1 /** 2 * Copyright (c) 2004-2021 QOS.ch 3 * All rights reserved. 4 * 5 * Permission is hereby granted, free of charge, to any person obtaining 6 * a copy of this software and associated documentation files (the 7 * "Software"), to deal in the Software without restriction, including 8 * without limitation the rights to use, copy, modify, merge, publish, 9 * distribute, sublicense, and/or sell copies of the Software, and to 10 * permit persons to whom the Software is furnished to do so, subject to 11 * the following conditions: 12 * 13 * The above copyright notice and this permission notice shall be 14 * included in all copies or substantial portions of the Software. 15 * 16 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, 17 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF 18 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND 19 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE 20 * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION 21 * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION 22 * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. 23 * 24 */ 25 package org.slf4j.jdk.platform.logging; 26 27 import java.util.concurrent.ConcurrentHashMap; 28 import java.util.concurrent.ConcurrentMap; 29 30 import org.slf4j.Logger; 31 import org.slf4j.LoggerFactory; 32 33 /** 34 * Manages instances of {@link SLF4JPlatformLogger}. 35 * 36 * @since 1.3.0 37 * @author Ceki 38 * 39 */ 40 public class SLF4JPlatformLoggerFactory { 41 ConcurrentMap<String, SLF4JPlatformLogger> loggerMap = new ConcurrentHashMap<>(); 42 43 /** 44 * Return an appropriate {@link SLF4JPlatformLogger} instance by name. 45 */ getLogger(String loggerName)46 public SLF4JPlatformLogger getLogger(String loggerName) { 47 48 49 SLF4JPlatformLogger spla = loggerMap.get(loggerName); 50 if (spla != null) { 51 return spla; 52 } else { 53 Logger slf4jLogger = LoggerFactory.getLogger(loggerName); 54 SLF4JPlatformLogger newInstance = new SLF4JPlatformLogger(slf4jLogger); 55 SLF4JPlatformLogger oldInstance = loggerMap.putIfAbsent(loggerName, newInstance); 56 return oldInstance == null ? newInstance : oldInstance; 57 } 58 } 59 } 60