org.apache.nifi.cluster.protocol.impl

Class ClusterServiceLocator

java.lang.Object

org.apache.nifi.cluster.protocol.impl.ClusterServiceLocator

All Implemented Interfaces:

ServiceDiscovery

public class ClusterServiceLocator
extends Object
implements ServiceDiscovery

Implements the ServiceLocator interface for locating the socket address of a cluster service. Depending on configuration, the address may be located using service discovery. If using service discovery, then the service methods must be used for starting and stopping discovery. Service discovery may be used in conjunction with a fixed port. In this case, the service discovery will yield the service IP/host while the fixed port will be used for the port. Alternatively, the instance may be configured with exact service location, in which case, no service discovery occurs and the caller will always receive the configured service.

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static class	ClusterServiceLocator.AttemptsConfig

Field Summary

Fields

Modifier and Type	Field and Description
private ClusterServiceLocator.AttemptsConfig	attemptsConfig
private DiscoverableService	fixedService
private int	fixedServicePort
private static org.slf4j.Logger	logger
private AtomicBoolean	running
private ClusterServiceDiscovery	serviceDiscovery
private String	serviceName

Constructor Summary

Constructors

Constructor and Description
ClusterServiceLocator(ClusterServiceDiscovery serviceDiscovery)
ClusterServiceLocator(ClusterServiceDiscovery serviceDiscovery, int fixedServicePort)
ClusterServiceLocator(DiscoverableService fixedService)

Method Summary

Methods

Modifier and Type	Method and Description
ClusterServiceLocator.AttemptsConfig	getAttemptsConfig()
DiscoverableService	getService()
boolean	isRunning()
void	setAttemptsConfig(ClusterServiceLocator.AttemptsConfig config)
void	start()
void	stop()

Methods inherited from class java.lang.Object

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

Field Detail

logger

private static final org.slf4j.Logger logger

serviceName

private final String serviceName

serviceDiscovery

private final ClusterServiceDiscovery serviceDiscovery

fixedService

private final DiscoverableService fixedService

fixedServicePort

private final int fixedServicePort

attemptsConfig

private final ClusterServiceLocator.AttemptsConfig attemptsConfig

running

private final AtomicBoolean running

Constructor Detail

ClusterServiceLocator

public ClusterServiceLocator(ClusterServiceDiscovery serviceDiscovery)

ClusterServiceLocator

public ClusterServiceLocator(ClusterServiceDiscovery serviceDiscovery,
                     int fixedServicePort)

ClusterServiceLocator

public ClusterServiceLocator(DiscoverableService fixedService)

Method Detail

getService

public DiscoverableService getService()

Specified by:

getService in interface ServiceDiscovery

isRunning

public boolean isRunning()

start

public void start()
           throws IOException

Throws:

IOException

stop

public void stop()
          throws IOException

Throws:

IOException

setAttemptsConfig

public void setAttemptsConfig(ClusterServiceLocator.AttemptsConfig config)

getAttemptsConfig

public ClusterServiceLocator.AttemptsConfig getAttemptsConfig()