jdk/test/javax/management/monitor/NullAttributeValueTest.java - platform/libcore - Git at Google

 /*
  * Copyright (c) 2005, 2015, Oracle and/or its affiliates. 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 Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  * or visit www.oracle.com if you need additional information or have any
  * questions.
  */

 /*
  * @test
  * @bug 6200031 8025206
  * @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
  * @author Shanliang JIANG
  * @modules java.management
  * @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 volatile 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();

             return checkReceived(granularityperiod, "CounterMonitor");
         } finally {
             if (counterMonitor != null)
                 counterMonitor.stop();
         }
     }

     /**
      * 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();

             return checkReceived(granularityperiod, "GaugeMonitor");
         } finally {
             if (gaugeMonitor != null)
                 gaugeMonitor.stop();
         }
     }

     /**
      * 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();

             return checkReceived(granularityperiod, "StringMonitor");
         } finally {
             if (stringMonitor != null)
                 stringMonitor.stop();
         }
     }

     /**
      * 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;
     }

     private int checkReceived(long granularityperiod, String caller) throws InterruptedException {
         int i = 100;
         do {
             Thread.sleep(granularityperiod);
         } while (!messageReceived && i-- > 0);

         if (messageReceived) {
             echo("\tOK: " + caller + " notification received");
         } else {
             echo("\tKO: " + caller + " notification missed or not emitted");
         }

         return messageReceived ? 0 : 1;
     }

     /*
      * 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!");
         }
     }
 }
	/*
	* Copyright (c) 2005, 2015, Oracle and/or its affiliates. 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 Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
	* or visit www.oracle.com if you need additional information or have any
	* questions.
	*/

	/*
	* @test
	* @bug 6200031 8025206
	* @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
	* @author Shanliang JIANG
	* @modules java.management
	* @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 volatile 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();

	return checkReceived(granularityperiod, "CounterMonitor");
	} finally {
	if (counterMonitor != null)
	counterMonitor.stop();
	}
	}

	/**
	* 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();

	return checkReceived(granularityperiod, "GaugeMonitor");
	} finally {
	if (gaugeMonitor != null)
	gaugeMonitor.stop();
	}
	}

	/**
	* 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();

	return checkReceived(granularityperiod, "StringMonitor");
	} finally {
	if (stringMonitor != null)
	stringMonitor.stop();
	}
	}

	/**
	* 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;
	}

	private int checkReceived(long granularityperiod, String caller) throws InterruptedException {
	int i = 100;
	do {
	Thread.sleep(granularityperiod);
	} while (!messageReceived && i-- > 0);

	if (messageReceived) {
	echo("\tOK: " + caller + " notification received");
	} else {
	echo("\tKO: " + caller + " notification missed or not emitted");
	}

	return messageReceived ? 0 : 1;
	}

	/*
	* 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!");
	}
	}
	}