View Javadoc

1   /**
2    * Logback: the reliable, generic, fast and flexible logging framework.
3    * Copyright (C) 1999-2009, QOS.ch. All rights reserved.
4    *
5    * This program and the accompanying materials are dual-licensed under
6    * either the terms of the Eclipse Public License v1.0 as published by
7    * the Eclipse Foundation
8    *
9    *   or (per the licensee's choosing)
10   *
11   * under the terms of the GNU Lesser General Public License version 2.1
12   * as published by the Free Software Foundation.
13   */
14  package chapter4.mail;
15  
16  import ch.qos.logback.core.boolex.EvaluationException;
17  import ch.qos.logback.core.boolex.EventEvaluator;
18  import ch.qos.logback.core.spi.ContextAwareBase;
19  
20  /**
21   * A simple EventEvaluator implementation that triggers email transmission after
22   * 1024 events regardless of event level.
23   */
24  public class CounterBasedEvaluator extends ContextAwareBase implements EventEvaluator {
25  
26    static int LIMIT = 1024;
27    int counter = 0;
28    String name;
29    boolean started;
30  
31    public boolean evaluate(Object event) throws NullPointerException,
32        EvaluationException {
33      counter++;
34  
35      if (counter == LIMIT) {
36        counter = 0;
37  
38        return true;
39      } else {
40        return false;
41      }
42    }
43  
44    public String getName() {
45      return name;
46    }
47  
48    public void setName(String name) {
49      this.name = name;
50    }
51  
52    public boolean isStarted() {
53      return started;
54    }
55  
56    public void start() {
57      started = true;
58    }
59  
60    public void stop() {
61      started = false;
62    }
63  }