes;
3428c60d7cfc replace jetty jars with source
Franklin Schmidt <fschmidt@gmail.com>
parents:
diff changeset
443 }
3428c60d7cfc replace jetty jars with source
Franklin Schmidt <fschmidt@gmail.com>
parents:
diff changeset
444
3428c60d7cfc replace jetty jars with source
Franklin Schmidt <fschmidt@gmail.com>
parents:
diff changeset
445 /* ------------------------------------------------------------ */
3428c60d7cfc replace jetty jars with source
Franklin Schmidt <fschmidt@gmail.com>
parents:
diff changeset
446 public Buffer getContentType()
3428c60d7cfc replace jetty jars with source
Franklin Schmidt <fschmidt@gmail.com>
parents:
diff changeset
447 {
3428c60d7cfc replace jetty jars with source
Franklin Schmidt <fschmidt@gmail.com>
parents:
diff changeset
448 return _contentType;
3428c60d7cfc replace jetty jars with source
Franklin Schmidt <fschmidt@gmail.com>
parents:
diff changeset
449 }
3428c60d7cfc replace jetty jars with source
Franklin Schmidt <fschmidt@gmail.com>
parents:
diff changeset
450
3428c60d7cfc replace jetty jars with source
Franklin Schmidt <fschmidt@gmail.com>
parents:
diff changeset
451 /* ------------------------------------------------------------ */
3428c60d7cfc replace jetty jars with source
Franklin Schmidt <fschmidt@gmail.com>
parents:
diff changeset
452 public void release()
3428c60d7cfc replace jetty jars with source
Franklin Schmidt <fschmidt@gmail.com>
parents:
diff changeset
453 {
3428c60d7cfc replace jetty jars with source
Franklin Schmidt <fschmidt@gmail.com>
parents:
diff changeset
454 // don't release while cached. Release when invalidated.
3428c60d7cfc replace jetty jars with source
Franklin Schmidt <fschmidt@gmail.com>
parents:
diff changeset
455 }
3428c60d7cfc replace jetty jars with source
Franklin Schmidt <fschmidt@gmail.com>
parents:
diff changeset
456
3428c60d7cfc replace jetty jars with source
Franklin Schmidt <fschmidt@gmail.com>
parents:
diff changeset
457 /* ------------------------------------------------------------ */
3428c60d7cfc replace jetty jars with source
Franklin Schmidt <fschmidt@gmail.com>
parents:
diff changeset
458 public Buffer getIndirectBuffer()
3428c60d7cfc replace jetty jars with source
Franklin Schmidt <fschmidt@gmail.com>
parents:
diff changeset
459 {
3428c60d7cfc replace jetty jars with source
Franklin Schmidt <fschmidt@gmail.com>
parents:
diff changeset
460 Buffer buffer = _indirectBuffer.get();
3428c60d7cfc replace jetty jars with source
Franklin Schmidt <fschmidt@gmail.com>
parents:
diff changeset
461 if (buffer==null)
3428c60d7cfc replace jetty jars with source
Franklin Schmidt <fschmidt@gmail.com>
parents:
diff changeset
462 {
3428c60d7cfc replace jetty jars with source
Franklin Schmidt <fschmidt@gmail.com>
parents:
diff changeset
463 Buffer buffer2=ResourceCache.this.getIndirectBuffer(_resource);
3428c60d7cfc replace jetty jars with source
Franklin Schmidt <fschmidt@gmail.com>
parents:
diff changeset
464
3428c60d7cfc replace jetty jars with source
Franklin Schmidt <fschmidt@gmail.com>
parents:
diff changeset
465 if (buffer2==null)
3428c60d7cfc replace jetty jars with source
Franklin Schmidt <fschmidt@gmail.com>
parents:
diff changeset
466 LOG.warn("Could not load "+this);
3428c60d7cfc replace jetty jars with source
Franklin Schmidt <fschmidt@gmail.com>
parents:
diff changeset
467 else if (_indirectBuffer.compareAndSet(null,buffer2))
3428c60d7cfc replace jetty jars with source
Franklin Schmidt <fschmidt@gmail.com>
parents:
diff changeset
468 buffer=buffer2;
3428c60d7cfc replace jetty jars with source
Franklin Schmidt <fschmidt@gmail.com>
parents:
diff changeset
469 else
3428c60d7cfc replace jetty jars with source
Franklin Schmidt <fschmidt@gmail.com>
parents:
diff changeset
470 buffer=_indirectBuffer.get();
3428c60d7cfc replace jetty jars with source
Franklin Schmidt <fschmidt@gmail.com>
parents:
diff changeset
471 }
3428c60d7cfc replace jetty jars with source
Franklin Schmidt <fschmidt@gmail.com>
parents:
diff changeset
472 if (buffer==null)
3428c60d7cfc replace jetty jars with source
Franklin Schmidt <fschmidt@gmail.com>
parents:
diff changeset
473 return null;
3428c60d7cfc replace jetty jars with source
Franklin Schmidt <fschmidt@gmail.com>
parents:
diff changeset
474 return new View(buffer);
3428c60d7cfc replace jetty jars with source
Franklin Schmidt <fschmidt@gmail.com>
parents:
diff changeset
475 }
3428c60d7cfc replace jetty jars with source
Franklin Schmidt <fschmidt@gmail.com>
parents:
diff changeset
476
3428c60d7cfc replace jetty jars with source
Franklin Schmidt <fschmidt@gmail.com>
parents:
diff changeset
477
3428c60d7cfc replace jetty jars with source
Franklin Schmidt <fschmidt@gmail.com>
parents:
diff changeset
478 /* ------------------------------------------------------------ */
3428c60d7cfc replace jetty jars with source
Franklin Schmidt <fschmidt@gmail.com>
parents:
diff changeset
479 public Buffer getDirectBuffer()
3428c60d7cfc replace jetty jars with source
Franklin Schmidt <fschmidt@gmail.com>
parents:
diff changeset
480 {
3428c60d7cfc replace jetty jars with source
Franklin Schmidt <fschmidt@gmail.com>
parents:
diff changeset
481 Buffer buffer = _directBuffer.get();
3428c60d7cfc replace jetty jars with source
Franklin Schmidt <fschmidt@gmail.com>
parents:
diff changeset
482 if (buffer==null)
3428c60d7cfc replace jetty jars with source
Franklin Schmidt <fschmidt@gmail.com>
parents:
diff changeset
483 {
3428c60d7cfc replace jetty jars with source
Franklin Schmidt <fschmidt@gmail.com>
parents:
diff changeset
484 Buffer buffer2=ResourceCache.this.getDirectBuffer(_resource);
3428c60d7cfc replace jetty jars with source
Franklin Schmidt <fschmidt@gmail.com>
parents:
diff changeset
485
3428c60d7cfc replace jetty jars with source
Franklin Schmidt <fschmidt@gmail.com>
parents:
diff changeset
486 if (buffer2==null)
3428c60d7cfc replace jetty jars with source
Franklin Schmidt <fschmidt@gmail.com>
parents:
diff changeset
487 LOG.warn("Could not load "+this);
3428c60d7cfc replace jetty jars with source
Franklin Schmidt <fschmidt@gmail.com>
parents:
diff changeset
488 else if (_directBuffer.compareAndSet(null,buffer2))
3428c60d7cfc replace jetty jars with source
Franklin Schmidt <fschmidt@gmail.com>
parents:
diff changeset
489 buffer=buffer2;
3428c60d7cfc replace jetty jars with source
Franklin Schmidt <fschmidt@gmail.com>
parents:
diff changeset
490 else
3428c60d7cfc replace jetty jars with source
Franklin Schmidt <fschmidt@gmail.com>
parents:
diff changeset
491 buffer=_directBuffer.get();
3428c60d7cfc replace jetty jars with source
Franklin Schmidt <fschmidt@gmail.com>
parents:
diff changeset
492 }
3428c60d7cfc replace jetty jars with source
Franklin Schmidt <fschmidt@gmail.com>
parents:
diff changeset
493 if (buffer==null)
3428c60d7cfc replace jetty jars with source
Franklin Schmidt <fschmidt@gmail.com>
parents:
diff changeset
494 return null;
3428c60d7cfc replace jetty jars with source
Franklin Schmidt <fschmidt@gmail.com>
parents:
diff changeset
495
3428c60d7cfc replace jetty jars with source
Franklin Schmidt <fschmidt@gmail.com>
parents:
diff changeset
496 return new View(buffer);
3428c60d7cfc replace jetty jars with source
Franklin Schmidt <fschmidt@gmail.com>
parents:
diff changeset
497 }
3428c60d7cfc replace jetty jars with source
Franklin Schmidt <fschmidt@gmail.com>
parents:
diff changeset
498
3428c60d7cfc replace jetty jars with source
Franklin Schmidt <fschmidt@gmail.com>
parents:
diff changeset
499 /* ------------------------------------------------------------ */
3428c60d7cfc replace jetty jars with source
Franklin Schmidt <fschmidt@gmail.com>
parents:
diff changeset
500 public long getContentLength()
3428c60d7cfc replace jetty jars with source
Franklin Schmidt <fschmidt@gmail.com>
parents:
diff changeset
501 {
3428c60d7cfc replace jetty jars with source
Franklin Schmidt <fschmidt@gmail.com>
parents:
diff changeset
502 return _length;
3428c60d7cfc replace jetty jars with source
Franklin Schmidt <fschmidt@gmail.com>
parents:
diff changeset
503 }
3428c60d7cfc replace jetty jars with source
Franklin Schmidt <fschmidt@gmail.com>
parents:
diff changeset
504
3428c60d7cfc replace jetty jars with source
Franklin Schmidt <fschmidt@gmail.com>
parents:
diff changeset
505 /* ------------------------------------------------------------ */
3428c60d7cfc replace jetty jars with source
Franklin Schmidt <fschmidt@gmail.com>
parents:
diff changeset
506 public InputStream getInputStream() throws IOException
3428c60d7cfc replace jetty jars with source
Franklin Schmidt <fschmidt@gmail.com>
parents:
diff changeset
507 {
3428c60d7cfc replace jetty jars with source
Franklin Schmidt <fschmidt@gmail.com>
parents:
diff changeset
508 Buffer indirect = getIndirectBuffer();
3428c60d7cfc replace jetty jars with source
Franklin Schmidt <fschmidt@gmail.com>
parents:
diff changeset
509 if (indirect!=null && indirect.array()!=null)
3428c60d7cfc replace jetty jars with source
Franklin Schmidt <fschmidt@gmail.com>
parents:
diff changeset
510 return new ByteArrayInputStream(indirect.array(),indirect.getIndex(),indirect.length());
3428c60d7cfc replace jetty jars with source
Franklin Schmidt <fschmidt@gmail.com>
parents:
diff changeset
511
3428c60d7cfc replace jetty jars with source
Franklin Schmidt <fschmidt@gmail.com>
parents:
diff changeset
512 return _resource.getInputStream();
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513 }
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514
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515 /* ------------------------------------------------------------ */
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516 @Override
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517 public String toString()
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518 {
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519 return String.format("%s %s %d %s %s",_resource,_resource.exists(),_resource.lastModified(),_contentType,_lastModifiedBytes);
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520 }
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521 }
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522 }