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annotate src/org/eclipse/jetty/server/Server.java @ 1020:6be43ef1eb96

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HttpHeaderValues uses StringCache
author Franklin Schmidt <fschmidt@gmail.com>
date Mon, 31 Oct 2016 22:24:41 -0600
parents 3fa54d9d19cd
children
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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.Collections;
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24 import java.util.Enumeration;
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25 import java.util.List;
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26 import java.util.ArrayList;
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27 import java.util.concurrent.LinkedBlockingQueue;
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28 import java.util.concurrent.ThreadPoolExecutor;
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29 import java.util.concurrent.TimeUnit;
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30
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31 import javax.servlet.ServletException;
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32
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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.BlockingChannelConnector;
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36 import org.eclipse.jetty.server.nio.SelectChannelConnector;
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37 import org.eclipse.jetty.util.LazyList;
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38 import org.eclipse.jetty.util.MultiException;
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39 import org.eclipse.jetty.util.TypeUtil;
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40 import org.eclipse.jetty.util.URIUtil;
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41 import org.eclipse.jetty.util.component.Destroyable;
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42 import org.eclipse.jetty.util.component.LifeCycle;
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43 import org.slf4j.Logger;
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44 import org.slf4j.LoggerFactory;
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45
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46 /* ------------------------------------------------------------ */
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47 /** Jetty HTTP Servlet Server.
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48 * This class is the main class for the Jetty HTTP Servlet server.
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49 * It aggregates Connectors (HTTP request receivers) and request Handlers.
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50 * The server is itself a handler and a ThreadPool. Connectors use the ThreadPool methods
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51 * to run jobs that will eventually call the handle method.
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52 *
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53 * @org.apache.xbean.XBean description="Creates an embedded Jetty web server"
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54 */
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55 public final class Server extends HandlerWrapper
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56 {
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57 private static final Logger LOG = LoggerFactory.getLogger(Server.class);
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58
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59 public static final String version = "8";
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60
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61 public final ThreadPoolExecutor threadPool = new ThreadPoolExecutor(256, 256, 60, TimeUnit.SECONDS, new LinkedBlockingQueue<Runnable>());
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62 final List<Connector> connectors = new ArrayList<Connector>();
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63
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64
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65 public Server() {
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66 setServer(this);
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67 }
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68
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69 public Server(int port)
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70 {
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71 setServer(this);
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72 // new SelectChannelConnector(this,port);
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73 new BlockingChannelConnector(this,port);
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74 }
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75
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76 @Override
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77 protected void doStart() throws Exception
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78 {
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79 LOG.info("jetty-"+version);
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80
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81 MultiException mex=new MultiException();
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82
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83 try
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84 {
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85 super.doStart();
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86 }
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87 catch(Throwable e)
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88 {
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89 mex.add(e);
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90 }
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91
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92 if (mex.size()==0) {
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93 for( Connector connector : connectors ) {
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94 try{connector.start();}
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95 catch(Throwable e)
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96 {
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97 mex.add(e);
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98 }
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99 }
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100 }
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101 mex.ifExceptionThrow();
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102 }
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103
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104 @Override
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105 protected void doStop() throws Exception
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106 {
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107 MultiException mex=new MultiException();
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108 /*
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109 if (_graceful>0)
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110 {
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111 LOG.info("Graceful shutdown {}",connector);
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112 try{connector.close();}catch(Throwable e){mex.add(e);}
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113
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114 Handler[] contexts = getChildHandlersByClass(Graceful.class);
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115 for (int c=0;c<contexts.length;c++)
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116 {
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117 Graceful context=(Graceful)contexts[c];
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118 LOG.info("Graceful shutdown {}",context);
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119 context.setShutdown(true);
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120 }
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121 Thread.sleep(_graceful);
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122 }
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123 */
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124 for( Connector connector : connectors ) {
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125 try{connector.stop();}catch(Throwable e){mex.add(e);}
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126 }
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127
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128 threadPool.shutdownNow();
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129
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130 try {super.doStop(); } catch(Throwable e) { mex.add(e);}
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131
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132 mex.ifExceptionThrow();
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133 }
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134
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135 /* ------------------------------------------------------------ */
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136 /* Handle a request from a connection.
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137 * Called to handle a request on the connection when either the header has been received,
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138 * or after the entire request has been received (for short requests of known length), or
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139 * on the dispatch of an async request.
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140 */
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141 public void handle(AbstractHttpConnection connection) throws IOException, ServletException
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142 {
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143 final String target = connection.getRequest().getPathInfo();
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144 final Request request = connection.getRequest();
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145 final Response response = connection.getResponse();
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146 handle(target, request, response);
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147 }
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148 /*
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149 public void join() throws InterruptedException
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150 {
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151 threadPool.awaitTermination(Long.MAX_VALUE, TimeUnit.MILLISECONDS);
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152 }
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153 */
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154
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155 @Override
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156 public void dump(Appendable out,String indent) throws IOException
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157 {
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158 dumpThis(out);
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159 dump(out,indent,TypeUtil.asList(getHandlers()),getBeans(),connectors);
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160 }
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162
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163 /* ------------------------------------------------------------ */
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164 /* A handler that can be gracefully shutdown.
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165 * Called by doStop if a {@link #setGracefulShutdown} period is set.
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166 * TODO move this somewhere better
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167 */
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168 /*
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169 public interface Graceful extends Handler
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170 {
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171 public void setShutdown(boolean shutdown);
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172 }
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173 */
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174
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175 public final boolean isLowOnThreads()
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176 {
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177 // getActiveCount() locks the thread pool, so execute it last
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178 return threadPool.getPoolSize() == threadPool.getMaximumPoolSize() &&
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179 threadPool.getQueue().size() >= threadPool.getPoolSize() - threadPool.getActiveCount();
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180 }
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181
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182
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183 public static void main(String...args) throws Exception
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184 {
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185 System.err.println(version);
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186 }
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187 }