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1   /*
2    * Licensed to the Apache Software Foundation (ASF) under one or more
3    * contributor license agreements. See the NOTICE file distributed with
4    * this work for additional information regarding copyright ownership.
5    * The ASF licenses this file to You under the Apache license, Version 2.0
6    * (the "License"); you may not use this file except in compliance with
7    * the License. You may obtain a copy of the License at
8    *
9    *      http://www.apache.org/licenses/LICENSE-2.0
10   *
11   * Unless required by applicable law or agreed to in writing, software
12   * distributed under the License is distributed on an "AS IS" BASIS,
13   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14   * See the license for the specific language governing permissions and
15   * limitations under the license.
16   */
17  package org.apache.logging.log4j.core;
18  
19  import java.util.EventListener;
20  
21  import org.apache.logging.log4j.LogManager;
22  
23  /**
24   * Base class for server classes that listen to {@link LogEvent}s.
25   */
26  public class LogEventListener implements EventListener {
27  
28      private final LoggerContext context;
29  
30      protected LogEventListener() {
31          context = (LoggerContext) LogManager.getContext(false);
32      }
33  
34      public void log(final LogEvent event) {
35          if (event == null) {
36              return;
37          }
38          final Logger logger = context.getLogger(event.getLoggerName());
39          if (logger.config.filter(event.getLevel(), event.getMarker(), event.getMessage(), event.getThrown())) {
40              logger.config.logEvent(event);
41          }
42      }
43  }