Package javax.management

Examples of javax.management.NotificationEmitter

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    }

    private void registerMBean(final Object mbean, final Class<?> mbeanInterface, final String name) throws Exception {
        MBeanServer server = java.lang.management.ManagementFactory.getPlatformMBeanServer();
        ObjectName on = new ObjectName(name);
        NotificationEmitter emitter = null;
        if (mbean instanceof AlertMonitor) {
            AlertMonitor monitor = (AlertMonitor) mbean;
            monitor.setObjectName(on);
            emitter = monitor;
        }
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    }

    private void registerMBean(final Object mbean, final Class<?> mbeanInterface, final String name) throws Exception {
        final MBeanServer server = java.lang.management.ManagementFactory.getPlatformMBeanServer();
        final ObjectName on = new ObjectName(name);
        NotificationEmitter emitter = null;
        if (mbean instanceof AlertMonitor) {
            final AlertMonitor monitor = (AlertMonitor) mbean;
            monitor.setObjectName(on);
            emitter = monitor;
        }
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            }
        };
        NotificationFilter filter = null;
        Object handback = null;
        final ScanState before;
        final NotificationEmitter emitter = (NotificationEmitter)proxy;
        emitter.addNotificationListener(listener, filter, handback);
        before = proxy.getState();
        op.call();
        try {
            final Notification notification =
                    queue.poll(3000,TimeUnit.MILLISECONDS);
            assertEquals(AttributeChangeNotification.ATTRIBUTE_CHANGE,
                    notification.getType());
            assertEquals(AttributeChangeNotification.class,
                    notification.getClass());
            assertEquals(ScanManager.SCAN_MANAGER_NAME,
                    notification.getSource());
            AttributeChangeNotification acn =
                    (AttributeChangeNotification)notification;
            assertEquals("State",acn.getAttributeName());
            assertEquals(ScanState.class.getName(),acn.getAttributeType());
            assertEquals(before,ScanState.valueOf((String)acn.getOldValue()));
            assertContained(after,ScanState.valueOf((String)acn.getNewValue()));
            emitter.removeNotificationListener(listener,filter,handback);
        } finally {
            try {
                op.cancel();
            } catch (Exception x) {
                System.err.println("Failed to cleanup: "+x);
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            }
        };
        NotificationFilter filter = null;
        Object handback = null;
        final ScanState before;
        final NotificationEmitter emitter = (NotificationEmitter)
                makeNotificationEmitter(proxy,DirectoryScannerMXBean.class);
        emitter.addNotificationListener(listener, filter, handback);
        before = proxy.getState();
        op.call();
        try {
            final Notification notification =
                    queue.poll(3000,TimeUnit.MILLISECONDS);
            assertEquals(AttributeChangeNotification.ATTRIBUTE_CHANGE,
                    notification.getType());
            assertEquals(AttributeChangeNotification.class,
                    notification.getClass());
            assertEquals(getObjectName(proxy),
                    notification.getSource());
            AttributeChangeNotification acn =
                    (AttributeChangeNotification)notification;
            assertEquals("State",acn.getAttributeName());
            assertEquals(ScanState.class.getName(),acn.getAttributeType());
            assertEquals(before,ScanState.valueOf((String)acn.getOldValue()));
            assertContained(after,ScanState.valueOf((String)acn.getNewValue()));
            emitter.removeNotificationListener(listener,filter,handback);
        } finally {
            try {
                op.cancel();
            } catch (Exception x) {
                System.err.println("Failed to cleanup: "+x);
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    }

    private void registerMBean(final Object mbean, final Class<?> mbeanInterface, final String name) throws Exception {
        final MBeanServer server = java.lang.management.ManagementFactory.getPlatformMBeanServer();
        final ObjectName on = new ObjectName(name);
        NotificationEmitter emitter = null;
        if (mbean instanceof AlertMonitor) {
            final AlertMonitor monitor = (AlertMonitor) mbean;
            monitor.setObjectName(on);
            emitter = monitor;
        }
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   * Hidden constructor. The class is a classical singleton as we need only one
   * instance per JVM instance.
   */
  private MemoryObserver() {
    MemoryMXBean mbean = ManagementFactory.getMemoryMXBean();
    NotificationEmitter emitter = (NotificationEmitter) mbean;
    listener = new MemoryNotificationListener();
    emitter.addNotificationListener(listener, null, null);
    List<MemoryPoolMXBean> pools = ManagementFactory.getMemoryPoolMXBeans();
    // activate threshhold for all those of interest
    for (MemoryPoolMXBean pool : pools) {
      // if (pool.getType() == MemoryType.HEAP) {
      if (pool.isCollectionUsageThresholdSupported()) {
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    // register itself to the {@link MemoryMXBean} to receive
    // notification when the used memory exceed the threshold
    // (about to GC), the notification is handled in
    // {@link #handleNotification(Notification, Object)}
    MemoryMXBean memBean     = ManagementFactory.getMemoryMXBean();
      NotificationEmitter ne    = (NotificationEmitter)memBean ;
      //ne.addNotificationListener(this, null, null);
   
      // setup local folder to store temporary files which contain
      // tuples that cannot feet in memory.
     
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        MeasurableMonitor mMon = (MeasurableMonitor)config.getEntry(getComponentName(),
                                                                    "monitor",
                                                                    MeasurableMonitor.class,
                                                                    new ProcessMemoryMonitor());
        if(mMon instanceof ProcessMemoryMonitor) {
            NotificationEmitter emitter = (NotificationEmitter)((ProcessMemoryMonitor)mMon).getMXBean();
            jmxListener = new JMXNotificationListener();
            emitter.addNotificationListener(jmxListener, null, null);
        }
        return mMon;
    }
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