Mercurial > dive4elements > framework

annotate artifact-database/src/main/java/de/intevation/artifactdatabase/rest/Standalone.java @ 114:19b86e27d0c3

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New XPath constants and methods that retrieve important nodes of the DESCRIBE document. artifacts/trunk@1328 c6561f87-3c4e-4783-a992-168aeb5c3f6f
author Ingo Weinzierl <ingo.weinzierl@intevation.de>
date Fri, 18 Feb 2011 14:21:32 +0000
parents 7fc0650f194c
children b2115f484edb
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.artifactdatabase.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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52 /**
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53 * Builds a RestApp wrapped around the given artifact database,
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54 * and bind this application to HTTP server. The HTTP server
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55 * is configured by the global configuration. If no port is
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56 * given by the configuration the default port is used. If
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57 * no interface is given the HTTP server is reachable from
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58 * all interfaces.
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59 * @param db The artifact database to be exposed via the
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60 * REST application.
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61 */
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62 public static void startAsServer(ArtifactDatabase db) {
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63 String portString = Config.getStringXPath(REST_PORT);
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64 String listenString = Config.getStringXPath(LISTEN_INTERFACE);
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66 int port = DEFAULT_PORT;
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67
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68 if (portString != null) {
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69 try {
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70 port = Integer.parseInt(portString);
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71 if (port < 0) {
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72 throw new NumberFormatException();
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73 }
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74 }
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75 catch (NumberFormatException nfe) {
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76 logger.error("rest port is not a positive integer value.", nfe);
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77 return;
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78 }
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79 }
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80
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81 RestApp app = new RestApp(db);
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82
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83 Component component = new Component();
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84
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85 Server server = null;
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86
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87 if (listenString != null) {
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88 server = new Server(Protocol.HTTP, listenString, port);
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89 }
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90 else {
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91 server = new Server(Protocol.HTTP, port);
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92 }
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94 component.getServers().add(server);
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95
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96 server.getContext().getParameters().add("maxThreads", "512");
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98 component.getDefaultHost().attach(app);
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99
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100 logger.info("Starting rest HTTP server on "
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101 + (listenString != null ? listenString : "*")
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102 + ":" + port);
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103
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104 try {
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105 component.start();
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106 }
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107 catch (Exception e) {
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108 logger.error(e.getLocalizedMessage(), e);
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109 }
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110 }
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111 }
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112 // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 :
http://dive4elements.wald.intevation.org