J. Duke | 319a3b9 | 2007-12-01 00:00:00 +0000 | [diff] [blame^] | 1 | /* |
| 2 | * Copyright 2004 Sun Microsystems, Inc. All Rights Reserved. |
| 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. |
| 18 | * |
| 19 | * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, |
| 20 | * CA 95054 USA or visit www.sun.com if you need additional information or |
| 21 | * have any questions. |
| 22 | */ |
| 23 | |
| 24 | /* |
| 25 | * @test |
| 26 | * @bug 4981829 |
| 27 | * @summary Test that the counter monitor, when running in difference mode, |
| 28 | * emits a notification every time the threshold is exceeded. |
| 29 | * @author Luis-Miguel Alventosa |
| 30 | * @run clean CounterMonitorTest |
| 31 | * @run build CounterMonitorTest |
| 32 | * @run main CounterMonitorTest |
| 33 | */ |
| 34 | |
| 35 | import javax.management.*; |
| 36 | import javax.management.monitor.*; |
| 37 | |
| 38 | public class CounterMonitorTest implements NotificationListener { |
| 39 | |
| 40 | // threshold number |
| 41 | private Number threshold = new Integer(2); |
| 42 | |
| 43 | // modulus number |
| 44 | private Number modulus = new Integer(7); |
| 45 | |
| 46 | // offset number |
| 47 | private int offset = 0; |
| 48 | |
| 49 | // difference mode flag |
| 50 | private boolean differenceModeFlag = true; |
| 51 | |
| 52 | // notify flag |
| 53 | private boolean notifyFlag = true; |
| 54 | |
| 55 | // granularity period |
| 56 | private int granularityperiod = 500; |
| 57 | |
| 58 | // counter values |
| 59 | private int[] values = new int[] {4, 6, 9, 11}; |
| 60 | |
| 61 | // time to wait for notification (in seconds) |
| 62 | private int timeout = 5; |
| 63 | |
| 64 | // flag to notify that a message has been received |
| 65 | private volatile boolean messageReceived = false; |
| 66 | |
| 67 | // MBean class |
| 68 | public class StdObservedObject implements StdObservedObjectMBean { |
| 69 | public Object getNbObjects() { |
| 70 | return count; |
| 71 | } |
| 72 | public void setNbObjects(Object n) { |
| 73 | count = n; |
| 74 | } |
| 75 | private Object count= null; |
| 76 | } |
| 77 | |
| 78 | // MBean interface |
| 79 | public interface StdObservedObjectMBean { |
| 80 | public Object getNbObjects(); |
| 81 | public void setNbObjects(Object n); |
| 82 | } |
| 83 | |
| 84 | // Notification handler |
| 85 | public void handleNotification(Notification notification, |
| 86 | Object handback) { |
| 87 | MonitorNotification n = (MonitorNotification) notification; |
| 88 | echo("\tInside handleNotification..."); |
| 89 | String type = n.getType(); |
| 90 | try { |
| 91 | if (type.equals(MonitorNotification.THRESHOLD_VALUE_EXCEEDED)) { |
| 92 | echo("\t\t" + n.getObservedAttribute() + |
| 93 | " has reached or exceeded the threshold"); |
| 94 | echo("\t\tDerived Gauge = " + n.getDerivedGauge()); |
| 95 | messageReceived = true; |
| 96 | synchronized (this) { |
| 97 | notifyAll(); |
| 98 | } |
| 99 | } else { |
| 100 | echo("\t\tSkipping notification of type: " + type); |
| 101 | } |
| 102 | } catch (Exception e) { |
| 103 | echo("\tError in handleNotification!"); |
| 104 | e.printStackTrace(System.out); |
| 105 | } |
| 106 | } |
| 107 | |
| 108 | /** |
| 109 | * Update the counter and check for notifications |
| 110 | */ |
| 111 | public void thresholdNotification() throws Exception { |
| 112 | |
| 113 | CounterMonitor counterMonitor = new CounterMonitor(); |
| 114 | try { |
| 115 | MBeanServer server = MBeanServerFactory.newMBeanServer(); |
| 116 | |
| 117 | String domain = server.getDefaultDomain(); |
| 118 | |
| 119 | // Create a new CounterMonitor MBean and add it to the MBeanServer. |
| 120 | // |
| 121 | echo(">>> CREATE a new CounterMonitor MBean"); |
| 122 | ObjectName counterMonitorName = new ObjectName( |
| 123 | domain + ":type=" + CounterMonitor.class.getName()); |
| 124 | server.registerMBean(counterMonitor, counterMonitorName); |
| 125 | |
| 126 | echo(">>> ADD a listener to the CounterMonitor"); |
| 127 | counterMonitor.addNotificationListener(this, null, null); |
| 128 | |
| 129 | // |
| 130 | // MANAGEMENT OF A STANDARD MBEAN |
| 131 | // |
| 132 | |
| 133 | echo(">>> CREATE a new StdObservedObject MBean"); |
| 134 | |
| 135 | ObjectName stdObsObjName = |
| 136 | new ObjectName(domain + ":type=StdObservedObject"); |
| 137 | StdObservedObject stdObsObj = new StdObservedObject(); |
| 138 | server.registerMBean(stdObsObj, stdObsObjName); |
| 139 | |
| 140 | echo(">>> SET the attributes of the CounterMonitor:"); |
| 141 | |
| 142 | counterMonitor.addObservedObject(stdObsObjName); |
| 143 | echo("\tATTRIBUTE \"ObservedObject\" = " + stdObsObjName); |
| 144 | |
| 145 | counterMonitor.setObservedAttribute("NbObjects"); |
| 146 | echo("\tATTRIBUTE \"ObservedAttribute\" = NbObjects"); |
| 147 | |
| 148 | counterMonitor.setNotify(notifyFlag); |
| 149 | echo("\tATTRIBUTE \"Notify\" = " + notifyFlag); |
| 150 | |
| 151 | counterMonitor.setInitThreshold(threshold); |
| 152 | echo("\tATTRIBUTE \"Threshold\" = " + threshold); |
| 153 | |
| 154 | counterMonitor.setGranularityPeriod(granularityperiod); |
| 155 | echo("\tATTRIBUTE \"GranularityPeriod\" = " + granularityperiod); |
| 156 | |
| 157 | counterMonitor.setModulus(modulus); |
| 158 | echo("\tATTRIBUTE \"Modulus\" = " + modulus); |
| 159 | |
| 160 | counterMonitor.setDifferenceMode(differenceModeFlag); |
| 161 | echo("\tATTRIBUTE \"DifferenceMode\" = " + differenceModeFlag); |
| 162 | |
| 163 | echo(">>> START the CounterMonitor"); |
| 164 | counterMonitor.start(); |
| 165 | |
| 166 | // Set initial value |
| 167 | // |
| 168 | Integer data = new Integer(0); |
| 169 | echo(">>> Set data = " + data.intValue()); |
| 170 | |
| 171 | Attribute attrib = new Attribute("NbObjects", data); |
| 172 | server.setAttribute(stdObsObjName, attrib); |
| 173 | |
| 174 | // Wait for granularity period (multiplied by 2 for sure) |
| 175 | // |
| 176 | Thread.sleep(granularityperiod * 2); |
| 177 | |
| 178 | // Loop through the values |
| 179 | // |
| 180 | for (int i = 0; i < values.length; i++) { |
| 181 | data = new Integer(values[i]); |
| 182 | echo(">>> Set data = " + data.intValue()); |
| 183 | |
| 184 | attrib = new Attribute("NbObjects", data); |
| 185 | server.setAttribute(stdObsObjName, attrib); |
| 186 | |
| 187 | echo("\tdoWait in Counter Monitor"); |
| 188 | doWait(); |
| 189 | |
| 190 | // Check if notification was received |
| 191 | // |
| 192 | if (messageReceived) { |
| 193 | echo("\tOKAY: Notification received"); |
| 194 | } else { |
| 195 | echo("\tError: notification missed or not emitted"); |
| 196 | throw new IllegalStateException("Notification lost"); |
| 197 | } |
| 198 | messageReceived = false; |
| 199 | } |
| 200 | } finally { |
| 201 | counterMonitor.stop(); |
| 202 | } |
| 203 | |
| 204 | echo(">>> Bye! Bye!"); |
| 205 | } |
| 206 | |
| 207 | /* |
| 208 | * Wait until timeout reached |
| 209 | */ |
| 210 | void doWait() { |
| 211 | for (int i = 0; i < timeout; i++) { |
| 212 | echo("\tdoWait: Waiting for " + timeout + " seconds. " + |
| 213 | "i = " + i + ", messageReceived = " + messageReceived); |
| 214 | if (messageReceived) { |
| 215 | break; |
| 216 | } |
| 217 | try { |
| 218 | synchronized (this) { |
| 219 | wait(1000); |
| 220 | } |
| 221 | } catch (InterruptedException e) { |
| 222 | // OK: Ignore... |
| 223 | } |
| 224 | } |
| 225 | } |
| 226 | |
| 227 | /* |
| 228 | * Print message |
| 229 | */ |
| 230 | void echo(String message) { |
| 231 | System.out.println(message); |
| 232 | } |
| 233 | |
| 234 | /* |
| 235 | * Standalone entry point. |
| 236 | * |
| 237 | * Run the test and report to stdout. |
| 238 | */ |
| 239 | public static void main (String args[]) throws Exception { |
| 240 | CounterMonitorTest test = new CounterMonitorTest(); |
| 241 | test.thresholdNotification(); |
| 242 | } |
| 243 | } |