Mercurial > dive4elements > framework
comparison artifact-database/src/main/java/org/dive4elements/artifactdatabase/rest/Standalone.java @ 473:d0ac790a6c89 dive4elements-move
Moved directories to org.dive4elements
| author | Sascha L. Teichmann <teichmann@intevation.de> |
|---|---|
| date | Thu, 25 Apr 2013 10:57:18 +0200 |
| parents | artifact-database/src/main/java/de/intevation/artifactdatabase/rest/Standalone.java@d52947ce8629 |
| children | 415df0fc4fa1 |
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| 472:783cc1b6b615 | 473:d0ac790a6c89 |
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| 1 /* | |
| 2 * Copyright (c) 2010 by Intevation GmbH | |
| 3 * | |
| 4 * This program is free software under the LGPL (>=v2.1) | |
| 5 * Read the file LGPL.txt coming with the software for details | |
| 6 * or visit http://www.gnu.org/licenses/ if it does not exist. | |
| 7 */ | |
| 8 | |
| 9 package de.intevation.artifactdatabase.rest; | |
| 10 | |
| 11 import de.intevation.artifacts.common.utils.XMLUtils; | |
| 12 | |
| 13 import de.intevation.artifacts.ArtifactDatabase; | |
| 14 | |
| 15 import org.apache.log4j.Logger; | |
| 16 | |
| 17 import org.restlet.Component; | |
| 18 import org.restlet.Server; | |
| 19 | |
| 20 import org.restlet.data.Protocol; | |
| 21 | |
| 22 import org.w3c.dom.Document; | |
| 23 | |
| 24 /** | |
| 25 * Starts an HTTP server bound to a RestApp. | |
| 26 * The server (binding interface and port) is configure via the | |
| 27 * global configuration. | |
| 28 * | |
| 29 * @author <a href="mailto:sascha.teichmann@intevation">Sascha L. Teichmann</a> | |
| 30 */ | |
| 31 public class Standalone | |
| 32 implements HTTPServer | |
| 33 { | |
| 34 private static Logger logger = Logger.getLogger(Standalone.class); | |
| 35 | |
| 36 /** | |
| 37 * XPath to figure out the port where to listen from the | |
| 38 * global configuration. | |
| 39 */ | |
| 40 public static final String REST_PORT = | |
| 41 "/artifact-database/rest-server/port/text()"; | |
| 42 | |
| 43 /** | |
| 44 * XPath to figure out from global configuration | |
| 45 * which network interface to use to bind the HTTP server. | |
| 46 */ | |
| 47 public static final String LISTEN_INTERFACE = | |
| 48 "/artifact-database/rest-server/listen/text()"; | |
| 49 | |
| 50 /** | |
| 51 * The default port of the HTTP server: 8181 | |
| 52 */ | |
| 53 public static final int DEFAULT_PORT = 8181; | |
| 54 | |
| 55 public static final String MAX_THREADS = | |
| 56 "/artifact-database/rest-server/max-threads/text()"; | |
| 57 | |
| 58 public static final String MAX_THREADS_DEFAULT = | |
| 59 "1024"; | |
| 60 | |
| 61 protected int port; | |
| 62 | |
| 63 protected String listen; | |
| 64 | |
| 65 protected String maxThreads; | |
| 66 | |
| 67 public Standalone() { | |
| 68 } | |
| 69 | |
| 70 @Override | |
| 71 public void setup(Document document) { | |
| 72 String portString = XMLUtils.xpathString(document, REST_PORT, null); | |
| 73 | |
| 74 port = DEFAULT_PORT; | |
| 75 | |
| 76 if (portString != null) { | |
| 77 try { | |
| 78 port = Integer.parseInt(portString); | |
| 79 if (port < 0) { | |
| 80 throw new NumberFormatException(); | |
| 81 } | |
| 82 } | |
| 83 catch (NumberFormatException nfe) { | |
| 84 logger.error("rest port is not a positive integer value.", nfe); | |
| 85 return; | |
| 86 } | |
| 87 } | |
| 88 | |
| 89 listen = XMLUtils.xpathString(document, LISTEN_INTERFACE, null); | |
| 90 maxThreads = XMLUtils.xpathString(document, MAX_THREADS, null); | |
| 91 } | |
| 92 | |
| 93 protected Server createServer() { | |
| 94 return listen != null && listen.length() > 0 | |
| 95 ? new Server(Protocol.HTTP, listen, port) | |
| 96 : new Server(Protocol.HTTP, port); | |
| 97 } | |
| 98 | |
| 99 protected void logServerStart() { | |
| 100 logger.info("Starting " + getClass().getName() + " HTTP server on " | |
| 101 + (listen != null ? listen : "*") | |
| 102 + ":" + port); | |
| 103 } | |
| 104 | |
| 105 /** | |
| 106 * Builds a RestApp wrapped around the given artifact database, | |
| 107 * and bind this application to HTTP server. The HTTP server | |
| 108 * is configured by the global configuration. If no port is | |
| 109 * given by the configuration the default port is used. If | |
| 110 * no interface is given the HTTP server is reachable from | |
| 111 * all interfaces. | |
| 112 * @param db The artifact database to be exposed via the | |
| 113 * REST application. | |
| 114 */ | |
| 115 @Override | |
| 116 public void startAsServer(ArtifactDatabase db) { | |
| 117 | |
| 118 RestApp app = new RestApp(db); | |
| 119 | |
| 120 Component component = new Component(); | |
| 121 | |
| 122 Server server = createServer(); | |
| 123 | |
| 124 component.getServers().add(server); | |
| 125 | |
| 126 server.getContext().getParameters().add( | |
| 127 "maxThreads", maxThreads != null && maxThreads.length() > 0 | |
| 128 ? maxThreads | |
| 129 : MAX_THREADS_DEFAULT); | |
| 130 | |
| 131 component.getDefaultHost().attach(app); | |
| 132 | |
| 133 logServerStart(); | |
| 134 | |
| 135 try { | |
| 136 component.start(); | |
| 137 } | |
| 138 catch (Exception e) { | |
| 139 logger.error(e.getLocalizedMessage(), e); | |
| 140 } | |
| 141 } | |
| 142 } | |
| 143 // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 : |