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 */
017package org.apache.logging.log4j.core;
018
019import java.util.EventListener;
020
021import 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 */
027public 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}