com.varra.jmx.mbean

Class HealthChecker

java.lang.Object

javax.management.NotificationBroadcasterSupport

com.varra.jmx.mbean.HealthChecker

All Implemented Interfaces:

HealthCheckerMBean, NotificationBroadcaster, NotificationEmitter

public class HealthChecker
extends NotificationBroadcasterSupport
implements HealthCheckerMBean

The MBean Implementation of the HealthCheckerMBean, provides the actual definition of the health Checking. Needs to be used by the MBean Manager to register/deRegister it to Application JMX Environment.
You can use the MBeanRegistration, so the MBeans will be registered in the standard MBean server deployed with the JRE.
Emitts the HealthCheckerMBeanNotification with the current status of the application.

Version:

1.0

Author:

Rajakrishna V. Reddy

Method Summary

Modifier and Type	Method and Description
static HealthChecker	getInstance() Gets the single instance of HealthChecker.
boolean	isAlive() Checks if this service is alive, and functioning well.
void	setAlive(boolean isAlive) Sets the alive status based on the status of the application that it is running in.

Methods inherited from class javax.management.NotificationBroadcasterSupport

addNotificationListener, getNotificationInfo, removeNotificationListener, removeNotificationListener, sendNotification

Methods inherited from class java.lang.Object

equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Method Detail

getInstance

public static HealthChecker getInstance()

Gets the single instance of HealthChecker.

Returns:

single instance of HealthChecker

isAlive

public boolean isAlive()

Description copied from interface: HealthCheckerMBean

Checks if this service is alive, and functioning well. Implementation of this method should be very light weight and synchronized.

Specified by:

isAlive in interface HealthCheckerMBean

Returns:

true, if is alive

setAlive

public void setAlive(boolean isAlive)

Sets the alive status based on the status of the application that it is running in. and sends the HealthCheckerMBeanNotification with the current status respectively.

Needs to be analyzed the status of the application based on its functionality and set this value.

Eg: Suppose it is running in mail application, which sends a mail for every free configured interval then this setAlive(boolean) should be set to true if the mail application is sending the mails correctly, else setAlive(boolean) should be set to false, as mail application has some issue in sending the mails.

Parameters:

isAlive - the isAlive to set