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1   /**
2    * Logback: the reliable, generic, fast and flexible logging framework.
3    * Copyright (C) 1999-2015, 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 ch.qos.logback.access.filter;
15  
16  import ch.qos.logback.access.spi.IAccessEvent;
17  import ch.qos.logback.core.filter.Filter;
18  import ch.qos.logback.core.spi.FilterReply;
19  
20  import javax.management.MBeanServer;
21  import javax.management.ObjectName;
22  import javax.management.StandardMBean;
23  import java.lang.management.ManagementFactory;
24  
25  public class CountingFilter extends Filter<IAccessEvent> {
26  
27      long total = 0;
28      final StatisticalViewImpl accessStatsImpl;
29  
30      String domain = "ch.qos.logback.access";
31  
32      public CountingFilter() {
33          accessStatsImpl = new StatisticalViewImpl(this);
34      }
35  
36      @Override
37      public FilterReply decide(IAccessEvent event) {
38          total++;
39          accessStatsImpl.update();
40          return FilterReply.NEUTRAL;
41      }
42  
43      public long getTotal() {
44          return total;
45      }
46  
47      @Override
48      public void start() {
49          MBeanServer mbs = ManagementFactory.getPlatformMBeanServer();
50          try {
51              ObjectName on = new ObjectName(domain + ":Name=" + getName());
52              StandardMBean mbean = new StandardMBean(accessStatsImpl, StatisticalView.class);
53              if (mbs.isRegistered(on)) {
54                  mbs.unregisterMBean(on);
55              }
56              mbs.registerMBean(mbean, on);
57              super.start();
58          } catch (Exception e) {
59              addError("Failed to create mbean", e);
60          }
61      }
62  
63      @Override
64      public void stop() {
65          super.stop();
66          try {
67              MBeanServer mbs = ManagementFactory.getPlatformMBeanServer();
68              ObjectName on = new ObjectName("totp:Filter=1");
69              mbs.unregisterMBean(on);
70          } catch (Exception e) {
71              addError("Failed to unregister mbean", e);
72          }
73      }
74  
75      public String getDomain() {
76          return domain;
77      }
78  
79      public void setDomain(String domain) {
80          this.domain = domain;
81      }
82  
83  }