annotate src/cachingfilter/CachingResponseWrapper.java @ 4:e79c7d4dcd7a

fix email footer
author Franklin Schmidt <fschmidt@gmail.com>
date Thu, 25 Apr 2019 15:15:45 -0600
parents 7ecd1a4ef557
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Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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1 package cachingfilter;
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2
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3 import java.io.BufferedOutputStream;
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4 import java.io.File;
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5 import java.io.FileOutputStream;
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6 import java.io.IOException;
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7 import java.io.OutputStream;
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8 import java.io.OutputStreamWriter;
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9 import java.io.PrintWriter;
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10 import java.io.ObjectOutputStream;
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11 import java.io.ObjectInputStream;
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12 import java.net.URLEncoder;
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13 import java.util.Map;
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14 import java.util.HashMap;
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15 import java.util.Set;
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16 import java.util.HashSet;
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17 import java.util.List;
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18 import java.util.ArrayList;
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19 import java.util.Collections;
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20 import java.util.Iterator;
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21 import java.util.Collection;
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22 import javax.servlet.ServletException;
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23 import javax.servlet.ServletOutputStream;
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24 import javax.servlet.ServletRequest;
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25 import javax.servlet.ServletResponse;
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26 import javax.servlet.http.HttpServletRequest;
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27 import javax.servlet.http.HttpServletRequestWrapper;
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28 import javax.servlet.http.HttpServletResponse;
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29 import javax.servlet.http.HttpServletResponseWrapper;
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30 import org.slf4j.Logger;
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31 import org.slf4j.LoggerFactory;
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32
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33
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34 final class CachingResponseWrapper extends HttpServletResponseWrapper {
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35 private static final Logger logger = LoggerFactory.getLogger(CachingResponseWrapper.class);
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36
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37 private static Set<String> cacheableHeaders = new HashSet<String>();
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38 static {
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39 for( String header : new String[]{
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40 "Last-Modified",
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41 "Etag",
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42 "Content-Type",
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43 "Cache-Control",
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44 "Content-Encoding",
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45 } ) {
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46 cacheableHeaders.add( header.toLowerCase() );
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47 }
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48 }
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49
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50 private final CachingFilter cachingFilter;
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51 private final CachingRequestWrapper request;
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52 private final String fullName;
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53 private boolean isCachingToFile;
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54 private CachedPage cachingFile;
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55 private ServletOutputStream outputStream;
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56 private PrintWriter writer;
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57 private int status = SC_OK;
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58 private Long lastModified = null;
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59 private String etag = null;
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60 private FileHandler fileHandler = null;
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61 private ObjectInputStream ois = null;
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62 private final List<ResponseAction> actions = new ArrayList<ResponseAction>();
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63 private boolean isLocked = false; // for debugging
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64 private StringBuilder log = new StringBuilder();
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65
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66 private void log(String msg) {
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67 log.append(msg).append('\n');
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68 }
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69
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70 CachingResponseWrapper( CachingFilter cachingFilter, CachingRequestWrapper request, HttpServletResponse response ) {
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71 super(response);
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72 try {
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73 this.cachingFilter = cachingFilter;
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74 this.request = request;
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75 this.fullName = getFullName();
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76 boolean ok = false;
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77 try {
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78 if( !openObjectInputStream() ) { // calls lock()
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79 ok = true;
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80 return;
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81 }
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82 Long cachedLastModified = (Long)ois.readObject();
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83 if( cachedLastModified==null )
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84 cachedLastModified = -1L;
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85 request.headerMap.put( CachingRequestWrapper.IF_MODIFIED_SINCE, cachedLastModified );
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86 String cachedEtag = (String)ois.readObject();
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87 request.headerMap.put( CachingRequestWrapper.IF_NONE_MATCH, cachedEtag );
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88 ok = true;
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89 } finally {
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90 if( !ok && cachingFile != null )
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91 unlock();
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92 }
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93 } catch(ClassNotFoundException e) {
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94 throw new RuntimeException(e);
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95 } catch(IOException e) {
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96 throw new RuntimeException(e);
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97 }
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98 }
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99
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100 private String getFullName()
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101 throws IOException
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102 {
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103 StringBuffer url = request.getRequestURL();
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104 String queryString = request.getQueryString();
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105 if( queryString != null ) {
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106 url.append( '?' );
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107 url.append( queryString );
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108 }
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109 log("url = "+url);
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110 String fullUrl = URLEncoder.encode(url.toString(),"UTF-8");
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111 String acceptEncoding = request.getHeader("Accept-Encoding");
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112 logger.trace("acceptEncoding = "+acceptEncoding);
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113 if( acceptEncoding == null )
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114 return fullUrl;
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115 Set<String> knownEncodings = cachingFilter.getEncodings();
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116 List<String> list = new ArrayList<String>();
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117 for( String encoding : acceptEncoding.split(",") ) {
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118 encoding = encoding.trim();
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119 if( knownEncodings.contains(encoding) )
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120 list.add(encoding);
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121 }
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122 if( list.isEmpty() ) {
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123 request.headerMap.put( CachingRequestWrapper.ACCEPT_ENCODING, null );
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124 return fullUrl;
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125 }
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126 String encodings = join( list, "," );
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127 request.headerMap.put( CachingRequestWrapper.ACCEPT_ENCODING, encodings );
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128 return fullUrl + '~' + encodings;
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129 }
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130
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131 private void lock() {
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132 CachingFilter.locker.lock(cachingFile.name());
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133 log("lock");
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134 isLocked = true;
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135 }
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136
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137 private boolean unlock() {
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138 boolean wasLocked = CachingFilter.locker.unlock(cachingFile.name());
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139 log("unlock "+wasLocked);
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140 if( isLocked != wasLocked )
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141 logger.error("isLocked="+isLocked+" wasLocked="+wasLocked,new Exception());
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142 isLocked = false;
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143 return wasLocked;
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144 }
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145
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146 private static String join(Collection<?> col,String separator) {
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147 if( col.isEmpty() )
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148 return "";
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149 StringBuilder sb = new StringBuilder();
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150 Iterator<?> iter = col.iterator();
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151 sb.append( iter.next() );
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152 while( iter.hasNext() ) {
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153 sb.append( separator ).append( iter.next() );
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154 }
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155 return sb.toString();
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156 }
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157
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158 private static long hashCode(String s) {
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159 final int len = s.length();
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160 long h = 0;
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161 for( int i = 0; i < len; i++ ) {
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162 h = 31*h + s.charAt(i);
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163 }
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164 return h;
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165 }
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166
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167 private boolean openObjectInputStream() {
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168 for( long hash = hashCode(fullName); true; hash++ ) {
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169 String s = Long.toHexString(hash);
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170 cachingFile = cachingFilter.newCachedPage(s);
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171 lock();
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172 if( !cachingFile.exists() ) {
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173 logger.trace("couldn't find "+cachingFile);
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174 return false;
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175 }
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176 try {
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177 FileHandler fileHandler = FileHandler.factory.newInstance(cachingFile.lastFile());
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178 ObjectInputStream ois = new ObjectInputStream(fileHandler.getInputStream());
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179 if( ois.readUTF().equals(fullName) ) {
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180 logger.trace("found file = "+cachingFile);
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181 this.fileHandler = fileHandler;
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182 this.ois = ois;
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183 return true;
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184 }
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185 fileHandler.close();
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186 } catch(IOException e) {
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187 logger.error("couldn't read "+cachingFile+" length="+cachingFile.lastFile().length(),e);
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188 if( !cachingFile.delete() )
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189 logger.error("couldn't delete "+cachingFile);
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190 return false;
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191 }
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192 unlock();
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193 }
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194 }
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195
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196 public void setContentType(String ct)
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197 {
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198 logger.trace("setContentType "+ct);
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199 super.setContentType(ct);
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200 actions.add( new ResponseAction.SetHeader("Content-Type",ct) );
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201 }
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202
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203 public void setStatus(int sc, String sm)
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204 {
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205 logger.trace("setStatus2");
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206 super.setStatus(sc,sm);
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207 this.status = sc;
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208 }
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209
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210 public void setStatus(int sc)
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211 {
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212 logger.trace("setStatus "+sc);
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213 super.setStatus(sc);
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214 this.status = sc;
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215 }
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216
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217 public void setHeader(String name, String value) {
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218 logger.trace("setHeader "+name+" = "+value);
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219 super.setHeader(name,value);
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220 if( "Etag".equalsIgnoreCase(name) )
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221 etag = value;
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222 if( "Last-Modified".equalsIgnoreCase(name) ) {
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223 if( value==null )
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224 lastModified = null;
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225 else
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226 logger.error("unsupported",new Exception());
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227 }
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228 if( cacheableHeaders.contains(name.toLowerCase()) )
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229 actions.add( new ResponseAction.SetHeader(name,value) );
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230 }
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231
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232 public void addHeader(String name, String value) {
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233 logger.trace("addHeader "+name+" = "+value);
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234 super.addHeader(name,value);
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235 if( cacheableHeaders.contains(name.toLowerCase()) )
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236 actions.add( new ResponseAction.AddHeader(name,value) );
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237 }
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238
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239 public void setIntHeader(String name, int value) {
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240 logger.trace("setIntHeader "+name);
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241 super.setIntHeader(name,value);
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242 if( cacheableHeaders.contains(name.toLowerCase()) )
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243 actions.add( new ResponseAction.SetIntHeader(name,value) );
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244 }
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245
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246 public void addIntHeader(String name, int value) {
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247 logger.trace("addIntHeader "+name);
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248 super.addIntHeader(name,value);
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249 if( cacheableHeaders.contains(name.toLowerCase()) )
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250 actions.add( new ResponseAction.AddIntHeader(name,value) );
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251 }
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252
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253 public void setDateHeader(String name, long value) {
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254 logger.trace("setDateHeader "+name);
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255 super.setDateHeader(name,value);
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256 value = value / 1000 * 1000; // round to seconds
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257 if( "Last-Modified".equalsIgnoreCase(name) )
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258 lastModified = value;
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parents:
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259 if( cacheableHeaders.contains(name.toLowerCase()) )
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parents:
diff changeset
260 actions.add( new ResponseAction.SetDateHeader(name,value) );
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parents:
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261 }
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262
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263 public void addDateHeader(String name, long value) {
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264 logger.trace("addDateHeader "+name);
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diff changeset
265 super.setDateHeader(name,value);
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parents:
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266 if( cacheableHeaders.contains(name.toLowerCase()) )
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diff changeset
267 actions.add( new ResponseAction.AddDateHeader(name,value) );
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parents:
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268 }
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269
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270 public void reset()
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271 {
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272 logger.trace("reset");
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273 super.reset();
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274 resetOutput();
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diff changeset
275 status = SC_OK;
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diff changeset
276 lastModified = null;
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277 etag = null;
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diff changeset
278 actions.clear();
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279 }
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280
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diff changeset
281 public void resetBuffer()
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parents:
diff changeset
282 {
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parents:
diff changeset
283 logger.trace("resetBuffer");
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parents:
diff changeset
284 super.resetBuffer();
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parents:
diff changeset
285 resetOutput();
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parents:
diff changeset
286 }
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parents:
diff changeset
287
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parents:
diff changeset
288 private void resetOutput() {
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parents:
diff changeset
289 if( isCachingToFile ) {
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parents:
diff changeset
290 try {
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diff changeset
291 outputStream.close();
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parents:
diff changeset
292 } catch(IOException e) {
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parents:
diff changeset
293 logger.error("resetOutput",e);
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parents:
diff changeset
294 }
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parents:
diff changeset
295 cachingFile.deleteNewFile();
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parents:
diff changeset
296 isCachingToFile = false;
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parents:
diff changeset
297 }
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diff changeset
298 outputStream = null;
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diff changeset
299 writer = null;
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parents:
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300 }
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diff changeset
301
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diff changeset
302 public void sendError(int sc, String msg) throws IOException
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parents:
diff changeset
303 {
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parents:
diff changeset
304 logger.trace("sendError2");
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parents:
diff changeset
305 this.status = sc;
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diff changeset
306 resetBuffer();
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parents:
diff changeset
307 if( shouldSendFile() ) {
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parents:
diff changeset
308 sendFile();
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diff changeset
309 } else {
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parents:
diff changeset
310 super.sendError(sc,msg);
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parents:
diff changeset
311 }
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312 }
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parents:
diff changeset
313
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diff changeset
314 public void sendError(int sc) throws IOException
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parents:
diff changeset
315 {
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diff changeset
316 logger.trace("sendError");
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diff changeset
317 this.status = sc;
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diff changeset
318 resetBuffer();
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parents:
diff changeset
319 if( shouldSendFile() ) {
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diff changeset
320 sendFile();
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diff changeset
321 } else {
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parents:
diff changeset
322 super.sendError(sc);
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parents:
diff changeset
323 }
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parents:
diff changeset
324 }
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parents:
diff changeset
325
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diff changeset
326 public void sendRedirect(String location) throws IOException
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parents:
diff changeset
327 {
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diff changeset
328 logger.trace("sendRedirect");
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parents:
diff changeset
329 this.status = SC_MOVED_TEMPORARILY;
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parents:
diff changeset
330 resetBuffer();
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parents:
diff changeset
331 super.sendRedirect(location);
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parents:
diff changeset
332 }
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parents:
diff changeset
333
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diff changeset
334 public void flushBuffer() throws IOException
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parents:
diff changeset
335 {
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parents:
diff changeset
336 logger.trace("flushBuffer "+isCommitted());
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parents:
diff changeset
337 if( writer != null )
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diff changeset
338 writer.flush();
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parents:
diff changeset
339 if( outputStream != null )
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parents:
diff changeset
340 outputStream.flush();
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parents:
diff changeset
341 else if( shouldSendFile() )
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parents:
diff changeset
342 sendFile();
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parents:
diff changeset
343 else
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parents:
diff changeset
344 getResponse().flushBuffer();
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parents:
diff changeset
345 }
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parents:
diff changeset
346
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parents:
diff changeset
347 private boolean shouldSendFile() {
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parents:
diff changeset
348 if( !(status==SC_NOT_MODIFIED && ois!=null) )
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parents:
diff changeset
349 return false;
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parents:
diff changeset
350 if( request.isCacheable() )
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parents:
diff changeset
351 return false; // no need
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parents:
diff changeset
352 return true;
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parents:
diff changeset
353 }
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parents:
diff changeset
354
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parents:
diff changeset
355 private void sendFile() throws IOException {
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parents:
diff changeset
356 CachingResponseWrapper.super.setHeader("Via","cache-yes");
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parents:
diff changeset
357 sendFile2();
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parents:
diff changeset
358 }
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parents:
diff changeset
359
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parents:
diff changeset
360 private void sendFile2() throws IOException {
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parents:
diff changeset
361 logger.trace("sendFile");
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Franklin Schmidt <fschmidt@gmail.com>
parents:
diff changeset
362 unlock();
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Franklin Schmidt <fschmidt@gmail.com>
parents:
diff changeset
363 setStatus(SC_OK);
7ecd1a4ef557 add content
Franklin Schmidt <fschmidt@gmail.com>
parents:
diff changeset
364 HttpServletResponse response = (HttpServletResponse)getResponse();
7ecd1a4ef557 add content
Franklin Schmidt <fschmidt@gmail.com>
parents:
diff changeset
365 try {
7ecd1a4ef557 add content
Franklin Schmidt <fschmidt@gmail.com>
parents:
diff changeset
366 @SuppressWarnings("unchecked")
7ecd1a4ef557 add content
Franklin Schmidt <fschmidt@gmail.com>
parents:
diff changeset
367 List<ResponseAction> cachedActions = (List<ResponseAction>)ois.readObject();
7ecd1a4ef557 add content
Franklin Schmidt <fschmidt@gmail.com>
parents:
diff changeset
368 for( ResponseAction cachedAction : cachedActions ) {
7ecd1a4ef557 add content
Franklin Schmidt <fschmidt@gmail.com>
parents:
diff changeset
369 cachedAction.apply(response);
7ecd1a4ef557 add content
Franklin Schmidt <fschmidt@gmail.com>
parents:
diff changeset
370 }
7ecd1a4ef557 add content
Franklin Schmidt <fschmidt@gmail.com>
parents:
diff changeset
371 } catch(ClassNotFoundException e) {
7ecd1a4ef557 add content
Franklin Schmidt <fschmidt@gmail.com>
parents:
diff changeset
372 throw new RuntimeException(e);
7ecd1a4ef557 add content
Franklin Schmidt <fschmidt@gmail.com>
parents:
diff changeset
373 }
7ecd1a4ef557 add content
Franklin Schmidt <fschmidt@gmail.com>
parents:
diff changeset
374 ServletOutputStream out = response.getOutputStream();
7ecd1a4ef557 add content
Franklin Schmidt <fschmidt@gmail.com>
parents:
diff changeset
375 fileHandler.writeTo(out);
7ecd1a4ef557 add content
Franklin Schmidt <fschmidt@gmail.com>
parents:
diff changeset
376 }
7ecd1a4ef557 add content
Franklin Schmidt <fschmidt@gmail.com>
parents:
diff changeset
377
7ecd1a4ef557 add content
Franklin Schmidt <fschmidt@gmail.com>
parents:
diff changeset
378 public ServletOutputStream getOutputStream()
7ecd1a4ef557 add content
Franklin Schmidt <fschmidt@gmail.com>
parents:
diff changeset
379 {
7ecd1a4ef557 add content
Franklin Schmidt <fschmidt@gmail.com>
parents:
diff changeset
380 logger.trace("getOutputStream");
7ecd1a4ef557 add content
Franklin Schmidt <fschmidt@gmail.com>
parents:
diff changeset
381 if (outputStream==null) {
7ecd1a4ef557 add content
Franklin Schmidt <fschmidt@gmail.com>
parents:
diff changeset
382 newOutputStream();
7ecd1a4ef557 add content
Franklin Schmidt <fschmidt@gmail.com>
parents:
diff changeset
383 } else if (writer!=null)
7ecd1a4ef557 add content
Franklin Schmidt <fschmidt@gmail.com>
parents:
diff changeset
384 throw new IllegalStateException("getWriter() called");
7ecd1a4ef557 add content
Franklin Schmidt <fschmidt@gmail.com>
parents:
diff changeset
385
7ecd1a4ef557 add content
Franklin Schmidt <fschmidt@gmail.com>
parents:
diff changeset
386 return outputStream;
7ecd1a4ef557 add content
Franklin Schmidt <fschmidt@gmail.com>
parents:
diff changeset
387 }
7ecd1a4ef557 add content
Franklin Schmidt <fschmidt@gmail.com>
parents:
diff changeset
388
7ecd1a4ef557 add content
Franklin Schmidt <fschmidt@gmail.com>
parents:
diff changeset
389 public PrintWriter getWriter() throws IOException
7ecd1a4ef557 add content
Franklin Schmidt <fschmidt@gmail.com>
parents:
diff changeset
390 {
7ecd1a4ef557 add content
Franklin Schmidt <fschmidt@gmail.com>
parents:
diff changeset
391 logger.trace("getWriter");
7ecd1a4ef557 add content
Franklin Schmidt <fschmidt@gmail.com>
parents:
diff changeset
392 if (writer==null)
7ecd1a4ef557 add content
Franklin Schmidt <fschmidt@gmail.com>
parents:
diff changeset
393 {
7ecd1a4ef557 add content
Franklin Schmidt <fschmidt@gmail.com>
parents:
diff changeset
394 if (outputStream!=null)
7ecd1a4ef557 add content
Franklin Schmidt <fschmidt@gmail.com>
parents:
diff changeset
395 throw new IllegalStateException("getOutputStream() called");
7ecd1a4ef557 add content
Franklin Schmidt <fschmidt@gmail.com>
parents:
diff changeset
396
7ecd1a4ef557 add content
Franklin Schmidt <fschmidt@gmail.com>
parents:
diff changeset
397 newOutputStream();
7ecd1a4ef557 add content
Franklin Schmidt <fschmidt@gmail.com>
parents:
diff changeset
398 String encoding = getCharacterEncoding();
7ecd1a4ef557 add content
Franklin Schmidt <fschmidt@gmail.com>
parents:
diff changeset
399 writer = encoding==null ? new PrintWriter(outputStream)
7ecd1a4ef557 add content
Franklin Schmidt <fschmidt@gmail.com>
parents:
diff changeset
400 : new PrintWriter(new OutputStreamWriter(outputStream,encoding));
7ecd1a4ef557 add content
Franklin Schmidt <fschmidt@gmail.com>
parents:
diff changeset
401 }
7ecd1a4ef557 add content
Franklin Schmidt <fschmidt@gmail.com>
parents:
diff changeset
402 return writer;
7ecd1a4ef557 add content
Franklin Schmidt <fschmidt@gmail.com>
parents:
diff changeset
403 }
7ecd1a4ef557 add content
Franklin Schmidt <fschmidt@gmail.com>
parents:
diff changeset
404
7ecd1a4ef557 add content
Franklin Schmidt <fschmidt@gmail.com>
parents:
diff changeset
405 private boolean isCacheable() {
7ecd1a4ef557 add content
Franklin Schmidt <fschmidt@gmail.com>
parents:
diff changeset
406 if( getResponse().isCommitted() ) {
7ecd1a4ef557 add content
Franklin Schmidt <fschmidt@gmail.com>
parents:
diff changeset
407 logger.trace("!isCacheable - isCommitted");
7ecd1a4ef557 add content
Franklin Schmidt <fschmidt@gmail.com>
parents:
diff changeset
408 return false;
7ecd1a4ef557 add content
Franklin Schmidt <fschmidt@gmail.com>
parents:
diff changeset
409 }
7ecd1a4ef557 add content
Franklin Schmidt <fschmidt@gmail.com>
parents:
diff changeset
410 if( status != SC_OK ) {
7ecd1a4ef557 add content
Franklin Schmidt <fschmidt@gmail.com>
parents:
diff changeset
411 logger.trace("!isCacheable - status="+status);
7ecd1a4ef557 add content
Franklin Schmidt <fschmidt@gmail.com>
parents:
diff changeset
412 return false;
7ecd1a4ef557 add content
Franklin Schmidt <fschmidt@gmail.com>
parents:
diff changeset
413 }
7ecd1a4ef557 add content
Franklin Schmidt <fschmidt@gmail.com>
parents:
diff changeset
414 if( lastModified==null && etag==null ) {
7ecd1a4ef557 add content
Franklin Schmidt <fschmidt@gmail.com>
parents:
diff changeset
415 logger.trace("!isCacheable - no lastModified,etag");
7ecd1a4ef557 add content
Franklin Schmidt <fschmidt@gmail.com>
parents:
diff changeset
416 return false;
7ecd1a4ef557 add content
Franklin Schmidt <fschmidt@gmail.com>
parents:
diff changeset
417 }
7ecd1a4ef557 add content
Franklin Schmidt <fschmidt@gmail.com>
parents:
diff changeset
418 return true;
7ecd1a4ef557 add content
Franklin Schmidt <fschmidt@gmail.com>
parents:
diff changeset
419 }
7ecd1a4ef557 add content
Franklin Schmidt <fschmidt@gmail.com>
parents:
diff changeset
420
7ecd1a4ef557 add content
Franklin Schmidt <fschmidt@gmail.com>
parents:
diff changeset
421 private void newOutputStream() {
7ecd1a4ef557 add content
Franklin Schmidt <fschmidt@gmail.com>
parents:
diff changeset
422 outputStream = new ProxyServletOutputStream() {
7ecd1a4ef557 add content
Franklin Schmidt <fschmidt@gmail.com>
parents:
diff changeset
423 protected OutputStream newOutputStream()
7ecd1a4ef557 add content
Franklin Schmidt <fschmidt@gmail.com>
parents:
diff changeset
424 throws IOException
7ecd1a4ef557 add content
Franklin Schmidt <fschmidt@gmail.com>
parents:
diff changeset
425 {
7ecd1a4ef557 add content
Franklin Schmidt <fschmidt@gmail.com>
parents:
diff changeset
426 CachingResponseWrapper.super.setHeader("Via","cache-no");
7ecd1a4ef557 add content
Franklin Schmidt <fschmidt@gmail.com>
parents:
diff changeset
427 ServletOutputStream out = getResponse().getOutputStream();
7ecd1a4ef557 add content
Franklin Schmidt <fschmidt@gmail.com>
parents:
diff changeset
428 if( !isCacheable() ) {
7ecd1a4ef557 add content
Franklin Schmidt <fschmidt@gmail.com>
parents:
diff changeset
429 unlock();
7ecd1a4ef557 add content
Franklin Schmidt <fschmidt@gmail.com>
parents:
diff changeset
430 logger.trace("return getResponse().getOutputStream() "+out.getClass());
7ecd1a4ef557 add content
Franklin Schmidt <fschmidt@gmail.com>
parents:
diff changeset
431 return out;
7ecd1a4ef557 add content
Franklin Schmidt <fschmidt@gmail.com>
parents:
diff changeset
432 }
7ecd1a4ef557 add content
Franklin Schmidt <fschmidt@gmail.com>
parents:
diff changeset
433 try {
7ecd1a4ef557 add content
Franklin Schmidt <fschmidt@gmail.com>
parents:
diff changeset
434 File newFile = cachingFile.newFile();
7ecd1a4ef557 add content
Franklin Schmidt <fschmidt@gmail.com>
parents:
diff changeset
435 logger.trace("write to cache");
7ecd1a4ef557 add content
Franklin Schmidt <fschmidt@gmail.com>
parents:
diff changeset
436 isCachingToFile = true;
7ecd1a4ef557 add content
Franklin Schmidt <fschmidt@gmail.com>
parents:
diff changeset
437 OutputStream outFile = new BufferedOutputStream(new FileOutputStream(newFile));
7ecd1a4ef557 add content
Franklin Schmidt <fschmidt@gmail.com>
parents:
diff changeset
438 ObjectOutputStream oos = new ObjectOutputStream(outFile);
7ecd1a4ef557 add content
Franklin Schmidt <fschmidt@gmail.com>
parents:
diff changeset
439 oos.writeUTF(fullName);
7ecd1a4ef557 add content
Franklin Schmidt <fschmidt@gmail.com>
parents:
diff changeset
440 oos.writeObject(lastModified);
7ecd1a4ef557 add content
Franklin Schmidt <fschmidt@gmail.com>
parents:
diff changeset
441 oos.writeObject(etag);
7ecd1a4ef557 add content
Franklin Schmidt <fschmidt@gmail.com>
parents:
diff changeset
442 oos.writeObject(actions);
7ecd1a4ef557 add content
Franklin Schmidt <fschmidt@gmail.com>
parents:
diff changeset
443 oos.flush();
7ecd1a4ef557 add content
Franklin Schmidt <fschmidt@gmail.com>
parents:
diff changeset
444 return outFile;
7ecd1a4ef557 add content
Franklin Schmidt <fschmidt@gmail.com>
parents:
diff changeset
445 } catch(IOException e) {
7ecd1a4ef557 add content
Franklin Schmidt <fschmidt@gmail.com>
parents:
diff changeset
446 throw new RuntimeException(e);
7ecd1a4ef557 add content
Franklin Schmidt <fschmidt@gmail.com>
parents:
diff changeset
447 }
7ecd1a4ef557 add content
Franklin Schmidt <fschmidt@gmail.com>
parents:
diff changeset
448 }
7ecd1a4ef557 add content
Franklin Schmidt <fschmidt@gmail.com>
parents:
diff changeset
449 };
7ecd1a4ef557 add content
Franklin Schmidt <fschmidt@gmail.com>
parents:
diff changeset
450 }
7ecd1a4ef557 add content
Franklin Schmidt <fschmidt@gmail.com>
parents:
diff changeset
451
7ecd1a4ef557 add content
Franklin Schmidt <fschmidt@gmail.com>
parents:
diff changeset
452 void finish(boolean isDone) throws IOException {
7ecd1a4ef557 add content
Franklin Schmidt <fschmidt@gmail.com>
parents:
diff changeset
453 try {
7ecd1a4ef557 add content
Franklin Schmidt <fschmidt@gmail.com>
parents:
diff changeset
454 log("finish a");
7ecd1a4ef557 add content
Franklin Schmidt <fschmidt@gmail.com>
parents:
diff changeset
455 if( fileHandler != null ) {
7ecd1a4ef557 add content
Franklin Schmidt <fschmidt@gmail.com>
parents:
diff changeset
456 fileHandler.close();
7ecd1a4ef557 add content
Franklin Schmidt <fschmidt@gmail.com>
parents:
diff changeset
457 logger.trace("closed fileHandler");
7ecd1a4ef557 add content
Franklin Schmidt <fschmidt@gmail.com>
parents:
diff changeset
458 }
7ecd1a4ef557 add content
Franklin Schmidt <fschmidt@gmail.com>
parents:
diff changeset
459 if( outputStream == null || !isDone && !isCachingToFile )
7ecd1a4ef557 add content
Franklin Schmidt <fschmidt@gmail.com>
parents:
diff changeset
460 unlock();
7ecd1a4ef557 add content
Franklin Schmidt <fschmidt@gmail.com>
parents:
diff changeset
461 if( isDone ) {
7ecd1a4ef557 add content
Franklin Schmidt <fschmidt@gmail.com>
parents:
diff changeset
462 if( writer != null )
7ecd1a4ef557 add content
Franklin Schmidt <fschmidt@gmail.com>
parents:
diff changeset
463 writer.flush();
7ecd1a4ef557 add content
Franklin Schmidt <fschmidt@gmail.com>
parents:
diff changeset
464 if( outputStream != null ) {
7ecd1a4ef557 add content
Franklin Schmidt <fschmidt@gmail.com>
parents:
diff changeset
465 try {
7ecd1a4ef557 add content
Franklin Schmidt <fschmidt@gmail.com>
parents:
diff changeset
466 outputStream.flush();
7ecd1a4ef557 add content
Franklin Schmidt <fschmidt@gmail.com>
parents:
diff changeset
467 } catch(IOException e) {
7ecd1a4ef557 add content
Franklin Schmidt <fschmidt@gmail.com>
parents:
diff changeset
468 logger.trace("",e);
7ecd1a4ef557 add content
Franklin Schmidt <fschmidt@gmail.com>
parents:
diff changeset
469 isDone = false;
7ecd1a4ef557 add content
Franklin Schmidt <fschmidt@gmail.com>
parents:
diff changeset
470 }
7ecd1a4ef557 add content
Franklin Schmidt <fschmidt@gmail.com>
parents:
diff changeset
471 }
7ecd1a4ef557 add content
Franklin Schmidt <fschmidt@gmail.com>
parents:
diff changeset
472 }
7ecd1a4ef557 add content
Franklin Schmidt <fschmidt@gmail.com>
parents:
diff changeset
473 if( isCachingToFile ) {
7ecd1a4ef557 add content
Franklin Schmidt <fschmidt@gmail.com>
parents:
diff changeset
474 log("finish b");
7ecd1a4ef557 add content
Franklin Schmidt <fschmidt@gmail.com>
parents:
diff changeset
475 try {
7ecd1a4ef557 add content
Franklin Schmidt <fschmidt@gmail.com>
parents:
diff changeset
476 outputStream.close();
7ecd1a4ef557 add content
Franklin Schmidt <fschmidt@gmail.com>
parents:
diff changeset
477 } catch(IOException e) {
7ecd1a4ef557 add content
Franklin Schmidt <fschmidt@gmail.com>
parents:
diff changeset
478 logger.trace("",e);
7ecd1a4ef557 add content
Franklin Schmidt <fschmidt@gmail.com>
parents:
diff changeset
479 isDone = false;
7ecd1a4ef557 add content
Franklin Schmidt <fschmidt@gmail.com>
parents:
diff changeset
480 }
7ecd1a4ef557 add content
Franklin Schmidt <fschmidt@gmail.com>
parents:
diff changeset
481 if( isDone ) {
7ecd1a4ef557 add content
Franklin Schmidt <fschmidt@gmail.com>
parents:
diff changeset
482 log("finish c");
7ecd1a4ef557 add content
Franklin Schmidt <fschmidt@gmail.com>
parents:
diff changeset
483 try {
7ecd1a4ef557 add content
Franklin Schmidt <fschmidt@gmail.com>
parents:
diff changeset
484 log("file size = "+cachingFile.lastFile().length());
7ecd1a4ef557 add content
Franklin Schmidt <fschmidt@gmail.com>
parents:
diff changeset
485 fileHandler = FileHandler.factory.newInstance(cachingFile.lastFile());
7ecd1a4ef557 add content
Franklin Schmidt <fschmidt@gmail.com>
parents:
diff changeset
486 ois = new ObjectInputStream(fileHandler.getInputStream());
7ecd1a4ef557 add content
Franklin Schmidt <fschmidt@gmail.com>
parents:
diff changeset
487 ois.readUTF(); // full name
7ecd1a4ef557 add content
Franklin Schmidt <fschmidt@gmail.com>
parents:
diff changeset
488 ois.readObject(); // lastModified
7ecd1a4ef557 add content
Franklin Schmidt <fschmidt@gmail.com>
parents:
diff changeset
489 ois.readObject(); // etag
7ecd1a4ef557 add content
Franklin Schmidt <fschmidt@gmail.com>
parents:
diff changeset
490 } catch(ClassNotFoundException e) {
7ecd1a4ef557 add content
Franklin Schmidt <fschmidt@gmail.com>
parents:
diff changeset
491 throw new RuntimeException(e);
7ecd1a4ef557 add content
Franklin Schmidt <fschmidt@gmail.com>
parents:
diff changeset
492 } catch(IOException e) {
7ecd1a4ef557 add content
Franklin Schmidt <fschmidt@gmail.com>
parents:
diff changeset
493 cachingFile.deleteNewFile();
7ecd1a4ef557 add content
Franklin Schmidt <fschmidt@gmail.com>
parents:
diff changeset
494 throw new RuntimeException(e);
7ecd1a4ef557 add content
Franklin Schmidt <fschmidt@gmail.com>
parents:
diff changeset
495 }
7ecd1a4ef557 add content
Franklin Schmidt <fschmidt@gmail.com>
parents:
diff changeset
496 CachingResponseWrapper.super.setHeader("Via","cache-write");
7ecd1a4ef557 add content
Franklin Schmidt <fschmidt@gmail.com>
parents:
diff changeset
497 try {
7ecd1a4ef557 add content
Franklin Schmidt <fschmidt@gmail.com>
parents:
diff changeset
498 log("finish d");
7ecd1a4ef557 add content
Franklin Schmidt <fschmidt@gmail.com>
parents:
diff changeset
499 sendFile2();
7ecd1a4ef557 add content
Franklin Schmidt <fschmidt@gmail.com>
parents:
diff changeset
500 log("finish e");
7ecd1a4ef557 add content
Franklin Schmidt <fschmidt@gmail.com>
parents:
diff changeset
501 } catch(IOException e) {
7ecd1a4ef557 add content
Franklin Schmidt <fschmidt@gmail.com>
parents:
diff changeset
502 unlock();
7ecd1a4ef557 add content
Franklin Schmidt <fschmidt@gmail.com>
parents:
diff changeset
503 throw e;
7ecd1a4ef557 add content
Franklin Schmidt <fschmidt@gmail.com>
parents:
diff changeset
504 }
7ecd1a4ef557 add content
Franklin Schmidt <fschmidt@gmail.com>
parents:
diff changeset
505 fileHandler.close();
7ecd1a4ef557 add content
Franklin Schmidt <fschmidt@gmail.com>
parents:
diff changeset
506 } else {
7ecd1a4ef557 add content
Franklin Schmidt <fschmidt@gmail.com>
parents:
diff changeset
507 cachingFile.deleteNewFile();
7ecd1a4ef557 add content
Franklin Schmidt <fschmidt@gmail.com>
parents:
diff changeset
508 unlock();
7ecd1a4ef557 add content
Franklin Schmidt <fschmidt@gmail.com>
parents:
diff changeset
509 }
7ecd1a4ef557 add content
Franklin Schmidt <fschmidt@gmail.com>
parents:
diff changeset
510 }
7ecd1a4ef557 add content
Franklin Schmidt <fschmidt@gmail.com>
parents:
diff changeset
511 log("finish z");
7ecd1a4ef557 add content
Franklin Schmidt <fschmidt@gmail.com>
parents:
diff changeset
512 } catch(RuntimeException e) {
7ecd1a4ef557 add content
Franklin Schmidt <fschmidt@gmail.com>
parents:
diff changeset
513 log("finish RuntimeException");
7ecd1a4ef557 add content
Franklin Schmidt <fschmidt@gmail.com>
parents:
diff changeset
514 logger.error("RuntimeException in finish()",e);
7ecd1a4ef557 add content
Franklin Schmidt <fschmidt@gmail.com>
parents:
diff changeset
515 throw e;
7ecd1a4ef557 add content
Franklin Schmidt <fschmidt@gmail.com>
parents:
diff changeset
516 } catch(Error e) {
7ecd1a4ef557 add content
Franklin Schmidt <fschmidt@gmail.com>
parents:
diff changeset
517 log("finish Error");
7ecd1a4ef557 add content
Franklin Schmidt <fschmidt@gmail.com>
parents:
diff changeset
518 logger.error("Error in finish()",e);
7ecd1a4ef557 add content
Franklin Schmidt <fschmidt@gmail.com>
parents:
diff changeset
519 throw e;
7ecd1a4ef557 add content
Franklin Schmidt <fschmidt@gmail.com>
parents:
diff changeset
520 } finally {
7ecd1a4ef557 add content
Franklin Schmidt <fschmidt@gmail.com>
parents:
diff changeset
521 if( unlock() ) {
7ecd1a4ef557 add content
Franklin Schmidt <fschmidt@gmail.com>
parents:
diff changeset
522 logger.error("still locked isDone="+isDone+" isCachingToFile="+isCachingToFile+" outputStream="+(outputStream!=null));
7ecd1a4ef557 add content
Franklin Schmidt <fschmidt@gmail.com>
parents:
diff changeset
523 logger.error("log:\n"+log);
7ecd1a4ef557 add content
Franklin Schmidt <fschmidt@gmail.com>
parents:
diff changeset
524 }
7ecd1a4ef557 add content
Franklin Schmidt <fschmidt@gmail.com>
parents:
diff changeset
525 }
7ecd1a4ef557 add content
Franklin Schmidt <fschmidt@gmail.com>
parents:
diff changeset
526 }
7ecd1a4ef557 add content
Franklin Schmidt <fschmidt@gmail.com>
parents:
diff changeset
527
7ecd1a4ef557 add content
Franklin Schmidt <fschmidt@gmail.com>
parents:
diff changeset
528 }