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annotate artifact-database/src/main/java/de/intevation/artifactdatabase/rest/Standalone.java @ 262:5cab846eb2a3

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flys/issue65: Set number of max. restlet threads to 1024 and make it configurable. artifacts/trunk@1943 c6561f87-3c4e-4783-a992-168aeb5c3f6f
author Sascha L. Teichmann <sascha.teichmann@intevation.de>
date Wed, 18 May 2011 10:10:11 +0000
parents b2115f484edb
children c0fb96f88ad1
rev   line source
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1 /*
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2 * Copyright (c) 2010 by Intevation GmbH
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3 *
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4 * This program is free software under the LGPL (>=v2.1)
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5 * Read the file LGPL.txt coming with the software for details
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6 * or visit http://www.gnu.org/licenses/ if it does not exist.
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7 */
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8
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9 package de.intevation.artifactdatabase.rest;
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10
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11 import de.intevation.artifacts.common.utils.Config;
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12
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13 import de.intevation.artifacts.ArtifactDatabase;
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14
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15 import org.apache.log4j.Logger;
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16
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17 import org.restlet.Component;
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18 import org.restlet.Server;
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19
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20 import org.restlet.data.Protocol;
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21
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22 /**
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23 * Starts an HTTP server bound to a RestApp.
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24 * The server (binding interface and port) is configure via the
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25 * global configuration.
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26 *
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27 * @author <a href="mailto:sascha.teichmann@intevation">Sascha L. Teichmann</a>
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28 */
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29 public class Standalone
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30 {
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31 private static Logger logger = Logger.getLogger(Standalone.class);
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32
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33 /**
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34 * XPath to figure out the port where to listen from the
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35 * global configuration.
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36 */
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37 public static final String REST_PORT =
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38 "/artifact-database/rest-server/port/text()";
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40 /**
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41 * XPath to figure out from global configuration
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42 * which network interface to use to bind the HTTP server.
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43 */
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44 public static final String LISTEN_INTERFACE =
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45 "/artifact-database/rest-server/listen/text()";
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47 /**
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48 * The default port of the HTTP server: 8181
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49 */
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50 public static final int DEFAULT_PORT = 8181;
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51
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52 public static final String MAX_THREADS =
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53 "/artifact-database/rest-server/max-threads/text()";
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54
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55 public static final String MAX_THREADS_DEFAULT =
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56 "1024";
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57
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58 /**
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59 * Builds a RestApp wrapped around the given artifact database,
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60 * and bind this application to HTTP server. The HTTP server
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61 * is configured by the global configuration. If no port is
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62 * given by the configuration the default port is used. If
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63 * no interface is given the HTTP server is reachable from
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64 * all interfaces.
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65 * @param db The artifact database to be exposed via the
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66 * REST application.
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67 */
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68 public static void startAsServer(ArtifactDatabase db) {
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69 String portString = Config.getStringXPath(REST_PORT);
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70 String listenString = Config.getStringXPath(LISTEN_INTERFACE);
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71 String maxThreads = Config.getStringXPath(MAX_THREADS);
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72
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73 int port = DEFAULT_PORT;
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74
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75 if (portString != null) {
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76 try {
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77 port = Integer.parseInt(portString);
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78 if (port < 0) {
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79 throw new NumberFormatException();
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80 }
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81 }
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82 catch (NumberFormatException nfe) {
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83 logger.error("rest port is not a positive integer value.", nfe);
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84 return;
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85 }
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86 }
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87
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88 RestApp app = new RestApp(db);
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89
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90 Component component = new Component();
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91
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92 Server server = null;
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93
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94 if (listenString != null) {
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95 server = new Server(Protocol.HTTP, listenString, port);
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96 }
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97 else {
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98 server = new Server(Protocol.HTTP, port);
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99 }
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101 component.getServers().add(server);
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102
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103 server.getContext().getParameters().add(
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104 "maxThreads", maxThreads != null
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105 ? maxThreads
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106 : MAX_THREADS_DEFAULT);
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107
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108 component.getDefaultHost().attach(app);
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109
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110 logger.info("Starting rest HTTP server on "
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111 + (listenString != null ? listenString : "*")
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112 + ":" + port);
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113
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114 try {
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115 component.start();
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116 }
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117 catch (Exception e) {
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118 logger.error(e.getLocalizedMessage(), e);
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119 }
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120 }
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121 }
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122 // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 :
http://dive4elements.wald.intevation.org