/*
* Copyright 2005 Sun Microsystems, Inc. All Rights Reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation.
*
* This code is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
* CA 95054 USA or visit www.sun.com if you need additional information or
* have any questions.
*/
/*
* @test
* @bug 6200031
* @summary Test that the counter/gauge/string monitors emit a
* jmx.monitor.error.type notification when the attribute
* being monitored returns a null value.
* @author Luis-Miguel Alventosa
* @run clean NullAttributeValueTest
* @run build NullAttributeValueTest
* @run main NullAttributeValueTest
*/
import javax.management.*;
import javax.management.monitor.*;
public class NullAttributeValueTest implements NotificationListener {
// Flag to notify that a message has been received
private boolean messageReceived = false;
// MBean class
public class ObservedObject implements ObservedObjectMBean {
public Integer getIntegerAttribute() {
return null;
}
public String getStringAttribute() {
return null;
}
}
// MBean interface
public interface ObservedObjectMBean {
public Integer getIntegerAttribute();
public String getStringAttribute();
}
// Notification handler
public void handleNotification(Notification notification,
Object handback) {
MonitorNotification n = (MonitorNotification) notification;
echo("\tInside handleNotification...");
String type = n.getType();
try {
if (type.equals(
MonitorNotification.OBSERVED_ATTRIBUTE_TYPE_ERROR)) {
echo("\t\t" + n.getObservedAttribute() + " is null");
echo("\t\tDerived Gauge = " + n.getDerivedGauge());
echo("\t\tTrigger = " + n.getTrigger());
messageReceived = true;
} else {
echo("\t\tSkipping notification of type: " + type);
}
} catch (Exception e) {
echo("\tError in handleNotification!");
e.printStackTrace(System.out);
}
}
/**
* Update the counter and check for notifications
*/
public int counterMonitorNotification() throws Exception {
CounterMonitor counterMonitor = null;
try {
MBeanServer server = MBeanServerFactory.newMBeanServer();
String domain = server.getDefaultDomain();
// Create a new CounterMonitor MBean and add it to the MBeanServer.
//
echo(">>> CREATE a new CounterMonitor MBean");
ObjectName counterMonitorName = new ObjectName(
domain + ":type=" + CounterMonitor.class.getName());
counterMonitor = new CounterMonitor();
server.registerMBean(counterMonitor, counterMonitorName);
echo(">>> ADD a listener to the CounterMonitor");
counterMonitor.addNotificationListener(this, null, null);
//
// MANAGEMENT OF A STANDARD MBEAN
//
echo(">>> CREATE a new ObservedObject MBean");
ObjectName obsObjName =
ObjectName.getInstance(domain + ":type=ObservedObject");
ObservedObject obsObj = new ObservedObject();
server.registerMBean(obsObj, obsObjName);
echo(">>> SET the attributes of the CounterMonitor:");
counterMonitor.addObservedObject(obsObjName);
echo("\tATTRIBUTE \"ObservedObject\" = " + obsObjName);
counterMonitor.setObservedAttribute("IntegerAttribute");
echo("\tATTRIBUTE \"ObservedAttribute\" = IntegerAttribute");
counterMonitor.setNotify(true);
echo("\tATTRIBUTE \"NotifyFlag\" = true");
Integer threshold = 2;
counterMonitor.setInitThreshold(threshold);
echo("\tATTRIBUTE \"Threshold\" = " + threshold);
int granularityperiod = 500;
counterMonitor.setGranularityPeriod(granularityperiod);
echo("\tATTRIBUTE \"GranularityPeriod\" = " + granularityperiod);
echo(">>> START the CounterMonitor");
counterMonitor.start();
// Wait for granularity period (multiplied by 2 for sure)
//
Thread.sleep(granularityperiod * 2);
// Check if notification was received
//
if (messageReceived) {
echo("\tOK: CounterMonitor notification received");
} else {
echo("\tKO: CounterMonitor notification missed or not emitted");
return 1;
}
} finally {
if (counterMonitor != null)
counterMonitor.stop();
}
return 0;
}
/**
* Update the gauge and check for notifications
*/
public int gaugeMonitorNotification() throws Exception {
GaugeMonitor gaugeMonitor = null;
try {
MBeanServer server = MBeanServerFactory.newMBeanServer();
String domain = server.getDefaultDomain();
// Create a new GaugeMonitor MBean and add it to the MBeanServer.
//
echo(">>> CREATE a new GaugeMonitor MBean");
ObjectName gaugeMonitorName = new ObjectName(
domain + ":type=" + GaugeMonitor.class.getName());
gaugeMonitor = new GaugeMonitor();
server.registerMBean(gaugeMonitor, gaugeMonitorName);
echo(">>> ADD a listener to the GaugeMonitor");
gaugeMonitor.addNotificationListener(this, null, null);
//
// MANAGEMENT OF A STANDARD MBEAN
//
echo(">>> CREATE a new ObservedObject MBean");
ObjectName obsObjName =
ObjectName.getInstance(domain + ":type=ObservedObject");
ObservedObject obsObj = new ObservedObject();
server.registerMBean(obsObj, obsObjName);
echo(">>> SET the attributes of the GaugeMonitor:");
gaugeMonitor.addObservedObject(obsObjName);
echo("\tATTRIBUTE \"ObservedObject\" = " + obsObjName);
gaugeMonitor.setObservedAttribute("IntegerAttribute");
echo("\tATTRIBUTE \"ObservedAttribute\" = IntegerAttribute");
gaugeMonitor.setNotifyLow(false);
gaugeMonitor.setNotifyHigh(true);
echo("\tATTRIBUTE \"Notify Low Flag\" = false");
echo("\tATTRIBUTE \"Notify High Flag\" = true");
Double highThreshold = 3.0, lowThreshold = 2.5;
gaugeMonitor.setThresholds(highThreshold, lowThreshold);
echo("\tATTRIBUTE \"Low Threshold\" = " + lowThreshold);
echo("\tATTRIBUTE \"High Threshold\" = " + highThreshold);
int granularityperiod = 500;
gaugeMonitor.setGranularityPeriod(granularityperiod);
echo("\tATTRIBUTE \"GranularityPeriod\" = " + granularityperiod);
echo(">>> START the GaugeMonitor");
gaugeMonitor.start();
// Wait for granularity period (multiplied by 2 for sure)
//
Thread.sleep(granularityperiod * 2);
// Check if notification was received
//
if (messageReceived) {
echo("\tOK: GaugeMonitor notification received");
} else {
echo("\tKO: GaugeMonitor notification missed or not emitted");
return 1;
}
} finally {
if (gaugeMonitor != null)
gaugeMonitor.stop();
}
return 0;
}
/**
* Update the string and check for notifications
*/
public int stringMonitorNotification() throws Exception {
StringMonitor stringMonitor = null;
try {
MBeanServer server = MBeanServerFactory.newMBeanServer();
String domain = server.getDefaultDomain();
// Create a new StringMonitor MBean and add it to the MBeanServer.
//
echo(">>> CREATE a new StringMonitor MBean");
ObjectName stringMonitorName = new ObjectName(
domain + ":type=" + StringMonitor.class.getName());
stringMonitor = new StringMonitor();
server.registerMBean(stringMonitor, stringMonitorName);
echo(">>> ADD a listener to the StringMonitor");
stringMonitor.addNotificationListener(this, null, null);
//
// MANAGEMENT OF A STANDARD MBEAN
//
echo(">>> CREATE a new ObservedObject MBean");
ObjectName obsObjName =
ObjectName.getInstance(domain + ":type=ObservedObject");
ObservedObject obsObj = new ObservedObject();
server.registerMBean(obsObj, obsObjName);
echo(">>> SET the attributes of the StringMonitor:");
stringMonitor.addObservedObject(obsObjName);
echo("\tATTRIBUTE \"ObservedObject\" = " + obsObjName);
stringMonitor.setObservedAttribute("StringAttribute");
echo("\tATTRIBUTE \"ObservedAttribute\" = StringAttribute");
stringMonitor.setNotifyMatch(true);
echo("\tATTRIBUTE \"NotifyMatch\" = true");
stringMonitor.setNotifyDiffer(false);
echo("\tATTRIBUTE \"NotifyDiffer\" = false");
stringMonitor.setStringToCompare("do_match_now");
echo("\tATTRIBUTE \"StringToCompare\" = \"do_match_now\"");
int granularityperiod = 500;
stringMonitor.setGranularityPeriod(granularityperiod);
echo("\tATTRIBUTE \"GranularityPeriod\" = " + granularityperiod);
echo(">>> START the StringMonitor");
stringMonitor.start();
// Wait for granularity period (multiplied by 2 for sure)
//
Thread.sleep(granularityperiod * 2);
// Check if notification was received
//
if (messageReceived) {
echo("\tOK: StringMonitor notification received");
} else {
echo("\tKO: StringMonitor notification missed or not emitted");
return 1;
}
} finally {
if (stringMonitor != null)
stringMonitor.stop();
}
return 0;
}
/**
* Test the monitor notifications.
*/
public int monitorNotifications() throws Exception {
echo(">>> ----------------------------------------");
messageReceived = false;
int error = counterMonitorNotification();
echo(">>> ----------------------------------------");
messageReceived = false;
error += gaugeMonitorNotification();
echo(">>> ----------------------------------------");
messageReceived = false;
error += stringMonitorNotification();
echo(">>> ----------------------------------------");
return error;
}
/*
* Print message
*/
private static void echo(String message) {
System.out.println(message);
}
/*
* Standalone entry point.
*
* Run the test and report to stdout.
*/
public static void main (String args[]) throws Exception {
NullAttributeValueTest test = new NullAttributeValueTest();
int error = test.monitorNotifications();
if (error > 0) {
echo(">>> Unhappy Bye, Bye!");
throw new IllegalStateException("Test FAILED: Didn't get all " +
"the notifications that were " +
"expected by the test!");
} else {
echo(">>> Happy Bye, Bye!");
}
}
}