Mercurial > hg > digilib-old

annotate servlet3/src/main/java/digilib/servlet/Initialiser.java @ 1019:287e2d2d2ae8

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fix flicker in Firefox by leaving scaler background visible. add setSize and setRGB actions. disabled rotation slider for now (needs excact numerical input option).
author robcast
date Mon, 20 Feb 2012 22:23:07 +0100
parents b2d97b842612
children 2ee261676828
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1 /* Initialiser.java -- initalisation servlet for setup tasks
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2 *
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3 * Digital Image Library servlet components
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4 *
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5 * Copyright (C) 2004 Robert Casties (robcast@mail.berlios.de)
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6 *
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7 * This program is free software; you can redistribute it and/or modify it
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8 * under the terms of the GNU General Public License as published by the Free
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9 * Software Foundation; either version 2 of the License, or (at your option)
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10 * any later version.
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11 *
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12 * Please read license.txt for the full details. A copy of the GPL may be found
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13 * at http://www.gnu.org/copyleft/lgpl.html
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14 *
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15 * You should have received a copy of the GNU General Public License along with
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16 * this program; if not, write to the Free Software Foundation, Inc., 59 Temple
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17 * Place, Suite 330, Boston, MA 02111-1307 USA
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18 *
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19 * Created on 18.10.2004
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20 */
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21 package digilib.servlet;
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22
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23 import java.io.File;
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24 import java.io.OutputStream;
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25 import java.util.List;
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26
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27 import javax.imageio.ImageIO;
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28 import javax.servlet.ServletContext;
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29 import javax.servlet.ServletContextEvent;
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30 import javax.servlet.ServletContextListener;
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31 import javax.servlet.ServletRequestEvent;
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32 import javax.servlet.ServletRequestListener;
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33 import javax.servlet.annotation.WebListener;
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34
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35 import org.apache.log4j.Logger;
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36 import org.apache.log4j.xml.DOMConfigurator;
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37
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38 import digilib.auth.AuthOps;
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39 import digilib.auth.XMLAuthOps;
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40 import digilib.image.DocuImage;
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41 import digilib.io.AliasingDocuDirCache;
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42 import digilib.io.DocuDirCache;
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43 import digilib.io.FileOps.FileClass;
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44 import digilib.util.DigilibJobCenter;
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45
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46 /**
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47 * Singleton initalisation listener for setup tasks and resources.
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48 *
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49 * @author casties
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50 *
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51 */
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52 @WebListener
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53 public class Initialiser implements ServletContextListener, ServletRequestListener {
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54
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55
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56 /** servlet version */
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57 public static final String version = "0.3";
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58
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59 /** gengeral logger for this class */
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60 private static Logger logger = Logger.getLogger("digilib.init");
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61
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62 /** DocuDirCache instance */
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63 DocuDirCache dirCache;
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64
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65 /** DigilibConfiguration instance */
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66 DigilibServletConfiguration dlConfig;
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67
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68 /** Executor for digilib image jobs (AsyncServletWorker doesn't return anything) */
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69 DigilibJobCenter<DocuImage> imageEx;
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70
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71 /** Executor for PDF jobs */
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72 DigilibJobCenter<OutputStream> pdfEx;
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73
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74 /** Executor for PDF image jobs */
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75 DigilibJobCenter<DocuImage> pdfImageEx;
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76
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77 /**
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78 * Initialisation on first run.
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79 */
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80 public void contextInitialized(ServletContextEvent cte) {
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81 ServletContext context = cte.getServletContext();
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82
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83 System.out.println("***** Digital Image Library Initialiser (version "
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84 + version + ") *****");
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85
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86 // see if there is a Configuration instance
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87 dlConfig = (DigilibServletConfiguration) context.getAttribute("digilib.servlet.configuration");
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88 if (dlConfig == null) {
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89 // create new Configuration
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90 try {
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91 dlConfig = new DigilibServletConfiguration(context);
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92
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93 /*
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94 * further initialization
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95 */
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96
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97 // set up the logger
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98 File logConf = ServletOps.getConfigFile((File) dlConfig
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99 .getValue("log-config-file"), context);
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100 DOMConfigurator.configure(logConf.getAbsolutePath());
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101 dlConfig.setValue("log-config-file", logConf);
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102 // say hello in the log file
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103 logger
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104 .info("***** Digital Image Library Initialiser (version "
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105 + version + ") *****");
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106 // directory cache
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107 String[] bd = (String[]) dlConfig.getValue("basedir-list");
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108 FileClass[] fcs = { FileClass.IMAGE, FileClass.TEXT };
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109 if (dlConfig.getAsBoolean("use-mapping")) {
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110 // with mapping file
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111 File mapConf = ServletOps.getConfigFile((File) dlConfig
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112 .getValue("mapping-file"), context);
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113 dirCache = new AliasingDocuDirCache(bd, fcs, mapConf,
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114 dlConfig);
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115 dlConfig.setValue("mapping-file", mapConf);
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116 } else {
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117 // without mapping
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118 dirCache = new DocuDirCache(bd, fcs, dlConfig);
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119 }
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120 dlConfig.setValue("servlet.dir.cache", dirCache);
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121 // useAuthentication
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122 if (dlConfig.getAsBoolean("use-authorization")) {
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123 // DB version
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124 //authOp = new DBAuthOpsImpl(util);
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125 // XML version
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126 File authConf = ServletOps.getConfigFile((File) dlConfig
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127 .getValue("auth-file"), context);
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128 AuthOps authOp = new XMLAuthOps(authConf);
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129 dlConfig.setValue("servlet.auth.op", authOp);
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130 dlConfig.setValue("auth-file", authConf);
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131 }
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132 // DocuImage class
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133 DocuImage di = DigilibConfiguration.getDocuImageInstance();
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134 dlConfig.setValue("servlet.docuimage.class", di.getClass().getName());
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135 // disk cache for image toolkit
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136 boolean dc = dlConfig.getAsBoolean("img-diskcache-allowed");
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137 // TODO: methods for all toolkits?
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138 ImageIO.setUseCache(dc);
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139 // digilib worker threads
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140 int nt = dlConfig.getAsInt("worker-threads");
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141 int mt = dlConfig.getAsInt("max-waiting-threads");
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142 imageEx = new DigilibJobCenter<DocuImage>(nt, mt, false, "servlet.worker.imageexecutor");
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143 dlConfig.setValue("servlet.worker.imageexecutor", imageEx);
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144 // digilib worker timeout
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145 long to = dlConfig.getAsInt("worker-timeout");
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146 AsyncServletWorker.setTimeout(to);
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147 // PDF worker threads
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148 int pnt = dlConfig.getAsInt("pdf-worker-threads");
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149 int pmt = dlConfig.getAsInt("pdf-max-waiting-threads");
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150 pdfEx = new DigilibJobCenter<OutputStream>(pnt, pmt, false, "servlet.worker.pdfexecutor");
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151 dlConfig.setValue("servlet.worker.pdfexecutor", pdfEx);
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152 // PDF image worker threads
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153 int pint = dlConfig.getAsInt("pdf-image-worker-threads");
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154 int pimt = dlConfig.getAsInt("pdf-image-max-waiting-threads");
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155 pdfImageEx = new DigilibJobCenter<DocuImage>(pint, pimt, false, "servlet.worker.pdfimageexecutor");
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156 dlConfig.setValue("servlet.worker.pdfimageexecutor", pdfImageEx);
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157 // set as the servlets main config
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158 context.setAttribute("digilib.servlet.configuration", dlConfig);
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159
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160 } catch (Exception e) {
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161 logger.error("Error in initialisation: ", e);
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162 }
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163 } else {
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164 // say hello in the log file
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165 logger.info("***** Digital Image Library Initialiser (version "
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166 + version + ") *****");
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167 logger.warn("Already initialised!");
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168 }
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169 }
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170
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171 /** clean up local resources
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172 *
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173 */
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174 public void contextDestroyed(ServletContextEvent arg0) {
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175 logger.info("Initialiser shutting down.");
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176 if (dirCache != null) {
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177 // shut down dirCache?
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178 dirCache = null;
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179 }
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180 if (imageEx != null) {
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181 // shut down image thread pool
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182 List<Runnable> rj = imageEx.shutdownNow();
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183 int nrj = rj.size();
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184 if (nrj > 0) {
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185 logger.error("Still running threads when shutting down image job queue: "+nrj);
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186 }
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187 }
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188 if (pdfEx != null) {
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189 // shut down pdf thread pool
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190 List<Runnable> rj = pdfEx.shutdownNow();
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191 int nrj = rj.size();
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192 if (nrj > 0) {
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193 logger.error("Still running threads when shutting down PDF job queue: "+nrj);
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194 }
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195 }
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196 if (pdfImageEx != null) {
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197 // shut down pdf image thread pool
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198 List<Runnable> rj = pdfImageEx.shutdownNow();
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199 int nrj = rj.size();
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200 if (nrj > 0) {
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201 logger.error("Still running threads when shutting down PDF-image job queue: "+nrj);
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202 }
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203 }
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204 }
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205
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206 @Override
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207 public void requestDestroyed(ServletRequestEvent arg0) {
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208 int i = dlConfig.openRequestCnt.decrementAndGet();
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209 logger.debug("ServletRequest destroyed. (cnt="+i+")");
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210 }
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211
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212 @Override
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213 public void requestInitialized(ServletRequestEvent arg0) {
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214 dlConfig.webappRequestCnt.incrementAndGet();
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215 int i = dlConfig.openRequestCnt.incrementAndGet();
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216 logger.debug("ServletRequest created. (cnt="+i+")");
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217 }
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218
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219 }