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annotate src/org/eclipse/jetty/server/Server.java @ 875:b9aa175d9a29

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remove Server.getThreadPool()
author Franklin Schmidt <fschmidt@gmail.com>
date Tue, 04 Oct 2016 13:45:47 -0600
parents 4f5547d29192
children 2efdb98f3543
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rev   line source
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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.IOException;
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22 import java.net.InetSocketAddress;
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23 import java.util.Enumeration;
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24 import java.util.concurrent.LinkedBlockingQueue;
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25 import java.util.concurrent.ThreadPoolExecutor;
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26 import java.util.concurrent.TimeUnit;
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27
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28 import javax.servlet.ServletException;
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29 import javax.servlet.http.HttpServletRequest;
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30 import javax.servlet.http.HttpServletResponse;
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31
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32 import org.eclipse.jetty.http.HttpGenerator;
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33 import org.eclipse.jetty.http.HttpURI;
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34 import org.eclipse.jetty.server.handler.HandlerWrapper;
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35 import org.eclipse.jetty.server.nio.SelectChannelConnector;
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36 import org.eclipse.jetty.util.Attributes;
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37 import org.eclipse.jetty.util.AttributesMap;
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38 import org.eclipse.jetty.util.LazyList;
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39 import org.eclipse.jetty.util.MultiException;
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40 import org.eclipse.jetty.util.TypeUtil;
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41 import org.eclipse.jetty.util.URIUtil;
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42 import org.eclipse.jetty.util.component.Destroyable;
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43 import org.eclipse.jetty.util.component.LifeCycle;
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44 import org.slf4j.Logger;
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45 import org.slf4j.LoggerFactory;
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46 import org.eclipse.jetty.util.thread.ShutdownThread;
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47
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48 /* ------------------------------------------------------------ */
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49 /** Jetty HTTP Servlet Server.
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50 * This class is the main class for the Jetty HTTP Servlet server.
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51 * It aggregates Connectors (HTTP request receivers) and request Handlers.
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52 * The server is itself a handler and a ThreadPool. Connectors use the ThreadPool methods
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53 * to run jobs that will eventually call the handle method.
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54 *
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55 * @org.apache.xbean.XBean description="Creates an embedded Jetty web server"
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56 */
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57 public class Server extends HandlerWrapper implements Attributes
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58 {
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59 private static final Logger LOG = LoggerFactory.getLogger(Server.class);
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60
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61 private static final String __version = "8";
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62
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63 private final AttributesMap _attributes = new AttributesMap();
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64 public final ThreadPoolExecutor threadPool;
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65 private Connector[] _connectors;
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66 private boolean _sendServerVersion = true; //send Server: header
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67 private boolean _sendDateHeader = false; //send Date: header
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68 private int _graceful=0;
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69 private boolean _stopAtShutdown;
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70 private boolean _dumpAfterStart=false;
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71 private boolean _dumpBeforeStop=false;
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72 private boolean _uncheckedPrintWriter=false;
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73
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74
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75 /* ------------------------------------------------------------ */
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76 /** Convenience constructor
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77 * Creates server and a {@link SelectChannelConnector} at the passed port.
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78 */
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79 public Server(int port)
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80 {
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81 setServer(this);
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82
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83 Connector connector=new SelectChannelConnector();
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84 connector.setPort(port);
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85 setConnectors(new Connector[]{connector});
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86
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87 threadPool = new ThreadPoolExecutor(256, 256, 60, TimeUnit.SECONDS, new LinkedBlockingQueue<Runnable>());
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88 }
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89
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90
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91 /* ------------------------------------------------------------ */
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92 public static String getVersion()
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93 {
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94 return __version;
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95 }
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96
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97 /* ------------------------------------------------------------ */
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98 public boolean getStopAtShutdown()
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99 {
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100 return _stopAtShutdown;
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101 }
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102
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103 /* ------------------------------------------------------------ */
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104 public void setStopAtShutdown(boolean stop)
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105 {
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106 //if we now want to stop
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107 if (stop)
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108 {
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109 //and we weren't stopping before
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110 if (!_stopAtShutdown)
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111 {
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112 //only register to stop if we're already started (otherwise we'll do it in doStart())
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113 if (isStarted())
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114 ShutdownThread.register(this);
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115 }
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116 }
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117 else
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118 ShutdownThread.deregister(this);
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119
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120 _stopAtShutdown=stop;
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121 }
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122
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123 /* ------------------------------------------------------------ */
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124 /**
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125 * @return Returns the connectors.
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126 */
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127 public Connector[] getConnectors()
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128 {
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129 return _connectors;
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130 }
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131
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132 /* ------------------------------------------------------------ */
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133 public void addConnector(Connector connector)
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134 {
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135 setConnectors((Connector[])LazyList.addToArray(getConnectors(), connector, Connector.class));
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136 }
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137
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138 /* ------------------------------------------------------------ */
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139 /**
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140 * Conveniance method which calls {@link #getConnectors()} and {@link #setConnectors(Connector[])} to
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141 * remove a connector.
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142 * @param connector The connector to remove.
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143 */
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144 public void removeConnector(Connector connector) {
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145 setConnectors((Connector[])LazyList.removeFromArray (getConnectors(), connector));
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146 }
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147
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148 /* ------------------------------------------------------------ */
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149 /** Set the connectors for this server.
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150 * Each connector has this server set as it's ThreadPool and its Handler.
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151 * @param connectors The connectors to set.
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152 */
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153 public void setConnectors(Connector[] connectors)
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154 {
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155 if (connectors!=null)
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156 {
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157 for (int i=0;i<connectors.length;i++)
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158 connectors[i].setServer(this);
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159 }
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160
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161 _connectors = connectors;
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162 }
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163
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164 /**
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165 * @return true if {@link #dumpStdErr()} is called after starting
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166 */
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167 public boolean isDumpAfterStart()
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168 {
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169 return _dumpAfterStart;
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170 }
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171
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172 /**
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173 * @param dumpAfterStart true if {@link #dumpStdErr()} is called after starting
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174 */
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175 public void setDumpAfterStart(boolean dumpAfterStart)
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176 {
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177 _dumpAfterStart = dumpAfterStart;
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178 }
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179
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180 /**
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181 * @return true if {@link #dumpStdErr()} is called before stopping
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182 */
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183 public boolean isDumpBeforeStop()
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184 {
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185 return _dumpBeforeStop;
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186 }
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187
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188 /**
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189 * @param dumpBeforeStop true if {@link #dumpStdErr()} is called before stopping
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190 */
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191 public void setDumpBeforeStop(boolean dumpBeforeStop)
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192 {
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193 _dumpBeforeStop = dumpBeforeStop;
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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 @Override
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200 protected void doStart() throws Exception
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201 {
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202 if (getStopAtShutdown())
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203 {
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204 ShutdownThread.register(this);
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205 }
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206
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207 ShutdownMonitor.getInstance().start(); // initialize
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208
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209 LOG.info("jetty-"+__version);
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210 HttpGenerator.setServerVersion(__version);
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211
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212 MultiException mex=new MultiException();
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213
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214 try
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215 {
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216 super.doStart();
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217 }
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218 catch(Throwable e)
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219 {
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220 mex.add(e);
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221 }
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222
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223 if (_connectors!=null && mex.size()==0)
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224 {
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225 for (int i=0;i<_connectors.length;i++)
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226 {
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227 try{_connectors[i].start();}
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228 catch(Throwable e)
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229 {
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230 mex.add(e);
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231 }
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232 }
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233 }
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234
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235 if (isDumpAfterStart())
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236 dumpStdErr();
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237
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238 mex.ifExceptionThrow();
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239 }
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240
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241 /* ------------------------------------------------------------ */
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242 @Override
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243 protected void doStop() throws Exception
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244 {
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245 if (isDumpBeforeStop())
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246 dumpStdErr();
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247
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248 MultiException mex=new MultiException();
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249
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250 if (_graceful>0)
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251 {
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252 if (_connectors!=null)
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253 {
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254 for (int i=_connectors.length;i-->0;)
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255 {
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256 LOG.info("Graceful shutdown {}",_connectors[i]);
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257 try{_connectors[i].close();}catch(Throwable e){mex.add(e);}
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258 }
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259 }
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260
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261 Handler[] contexts = getChildHandlersByClass(Graceful.class);
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262 for (int c=0;c<contexts.length;c++)
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263 {
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264 Graceful context=(Graceful)contexts[c];
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265 LOG.info("Graceful shutdown {}",context);
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266 context.setShutdown(true);
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267 }
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268 Thread.sleep(_graceful);
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269 }
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270
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271 if (_connectors!=null)
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272 {
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273 for (int i=_connectors.length;i-->0;)
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274 try{_connectors[i].stop();}catch(Throwable e){mex.add(e);}
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275 }
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276
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277 threadPool.shutdownNow();
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278
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279 try {super.doStop(); } catch(Throwable e) { mex.add(e);}
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280
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281 mex.ifExceptionThrow();
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282
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283 if (getStopAtShutdown())
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284 ShutdownThread.deregister(this);
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285 }
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286
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287 /* ------------------------------------------------------------ */
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288 /* Handle a request from a connection.
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289 * Called to handle a request on the connection when either the header has been received,
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290 * or after the entire request has been received (for short requests of known length), or
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291 * on the dispatch of an async request.
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292 */
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293 public void handle(AbstractHttpConnection connection) throws IOException, ServletException
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294 {
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295 final String target=connection.getRequest().getPathInfo();
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296 final Request request=connection.getRequest();
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297 final Response response=connection.getResponse();
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298
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299 if (LOG.isDebugEnabled())
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300 {
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301 LOG.debug("REQUEST "+target+" on "+connection);
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302 handle(target, request, request, response);
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303 LOG.debug("RESPONSE "+target+" "+connection.getResponse().getStatus()+" handled="+request.isHandled());
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304 }
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305 else
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306 handle(target, request, request, response);
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307 }
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308
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309 /* ------------------------------------------------------------ */
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310 /* Handle a request from a connection.
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311 * Called to handle a request on the connection when either the header has been received,
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312 * or after the entire request has been received (for short requests of known length), or
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313 * on the dispatch of an async request.
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314 */
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315 public void handleAsync(AbstractHttpConnection connection) throws IOException, ServletException
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316 {
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317 final AsyncContinuation async = connection.getRequest().getAsyncContinuation();
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318 final AsyncContinuation.AsyncEventState state = async.getAsyncEventState();
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319
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320 final Request baseRequest=connection.getRequest();
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321 final String path=state.getPath();
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322
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323 if (path!=null)
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324 {
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325 // this is a dispatch with a path
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326 final String contextPath=state.getServletContext().getContextPath();
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327 HttpURI uri = new HttpURI(URIUtil.addPaths(contextPath,path));
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328 baseRequest.setUri(uri);
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329 baseRequest.setRequestURI(null);
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330 baseRequest.setPathInfo(baseRequest.getRequestURI());
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331 if (uri.getQuery()!=null)
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332 baseRequest.mergeQueryString(uri.getQuery()); //we have to assume dispatch path and query are UTF8
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333 }
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334
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335 final String target=baseRequest.getPathInfo();
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336 final HttpServletRequest request=(HttpServletRequest)async.getRequest();
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337 final HttpServletResponse response=(HttpServletResponse)async.getResponse();
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338
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339 if (LOG.isDebugEnabled())
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340 {
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341 LOG.debug("REQUEST "+target+" on "+connection);
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342 handle(target, baseRequest, request, response);
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343 LOG.debug("RESPONSE "+target+" "+connection.getResponse().getStatus());
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344 }
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345 else
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346 handle(target, baseRequest, request, response);
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347
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348 }
802
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349
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350
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351 /* ------------------------------------------------------------ */
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352 public void join() throws InterruptedException
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353 {
875
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354 threadPool.awaitTermination(Long.MAX_VALUE, TimeUnit.MILLISECONDS);
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355 }
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356
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357 /* ------------------------------------------------------------ */
802
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358
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359 /* ------------------------------------------------------------ */
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360 public void setSendServerVersion (boolean sendServerVersion)
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361 {
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362 _sendServerVersion = sendServerVersion;
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363 }
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364
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diff changeset
365 /* ------------------------------------------------------------ */
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366 public boolean getSendServerVersion()
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367 {
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368 return _sendServerVersion;
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369 }
802
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370
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diff changeset
371 /* ------------------------------------------------------------ */
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372 /**
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373 * @param sendDateHeader
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374 */
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375 public void setSendDateHeader(boolean sendDateHeader)
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parents: 802
diff changeset
376 {
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377 _sendDateHeader = sendDateHeader;
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diff changeset
378 }
802
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379
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diff changeset
380 /* ------------------------------------------------------------ */
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381 public boolean getSendDateHeader()
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382 {
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383 return _sendDateHeader;
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384 }
802
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385
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diff changeset
386 /* ------------------------------------------------------------ */
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parents: 802
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387 /**
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diff changeset
388 */
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diff changeset
389 @Deprecated
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390 public int getMaxCookieVersion()
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391 {
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392 return 1;
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parents: 802
diff changeset
393 }
802
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394
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diff changeset
395 /* ------------------------------------------------------------ */
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parents: 802
diff changeset
396 /**
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diff changeset
397 */
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diff changeset
398 @Deprecated
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diff changeset
399 public void setMaxCookieVersion(int maxCookieVersion)
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parents: 802
diff changeset
400 {
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parents: 802
diff changeset
401 }
802
3428c60d7cfc replace jetty jars with source
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parents:
diff changeset
402
812
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parents: 802
diff changeset
403 /* ------------------------------------------------------------ */
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parents: 802
diff changeset
404 /*
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diff changeset
405 * @see org.eclipse.util.AttributesMap#clearAttributes()
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parents: 802
diff changeset
406 */
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diff changeset
407 public void clearAttributes()
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diff changeset
408 {
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diff changeset
409 _attributes.clearAttributes();
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parents: 802
diff changeset
410 }
802
3428c60d7cfc replace jetty jars with source
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diff changeset
411
812
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diff changeset
412 /* ------------------------------------------------------------ */
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parents: 802
diff changeset
413 /*
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diff changeset
414 * @see org.eclipse.util.AttributesMap#getAttribute(java.lang.String)
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parents: 802
diff changeset
415 */
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parents: 802
diff changeset
416 public Object getAttribute(String name)
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diff changeset
417 {
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diff changeset
418 return _attributes.getAttribute(name);
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parents: 802
diff changeset
419 }
802
3428c60d7cfc replace jetty jars with source
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diff changeset
420
812
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parents: 802
diff changeset
421 /* ------------------------------------------------------------ */
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parents: 802
diff changeset
422 /*
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diff changeset
423 * @see org.eclipse.util.AttributesMap#getAttributeNames()
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parents: 802
diff changeset
424 */
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parents: 802
diff changeset
425 public Enumeration getAttributeNames()
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parents: 802
diff changeset
426 {
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parents: 802
diff changeset
427 return AttributesMap.getAttributeNamesCopy(_attributes);
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parents: 802
diff changeset
428 }
802
3428c60d7cfc replace jetty jars with source
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parents:
diff changeset
429
812
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parents: 802
diff changeset
430 /* ------------------------------------------------------------ */
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parents: 802
diff changeset
431 /*
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parents: 802
diff changeset
432 * @see org.eclipse.util.AttributesMap#removeAttribute(java.lang.String)
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parents: 802
diff changeset
433 */
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parents: 802
diff changeset
434 public void removeAttribute(String name)
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parents: 802
diff changeset
435 {
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parents: 802
diff changeset
436 _attributes.removeAttribute(name);
700317ba03ad remove SessionIdManager
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parents: 802
diff changeset
437 }
802
3428c60d7cfc replace jetty jars with source
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parents:
diff changeset
438
812
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parents: 802
diff changeset
439 /* ------------------------------------------------------------ */
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parents: 802
diff changeset
440 /*
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parents: 802
diff changeset
441 * @see org.eclipse.util.AttributesMap#setAttribute(java.lang.String, java.lang.Object)
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parents: 802
diff changeset
442 */
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diff changeset
443 public void setAttribute(String name, Object attribute)
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parents: 802
diff changeset
444 {
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diff changeset
445 _attributes.setAttribute(name, attribute);
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parents: 802
diff changeset
446 }
802
3428c60d7cfc replace jetty jars with source
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diff changeset
447
812
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parents: 802
diff changeset
448 /* ------------------------------------------------------------ */
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parents: 802
diff changeset
449 /**
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parents: 802
diff changeset
450 * @return the graceful
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parents: 802
diff changeset
451 */
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parents: 802
diff changeset
452 public int getGracefulShutdown()
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parents: 802
diff changeset
453 {
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diff changeset
454 return _graceful;
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parents: 802
diff changeset
455 }
802
3428c60d7cfc replace jetty jars with source
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diff changeset
456
812
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parents: 802
diff changeset
457 /* ------------------------------------------------------------ */
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parents: 802
diff changeset
458 /**
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parents: 802
diff changeset
459 * Set graceful shutdown timeout. If set, the internal <code>doStop()</code> method will not immediately stop the
700317ba03ad remove SessionIdManager
Franklin Schmidt <fschmidt@gmail.com>
parents: 802
diff changeset
460 * server. Instead, all {@link Connector}s will be closed so that new connections will not be accepted
700317ba03ad remove SessionIdManager
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parents: 802
diff changeset
461 * and all handlers that implement {@link Graceful} will be put into the shutdown mode so that no new requests
700317ba03ad remove SessionIdManager
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parents: 802
diff changeset
462 * will be accepted, but existing requests can complete. The server will then wait the configured timeout
700317ba03ad remove SessionIdManager
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parents: 802
diff changeset
463 * before stopping.
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parents: 802
diff changeset
464 * @param timeoutMS the milliseconds to wait for existing request to complete before stopping the server.
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parents: 802
diff changeset
465 *
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parents: 802
diff changeset
466 */
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parents: 802
diff changeset
467 public void setGracefulShutdown(int timeoutMS)
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parents: 802
diff changeset
468 {
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parents: 802
diff changeset
469 _graceful=timeoutMS;
700317ba03ad remove SessionIdManager
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parents: 802
diff changeset
470 }
802
3428c60d7cfc replace jetty jars with source
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parents:
diff changeset
471
812
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parents: 802
diff changeset
472 /* ------------------------------------------------------------ */
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parents: 802
diff changeset
473 @Override
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parents: 802
diff changeset
474 public String toString()
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Franklin Schmidt <fschmidt@gmail.com>
parents: 802
diff changeset
475 {
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parents: 802
diff changeset
476 return this.getClass().getName()+"@"+Integer.toHexString(hashCode());
700317ba03ad remove SessionIdManager
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parents: 802
diff changeset
477 }
802
3428c60d7cfc replace jetty jars with source
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parents:
diff changeset
478
812
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parents: 802
diff changeset
479 /* ------------------------------------------------------------ */
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parents: 802
diff changeset
480 @Override
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parents: 802
diff changeset
481 public void dump(Appendable out,String indent) throws IOException
700317ba03ad remove SessionIdManager
Franklin Schmidt <fschmidt@gmail.com>
parents: 802
diff changeset
482 {
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Franklin Schmidt <fschmidt@gmail.com>
parents: 802
diff changeset
483 dumpThis(out);
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parents: 802
diff changeset
484 dump(out,indent,TypeUtil.asList(getHandlers()),getBeans(),TypeUtil.asList(_connectors));
700317ba03ad remove SessionIdManager
Franklin Schmidt <fschmidt@gmail.com>
parents: 802
diff changeset
485 }
802
3428c60d7cfc replace jetty jars with source
Franklin Schmidt <fschmidt@gmail.com>
parents:
diff changeset
486
3428c60d7cfc replace jetty jars with source
Franklin Schmidt <fschmidt@gmail.com>
parents:
diff changeset
487
812
700317ba03ad remove SessionIdManager
Franklin Schmidt <fschmidt@gmail.com>
parents: 802
diff changeset
488 /* ------------------------------------------------------------ */
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parents: 802
diff changeset
489 public boolean isUncheckedPrintWriter()
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parents: 802
diff changeset
490 {
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Franklin Schmidt <fschmidt@gmail.com>
parents: 802
diff changeset
491 return _uncheckedPrintWriter;
700317ba03ad remove SessionIdManager
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parents: 802
diff changeset
492 }
802
3428c60d7cfc replace jetty jars with source
Franklin Schmidt <fschmidt@gmail.com>
parents:
diff changeset
493
812
700317ba03ad remove SessionIdManager
Franklin Schmidt <fschmidt@gmail.com>
parents: 802
diff changeset
494 /* ------------------------------------------------------------ */
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parents: 802
diff changeset
495 public void setUncheckedPrintWriter(boolean unchecked)
700317ba03ad remove SessionIdManager
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parents: 802
diff changeset
496 {
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parents: 802
diff changeset
497 _uncheckedPrintWriter=unchecked;
700317ba03ad remove SessionIdManager
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parents: 802
diff changeset
498 }
802
3428c60d7cfc replace jetty jars with source
Franklin Schmidt <fschmidt@gmail.com>
parents:
diff changeset
499
3428c60d7cfc replace jetty jars with source
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parents:
diff changeset
500
812
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parents: 802
diff changeset
501 /* ------------------------------------------------------------ */
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parents: 802
diff changeset
502 /* A handler that can be gracefully shutdown.
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parents: 802
diff changeset
503 * Called by doStop if a {@link #setGracefulShutdown} period is set.
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parents: 802
diff changeset
504 * TODO move this somewhere better
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parents: 802
diff changeset
505 */
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parents: 802
diff changeset
506 public interface Graceful extends Handler
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parents: 802
diff changeset
507 {
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parents: 802
diff changeset
508 public void setShutdown(boolean shutdown);
700317ba03ad remove SessionIdManager
Franklin Schmidt <fschmidt@gmail.com>
parents: 802
diff changeset
509 }
802
3428c60d7cfc replace jetty jars with source
Franklin Schmidt <fschmidt@gmail.com>
parents:
diff changeset
510
865
6b210bb66c63 remove ThreadPool
Franklin Schmidt <fschmidt@gmail.com>
parents: 864
diff changeset
511
6b210bb66c63 remove ThreadPool
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parents: 864
diff changeset
512 public final boolean isLowOnThreads()
6b210bb66c63 remove ThreadPool
Franklin Schmidt <fschmidt@gmail.com>
parents: 864
diff changeset
513 {
6b210bb66c63 remove ThreadPool
Franklin Schmidt <fschmidt@gmail.com>
parents: 864
diff changeset
514 // getActiveCount() locks the thread pool, so execute it last
875
b9aa175d9a29 remove Server.getThreadPool()
Franklin Schmidt <fschmidt@gmail.com>
parents: 867
diff changeset
515 return threadPool.getPoolSize() == threadPool.getMaximumPoolSize() &&
b9aa175d9a29 remove Server.getThreadPool()
Franklin Schmidt <fschmidt@gmail.com>
parents: 867
diff changeset
516 threadPool.getQueue().size() >= threadPool.getPoolSize() - threadPool.getActiveCount();
865
6b210bb66c63 remove ThreadPool
Franklin Schmidt <fschmidt@gmail.com>
parents: 864
diff changeset
517 }
6b210bb66c63 remove ThreadPool
Franklin Schmidt <fschmidt@gmail.com>
parents: 864
diff changeset
518
6b210bb66c63 remove ThreadPool
Franklin Schmidt <fschmidt@gmail.com>
parents: 864
diff changeset
519
812
700317ba03ad remove SessionIdManager
Franklin Schmidt <fschmidt@gmail.com>
parents: 802
diff changeset
520 /* ------------------------------------------------------------ */
700317ba03ad remove SessionIdManager
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parents: 802
diff changeset
521 public static void main(String...args) throws Exception
700317ba03ad remove SessionIdManager
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parents: 802
diff changeset
522 {
700317ba03ad remove SessionIdManager
Franklin Schmidt <fschmidt@gmail.com>
parents: 802
diff changeset
523 System.err.println(getVersion());
700317ba03ad remove SessionIdManager
Franklin Schmidt <fschmidt@gmail.com>
parents: 802
diff changeset
524 }
802
3428c60d7cfc replace jetty jars with source
Franklin Schmidt <fschmidt@gmail.com>
parents:
diff changeset
525 }