001/**
002 * Copyright (c) 2004-2021 QOS.ch
003 * All rights reserved.
004 *
005 * Permission is hereby granted, free  of charge, to any person obtaining
006 * a  copy  of this  software  and  associated  documentation files  (the
007 * "Software"), to  deal in  the Software without  restriction, including
008 * without limitation  the rights to  use, copy, modify,  merge, publish,
009 * distribute,  sublicense, and/or sell  copies of  the Software,  and to
010 * permit persons to whom the Software  is furnished to do so, subject to
011 * the following conditions:
012 *
013 * The  above  copyright  notice  and  this permission  notice  shall  be
014 * included in all copies or substantial portions of the Software.
015 *
016 * THE  SOFTWARE IS  PROVIDED  "AS  IS", WITHOUT  WARRANTY  OF ANY  KIND,
017 * EXPRESS OR  IMPLIED, INCLUDING  BUT NOT LIMITED  TO THE  WARRANTIES OF
018 * MERCHANTABILITY,    FITNESS    FOR    A   PARTICULAR    PURPOSE    AND
019 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
020 * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
021 * OF CONTRACT, TORT OR OTHERWISE,  ARISING FROM, OUT OF OR IN CONNECTION
022 * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
023 *
024 */
025package org.slf4j.jdk.platform.logging;
026
027import java.util.concurrent.ConcurrentHashMap;
028import java.util.concurrent.ConcurrentMap;
029
030import org.slf4j.Logger;
031import org.slf4j.LoggerFactory;
032
033/**
034 * Manages instances of {@link SLF4JPlatformLogger}.
035 * 
036 * @since 1.3.0
037 * @author Ceki
038 *
039 */
040public class SLF4JPlarformLoggerFactory {
041    ConcurrentMap<String, SLF4JPlatformLogger> loggerMap = new ConcurrentHashMap<>();
042    
043    /**
044     * Return an appropriate {@link SLF4JPlatformLogger} instance by name.
045     */
046    public SLF4JPlatformLogger getLogger(String loggerName) {
047        
048        
049        SLF4JPlatformLogger spla = loggerMap.get(loggerName);
050        if (spla != null) {
051            return spla;
052        } else {
053            Logger slf4jLogger = LoggerFactory.getLogger(loggerName);
054            SLF4JPlatformLogger newInstance = new SLF4JPlatformLogger(slf4jLogger);
055            SLF4JPlatformLogger oldInstance = loggerMap.putIfAbsent(loggerName, newInstance);
056            return oldInstance == null ? newInstance : oldInstance;
057        }
058    }
059}