org.wildfly.clustering.server.singleton

Class DistributedSingletonService<T>

java.lang.Object

org.wildfly.clustering.server.singleton.DistributedSingletonService<T>

All Implemented Interfaces:

org.jboss.msc.service.Service<T>, org.jboss.msc.value.Value<T>, ServiceProviderRegistration.Listener, PrimaryProxyContext<T>, SingletonContext<T>, Singleton, SingletonService<T>

public class DistributedSingletonService<T>
extends Object
implements SingletonService<T>, SingletonContext<T>, ServiceProviderRegistration.Listener, PrimaryProxyContext<T>

Decorates an MSC service ensuring that it is only started on one node in the cluster at any given time.

Author:

Paul Ferraro

Field Summary

Fields inherited from interface org.jboss.msc.service.Service

NULL, NULL_VALUE

Constructor Summary

Constructors

Constructor and Description
DistributedSingletonService(DistributedSingletonServiceContext<T> context)

Method Summary

Modifier and Type	Method and Description
CommandDispatcher<SingletonContext<T>>	getCommandDispatcher()
Optional<T>	getLocalValue()
org.jboss.msc.service.ServiceName	getServiceName()
T	getValue()
boolean	isPrimary()
void	providersChanged(Set<Node> nodes)
void	start()
void	start(org.jboss.msc.service.StartContext context)
void	stop()
void	stop(org.jboss.msc.service.StopContext context)

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.wildfly.clustering.singleton.Singleton

isMaster

Constructor Detail

DistributedSingletonService

public DistributedSingletonService(DistributedSingletonServiceContext<T> context)

Method Detail

start

public void start(org.jboss.msc.service.StartContext context)
           throws org.jboss.msc.service.StartException

Specified by:

start in interface org.jboss.msc.service.Service<T>

Throws:

org.jboss.msc.service.StartException

stop

public void stop(org.jboss.msc.service.StopContext context)

Specified by:

stop in interface org.jboss.msc.service.Service<T>

isPrimary

public boolean isPrimary()

Specified by:

isPrimary in interface Singleton

providersChanged

public void providersChanged(Set<Node> nodes)

Specified by:

providersChanged in interface ServiceProviderRegistration.Listener

start

public void start()

Specified by:

start in interface SingletonContext<T>

stop

public void stop()

Specified by:

stop in interface SingletonContext<T>

getValue

public T getValue()

Specified by:

getValue in interface org.jboss.msc.value.Value<T>

getLocalValue

public Optional<T> getLocalValue()

Specified by:

getLocalValue in interface SingletonContext<T>

getCommandDispatcher

public CommandDispatcher<SingletonContext<T>> getCommandDispatcher()

Specified by:

getCommandDispatcher in interface PrimaryProxyContext<T>

getServiceName

public org.jboss.msc.service.ServiceName getServiceName()

Specified by:

getServiceName in interface PrimaryProxyContext<T>