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.classic.filter;
15
16 import ch.qos.logback.classic.Level;
17 import ch.qos.logback.classic.spi.ILoggingEvent;
18 import ch.qos.logback.core.filter.Filter;
19 import ch.qos.logback.core.spi.FilterReply;
20
21 /**
22 * Filters events below the threshold level.
23 *
24 * Events with a level below the specified level will be denied, while events
25 * with a level equal or above the specified level will trigger a
26 * FilterReply.NEUTRAL result, to allow the rest of the filter chain process the
27 * event.
28 *
29 * For more information about filters, please refer to the online manual at
30 * http://logback.qos.ch/manual/filters.html#thresholdFilter
31 *
32 * @author Sébastien Pennec
33 */
34 public class ThresholdFilter extends Filter<ILoggingEvent> {
35
36 Level level;
37
38 @Override
39 public FilterReply decide(ILoggingEvent event) {
40 if (!isStarted()) {
41 return FilterReply.NEUTRAL;
42 }
43
44 if (event.getLevel().isGreaterOrEqual(level)) {
45 return FilterReply.NEUTRAL;
46 } else {
47 return FilterReply.DENY;
48 }
49 }
50
51 public void setLevel(String level) {
52 this.level = Level.toLevel(level);
53 }
54
55 public void start() {
56 if (this.level != null) {
57 super.start();
58 }
59 }
60 }