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 org.apache.logging.log4j.Logger;
020    import org.apache.logging.log4j.message.MessageFactory;
021    import org.apache.logging.log4j.spi.LoggerContext;
022    import org.slf4j.LoggerFactory;
023    
024    import java.util.concurrent.ConcurrentHashMap;
025    import java.util.concurrent.ConcurrentMap;
026    
027    /**
028     *
029     */
030    public class SLF4JLoggerContext implements LoggerContext {
031        private final ConcurrentMap<String, SLF4JLogger> loggers = new ConcurrentHashMap<String, SLF4JLogger>();
032    
033        public Object getExternalContext() {
034            return null;
035        }
036    
037        public Logger getLogger(final String name) {
038            if (!loggers.containsKey(name)) {
039                loggers.putIfAbsent(name, new SLF4JLogger(name, LoggerFactory.getLogger(name)));
040            }
041            return loggers.get(name);
042        }
043    
044        public Logger getLogger(final String name, final MessageFactory messageFactory) {
045            if (!loggers.containsKey(name)) {
046                loggers.putIfAbsent(name, new SLF4JLogger(name, messageFactory, LoggerFactory.getLogger(name)));
047            }
048            return loggers.get(name);
049        }
050    
051        public boolean hasLogger(final String name) {
052            return loggers.containsKey(name);
053        }
054    }