@Override
public void virtualMachineRemoved(VirtualMachine virtualMachine) {
movingAverageStatistics.clear(virtualMachine.getUid());
final String groupUid = generateGroupUid(virtualMachine.getUid());
Alert[] alertsByGroupUid =
((InternalAlertManager) admin.getAlertManager())
.getAlertRepository()
.getAlertsByGroupUid(groupUid);
if (alertsByGroupUid.length != 0 && !alertsByGroupUid[0].getStatus().isResolved()) {
AlertFactory factory = new AlertFactory();
factory.name(ALERT_NAME);
factory.groupUid(groupUid);
factory.description(
AlertBeanUtils.getGridComponentShortName(virtualMachine)
+ " Heap memory is unavailable; JVM has been removed");
factory.severity(AlertSeverity.WARNING);
factory.status(AlertStatus.NA);
factory.componentUid(virtualMachine.getUid());
factory.componentDescription(AlertBeanUtils.getGridComponentDescription(virtualMachine));
factory.config(config.getProperties());
Alert alert = factory.toAlert();
admin.getAlertManager().triggerAlert(new HeapMemoryUtilizationAlert(alert));
}
}
@Override
public void afterPropertiesSet() throws Exception {
validateProperties();
long measurementPeriod = config.getMeasurementPeriod();
int period = (int) (measurementPeriod / StatisticsMonitor.DEFAULT_MONITOR_INTERVAL);
movingAverageStatistics = new MovingAverageStatistics(period);
admin.getVirtualMachines().getVirtualMachineRemoved().add(this);
admin.getVirtualMachines().getVirtualMachineStatisticsChanged().add(this);
admin.getVirtualMachines().startStatisticsMonitor();
}
@Override
public void setProperties(Map<String, String> properties) {
config.setProperties(properties);
}
@Override
public Map<String, String> getProperties() {
return config.getProperties();
}
private String getPeriodOfTime(VirtualMachineStatisticsChangedEvent event) {
return TimeUtil.format(config.getMeasurementPeriod());
}
@Override
public void virtualMachineStatisticsChanged(VirtualMachineStatisticsChangedEvent event) {
int highThreshold = config.getHighThresholdPerc();
int lowThreshold = config.getLowThresholdPerc();
double memoryAvg = calcAverageWithinPeriod(event);
if (memoryAvg < 0) return; // period hasn't passed
if (memoryAvg > highThreshold) {
final String groupUid = generateGroupUid(event.getVirtualMachine().getUid());
AlertFactory factory = new AlertFactory();
factory.name(ALERT_NAME);
factory.groupUid(groupUid);
factory.description(
AlertBeanUtils.getGridComponentShortName(event.getVirtualMachine())
+ " Heap memory crossed above a "
+ highThreshold
+ "% threshold, for a period of "
+ TimeUtil.format(config.getMeasurementPeriod())
+ ", with an average memory of "
+ NUMBER_FORMAT.format(memoryAvg)
+ "%");
factory.severity(AlertSeverity.WARNING);
factory.status(AlertStatus.RAISED);
factory.componentUid(event.getVirtualMachine().getUid());
factory.componentDescription(
AlertBeanUtils.getGridComponentDescription(event.getVirtualMachine()));
factory.config(config.getProperties());
factory.putProperty(
HeapMemoryUtilizationAlert.HOST_ADDRESS,
event.getVirtualMachine().getMachine().getHostAddress());
factory.putProperty(
HeapMemoryUtilizationAlert.HOST_NAME,
event.getVirtualMachine().getMachine().getHostName());
factory.putProperty(
HeapMemoryUtilizationAlert.CPU_UTILIZATION,
AlertBeanUtils.getCpuPercToString(event.getStatistics().getCpuPerc()));
factory.putProperty(
HeapMemoryUtilizationAlert.PROCESS_ID,
String.valueOf(event.getVirtualMachine().getDetails().getPid()));
factory.putProperty(
HeapMemoryUtilizationAlert.COMPONENT_NAME,
AlertBeanUtils.getGridComponentFullName(event.getVirtualMachine()));
factory.putProperty(
HeapMemoryUtilizationAlert.HEAP_UTILIZATION,
String.valueOf(event.getStatistics().getMemoryHeapUsedPerc()));
factory.putProperty(
HeapMemoryUtilizationAlert.MAX_HEAP_IN_BYTES,
String.valueOf(event.getVirtualMachine().getDetails().getMemoryHeapMaxInBytes()));
Alert alert = factory.toAlert();
admin.getAlertManager().triggerAlert(new HeapMemoryUtilizationAlert(alert));
} else if (memoryAvg < lowThreshold) {
final String groupUid = generateGroupUid(event.getVirtualMachine().getUid());
Alert[] alertsByGroupUid =
((InternalAlertManager) admin.getAlertManager())
.getAlertRepository()
.getAlertsByGroupUid(groupUid);
if (alertsByGroupUid.length != 0 && !alertsByGroupUid[0].getStatus().isResolved()) {
AlertFactory factory = new AlertFactory();
factory.name(ALERT_NAME);
factory.groupUid(groupUid);
factory.description(
AlertBeanUtils.getGridComponentShortName(event.getVirtualMachine())
+ " Heap memory crossed below a "
+ lowThreshold
+ "% threshold, for a period of "
+ getPeriodOfTime(event)
+ ", with an average memory of "
+ NUMBER_FORMAT.format(memoryAvg)
+ "%");
factory.severity(AlertSeverity.WARNING);
factory.status(AlertStatus.RESOLVED);
factory.componentUid(event.getVirtualMachine().getUid());
factory.componentDescription(
AlertBeanUtils.getGridComponentDescription(event.getVirtualMachine()));
factory.config(config.getProperties());
factory.putProperty(
HeapMemoryUtilizationAlert.HOST_ADDRESS,
event.getVirtualMachine().getMachine().getHostAddress());
factory.putProperty(
HeapMemoryUtilizationAlert.HOST_NAME,
event.getVirtualMachine().getMachine().getHostName());
factory.putProperty(
HeapMemoryUtilizationAlert.CPU_UTILIZATION,
AlertBeanUtils.getCpuPercToString(event.getStatistics().getCpuPerc()));
factory.putProperty(
HeapMemoryUtilizationAlert.PROCESS_ID,
String.valueOf(event.getVirtualMachine().getDetails().getPid()));
factory.putProperty(
HeapMemoryUtilizationAlert.COMPONENT_NAME,
AlertBeanUtils.getGridComponentFullName(event.getVirtualMachine()));
factory.putProperty(
HeapMemoryUtilizationAlert.HEAP_UTILIZATION,
String.valueOf(event.getStatistics().getMemoryHeapUsedPerc()));
factory.putProperty(
HeapMemoryUtilizationAlert.MAX_HEAP_IN_BYTES,
String.valueOf(event.getVirtualMachine().getDetails().getMemoryHeapMaxInBytes()));
Alert alert = factory.toAlert();
admin.getAlertManager().triggerAlert(new HeapMemoryUtilizationAlert(alert));
}
}
}
private void validateProperties() {
if (config.getHighThresholdPerc() == null) {
throw new BeanConfigurationException("High threshold property is null");
}
if (config.getLowThresholdPerc() == null) {
throw new BeanConfigurationException("Low threshold property is null");
}
if (config.getMeasurementPeriod() == null) {
throw new BeanConfigurationException("Measurement period property is null");
}
if (config.getHighThresholdPerc() < config.getLowThresholdPerc()) {
throw new BeanConfigurationException(
"Low threshold ["
+ config.getLowThresholdPerc()
+ "%] must be less than high threshold value ["
+ config.getHighThresholdPerc()
+ "%]");
}
if (config.getHighThresholdPerc() < 0) {
throw new BeanConfigurationException(
"High threshold [" + config.getHighThresholdPerc() + "%] must greater than zero");
}
if (config.getLowThresholdPerc() < 0) {
throw new BeanConfigurationException(
"Low threshold [" + config.getLowThresholdPerc() + "%] must greater or equal to zero");
}
if (config.getMeasurementPeriod() < StatisticsMonitor.DEFAULT_MONITOR_INTERVAL) {
throw new BeanConfigurationException(
"Measurement period ["
+ config.getMeasurementPeriod()
+ " ms] must be greater than ["
+ StatisticsMonitor.DEFAULT_MONITOR_INTERVAL
+ " ms]");
}
}