Java GaugeMonitor类代码示例

import javax.management.monitor.GaugeMonitor; //导入依赖的package包/类
/** Actions before every test case (common) */
public void setUp() {

    res = true;
    sensor.setDouble(new Double(0));
    sensor.setNullFlag(false);
    sensor.setExceptionFlag(false);

    server = MBeanServerFactory.createMBeanServer();
    monitor = new GaugeMonitor();

    try {
        monitorName = new ObjectName(
                "org.apache.harmony.test.func.api.javax.management.monitor."
                        + "gaugemonitor:type=GaugeMonitor,id=1");
        sensorName = new ObjectName(SinusFunction.SENSOR_NAME_TEMPLATE
                + "1");
    } catch (Throwable e) {
        e.printStackTrace();
        log.add("Test: ERROR: Internal error!");
        System.exit(106);
    }

    monitor.addNotificationListener(nListener, null, "handback");
}
 

import javax.management.monitor.GaugeMonitor; //导入依赖的package包/类
public void setUp() {
    try {
        server = MBeanServerFactory.createMBeanServer();
        monitor = new GaugeMonitor();
        sensor = new Impulse(100, 100, testedClass[0], testedClass[1]);

        server.registerMBean(monitor, new ObjectName(
                "org.apache.harmony.test.func.api.javax.management.monitor."
                        + "countermonitor:type=CounterMonitor,id=1"));
        sensorName = new ObjectName(Impulse.SENSOR_NAME_TEMPLATE + "1");
        server.registerMBean(sensor, sensorName);

        monitor.addNotificationListener(nListener, null, "handback");

        /* setup monitor */
        monitor.addObservedObject(sensorName);
        monitor.setObservedAttribute("Value");
        monitor.setGranularityPeriod(50);
        monitor.setNotifyHigh(true);
        monitor.setNotifyLow(true);

        Thread sensorThread = new Thread(sensor);
        sensorThread.setDaemon(true);
        sensorThread.start();

    } catch (Throwable t) {
        t.printStackTrace();
    }
}
 

import javax.management.monitor.GaugeMonitor; //导入依赖的package包/类
public static void main (String args[]) throws Exception {

        ObjectName[] mbeanNames = new ObjectName[6];
        ObservedObject[] monitored = new ObservedObject[6];
        ObjectName[] monitorNames = new ObjectName[6];
        Monitor[] monitor = new Monitor[6];
        String[] principals = { "role1", "role2" };
        String[] attributes = { "Integer", "Double", "String" };

        try {
            echo(">>> CREATE MBeanServer");
            MBeanServer server = MBeanServerFactory.newMBeanServer();

            for (int i = 0; i < 6; i++) {
                mbeanNames[i] =
                    new ObjectName(":type=ObservedObject,instance=" + i);
                monitored[i] = new ObservedObject();
                echo(">>> CREATE ObservedObject = " + mbeanNames[i].toString());
                server.registerMBean(monitored[i], mbeanNames[i]);

                switch (i) {
                    case 0:
                    case 3:
                        monitorNames[i] =
                            new ObjectName(":type=CounterMonitor,instance=" + i);
                        monitor[i] = new CounterMonitor();
                        break;
                    case 1:
                    case 4:
                        monitorNames[i] =
                            new ObjectName(":type=GaugeMonitor,instance=" + i);
                        monitor[i] = new GaugeMonitor();
                        break;
                    case 2:
                    case 5:
                        monitorNames[i] =
                            new ObjectName(":type=StringMonitor,instance=" + i);
                        monitor[i] = new StringMonitor();
                        break;
                }

                echo(">>> CREATE Monitor = " + monitorNames[i].toString());
                server.registerMBean(monitor[i], monitorNames[i]);
                monitor[i].addObservedObject(mbeanNames[i]);
                monitor[i].setObservedAttribute(attributes[i % 3]);
                monitor[i].setGranularityPeriod(500);
                final Monitor m = monitor[i];
                Subject subject = new Subject();
                echo(">>> RUN Principal = " + principals[i / 3]);
                subject.getPrincipals().add(new JMXPrincipal(principals[i / 3]));
                PrivilegedAction<Void> action = new PrivilegedAction<Void>() {
                    public Void run() {
                        m.start();
                        return null;
                    }
                };
                Subject.doAs(subject, action);
            }

            while(!testPrincipals(monitored, monitorNames, monitor, principals));

        } finally {
            for (int i = 0; i < 6; i++)
                if (monitor[i] != null)
                    monitor[i].stop();
        }
    }
 

import javax.management.monitor.GaugeMonitor; //导入依赖的package包/类
/**
 * Update the gauge and check for notifications
 */
public int gaugeMonitorNotification() throws Exception {

    GaugeMonitor gaugeMonitor = new GaugeMonitor();
    try {
        // 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());
        server.registerMBean(gaugeMonitor, gaugeMonitorName);

        echo(">>> ADD a listener to the GaugeMonitor");
        gaugeMonitor.addNotificationListener(this, null, null);

        //
        // MANAGEMENT OF A STANDARD MBEAN
        //

        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(false);
        echo("\tATTRIBUTE \"Notify Low  Flag\"  = false");
        echo("\tATTRIBUTE \"Notify High Flag\"  = false");

        Integer highThreshold = 3, lowThreshold = 2;
        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();

        // Check if notification was received
        //
        doWait();
        if (messageReceived) {
            echo("\tOK: GaugeMonitor got RUNTIME_ERROR notification!");
        } else {
            echo("\tKO: GaugeMonitor did not get " +
                 "RUNTIME_ERROR notification!");
            return 1;
        }
    } finally {
        messageReceived = false;
        if (gaugeMonitor != null)
            gaugeMonitor.stop();
    }

    return 0;
}
 

import javax.management.monitor.GaugeMonitor; //导入依赖的package包/类
/**
 * Run test
 */
public int runTest(int monitorType) throws Exception {


    ObjectName[] mbeanNames = new ObjectName[nTasks];
    ObservedObject[] monitored = new ObservedObject[nTasks];
    ObjectName[] monitorNames = new ObjectName[nTasks];
    Monitor[] monitor = new Monitor[nTasks];
    String[] attributes = { "Integer", "Double", "String" };

    try {
        echo(">>> CREATE MBeanServer");
        MBeanServer server = MBeanServerFactory.newMBeanServer();

        String domain = server.getDefaultDomain();

        for (int i = 0; i < nTasks; i++) {
            mbeanNames[i] =
                new ObjectName(":type=ObservedObject,instance=" + (i + 1));
            monitored[i] = new ObservedObject();
            echo(">>> CREATE ObservedObject = " + mbeanNames[i].toString());
            server.registerMBean(monitored[i], mbeanNames[i]);
            switch (monitorType) {
            case 1:
                monitorNames[i] = new ObjectName(":type=CounterMonitor," +
                                                 "instance=" + (i + 1));
                monitor[i] = new CounterMonitor();
                break;
            case 2:
                monitorNames[i] = new ObjectName(":type=GaugeMonitor," +
                                                 "instance=" + (i + 1));
                monitor[i] = new GaugeMonitor();
                break;
            case 3:
                monitorNames[i] = new ObjectName(":type=StringMonitor," +
                                                 "instance=" + (i + 1));
                monitor[i] = new StringMonitor();
                break;
            default:
                echo("Unsupported monitor type");
                return 1;
            }
            echo(">>> CREATE Monitor = " + monitorNames[i].toString());
            server.registerMBean(monitor[i], monitorNames[i]);
            monitor[i].addObservedObject(mbeanNames[i]);
            monitor[i].setObservedAttribute(attributes[monitorType-1]);
            monitor[i].setGranularityPeriod(50);
            monitor[i].start();
        }

        if (!waiter.waiting(MAX_WAITING_TIME)) {
            echo("Error, not all "+nTasks+" monitor tasks are called after "
                 +MAX_WAITING_TIME);
            return 1;
        }
    } finally {
        for (int i = 0; i < nTasks; i++)
            if (monitor[i] != null)
                monitor[i].stop();
    }

    echo("All "+nTasks+" monitors are called.");
    return 0;
}
 

import javax.management.monitor.GaugeMonitor; //导入依赖的package包/类
@Override
protected void addNotificationListener() throws Exception {
    
    JMXEndpoint ep = (JMXEndpoint) getEndpoint();
    // create the monitor bean
    Monitor bean = null;
    if (ep.getMonitorType().equals("counter")) {
        CounterMonitor counter = new CounterMonitor();
        Number initThreshold = convertNumberToAttributeType(ep.getInitThreshold(), ep.getJMXObjectName(), ep.getObservedAttribute());
        Number offset = convertNumberToAttributeType(ep.getOffset(), ep.getJMXObjectName(), ep.getObservedAttribute());
        Number modulus = convertNumberToAttributeType(ep.getModulus(), ep.getJMXObjectName(), ep.getObservedAttribute());
        counter.setInitThreshold(initThreshold);
        counter.setOffset(offset);
        counter.setModulus(modulus);
        counter.setDifferenceMode(ep.isDifferenceMode());
        counter.setNotify(true);
        bean = counter;
    } else if (ep.getMonitorType().equals("gauge")) {
        GaugeMonitor gm = new GaugeMonitor();
        gm.setNotifyHigh(ep.isNotifyHigh());
        gm.setNotifyLow(ep.isNotifyLow());
        gm.setDifferenceMode(ep.isDifferenceMode());
        Number highValue = convertNumberToAttributeType(ep.getThresholdHigh(), ep.getJMXObjectName(), ep.getObservedAttribute());
        Number lowValue = convertNumberToAttributeType(ep.getThresholdLow(), ep.getJMXObjectName(), ep.getObservedAttribute());
        gm.setThresholds(highValue, lowValue);
        bean = gm;
    } else if (ep.getMonitorType().equals("string")) {
        StringMonitor sm = new StringMonitor();
        sm.setNotifyDiffer(ep.isNotifyDiffer());
        sm.setNotifyMatch(ep.isNotifyMatch());
        sm.setStringToCompare(ep.getStringToCompare());
        bean = sm;
    }
    
    bean.addObservedObject(ep.getJMXObjectName());
    bean.setObservedAttribute(ep.getObservedAttribute());
    bean.setGranularityPeriod(ep.getGranularityPeriod());

    // register the bean
    mMonitorObjectName = new ObjectName(ep.getObjectDomain(), "name", "camel-jmx-monitor-" + UUID.randomUUID());
    ManagementFactory.getPlatformMBeanServer().registerMBean(bean, mMonitorObjectName); 
    
    // add ourselves as a listener to it
    NotificationFilter nf = ep.getNotificationFilter();
    getServerConnection().addNotificationListener(mMonitorObjectName, this, nf, bean);
    bean.start();
}
 

import javax.management.monitor.GaugeMonitor; //导入依赖的package包/类
public static void main(String[] args) throws Exception
{
   // Let's create the MBeanServer
   MBeanServer server = MBeanServerFactory.newMBeanServer();

   // Let's create a dynamic MBean and register it
   DynamicService serviceMBean = new DynamicService();
   ObjectName serviceName = new ObjectName("examples", "mbean", "dynamic");
   server.registerMBean(serviceMBean, serviceName);

   // Now let's register a Monitor
   // We would like to know if we have peaks in activity, so we can use JMX's
   // GaugeMonitor
   GaugeMonitor monitorMBean = new GaugeMonitor();
   ObjectName monitorName = new ObjectName("examples", "monitor", "gauge");
   server.registerMBean(monitorMBean, monitorName);

   // Setup the monitor: we want to be notified if we have too many clients or too less
   monitorMBean.setThresholds(new Integer(8), new Integer(4));
   // Setup the monitor: we want to know if a threshold is exceeded
   monitorMBean.setNotifyHigh(true);
   monitorMBean.setNotifyLow(true);
   // Setup the monitor: we're interested in absolute values of the number of clients
   monitorMBean.setDifferenceMode(false);
   // Setup the monitor: link to the service MBean
   monitorMBean.addObservedObject(serviceName);
   monitorMBean.setObservedAttribute("ConcurrentClients");
   // Setup the monitor: a short granularity period
   monitorMBean.setGranularityPeriod(50L);
   // Setup the monitor: register a listener
   monitorMBean.addNotificationListener(new NotificationListener()
   {
      public void handleNotification(Notification notification, Object handback)
      {
         System.out.println(notification);
      }
   }, null, null);
   // Setup the monitor: start it
   monitorMBean.start();

   // Now start also the service
   serviceMBean.start();
}
 

import javax.management.monitor.GaugeMonitor; //导入依赖的package包/类
/**
 * Update the gauge and check for notifications
 */
public int gaugeMonitorNotification() throws Exception {

    GaugeMonitor gaugeMonitor = new GaugeMonitor();
    try {
        // 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());
        server.registerMBean(gaugeMonitor, gaugeMonitorName);

        echo(">>> ADD a listener to the GaugeMonitor");
        gaugeMonitor.addNotificationListener(this, null, null);

        //
        // MANAGEMENT OF A STANDARD MBEAN
        //

        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(false);
        echo("\tATTRIBUTE \"Notify Low  Flag\"  = false");
        echo("\tATTRIBUTE \"Notify High Flag\"  = false");

        Integer highThreshold = 3, lowThreshold = 2;
        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 got RUNTIME_ERROR notification!");
        } else {
            echo("\tKO: GaugeMonitor did not get " +
                 "RUNTIME_ERROR notification!");
            return 1;
        }
    } finally {
        messageReceived = false;
        if (gaugeMonitor != null)
            gaugeMonitor.stop();
    }

    return 0;
}
 

import javax.management.monitor.GaugeMonitor; //导入依赖的package包/类
void run() throws Exception {
    final MBeanServer mbs = ManagementFactory.getPlatformMBeanServer();
    final ObjectName observedName = new ObjectName("a:b=c");
    final ObjectName monitorName = new ObjectName("a:type=Monitor");
    mbs.registerMBean(new GaugeMonitor(), monitorName);
    final GaugeMonitorMBean monitorProxy =
        JMX.newMBeanProxy(mbs, monitorName, GaugeMonitorMBean.class);
    final TestMBean observedProxy =
        JMX.newMBeanProxy(mbs, observedName, TestMBean.class);

    final Runnable sensitiveThing = new Runnable() {
        public void run() {
            doSensitiveThing(monitorProxy, observedName);
        }
    };

    final Runnable nothing = new Runnable() {
        public void run() {}
    };

    final Runnable withinGetAttribute =
        (when == When.IN_GET_ATTRIBUTE) ? sensitiveThing : nothing;

    mbs.registerMBean(new Test(withinGetAttribute), observedName);
    monitorProxy.addObservedObject(observedName);
    monitorProxy.setObservedAttribute("Thing");
    monitorProxy.setThresholds(105, 100);
    monitorProxy.setGranularityPeriod(10L); // 10 ms
    monitorProxy.setNotifyHigh(true);
    monitorProxy.setNotifyLow(true);
    monitorProxy.start();

    final int initGetCount = observedProxy.getGetCount();
    int getCount = initGetCount;
    for (int i = 0; i < 2000; i++) { // 2000 * 10 = 20 seconds
        getCount = observedProxy.getGetCount();
        if (getCount != initGetCount)
            break;
        Thread.sleep(10);
    }
    if (getCount <= initGetCount)
        throw new Exception("Test failed: presumable deadlock");
    // This won't show up as a deadlock in CTRL-\ or in
    // ThreadMXBean.findDeadlockedThreads(), because they don't
    // see that thread A is waiting for thread B (B.join()), and
    // thread B is waiting for a lock held by thread A

    // Now we know the monitor has observed the initial value,
    // so if we want to test notify behaviour we can trigger by
    // exceeding the threshold.
    if (when == When.IN_NOTIFY) {
        final AtomicInteger notifCount = new AtomicInteger();
        final NotificationListener listener = new NotificationListener() {
            public void handleNotification(Notification n, Object h) {
                Thread t = new Thread(sensitiveThing);
                t.start();
                try {
                    t.join();
                } catch (InterruptedException e) {
                    throw new RuntimeException(e);
                }
                notifCount.incrementAndGet();
            }
        };
        mbs.addNotificationListener(monitorName, listener, null, null);
        observedProxy.setThing(1000);
        for (int i = 0; i < 2000 && notifCount.get() == 0; i++)
            Thread.sleep(10);
        if (notifCount.get() == 0)
            throw new Exception("Test failed: presumable deadlock");
    }

}