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annotate src/org/eclipse/jetty/server/session/HashSessionIdManager.java @ 802:3428c60d7cfc

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replace jetty jars with source
author Franklin Schmidt <fschmidt@gmail.com>
date Wed, 07 Sep 2016 21:15:48 -0600
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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.session;
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20
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21 import java.lang.ref.WeakReference;
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22 import java.util.ArrayList;
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23 import java.util.Collection;
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24 import java.util.Collections;
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25 import java.util.HashMap;
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26 import java.util.HashSet;
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27 import java.util.Iterator;
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28 import java.util.Map;
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29 import java.util.Random;
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30 import java.util.Set;
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31
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32 import javax.servlet.http.HttpServletRequest;
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33 import javax.servlet.http.HttpSession;
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34
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35 import org.eclipse.jetty.server.SessionIdManager;
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36
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37 /* ------------------------------------------------------------ */
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38 /**
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39 * HashSessionIdManager. An in-memory implementation of the session ID manager.
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40 */
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41 public class HashSessionIdManager extends AbstractSessionIdManager
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42 {
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43 private final Map<String, Set<WeakReference<HttpSession>>> _sessions = new HashMap<String, Set<WeakReference<HttpSession>>>();
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44
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45 /* ------------------------------------------------------------ */
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46 public HashSessionIdManager()
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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 HashSessionIdManager(Random random)
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52 {
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53 super(random);
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54 }
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55
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56 /* ------------------------------------------------------------ */
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57 /**
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58 * @return Collection of String session IDs
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59 */
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60 public Collection<String> getSessions()
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61 {
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62 return Collections.unmodifiableCollection(_sessions.keySet());
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63 }
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64
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65 /* ------------------------------------------------------------ */
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66 /**
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67 * @return Collection of Sessions for the passed session ID
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68 */
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69 public Collection<HttpSession> getSession(String id)
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70 {
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71 ArrayList<HttpSession> sessions = new ArrayList<HttpSession>();
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72 Set<WeakReference<HttpSession>> refs =_sessions.get(id);
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73 if (refs!=null)
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74 {
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75 for (WeakReference<HttpSession> ref: refs)
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76 {
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77 HttpSession session = ref.get();
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78 if (session!=null)
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79 sessions.add(session);
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80 }
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81 }
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82 return sessions;
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83 }
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84 /* ------------------------------------------------------------ */
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85 /** Get the session ID with any worker ID.
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86 *
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87 * @param clusterId
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88 * @param request
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89 * @return sessionId plus any worker ID.
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90 */
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91 public String getNodeId(String clusterId,HttpServletRequest request)
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92 {
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93 // used in Ajp13Parser
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94 String worker=request==null?null:(String)request.getAttribute("org.eclipse.jetty.ajp.JVMRoute");
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95 if (worker!=null)
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96 return clusterId+'.'+worker;
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97
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98 if (_workerName!=null)
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99 return clusterId+'.'+_workerName;
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100
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101 return clusterId;
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102 }
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103
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104 /* ------------------------------------------------------------ */
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105 /** Get the session ID without any worker ID.
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106 *
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107 * @param nodeId the node id
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108 * @return sessionId without any worker ID.
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109 */
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110 public String getClusterId(String nodeId)
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111 {
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112 int dot=nodeId.lastIndexOf('.');
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113 return (dot>0)?nodeId.substring(0,dot):nodeId;
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114 }
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115
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116 /* ------------------------------------------------------------ */
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117 @Override
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118 protected void doStart() throws Exception
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119 {
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120 super.doStart();
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121 }
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122
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123 /* ------------------------------------------------------------ */
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124 @Override
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125 protected void doStop() throws Exception
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126 {
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127 _sessions.clear();
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128 super.doStop();
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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 * @see SessionIdManager#idInUse(String)
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134 */
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135 public boolean idInUse(String id)
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136 {
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137 synchronized (this)
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138 {
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139 return _sessions.containsKey(id);
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140 }
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141 }
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142
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143 /* ------------------------------------------------------------ */
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144 /**
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145 * @see SessionIdManager#addSession(HttpSession)
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146 */
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147 public void addSession(HttpSession session)
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148 {
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149 String id = getClusterId(session.getId());
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150 WeakReference<HttpSession> ref = new WeakReference<HttpSession>(session);
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151
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152 synchronized (this)
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153 {
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154 Set<WeakReference<HttpSession>> sessions = _sessions.get(id);
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155 if (sessions==null)
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156 {
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157 sessions=new HashSet<WeakReference<HttpSession>>();
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158 _sessions.put(id,sessions);
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159 }
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160 sessions.add(ref);
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161 }
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162 }
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163
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164 /* ------------------------------------------------------------ */
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165 /**
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166 * @see SessionIdManager#removeSession(HttpSession)
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167 */
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168 public void removeSession(HttpSession session)
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169 {
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170 String id = getClusterId(session.getId());
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171
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172 synchronized (this)
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173 {
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174 Collection<WeakReference<HttpSession>> sessions = _sessions.get(id);
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175 if (sessions!=null)
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176 {
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177 for (Iterator<WeakReference<HttpSession>> iter = sessions.iterator(); iter.hasNext();)
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178 {
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179 WeakReference<HttpSession> ref = iter.next();
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180 HttpSession s=ref.get();
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181 if (s==null)
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182 {
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183 iter.remove();
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184 continue;
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185 }
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186 if (s==session)
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187 {
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188 iter.remove();
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189 break;
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190 }
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191 }
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192 if (sessions.isEmpty())
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193 _sessions.remove(id);
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194 }
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195 }
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196 }
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197
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198 /* ------------------------------------------------------------ */
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199 /**
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200 * @see SessionIdManager#invalidateAll(String)
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201 */
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202 public void invalidateAll(String id)
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203 {
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204 Collection<WeakReference<HttpSession>> sessions;
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205 synchronized (this)
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206 {
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207 sessions = _sessions.remove(id);
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208 }
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209
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210 if (sessions!=null)
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211 {
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212 for (WeakReference<HttpSession> ref: sessions)
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213 {
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214 AbstractSession session=(AbstractSession)ref.get();
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215 if (session!=null && session.isValid())
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216 session.invalidate();
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217 }
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218 sessions.clear();
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219 }
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220 }
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221
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222 }