Package org.apache.nifi.cluster.protocol

Class AbstractNodeProtocolSender

java.lang.Object

org.apache.nifi.cluster.protocol.AbstractNodeProtocolSender

All Implemented Interfaces:

NodeProtocolSender

Direct Known Subclasses:

LeaderElectionNodeProtocolSender

public abstract class AbstractNodeProtocolSender
extends Object
implements NodeProtocolSender

Field Summary

Fields

Modifier and Type	Field	Description
private static final org.slf4j.Logger	logger
private final ProtocolMessageMarshaller<ProtocolMessage>	marshaller
private final ProtocolContext<ProtocolMessage>	protocolContext
private final SocketConfiguration	socketConfiguration
private final ProtocolMessageUnmarshaller<ProtocolMessage>	unmarshaller

Constructor Summary

Constructors

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

Method Summary

Modifier and Type	Method	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
NodeStatusesResponseMessage	nodeStatuses(NodeStatusesRequestMessage msg)	Sends a "node statuses" request message to the Cluster Coordinator.
ConnectionResponseMessage	requestConnection(ConnectionRequestMessage msg, boolean allowConnectToSelf)	Sends a "connection request" message to the cluster manager.
private ProtocolMessage	sendProtocolMessage(ProtocolMessage msg, String hostname, int port, CommsTimingDetails timingDetails)
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 Details

logger

private static final org.slf4j.Logger logger

socketConfiguration

private final SocketConfiguration socketConfiguration

protocolContext

private final ProtocolContext<ProtocolMessage> protocolContext

marshaller

private final ProtocolMessageMarshaller<ProtocolMessage> marshaller

unmarshaller

private final ProtocolMessageUnmarshaller<ProtocolMessage> unmarshaller

Constructor Details

AbstractNodeProtocolSender

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

Method Details

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

nodeStatuses

public NodeStatusesResponseMessage nodeStatuses(NodeStatusesRequestMessage msg)
                                         throws ProtocolException

Description copied from interface: NodeProtocolSender

Sends a "node statuses" request message to the Cluster Coordinator.

Specified by:

nodeStatuses in interface NodeProtocolSender

Parameters:

msg - a request message

Returns:

the response from the Cluster Coordinator containing the statuses of all nodes in the cluster

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,
 CommsTimingDetails timingDetails)

getServiceAddress

protected abstract InetSocketAddress getServiceAddress()
                                                throws IOException

Throws:

IOException