001    /*
002     * Licensed to the Apache Software Foundation (ASF) under one or more
003     * contributor license agreements. See the NOTICE file distributed with
004     * this work for additional information regarding copyright ownership.
005     * The ASF licenses this file to You under the Apache license, Version 2.0
006     * (the "License"); you may not use this file except in compliance with
007     * the License. You may obtain a copy of the License at
008     *
009     *      http://www.apache.org/licenses/LICENSE-2.0
010     *
011     * Unless required by applicable law or agreed to in writing, software
012     * distributed under the License is distributed on an "AS IS" BASIS,
013     * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
014     * See the license for the specific language governing permissions and
015     * limitations under the license.
016     */
017    package org.apache.logging.slf4j;
018    
019    import java.util.concurrent.ConcurrentHashMap;
020    import java.util.concurrent.ConcurrentMap;
021    
022    import org.apache.logging.log4j.message.MessageFactory;
023    import org.apache.logging.log4j.spi.LoggerContext;
024    import org.apache.logging.log4j.spi.ExtendedLogger;
025    import org.slf4j.LoggerFactory;
026    
027    /**
028     *
029     */
030    public class SLF4JLoggerContext implements LoggerContext {
031        private final ConcurrentMap<String, SLF4JLogger> loggers = new ConcurrentHashMap<String, SLF4JLogger>();
032    
033        @Override
034        public Object getExternalContext() {
035            return null;
036        }
037    
038        @Override
039        public ExtendedLogger getLogger(final String name) {
040            if (!loggers.containsKey(name)) {
041                loggers.putIfAbsent(name, new SLF4JLogger(name, LoggerFactory.getLogger(name)));
042            }
043            return loggers.get(name);
044        }
045    
046        @Override
047        public ExtendedLogger getLogger(final String name, final MessageFactory messageFactory) {
048            if (!loggers.containsKey(name)) {
049                loggers.putIfAbsent(name, new SLF4JLogger(name, messageFactory, LoggerFactory.getLogger(name)));
050            }
051            return loggers.get(name);
052        }
053    
054        @Override
055        public boolean hasLogger(final String name) {
056            return loggers.containsKey(name);
057        }
058    }