1 /**
2 * Copyright 2005-2011 The Kuali Foundation
3 *
4 * Licensed under the Educational Community License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 * http://www.opensource.org/licenses/ecl2.php
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16 package org.kuali.rice.ken.util;
17
18 import org.apache.commons.lang.time.DurationFormatUtils;
19 import org.apache.commons.lang.time.StopWatch;
20 import org.apache.log4j.Logger;
21
22 /**
23 * Wrapper for the Log4J performance log
24 * @author Kuali Rice Team (rice.collab@kuali.org)
25 */
26 public final class PerformanceLog {
27 private static final Logger LOG = Logger.getLogger("Performance");
28
29 /**
30 * This class
31 * @author Kuali Rice Team (rice.collab@kuali.org)
32 */
33 public static final class PerformanceStopWatch {
34 private StopWatch stopWatch = new StopWatch();
35 private String message;
36
37 /**
38 * Constructs a PerformanceLog.java.
39 * @param message
40 */
41 public PerformanceStopWatch(String message) {
42 this.message = message;
43 stopWatch.start();
44 }
45
46 /**
47 * This method records the duration of how long a message delivery takes.
48 */
49 public void recordDuration() {
50 logDuration(message, stopWatch.getTime());
51 }
52 }
53
54 /**
55 * This method returns an instance of the logger object.
56 * @return Logger
57 */
58 public static Logger getInstance() {
59 return LOG;
60 }
61
62 /**
63 * This method returns a new stop watch instance.
64 * @param message
65 * @return PerformanceStopWatch
66 */
67 public static PerformanceStopWatch startTimer(String message) {
68 return new PerformanceStopWatch(message);
69 }
70
71 /**
72 * This method logs the duration information for a given message.
73 * @param message
74 * @param duration
75 */
76 public static void logDuration(String message, long duration) {
77 LOG.info(message + ": " + DurationFormatUtils.formatDurationHMS(duration) + " (" + duration+ " ms)");
78 }
79 }