org.apache.nifi.remote

Class SocketRemoteSiteListener

java.lang.Object

org.apache.nifi.remote.SocketRemoteSiteListener

All Implemented Interfaces:

RemoteSiteListener

public class SocketRemoteSiteListener
extends Object
implements RemoteSiteListener

Field Summary

Fields

Modifier and Type	Field and Description
private static int	EXCEPTION_THRESHOLD_MILLIS
private static org.slf4j.Logger	LOG
private NiFiProperties	nifiProperties
private NodeInformant	nodeInformant
private PeerDescriptionModifier	peerDescriptionModifier
private AtomicReference<ProcessGroup>	rootGroup
private int	socketPort
private SSLContext	sslContext
private AtomicBoolean	stopped
private long	tlsErrorLastSeen

Constructor Summary

Constructors

Constructor and Description
SocketRemoteSiteListener(int socketPort, SSLContext sslContext, NiFiProperties nifiProperties)
SocketRemoteSiteListener(int socketPort, SSLContext sslContext, NiFiProperties nifiProperties, NodeInformant nodeInformant)

Method Summary

Modifier and Type	Method and Description
private Socket	acceptConnection(ServerSocket serverSocket)
private ServerSocket	createServerSocket()
void	destroy()
private String	getPeerIdentity(SSLSocket sslSocket)
private int	getPort()
private void	handleRequest(ServerProtocol protocol, Peer peer, RequestType requestType)
private boolean	handleTlsError(String msg)
private boolean	isTlsError(Throwable e)
void	setRootGroup(ProcessGroup rootGroup)
void	start()
void	stop()
private boolean	tlsErrorRecentlySeen() Returns true if any related exception has occurred within the last EXCEPTION_THRESHOLD_MILLIS milliseconds.
private void	verifyMagicBytes(InputStream in, String peerDescription)

Methods inherited from class java.lang.Object

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

Field Detail

socketPort

private final int socketPort

sslContext

private final SSLContext sslContext

nodeInformant

private final NodeInformant nodeInformant

rootGroup

private final AtomicReference<ProcessGroup> rootGroup

nifiProperties

private final NiFiProperties nifiProperties

peerDescriptionModifier

private final PeerDescriptionModifier peerDescriptionModifier

EXCEPTION_THRESHOLD_MILLIS

private static final int EXCEPTION_THRESHOLD_MILLIS

See Also:

Constant Field Values

tlsErrorLastSeen

private volatile long tlsErrorLastSeen

stopped

private final AtomicBoolean stopped

LOG

private static final org.slf4j.Logger LOG

Constructor Detail

SocketRemoteSiteListener

public SocketRemoteSiteListener(int socketPort,
                                SSLContext sslContext,
                                NiFiProperties nifiProperties)

SocketRemoteSiteListener

public SocketRemoteSiteListener(int socketPort,
                                SSLContext sslContext,
                                NiFiProperties nifiProperties,
                                NodeInformant nodeInformant)

Method Detail

setRootGroup

public void setRootGroup(ProcessGroup rootGroup)

Specified by:

setRootGroup in interface RemoteSiteListener

start

public void start()
           throws IOException

Specified by:

start in interface RemoteSiteListener

Throws:

IOException

isTlsError

private boolean isTlsError(Throwable e)

getPeerIdentity

private String getPeerIdentity(SSLSocket sslSocket)
                        throws SSLPeerUnverifiedException

Throws:

SSLPeerUnverifiedException

handleTlsError

private boolean handleTlsError(String msg)

tlsErrorRecentlySeen

private boolean tlsErrorRecentlySeen()

Returns true if any related exception has occurred within the last EXCEPTION_THRESHOLD_MILLIS milliseconds. Does not evaluate the error locally, simply checks the last time the timestamp was updated.

Returns:

true if the time since the last similar exception occurred is below the threshold

createServerSocket

private ServerSocket createServerSocket()
                                 throws IOException

Throws:

IOException

acceptConnection

private Socket acceptConnection(ServerSocket serverSocket)

handleRequest

private void handleRequest(ServerProtocol protocol,
                           Peer peer,
                           RequestType requestType)
                    throws IOException,
                           NotAuthorizedException,
                           BadRequestException,
                           RequestExpiredException

Throws:

IOException

NotAuthorizedException

BadRequestException

RequestExpiredException

getPort

private int getPort()

stop

public void stop()

Specified by:

stop in interface RemoteSiteListener

destroy

public void destroy()

Specified by:

destroy in interface RemoteSiteListener

verifyMagicBytes

private void verifyMagicBytes(InputStream in,
                              String peerDescription)
                       throws IOException

Throws:

IOException