/*
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Transit - Remote procedure calls made simple
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Copyright (c) 2012 Ulrich Hilger
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This program is free software: you can redistribute it and/or modify
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it under the terms of the GNU Affero General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU Affero General Public License for more details.
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You should have received a copy of the GNU Affero General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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package de.uhilger.transit.web;
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import java.io.File;
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import java.util.logging.FileHandler;
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import java.util.logging.Handler;
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import java.util.logging.Level;
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import java.util.logging.Logger;
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import javax.servlet.ServletContext;
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import javax.servlet.ServletContextEvent;
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import javax.servlet.ServletContextListener;
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import de.uhilger.transit.TextLogFormatter;
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/**
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* Die Klasse WebApp kann von webanwendungen als Basisklasse verwendet
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* werden. Sie etabliert Dinge, die von einer Webanwendung zentral
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* benoetigt werden wie z.B. Protokollierung
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*
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* Die Klasse WebApp implementiert die Schnittstell ServletContextListener.
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* Wird sie als Listener im Deployment Descriptor einer Webanwendung eingebunden,
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* werden ihre Funktionen zum Start und zum Ende ihrer Laufzeit wirksam.
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*/
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public class WebApp implements ServletContextListener {
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/*public static final String P_LOGGERNAME = "loggername";
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public static final String P_LOGDIRNAME = "logdirname";
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public static final String P_LOGFILENAME = "logfilename";
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public static final String P_LOGFILESIZE = "logfilesize";
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public static final String P_LOGFILECOUNT = "logfilecount";
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public static final String P_LOGLEVEL = "loglevel";*/
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public static final String P_DEBUG = "debug";
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public static final String WEBAPP_LOGGER = "webapplogger";
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/*
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private Level getLevel(String levelStr) {
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Level level = Level.INFO;
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if(levelStr.equalsIgnoreCase(Level.ALL.getName())) {
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level = Level.ALL;
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} else if(levelStr.equalsIgnoreCase(Level.CONFIG.getName())) {
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level = Level.CONFIG;
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} else if(levelStr.equalsIgnoreCase(Level.FINEST.getName())) {
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level = Level.FINEST;
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} else if(levelStr.equalsIgnoreCase(Level.FINER.getName())) {
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level = Level.FINER;
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} else if(levelStr.equalsIgnoreCase(Level.FINEST.getName())) {
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level = Level.FINE;
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} else if(levelStr.equalsIgnoreCase(Level.OFF.getName())) {
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level = Level.OFF;
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} else if(levelStr.equalsIgnoreCase(Level.SEVERE.getName())) {
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level = Level.SEVERE;
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} else if(levelStr.equalsIgnoreCase(Level.WARNING.getName())) {
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level = Level.WARNING;
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}
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return level;
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}
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*/
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public void contextInitialized(ServletContextEvent event) {
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ServletContext servletContext = event.getServletContext();
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/*
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Object o = servletContext.getAttribute(WEBAPP_LOGGER);
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if(o == null) {
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String loggername = servletContext.getInitParameter(P_LOGGERNAME); // Name der root Package dieser Anwendung
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String logdirname = servletContext.getInitParameter(P_LOGDIRNAME);
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String logfilename = servletContext.getInitParameter(P_LOGFILENAME); // etwas wie z.B. "log%g.%u.txt"
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String logfilesize = servletContext.getInitParameter(P_LOGFILESIZE); // Anzahl Bytes
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String logfilecount = servletContext.getInitParameter(P_LOGFILECOUNT); // Anzahl Dateien fuer Rotation
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String loglevel = servletContext.getInitParameter(P_LOGLEVEL);
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FileHandler fh;
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Logger logger = Logger.getLogger(loggername);
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servletContext.setAttribute(WEBAPP_LOGGER, logger);
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try {
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File basis = new File(this.getClass().getResource("/").toURI());
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File catalinaBase = basis.getParentFile().getParentFile().getParentFile().getParentFile();
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File f = new File(catalinaBase, logdirname);
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if (!f.exists()) {
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f.mkdirs();
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}
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fh = new FileHandler(f.getAbsolutePath() + File.separator + logfilename,
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Integer.parseInt(logfilesize), Integer.parseInt(logfilecount), true);
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//fh.setLevel(getLevel(loglevel));
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fh.setFormatter(new TextLogFormatter());
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logger.setLevel(getLevel(loglevel));
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logger.addHandler(fh);
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logger.finest("logger " + loggername + " erzeugt");
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} catch (Exception e) {
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logger.log(Level.ALL, e.getMessage(), e);
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}
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} else {
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// logger ist schon da
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}
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*/
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}
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public void contextDestroyed(ServletContextEvent event) {
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ServletContext servletContext = event.getServletContext();
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/*
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Object o = servletContext.getAttribute(WEBAPP_LOGGER);
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if(o != null) {
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Logger logger = (Logger) o;
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Handler[] handlers = logger.getHandlers();
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for(int i = 0; i < handlers.length; i++) {
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handlers[i].flush(); //
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if(handlers[i] instanceof FileHandler) {
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((FileHandler) handlers[i]).close();
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}
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logger.removeHandler(handlers[i]);
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}
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servletContext.removeAttribute(WEBAPP_LOGGER);
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logger = null;
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}
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*/
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}
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/**
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* Den Logger aus dem ServletContext ermitteln.
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*/
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protected Logger getLogger(ServletContext ctx) {
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Logger logger = null;
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Object o = ctx.getAttribute(WEBAPP_LOGGER);
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if(o != null) {
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logger = (Logger) o;
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}
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return logger;
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}
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}
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