org.apache.flume.lifecycle
Class LifecycleSupervisor

java.lang.Object
  extended by org.apache.flume.lifecycle.LifecycleSupervisor
All Implemented Interfaces:
LifecycleAware

public class LifecycleSupervisor
extends Object
implements LifecycleAware


Nested Class Summary
static class LifecycleSupervisor.MonitorRunnable
           
static class LifecycleSupervisor.Status
           
static class LifecycleSupervisor.SupervisorPolicy
           
 
Constructor Summary
LifecycleSupervisor()
           
 
Method Summary
 void fail()
           
 LifecycleState getLifecycleState()
           Return the current state of the service or component.
 boolean isComponentInErrorState(LifecycleAware component)
           
 void setDesiredState(LifecycleAware lifecycleAware, LifecycleState desiredState)
           
 void start()
           Starts a service or component.
 void stop()
           Stops a service or component.
 void supervise(LifecycleAware lifecycleAware, LifecycleSupervisor.SupervisorPolicy policy, LifecycleState desiredState)
           
 void unsupervise(LifecycleAware lifecycleAware)
           
 
Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
 

Constructor Detail

LifecycleSupervisor

public LifecycleSupervisor()
Method Detail

start

public void start()
Description copied from interface: LifecycleAware

Starts a service or component.

Implementations should determine the result of any start logic and effect the return value of LifecycleAware.getLifecycleState() accordingly.

Specified by:
start in interface LifecycleAware

stop

public void stop()
Description copied from interface: LifecycleAware

Stops a service or component.

Implementations should determine the result of any stop logic and effect the return value of LifecycleAware.getLifecycleState() accordingly.

Specified by:
stop in interface LifecycleAware

fail

public void fail()

supervise

public void supervise(LifecycleAware lifecycleAware,
                      LifecycleSupervisor.SupervisorPolicy policy,
                      LifecycleState desiredState)

unsupervise

public void unsupervise(LifecycleAware lifecycleAware)

setDesiredState

public void setDesiredState(LifecycleAware lifecycleAware,
                            LifecycleState desiredState)

getLifecycleState

public LifecycleState getLifecycleState()
Description copied from interface: LifecycleAware

Return the current state of the service or component.

Specified by:
getLifecycleState in interface LifecycleAware

isComponentInErrorState

public boolean isComponentInErrorState(LifecycleAware component)


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