org.apache.nifi.cluster.protocol

Class AbstractNodeProtocolSender

java.lang.Object

org.apache.nifi.cluster.protocol.AbstractNodeProtocolSender

All Implemented Interfaces:

NodeProtocolSender

public abstract class AbstractNodeProtocolSender
extends Object
implements NodeProtocolSender

Field Summary

Fields

Modifier and Type	Field and Description
private ProtocolContext<ProtocolMessage>	protocolContext
private SocketConfiguration	socketConfiguration

Constructor Summary

Constructors

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

Method Summary

Modifier and Type	Method and Description
private Socket	createSocket()
protected abstract InetSocketAddress	getServiceAddress()
SocketConfiguration	getSocketConfiguration()
void	heartbeat(HeartbeatMessage msg, String address) Sends a heartbeat to the address given
ConnectionResponseMessage	requestConnection(ConnectionRequestMessage msg) Sends a "connection request" message to the cluster manager.
private void	sendProtocolMessage(ProtocolMessage msg, String hostname, int port)

Methods inherited from class java.lang.Object

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

Field Detail

socketConfiguration

private final SocketConfiguration socketConfiguration

protocolContext

private final ProtocolContext<ProtocolMessage> protocolContext

Constructor Detail

AbstractNodeProtocolSender

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

Method Detail

requestConnection

public ConnectionResponseMessage requestConnection(ConnectionRequestMessage msg)
                                            throws ProtocolException,
                                                   UnknownServiceAddressException

Description copied from interface: NodeProtocolSender

Sends a "connection request" message to the cluster manager.

Specified by:

requestConnection in interface NodeProtocolSender

Parameters:

msg - a message

Returns:

the response

Throws:

ProtocolException - if communication failed

UnknownServiceAddressException - if the cluster manager's address is not known

heartbeat

public void heartbeat(HeartbeatMessage msg,
                      String address)
               throws ProtocolException

Description copied from interface: NodeProtocolSender

Sends a heartbeat to the address given

Specified by:

heartbeat in interface NodeProtocolSender

Parameters:

msg - the heartbeat message to send

address - the address of the Cluster Coordinator in <hostname>:<port> format

Throws:

ProtocolException - if unable to send the heartbeat

createSocket

private Socket createSocket()

getSocketConfiguration

public SocketConfiguration getSocketConfiguration()

sendProtocolMessage

private void sendProtocolMessage(ProtocolMessage msg,
                                 String hostname,
                                 int port)

getServiceAddress

protected abstract InetSocketAddress getServiceAddress()
                                                throws IOException

Throws:

IOException