1 /*
2 * Copyright (C) 2007 ETH Zurich
3 *
4 * This file is part of Fosstrak (www.fosstrak.org).
5 *
6 * Fosstrak is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU Lesser General Public
8 * License version 2.1, as published by the Free Software Foundation.
9 *
10 * Fosstrak is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 * Lesser General Public License for more details.
14 *
15 * You should have received a copy of the GNU Lesser General Public
16 * License along with Fosstrak; if not, write to the Free
17 * Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
18 * Boston, MA 02110-1301 USA
19 */
20
21 package org.fosstrak.epcis.repository;
22
23 import java.util.Enumeration;
24
25 import javax.servlet.ServletContext;
26 import javax.servlet.ServletContextEvent;
27 import javax.servlet.ServletContextListener;
28
29 import org.apache.commons.logging.Log;
30 import org.apache.commons.logging.LogFactory;
31
32 /**
33 * This RepositoryContextListener performs the initialization and termination
34 * (shut-down) work required by the Fosstrak EPCIS repository application, such as
35 * initializing the logging framework. This class receives notifications about
36 * changes to the servlet context of the web application, e.g., when the servlet
37 * context is loaded, or is about to be shut down.
38 *
39 * @author Marco Steybe
40 */
41 public class RepositoryContextListener implements ServletContextListener {
42
43 private static final Log LOG = LogFactory.getLog(RepositoryContextListener.class);
44
45 /**
46 * {@inheritDoc}
47 *
48 * @see javax.servlet.ServletContextListener#contextInitialized(javax.servlet.ServletContextEvent)
49 */
50 public void contextInitialized(ServletContextEvent event) {
51 ServletContext ctx = event.getServletContext();
52
53 /*
54 * Note: logging is initialized automatically by reading
55 * logging.properties and log4j.properties from the classpath.
56 * logging.properties is used to tell commons-logging to use LOG4J as
57 * its underlying logging toolkit; log4j.properties is used to configure
58 * LOG4J. To initialize LOG4J manually from LOG4J_CONFIG_LOCATION,
59 * un-comment the following code (LOG4J_CONFIG_LOCATION =
60 * "log4jConfigLocation") ...
61 */
62 // "log4jConfigLocation";
63 // String path = ctx.getRealPath("/");
64 // String log4jCfg = ctx.getInitParameter(LOG4J_CONFIG_LOCATION);
65 // // initialize Log4j
66 // if (log4jCfg != null) {
67 // // if no log4j properties file found, then do not try
68 // // to load it (the application runs without logging)
69 // PropertyConfigurator.configure(path + log4jCfg);
70 // }
71 // log = LogFactory.getLog(this.getClass());
72
73 // set a system property to configure CXF to use LOG4J
74 System.setProperty("org.apache.cxf.Logger", "org.apache.cxf.common.logging.Log4jLogger");
75
76 LOG.info("Starting Fosstrak EPCIS Repository application");
77
78 if (LOG.isDebugEnabled()) {
79 LOG.debug("Logging application context init-parameters:");
80 Enumeration<?> e = ctx.getInitParameterNames();
81 while (e.hasMoreElements()) {
82 String param = (String) e.nextElement();
83 LOG.debug(param + "=" + ctx.getInitParameter(param));
84 }
85 }
86 }
87
88 /**
89 * {@inheritDoc}
90 *
91 * @see javax.servlet.ServletContextListener#contextDestroyed(javax.servlet.ServletContextEvent)
92 */
93 public void contextDestroyed(ServletContextEvent event) {
94 LOG.info("Fosstrak EPCIS Repository application shut down\n######################################");
95 LogFactory.releaseAll();
96 }
97 }