org.apache.druid.rpc

Class DiscoveryServiceLocator

java.lang.Object

org.apache.druid.rpc.DiscoveryServiceLocator

All Implemented Interfaces:

Closeable, AutoCloseable, ServiceLocator

public class DiscoveryServiceLocator
extends Object
implements ServiceLocator

A ServiceLocator that uses DruidNodeDiscovery.

Constructor Summary

Constructors

Constructor and Description
DiscoveryServiceLocator(DruidNodeDiscoveryProvider discoveryProvider, NodeRole nodeRole)

Method Summary

Modifier and Type	Method and Description
void	close()
com.google.common.util.concurrent.ListenableFuture<ServiceLocations>	locate() Returns a future that resolves to a set of ServiceLocation.
void	start()

Methods inherited from class java.lang.Object

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

Constructor Detail

DiscoveryServiceLocator

public DiscoveryServiceLocator(DruidNodeDiscoveryProvider discoveryProvider,
                               NodeRole nodeRole)

Method Detail

locate

public com.google.common.util.concurrent.ListenableFuture<ServiceLocations> locate()

Description copied from interface: ServiceLocator

Returns a future that resolves to a set of ServiceLocation. If the returned object returns true from ServiceLocations.isClosed(), it means the service has closed permanently. Otherwise, any of the returned locations in ServiceLocations.getLocations() is a viable selection. It is possible for the list of locations to be empty. This means that the service is not currently available, but also has not been closed, so it may become available at some point in the future.

Specified by:

locate in interface ServiceLocator

start

public void start()

close

public void close()

Specified by:

close in interface Closeable

Specified by:

close in interface AutoCloseable

Specified by:

close in interface ServiceLocator