    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    }