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}