org.apache.nifi.cluster.protocol.impl

Class ClusterManagerProtocolSenderListener

java.lang.Object

org.apache.nifi.cluster.protocol.impl.ClusterManagerProtocolSenderListener

All Implemented Interfaces:

ClusterManagerProtocolSender, ProtocolListener

public class ClusterManagerProtocolSenderListener
extends Object
implements ClusterManagerProtocolSender, ProtocolListener

A wrapper class for consolidating a protocol sender and listener for the cluster manager.

Field Summary

Fields

Modifier and Type	Field and Description
private ProtocolListener	listener
private ClusterManagerProtocolSender	sender

Constructor Summary

Constructors

Constructor and Description
ClusterManagerProtocolSenderListener(ClusterManagerProtocolSender sender, ProtocolListener listener)

Method Summary

Methods

Modifier and Type	Method and Description
void	addHandler(ProtocolHandler handler) Registers a handler with the listener.
void	assignPrimaryRole(PrimaryRoleAssignmentMessage msg) Sends an "assign primary role" message to a node.
void	disconnect(DisconnectMessage msg) Sends a "disconnection request" message to a node.
Collection<ProtocolHandler>	getHandlers()
boolean	isRunning()
boolean	removeHandler(ProtocolHandler handler) Unregisters the handler with the listener.
FlowResponseMessage	requestFlow(FlowRequestMessage msg) Sends a "flow request" message to a node.
ReconnectionResponseMessage	requestReconnection(ReconnectionRequestMessage msg) Sends a "reconnection request" message to a node.
void	setBulletinRepository(BulletinRepository bulletinRepository) Sets the BulletinRepository that can be used to report bulletins
void	start() Starts the instance for listening for messages.
void	stop() Stops the instance from listening for messages.

Methods inherited from class java.lang.Object

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

Field Detail

sender

private final ClusterManagerProtocolSender sender

listener

private final ProtocolListener listener

Constructor Detail

ClusterManagerProtocolSenderListener

public ClusterManagerProtocolSenderListener(ClusterManagerProtocolSender sender,
                                    ProtocolListener listener)

Method Detail

stop

public void stop()
          throws IOException

Description copied from interface: ProtocolListener

Stops the instance from listening for messages. Stop may only be called if the instance is running.

Specified by:

stop in interface ProtocolListener

Throws:

IOException - ex

start

public void start()
           throws IOException

Description copied from interface: ProtocolListener

Starts the instance for listening for messages. Start may only be called if the instance is not running.

Specified by:

start in interface ProtocolListener

Throws:

IOException - ex

isRunning

public boolean isRunning()

Specified by:

isRunning in interface ProtocolListener

Returns:

true if the instance is started; false otherwise.

removeHandler

public boolean removeHandler(ProtocolHandler handler)

Description copied from interface: ProtocolListener

Unregisters the handler with the listener.

Specified by:

removeHandler in interface ProtocolListener

Parameters:

handler - a handler

Returns:

true if the handler was removed; false otherwise

getHandlers

public Collection<ProtocolHandler> getHandlers()

Specified by:

getHandlers in interface ProtocolListener

Returns:

the handlers registered with the listener

addHandler

public void addHandler(ProtocolHandler handler)

Description copied from interface: ProtocolListener

Registers a handler with the listener.

Specified by:

addHandler in interface ProtocolListener

Parameters:

handler - a handler

setBulletinRepository

public void setBulletinRepository(BulletinRepository bulletinRepository)

Description copied from interface: ClusterManagerProtocolSender

Sets the BulletinRepository that can be used to report bulletins

Specified by:

setBulletinRepository in interface ClusterManagerProtocolSender

Specified by:

setBulletinRepository in interface ProtocolListener

Parameters:

bulletinRepository - repo

requestFlow

public FlowResponseMessage requestFlow(FlowRequestMessage msg)
                                throws ProtocolException

Description copied from interface: ClusterManagerProtocolSender

Sends a "flow request" message to a node.

Specified by:

requestFlow in interface ClusterManagerProtocolSender

Parameters:

msg - a message

Returns:

the response

Throws:

ProtocolException - if communication failed

requestReconnection

public ReconnectionResponseMessage requestReconnection(ReconnectionRequestMessage msg)
                                                throws ProtocolException

Description copied from interface: ClusterManagerProtocolSender

Sends a "reconnection request" message to a node.

Specified by:

requestReconnection in interface ClusterManagerProtocolSender

Parameters:

msg - a message

Returns:

the response

Throws:

ProtocolException - if communication failed

disconnect

public void disconnect(DisconnectMessage msg)
                throws ProtocolException

Description copied from interface: ClusterManagerProtocolSender

Sends a "disconnection request" message to a node.

Specified by:

disconnect in interface ClusterManagerProtocolSender

Parameters:

msg - a message

Throws:

ProtocolException - if communication failed

assignPrimaryRole

public void assignPrimaryRole(PrimaryRoleAssignmentMessage msg)
                       throws ProtocolException

Description copied from interface: ClusterManagerProtocolSender

Sends an "assign primary role" message to a node.

Specified by:

assignPrimaryRole in interface ClusterManagerProtocolSender

Parameters:

msg - a message

Throws:

ProtocolException - if communication failed