org.apache.nifi.cluster.protocol.impl

Class ClusterServicesBroadcaster

java.lang.Object

org.apache.nifi.cluster.protocol.impl.ClusterServicesBroadcaster

All Implemented Interfaces:

MulticastServicesBroadcaster, ServicesBroadcaster

public class ClusterServicesBroadcaster
extends Object
implements MulticastServicesBroadcaster

Broadcasts services used by the clustering software using multicast communication. A configurable delay occurs after broadcasting the collection of services. The client caller is responsible for starting and stopping the broadcasting. The instance must be stopped before termination of the JVM to ensure proper resource clean-up.

Author:

unattributed

Field Summary

Fields

Modifier and Type	Field and Description
private int	broadcastDelayMs
private Timer	broadcaster
private static org.slf4j.Logger	logger
private InetSocketAddress	multicastAddress
private MulticastConfiguration	multicastConfiguration
private MulticastSocket	multicastSocket
private ProtocolContext<ProtocolMessage>	protocolContext
private Set<DiscoverableService>	services

Constructor Summary

Constructors

Constructor and Description
ClusterServicesBroadcaster(InetSocketAddress multicastAddress, MulticastConfiguration multicastConfiguration, ProtocolContext<ProtocolMessage> protocolContext, String broadcastDelay)

Method Summary

Methods

Modifier and Type	Method and Description
boolean	addService(DiscoverableService service)
int	getBroadcastDelayMs()
InetSocketAddress	getMulticastAddress()
Set<DiscoverableService>	getServices()
boolean	isRunning()
boolean	removeService(String serviceName)
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

services

private final Set<DiscoverableService> services

multicastAddress

private final InetSocketAddress multicastAddress

multicastConfiguration

private final MulticastConfiguration multicastConfiguration

protocolContext

private final ProtocolContext<ProtocolMessage> protocolContext

broadcastDelayMs

private final int broadcastDelayMs

broadcaster

private Timer broadcaster

multicastSocket

private MulticastSocket multicastSocket

Constructor Detail

ClusterServicesBroadcaster

public ClusterServicesBroadcaster(InetSocketAddress multicastAddress,
                          MulticastConfiguration multicastConfiguration,
                          ProtocolContext<ProtocolMessage> protocolContext,
                          String broadcastDelay)

Method Detail

start

public void start()
           throws IOException

Throws:

IOException

isRunning

public boolean isRunning()

stop

public void stop()

getBroadcastDelayMs

public int getBroadcastDelayMs()

Specified by:

getBroadcastDelayMs in interface ServicesBroadcaster

getServices

public Set<DiscoverableService> getServices()

Specified by:

getServices in interface ServicesBroadcaster

getMulticastAddress

public InetSocketAddress getMulticastAddress()

Specified by:

getMulticastAddress in interface MulticastServicesBroadcaster

addService

public boolean addService(DiscoverableService service)

Specified by:

addService in interface ServicesBroadcaster

removeService

public boolean removeService(String serviceName)

Specified by:

removeService in interface ServicesBroadcaster