001/*
002 * SonarQube
003 * Copyright (C) 2009-2017 SonarSource SA
004 * mailto:info AT sonarsource DOT com
005 *
006 * This program is free software; you can redistribute it and/or
007 * modify it under the terms of the GNU Lesser General Public
008 * License as published by the Free Software Foundation; either
009 * version 3 of the License, or (at your option) any later version.
010 *
011 * This program 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 GNU
014 * Lesser General Public License for more details.
015 *
016 * You should have received a copy of the GNU Lesser General Public License
017 * along with this program; if not, write to the Free Software Foundation,
018 * Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
019 */
020package org.sonar.api.utils.log;
021
022/**
023 * @since 5.1
024 */
025public abstract class Loggers {
026
027  private static volatile Loggers factory;
028
029  static {
030    try {
031      Class.forName("ch.qos.logback.classic.Logger");
032      factory = new LogbackLoggers();
033    } catch (Throwable e) {
034      // no slf4j -> testing environment
035      factory = new ConsoleLoggers();
036    }
037  }
038
039  public static Logger get(Class<?> name) {
040    return factory.newInstance(name.getName());
041  }
042
043  public static Logger get(String name) {
044    return factory.newInstance(name);
045  }
046
047  static Loggers getFactory() {
048    return factory;
049  }
050
051  protected abstract Logger newInstance(String name);
052
053  protected abstract LoggerLevel getLevel();
054
055  protected abstract void setLevel(LoggerLevel level);
056
057}