Package com.google.common.util.concurrent

Class ServiceManager.Listener

java.lang.Object

com.google.common.util.concurrent.ServiceManager.Listener

Enclosing class:

ServiceManager

@Beta
public abstract static class ServiceManager.Listener
extends java.lang.Object

A listener for the aggregate state changes of the services that are under management. Users that need to listen to more fine-grained events (such as when each particular service starts, or terminates), should attach service listeners to each individual service.

Since:

15.0 (present as an interface in 14.0)

Constructor Summary

Constructors

Constructor	Description
Listener()

Method Summary

Modifier and Type	Method	Description
void	failure(Service service)	Called when a component service has failed.
void	healthy()	Called when the service initially becomes healthy.
void	stopped()	Called when the all of the component services have reached a terminal state, either terminated or failed.

Methods inherited from class java.lang.Object

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

Constructor Detail

Listener

public Listener()

Method Detail

healthy

public void healthy()

Called when the service initially becomes healthy.

This will be called at most once after all the services have entered the running state. If any services fail during start up or fail/terminate before all other services have started running then this method will not be called.

stopped

public void stopped()

Called when the all of the component services have reached a terminal state, either terminated or failed.

failure

public void failure(Service service)

Called when a component service has failed.

Parameters:

service - The service that failed.