001/*
002 * HA-JDBC: High-Availability JDBC
003 * Copyright (C) 2012  Paul Ferraro
004 *
005 * This program is free software: you can redistribute it and/or modify
006 * it under the terms of the GNU Lesser General Public License as published by
007 * the Free Software Foundation, either version 3 of the License, or
008 * (at your option) any later version.
009 *
010 * This program is distributed in the hope that it will be useful,
011 * but WITHOUT ANY WARRANTY; without even the implied warranty of
012 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
013 * GNU Lesser General Public License for more details.
014 *
015 * You should have received a copy of the GNU Lesser General Public License
016 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
017 */
018package net.sf.hajdbc.logging;
019
020import java.util.ServiceLoader;
021
022/**
023 * Factory for creating {@link Logger} implementation from various logging service provider implementations.
024 * @author Paul Ferraro
025 */
026public final class LoggerFactory
027{
028        private static final LoggingProvider provider = getProvider();
029
030        private static LoggingProvider getProvider()
031        {
032                for (LoggingProvider provider: ServiceLoader.load(LoggingProvider.class, LoggingProvider.class.getClassLoader()))
033                {
034                        if (provider.isEnabled())
035                        {
036                                provider.getLogger(LoggerFactory.class).log(Level.DEBUG, "Using {0} logging", provider.getName());
037                                
038                                return provider;
039                        }
040                }
041                throw new IllegalStateException(String.format("No %s found", LoggingProvider.class.getName()));
042        }
043        
044        public static Logger getLogger(Class<?> targetClass)
045        {
046                return provider.getLogger(targetClass);
047        }
048        
049        private LoggerFactory()
050        {
051                // Hide
052        }
053}