001/* 002 * SonarQube 003 * Copyright (C) 2009-2018 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}