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 */
019package org.crsh.cli.impl.log;
020
021import java.io.ByteArrayInputStream;
022import java.io.ByteArrayOutputStream;
023import java.io.File;
024import java.util.Properties;
025import 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 */
033public 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}