    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.log4j.core;
    018
    019    import java.util.EventListener;
    020
    021    import org.apache.logging.log4j.LogManager;
    022
    023    /**
    024     * Base class for server classes that listen to {@link LogEvent}s.
    025     * TODO (MS) How is this class any different from Appender?
    026     */
    027    public class LogEventListener implements EventListener {
    028
    029        private final LoggerContext context;
    030
    031        protected LogEventListener() {
    032            context = (LoggerContext) LogManager.getContext(false);
    033        }
    034
    035        public void log(final LogEvent event) {
    036            if (event == null) {
    037                return;
    038            }
    039            final Logger logger = context.getLogger(event.getLoggerName());
    040            if (logger.config.filter(event.getLevel(), event.getMarker(), event.getMessage(), event.getThrown())) {
    041                logger.config.logEvent(event);
    042            }
    043        }
    044    }