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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.status;
18  
19  import java.io.Closeable;
20  import java.util.EventListener;
21  
22  import org.apache.logging.log4j.Level;
23  
24  /**
25   * Interface that allows implementers to be notified of events in the logging system.
26   */
27  public interface StatusListener extends Closeable, EventListener {
28  
29      /**
30       * Called as events occur to process the StatusData.
31       * @param data The StatusData for the event.
32       */
33      void log(StatusData data);
34  
35      /**
36       * Return the Log Level that this listener wants included.
37       * @return the Log Level.
38       */
39      Level getStatusLevel();
40  }