001    /*
002     * Copyright (C) 2012 eXo Platform SAS.
003     *
004     * This is free software; you can redistribute it and/or modify it
005     * under the terms of the GNU Lesser General Public License as
006     * published by the Free Software Foundation; either version 2.1 of
007     * the License, or (at your option) any later version.
008     *
009     * This software is distributed in the hope that it will be useful,
010     * but WITHOUT ANY WARRANTY; without even the implied warranty of
011     * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
012     * Lesser General Public License for more details.
013     *
014     * You should have received a copy of the GNU Lesser General Public
015     * License along with this software; if not, write to the Free
016     * Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
017     * 02110-1301 USA, or see the FSF site: http://www.fsf.org.
018     */
019    package org.crsh.cli.impl.log;
020    
021    import java.io.ByteArrayInputStream;
022    import java.io.ByteArrayOutputStream;
023    import java.io.File;
024    import java.util.Properties;
025    import java.util.logging.LogManager;
026    
027    /**
028     * An internal class that configures java util logging with <code>ALL</code> level with the
029     * <code>FileHandler</code> in the <code>java.util.logging.FileHandler.pattern</code> system property.
030     *
031     * @author Julien Viet
032     */
033    public class LogConfigurator {
034    
035      public LogConfigurator() throws Exception {
036        LogManager manager = LogManager.getLogManager();
037        String target = System.getProperty("java.util.logging.FileHandler.pattern");
038        if (target != null) {
039          File f = new File(target);
040          ByteArrayOutputStream buffer = new ByteArrayOutputStream();
041          Properties props = new Properties();
042          props.put("handlers", "java.util.logging.FileHandler");
043          props.put(".level", "ALL");
044          props.put("java.util.logging.FileHandler.level", "ALL");
045          props.put("java.util.logging.FileHandler.pattern", f.getAbsolutePath());
046          props.put("java.util.logging.FileHandler.formatter", "java.util.logging.SimpleFormatter");
047          props.store(buffer, null);
048          buffer.close();
049          manager.readConfiguration(new ByteArrayInputStream(buffer.toByteArray()));
050        } else {
051          manager.readConfiguration();
052        }
053      }
054    }