Module dev.mccue.guava.concurrent

Package dev.mccue.guava.concurrent

Class ServiceManager.Listener

java.lang.Object

dev.mccue.guava.concurrent.ServiceManager.Listener

Enclosing class:

ServiceManager

public abstract static class ServiceManager.Listener
extends 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 service starts, or terminates), should attach Service.Listener service listeners to each individual service.

Since:

15.0 (present as an interface in 14.0)

Author:

Luke Sandberg

Constructor Summary

Constructors

Constructor	Description
Listener()

Method Summary

Modifier and Type	Method	Description
void	failure(Service service)	Called when a component service has State#FAILED 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 State#TERMINATED terminated or State#FAILED failed.

Methods inherited from class java.lang.Object

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

Constructor Details

Listener

public Listener()

Method Details

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 State#RUNNING running state. If any services fail during start up or State#FAILED fail/State#TERMINATED terminate before all other services have started State#RUNNING 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 State#TERMINATED terminated or State#FAILED failed.

failure

public void failure(Service service)

Called when a component service has State#FAILED failed.

Parameters:

service - The service that failed.