org.apache.nifi.processor.util.listen.dispatcher

Class DatagramChannelDispatcher<E extends Event<DatagramChannel>>

java.lang.Object

org.apache.nifi.processor.util.listen.dispatcher.DatagramChannelDispatcher<E>

All Implemented Interfaces:

Runnable, ChannelDispatcher

public class DatagramChannelDispatcher<E extends Event<DatagramChannel>>
extends Object
implements ChannelDispatcher

Reads from the Datagram channel into an available buffer. If data is read then the buffer is queued for processing, otherwise the buffer is returned to the buffer pool.

Field Summary

Fields

Modifier and Type	Field and Description
private BlockingQueue<ByteBuffer>	bufferPool
private DatagramChannel	datagramChannel
private EventFactory<E>	eventFactory
private EventQueue<E>	events
private ComponentLog	logger
private Selector	selector
private String	sendingHost
private Integer	sendingPort
private boolean	stopped

Constructor Summary

Constructors

Constructor and Description
DatagramChannelDispatcher(EventFactory<E> eventFactory, BlockingQueue<ByteBuffer> bufferPool, BlockingQueue<E> events, ComponentLog logger)
DatagramChannelDispatcher(EventFactory<E> eventFactory, BlockingQueue<ByteBuffer> bufferPool, BlockingQueue<E> events, ComponentLog logger, String sendingHost, Integer sendingPort)

Method Summary

Modifier and Type	Method and Description
void	close() Closes all listeners and stops all handler threads.
int	getPort()
void	open(InetAddress nicAddress, int port, int maxBufferSize) Opens the dispatcher listening on the given port and attempts to set the OS socket buffer to maxBufferSize.
void	run()

Methods inherited from class java.lang.Object

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

Field Detail

eventFactory

private final EventFactory<E extends Event<DatagramChannel>> eventFactory

bufferPool

private final BlockingQueue<ByteBuffer> bufferPool

events

private final EventQueue<E extends Event<DatagramChannel>> events

logger

private final ComponentLog logger

sendingHost

private final String sendingHost

sendingPort

private final Integer sendingPort

selector

private Selector selector

datagramChannel

private DatagramChannel datagramChannel

stopped

private volatile boolean stopped

Constructor Detail

DatagramChannelDispatcher

public DatagramChannelDispatcher(EventFactory<E> eventFactory,
                                 BlockingQueue<ByteBuffer> bufferPool,
                                 BlockingQueue<E> events,
                                 ComponentLog logger)

DatagramChannelDispatcher

public DatagramChannelDispatcher(EventFactory<E> eventFactory,
                                 BlockingQueue<ByteBuffer> bufferPool,
                                 BlockingQueue<E> events,
                                 ComponentLog logger,
                                 String sendingHost,
                                 Integer sendingPort)

Method Detail

open

public void open(InetAddress nicAddress,
                 int port,
                 int maxBufferSize)
          throws IOException

Description copied from interface: ChannelDispatcher

Opens the dispatcher listening on the given port and attempts to set the OS socket buffer to maxBufferSize.

Specified by:

open in interface ChannelDispatcher

Parameters:

nicAddress - the local network interface to listen on, if null will listen on the wildcard address which means listening on all local network interfaces

port - the port to listen on

maxBufferSize - the size to set the OS socket buffer to

Throws:

IOException - if an error occurred listening on the given port

run

public void run()

Specified by:

run in interface Runnable

getPort

public int getPort()

Specified by:

getPort in interface ChannelDispatcher

Returns:

the port being listened to

close

public void close()

Description copied from interface: ChannelDispatcher

Closes all listeners and stops all handler threads.

Specified by:

close in interface ChannelDispatcher