001/**
002 * Copyright (C) 2007 - 2016, Jens Lehmann
003 *
004 * This file is part of DL-Learner.
005 *
006 * DL-Learner is free software; you can redistribute it and/or modify
007 * it under the terms of the GNU General Public License as published by
008 * the Free Software Foundation; either version 3 of the License, or
009 * (at your option) any later version.
010 *
011 * DL-Learner is distributed in the hope that it will be useful,
012 * but WITHOUT ANY WARRANTY; without even the implied warranty of
013 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
014 * GNU General Public License for more details.
015 *
016 * You should have received a copy of the GNU General Public License
017 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
018 */
019package org.dllearner.utilities;
020
021import java.util.Enumeration;
022
023import org.apache.log4j.Appender;
024import org.apache.log4j.Level;
025import org.apache.log4j.LogManager;
026import org.apache.log4j.Logger;
027import org.apache.log4j.spi.LoggerRepository;
028
029/**
030 * Logging centered utility class.
031 * 
032 * @author Jens Lehmann
033 *
034 */
035public class Logging {
036
037        /**
038         * Prints the currently available log4j loggers to system out.
039         */
040        @SuppressWarnings({"unchecked"})
041        public static void printCurrentLoggers() {
042                LoggerRepository rep = LogManager.getLoggerRepository();
043                Enumeration<Logger> e = rep.getCurrentLoggers();                
044                while(e.hasMoreElements()) {
045                        Logger l = e.nextElement();
046                        String name = l.getName();
047                        Level level = l.getLevel();
048                        Enumeration<Appender> appenders = l.getAllAppenders();
049                        
050                        if(appenders.hasMoreElements())
051                                System.out.println("APPENDER: " + appenders.nextElement());
052                        
053                        System.out.println("name : " + name);
054                        System.out.println("level: " + level);
055                        System.out.println("appenders: " + appenders);
056                        System.out.println();
057                }
058        }
059        
060}