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 static org.slf4j.Logger	logger
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
ClusterWorkloadResponseMessage	clusterWorkload(ClusterWorkloadRequestMessage msg) Sends a "cluster workflow request" message to the Cluster Coordinator.
private Socket	createSocket(InetSocketAddress socketAddress)
protected abstract InetSocketAddress	getServiceAddress()
SocketConfiguration	getSocketConfiguration()
HeartbeatResponseMessage	heartbeat(HeartbeatMessage msg, String address) Sends a heartbeat to the address given
ConnectionResponseMessage	requestConnection(ConnectionRequestMessage msg, boolean allowConnectToSelf) Sends a "connection request" message to the cluster manager.
private ProtocolMessage	sendProtocolMessage(ProtocolMessage msg, String hostname, int port)
private void	validateNotConnectingToSelf(ConnectionRequestMessage msg, InetSocketAddress socketAddress)

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

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,
                                                   boolean allowConnectToSelf)
                                            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

allowConnectToSelf - whether or not the node should be allowed to connect to the cluster if the Cluster Coordinator is this node

Returns:

the response

Throws:

ProtocolException - if communication failed

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

validateNotConnectingToSelf

private void validateNotConnectingToSelf(ConnectionRequestMessage msg,
                                         InetSocketAddress socketAddress)

heartbeat

public HeartbeatResponseMessage 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

Returns:

the response from the Cluster Coordinator

Throws:

ProtocolException - if unable to send the heartbeat

clusterWorkload

public ClusterWorkloadResponseMessage clusterWorkload(ClusterWorkloadRequestMessage msg)
                                               throws ProtocolException

Description copied from interface: NodeProtocolSender

Sends a "cluster workflow request" message to the Cluster Coordinator.

Specified by:

clusterWorkload in interface NodeProtocolSender

Parameters:

msg - a request message

Returns:

the response from the Cluster Coordinator

Throws:

ProtocolException - if communication failed

createSocket

private Socket createSocket(InetSocketAddress socketAddress)

getSocketConfiguration

public SocketConfiguration getSocketConfiguration()

sendProtocolMessage

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

getServiceAddress

protected abstract InetSocketAddress getServiceAddress()
                                                throws IOException

Throws:

IOException