1 /*
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3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4  *
5  * This code is free software; you can redistribute it and/or modify it
6  * under the terms of the GNU General Public License version 2 only, as
7  * published by the Free Software Foundation.
8  *
9  * This code is distributed in the hope that it will be useful, but WITHOUT
10  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
12  * version 2 for more details (a copy is included in the LICENSE file that
13  * accompanied this code).
14  *
15  * You should have received a copy of the GNU General Public License version
16  * 2 along with this work; if not, write to the Free Software Foundation,
17  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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19  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
20  * or visit www.oracle.com if you need additional information or have any
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23 
24 /*
25  * @test
26  * @bug 6229368 8025207
27  * @summary Wrong threshold value in CounterMonitor with offset and modulus.
28  * @author Luis-Miguel Alventosa
29  *
30  * @run clean CounterMonitorThresholdTest
31  * @run build CounterMonitorThresholdTest
32  * @run main CounterMonitorThresholdTest
33  */
34 
35 import java.lang.management.ManagementFactory;
36 import javax.management.MBeanServer;
37 import javax.management.MBeanServerInvocationHandler;
38 import javax.management.Notification;
39 import javax.management.NotificationEmitter;
40 import javax.management.NotificationListener;
41 import javax.management.ObjectName;
42 import javax.management.monitor.CounterMonitor;
43 import javax.management.monitor.CounterMonitorMBean;
44 import javax.management.monitor.MonitorNotification;
45 
46 public class CounterMonitorThresholdTest {
47 
48     // Offset = 1
49     private static int counter1[]      = { 0, 1, 2, 3, 4, 4, 5, 5, 0, 1, 2, 3, 4, 5, 0, 1 };
50     private static int derivedGauge1[] = { 0, 1, 2, 3, 4, 4, 5, 5, 0, 1, 2, 3, 4, 5, 0, 1 };
51     private static int threshold1[]    = { 1, 2, 3, 4, 5, 5, 1, 1, 1, 2, 3, 4, 5, 1, 1, 2 };
52 
53     // Offset = 3
54     private static int counter2[]      = { 0, 1, 2, 3, 3, 4, 4, 5, 0, 1, 2, 3, 4, 5, 0, 1 };
55     private static int derivedGauge2[] = { 0, 1, 2, 3, 3, 4, 4, 5, 0, 1, 2, 3, 4, 5, 0, 1 };
56     private static int threshold2[]    = { 1, 4, 4, 4, 4, 1, 1, 1, 1, 4, 4, 4, 1, 1, 1, 4 };
57 
58     public interface TestMBean {
getCounter()59         public int getCounter();
setCounter(int count)60         public void setCounter(int count);
61     }
62 
63     public static class Test implements TestMBean {
getCounter()64         public int getCounter() {
65             return count;
66         }
setCounter(int count)67         public void setCounter(int count) {
68             this.count = count;
69         }
70         private int count = 0;
71     }
72 
73     public static class Listener implements NotificationListener {
handleNotification(Notification n, Object hb)74         public void handleNotification(Notification n, Object hb) {
75             System.out.println("\tReceived notification: " + n.getType());
76             if (n instanceof MonitorNotification) {
77                 MonitorNotification mn = (MonitorNotification) n;
78                 System.out.println("\tSource: " +
79                     mn.getSource());
80                 System.out.println("\tType: " +
81                     mn.getType());
82                 System.out.println("\tTimeStamp: " +
83                     mn.getTimeStamp());
84                 System.out.println("\tObservedObject: " +
85                     mn.getObservedObject());
86                 System.out.println("\tObservedAttribute: " +
87                     mn.getObservedAttribute());
88                 System.out.println("\tDerivedGauge: " +
89                     mn.getDerivedGauge());
90                 System.out.println("\tTrigger: " +
91                     mn.getTrigger());
92             }
93         }
94     }
95 
runTest(int offset, int counter[], int derivedGauge[], int threshold[])96     public static void runTest(int offset,
97                                int counter[],
98                                int derivedGauge[],
99                                int threshold[]) throws Exception {
100         // Retrieve the platform MBean server
101         //
102         System.out.println("\nRetrieve the platform MBean server");
103         MBeanServer mbs = ManagementFactory.getPlatformMBeanServer();
104         String domain = mbs.getDefaultDomain();
105 
106         // Create and register TestMBean
107         //
108         ObjectName name =
109             new ObjectName(domain +
110                            ":type=" + Test.class.getName() +
111                            ",offset=" + offset);
112         mbs.createMBean(Test.class.getName(), name);
113         TestMBean mbean = (TestMBean)
114             MBeanServerInvocationHandler.newProxyInstance(
115                 mbs, name, TestMBean.class, false);
116 
117         // Create and register CounterMonitorMBean
118         //
119         ObjectName cmn =
120             new ObjectName(domain +
121                            ":type=" + CounterMonitor.class.getName() +
122                            ",offset=" + offset);
123         CounterMonitor m = new CounterMonitor();
124         mbs.registerMBean(m, cmn);
125         CounterMonitorMBean cm = (CounterMonitorMBean)
126             MBeanServerInvocationHandler.newProxyInstance(
127                 mbs, cmn, CounterMonitorMBean.class, true);
128         ((NotificationEmitter) cm).addNotificationListener(
129             new Listener(), null, null);
130         cm.addObservedObject(name);
131         cm.setObservedAttribute("Counter");
132         cm.setGranularityPeriod(100);
133         cm.setInitThreshold(1);
134         cm.setOffset(offset);
135         cm.setModulus(5);
136         cm.setNotify(true);
137 
138         // Start the monitor
139         //
140         System.out.println("\nStart monitoring...");
141         cm.start();
142 
143         // Play with counter
144         //
145         for (int i = 0; i < counter.length; i++) {
146             mbean.setCounter(counter[i]);
147             System.out.println("\nCounter = " + mbean.getCounter());
148             Integer derivedGaugeValue;
149             // either pass or test timeout (killed by test harness)
150             // see 8025207
151             do {
152                 Thread.sleep(150);
153                 derivedGaugeValue = (Integer) cm.getDerivedGauge(name);
154             } while (derivedGaugeValue.intValue() != derivedGauge[i]);
155 
156             Number thresholdValue = cm.getThreshold(name);
157             System.out.println("Threshold = " + thresholdValue);
158             if (thresholdValue.intValue() != threshold[i]) {
159                 System.out.println("Wrong threshold! Current value = " +
160                     thresholdValue + " Expected value = " + threshold[i]);
161                 System.out.println("\nStop monitoring...");
162                 cm.stop();
163                 throw new IllegalArgumentException("wrong threshold");
164             }
165         }
166 
167         // Stop the monitor
168         //
169         System.out.println("\nStop monitoring...");
170         cm.stop();
171     }
172 
main(String[] args)173     public static void main(String[] args) throws Exception {
174         runTest(1, counter1, derivedGauge1, threshold1);
175         runTest(3, counter2, derivedGauge2, threshold2);
176     }
177 }
178