org.lsst.ccs.services

Class AgentMonitorService

java.lang.Object

org.lsst.ccs.services.AgentMonitorService

All Implemented Interfaces:

Runnable, HasLifecycle, AgentMonitorServiceMBean, AgentService

public class AgentMonitorService
extends Object
implements AgentMonitorServiceMBean, Runnable, HasLifecycle, AgentService

An Agent Service to monitor the status of the agent. This Service is activate for Worker agents and Services. It provides two interfaces: - a periodic task registered as "agentMonitorService" that will periodically check the status of the agent and publish Alerts if needed - an interface that can be reached via JMX MBeans for interface The overall status of the Agent is assessed by invoking all the components that implement AgentMonitor on the lookup component tree.

Author:

The LSST CCS Team

Field Summary

Fields

Modifier and Type	Field and Description
static String	AGENT_MONITOR_SERVICE_TASK

Constructor Summary

Constructors

Constructor and Description
AgentMonitorService()

Method Summary

Modifier and Type	Method and Description
void	build() First lifecycle hook.
String	getAgentServiceName() Get the name of this service.
String	getAgentStatus() Get the status of the current Agent.
void	postInit() Called from the enclosing Subsystem at construction phase.
void	run()
boolean	startForAgent(AgentInfo agentInfo) This method is invoked after an agent service is created to see if this service is to be started for the tiven Agent.

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.lsst.ccs.framework.HasLifecycle

init, postBuild, postShutdown, postStart, shutdown, start

Field Detail

AGENT_MONITOR_SERVICE_TASK

public static final String AGENT_MONITOR_SERVICE_TASK

See Also:

Constant Field Values

Constructor Detail

AgentMonitorService

public AgentMonitorService()

Method Detail

getAgentServiceName

public String getAgentServiceName()

Description copied from interface: AgentService

Get the name of this service. This name will be used to add the given service to the lookup tree.

Specified by:

getAgentServiceName in interface AgentService

Returns:

the AgentService name.

startForAgent

public boolean startForAgent(AgentInfo agentInfo)

Description copied from interface: AgentService

This method is invoked after an agent service is created to see if this service is to be started for the tiven Agent.

Specified by:

startForAgent in interface AgentService

Returns:

true if the service is to be added to the given agent.

build

public void build()

Description copied from interface: HasLifecycle

First lifecycle hook. Modification of the component tree is allowed at this stage. After this stage the tree of component cannot be modified anymore. This is where agent periodic tasks should be scheduled.

Specified by:

build in interface HasLifecycle

postInit

public void postInit()

Description copied from interface: HasLifecycle

Called from the enclosing Subsystem at construction phase. This method is called after init and postInit have been called on this component's children.

Specified by:

postInit in interface HasLifecycle

run

public void run()

Specified by:

run in interface Runnable

getAgentStatus

public String getAgentStatus()

Get the status of the current Agent. Internally all component implementing AgentMonitor are invoked to report on their own status.

Specified by:

getAgentStatus in interface AgentMonitorServiceMBean

Returns:

the status for this agent.