org.apache.nifi.cluster.protocol.impl

Class ClusterManagerProtocolSenderImpl

java.lang.Object

org.apache.nifi.cluster.protocol.impl.ClusterManagerProtocolSenderImpl

All Implemented Interfaces:

ClusterManagerProtocolSender

public class ClusterManagerProtocolSenderImpl
extends Object
implements ClusterManagerProtocolSender

A protocol sender for sending protocol messages from the cluster manager to nodes. Connection-type requests (e.g., reconnection, disconnection) by nature of starting/stopping flow controllers take longer than other types of protocol messages. Therefore, a handshake timeout may be specified to lengthen the allowable time for communication with the node.

Author:

unattributed

Field Summary

Fields

Modifier and Type	Field and Description
private BulletinRepository	bulletinRepository
private int	handshakeTimeoutSeconds
private ProtocolContext<ProtocolMessage>	protocolContext
private SocketConfiguration	socketConfiguration

Constructor Summary

Constructors

Constructor and Description
ClusterManagerProtocolSenderImpl(SocketConfiguration socketConfiguration, ProtocolContext<ProtocolMessage> protocolContext)

Method Summary

Methods

Modifier and Type	Method and Description
void	assignPrimaryRole(PrimaryRoleAssignmentMessage msg) Assigns the primary role to a node.
private Socket	createSocket(NodeIdentifier nodeId, boolean applyHandshakeTimeout)
private Socket	createSocket(String host, int port, boolean applyHandshakeTimeout)
void	disconnect(DisconnectMessage msg) Requests a node to disconnect from the cluster.
int	getHandshakeTimeoutSeconds()
SocketConfiguration	getSocketConfiguration()
FlowResponseMessage	requestFlow(FlowRequestMessage msg) Requests the data flow from a node.
ReconnectionResponseMessage	requestReconnection(ReconnectionRequestMessage msg) Requests a node to reconnect to the cluster.
void	setBulletinRepository(BulletinRepository bulletinRepository) Sets the BulletinRepository that can be used to report bulletins
private void	setConnectionHandshakeTimeoutOnSocket(Socket socket)
void	setHandshakeTimeout(String handshakeTimeout)

Methods inherited from class java.lang.Object

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

Field Detail

protocolContext

private final ProtocolContext<ProtocolMessage> protocolContext

socketConfiguration

private final SocketConfiguration socketConfiguration

handshakeTimeoutSeconds

private int handshakeTimeoutSeconds

bulletinRepository

private volatile BulletinRepository bulletinRepository

Constructor Detail

ClusterManagerProtocolSenderImpl

public ClusterManagerProtocolSenderImpl(SocketConfiguration socketConfiguration,
                                ProtocolContext<ProtocolMessage> protocolContext)

Method Detail

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

requestFlow

public FlowResponseMessage requestFlow(FlowRequestMessage msg)
                                throws ProtocolException

Requests the data flow from a node.

Specified by:

requestFlow in interface ClusterManagerProtocolSender

Parameters:

msg - a message

Returns:

the message response

Throws:

@throws - ProtocolException if the message failed to be sent or the response was malformed

ProtocolException - if communication failed

requestReconnection

public ReconnectionResponseMessage requestReconnection(ReconnectionRequestMessage msg)
                                                throws ProtocolException

Requests a node to reconnect to the cluster. The configured value for handshake timeout is applied to the socket before making the request.

Specified by:

requestReconnection in interface ClusterManagerProtocolSender

Parameters:

msg - a message

Returns:

the response

Throws:

ProtocolException - if the message failed to be sent or the response was malformed

disconnect

public void disconnect(DisconnectMessage msg)
                throws ProtocolException

Requests a node to disconnect from the cluster. The configured value for handshake timeout is applied to the socket before making the request.

Specified by:

disconnect in interface ClusterManagerProtocolSender

Parameters:

msg - a message

Throws:

ProtocolException - if the message failed to be sent

assignPrimaryRole

public void assignPrimaryRole(PrimaryRoleAssignmentMessage msg)
                       throws ProtocolException

Assigns the primary role to a node.

Specified by:

assignPrimaryRole in interface ClusterManagerProtocolSender

Parameters:

msg - a message

Throws:

ProtocolException - if the message failed to be sent

setConnectionHandshakeTimeoutOnSocket

private void setConnectionHandshakeTimeoutOnSocket(Socket socket)
                                            throws SocketException

Throws:

SocketException

getSocketConfiguration

public SocketConfiguration getSocketConfiguration()

getHandshakeTimeoutSeconds

public int getHandshakeTimeoutSeconds()

setHandshakeTimeout

public void setHandshakeTimeout(String handshakeTimeout)

createSocket

private Socket createSocket(NodeIdentifier nodeId,
                  boolean applyHandshakeTimeout)

createSocket

private Socket createSocket(String host,
                  int port,
                  boolean applyHandshakeTimeout)