Transit.git - Ulrich Hilger Code Repository

ulrich

2014-11-20 4b8725bf2f6fbf3acd63c1f1a168ac32f129694a

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ca8e1e	1	/*
U	2	Transit - Remote procedure calls made simple
	3	Copyright (c) 2012 Ulrich Hilger
	4
	5	This program is free software: you can redistribute it and/or modify
	6	it under the terms of the GNU Affero General Public License as published by
	7	the Free Software Foundation, either version 3 of the License, or
	8	(at your option) any later version.
	9
	10	This program 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
	13	GNU Affero General Public License for more details.
	14
	15	You should have received a copy of the GNU Affero General Public License
	16	along with this program. If not, see <http://www.gnu.org/licenses/>.
	17	*/
	18
	19	package de.uhilger.transit.web;
	20
	21	import java.io.File;
	22	import java.util.logging.FileHandler;
	23	import java.util.logging.Handler;
	24	import java.util.logging.Level;
	25	import java.util.logging.Logger;
	26
	27	import javax.servlet.ServletContext;
	28	import javax.servlet.ServletContextEvent;
	29	import javax.servlet.ServletContextListener;
	30
	31	import de.uhilger.transit.TextLogFormatter;
	32
	33	/**
	34	* Die Klasse WebApp kann von webanwendungen als Basisklasse verwendet
	35	* werden. Sie etabliert Dinge, die von einer Webanwendung zentral
	36	* benoetigt werden wie z.B. Protokollierung
	37	*
	38	* Die Klasse WebApp implementiert die Schnittstell ServletContextListener.
	39	* Wird sie als Listener im Deployment Descriptor einer Webanwendung eingebunden,
	40	* werden ihre Funktionen zum Start und zum Ende ihrer Laufzeit wirksam.
ae1838	41	*
U	42	* @deprecated class is obsolete, do not use anymore
ca8e1e	43	*/
ae1838	44	@Deprecated
ca8e1e	45	public class WebApp implements ServletContextListener {
U	46
6b1009	47	/*public static final String P_LOGGERNAME = "loggername";
ca8e1e	48	public static final String P_LOGDIRNAME = "logdirname";
U	49	public static final String P_LOGFILENAME = "logfilename";
	50	public static final String P_LOGFILESIZE = "logfilesize";
	51	public static final String P_LOGFILECOUNT = "logfilecount";
6b1009	52	public static final String P_LOGLEVEL = "loglevel";*/
ca8e1e	53
U	54	public static final String P_DEBUG = "debug";
	55
	56	public static final String WEBAPP_LOGGER = "webapplogger";
	57
6b1009	58	/*
ca8e1e	59	private Level getLevel(String levelStr) {
U	60	Level level = Level.INFO;
	61	if(levelStr.equalsIgnoreCase(Level.ALL.getName())) {
	62	level = Level.ALL;
	63	} else if(levelStr.equalsIgnoreCase(Level.CONFIG.getName())) {
	64	level = Level.CONFIG;
	65	} else if(levelStr.equalsIgnoreCase(Level.FINEST.getName())) {
	66	level = Level.FINEST;
	67	} else if(levelStr.equalsIgnoreCase(Level.FINER.getName())) {
	68	level = Level.FINER;
	69	} else if(levelStr.equalsIgnoreCase(Level.FINEST.getName())) {
	70	level = Level.FINE;
	71	} else if(levelStr.equalsIgnoreCase(Level.OFF.getName())) {
	72	level = Level.OFF;
	73	} else if(levelStr.equalsIgnoreCase(Level.SEVERE.getName())) {
	74	level = Level.SEVERE;
	75	} else if(levelStr.equalsIgnoreCase(Level.WARNING.getName())) {
	76	level = Level.WARNING;
	77	}
	78	return level;
	79	}
6b1009	80	*/
ca8e1e	81	public void contextInitialized(ServletContextEvent event) {
U	82	ServletContext servletContext = event.getServletContext();
6b1009	83	/*
ca8e1e	84	Object o = servletContext.getAttribute(WEBAPP_LOGGER);
6b1009	85
ca8e1e	86	if(o == null) {
U	87	String loggername = servletContext.getInitParameter(P_LOGGERNAME); // Name der root Package dieser Anwendung
	88	String logdirname = servletContext.getInitParameter(P_LOGDIRNAME);
	89	String logfilename = servletContext.getInitParameter(P_LOGFILENAME); // etwas wie z.B. "log%g.%u.txt"
	90	String logfilesize = servletContext.getInitParameter(P_LOGFILESIZE); // Anzahl Bytes
	91	String logfilecount = servletContext.getInitParameter(P_LOGFILECOUNT); // Anzahl Dateien fuer Rotation
	92	String loglevel = servletContext.getInitParameter(P_LOGLEVEL);
	93	FileHandler fh;
	94	Logger logger = Logger.getLogger(loggername);
	95	servletContext.setAttribute(WEBAPP_LOGGER, logger);
	96	try {
	97	File basis = new File(this.getClass().getResource("/").toURI());
	98	File catalinaBase = basis.getParentFile().getParentFile().getParentFile().getParentFile();
	99	File f = new File(catalinaBase, logdirname);
	100	if (!f.exists()) {
	101	f.mkdirs();
	102	}
	103	fh = new FileHandler(f.getAbsolutePath() + File.separator + logfilename,
	104	Integer.parseInt(logfilesize), Integer.parseInt(logfilecount), true);
	105	//fh.setLevel(getLevel(loglevel));
	106	fh.setFormatter(new TextLogFormatter());
	107	logger.setLevel(getLevel(loglevel));
	108	logger.addHandler(fh);
	109	logger.finest("logger " + loggername + " erzeugt");
	110	} catch (Exception e) {
	111	logger.log(Level.ALL, e.getMessage(), e);
	112	}
	113	} else {
	114	// logger ist schon da
	115	}
6b1009	116	*/
ca8e1e	117	}
U	118
	119	public void contextDestroyed(ServletContextEvent event) {
	120	ServletContext servletContext = event.getServletContext();
6b1009	121	/*
ca8e1e	122	Object o = servletContext.getAttribute(WEBAPP_LOGGER);
U	123	if(o != null) {
	124	Logger logger = (Logger) o;
	125	Handler[] handlers = logger.getHandlers();
	126	for(int i = 0; i < handlers.length; i++) {
	127	handlers[i].flush(); //
	128	if(handlers[i] instanceof FileHandler) {
	129	((FileHandler) handlers[i]).close();
	130	}
	131	logger.removeHandler(handlers[i]);
	132	}
	133	servletContext.removeAttribute(WEBAPP_LOGGER);
	134	logger = null;
	135	}
6b1009	136	*/
ca8e1e	137	}
U	138
	139	/**
	140	* Den Logger aus dem ServletContext ermitteln.
	141	*/
	142	protected Logger getLogger(ServletContext ctx) {
	143	Logger logger = null;
	144	Object o = ctx.getAttribute(WEBAPP_LOGGER);
	145	if(o != null) {
	146	logger = (Logger) o;
	147	}
	148	return logger;
	149	}
	150	}
	151