com.mware.core.ingest

Class WorkerSpout

java.lang.Object

com.mware.core.ingest.WorkerSpout

Direct Known Subclasses:

RabbitMQWorkQueueSpout

public abstract class WorkerSpout
extends Object

Constructor Summary

Constructors

Constructor and Description
WorkerSpout()

Method Summary

Modifier and Type	Method and Description
void	ack(Object msgId) Deprecated. replaced by ack(WorkerTuple) ()}
void	ack(WorkerTuple workerTuple)
void	close()
void	fail(Object msgId) Deprecated. replaced by fail(WorkerTuple) ()}
void	fail(WorkerTuple workerTuple)
abstract WorkerTuple	nextTuple() Get the next tuple from the queue.
void	open()

Methods inherited from class java.lang.Object

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

Constructor Detail

WorkerSpout

public WorkerSpout()

Method Detail

open

public void open()

close

public void close()

ack

public void ack(WorkerTuple workerTuple)

ack

@Deprecated
public void ack(Object msgId)

Deprecated. replaced by ack(WorkerTuple) ()}

fail

public void fail(WorkerTuple workerTuple)

fail

@Deprecated
public void fail(Object msgId)

Deprecated. replaced by fail(WorkerTuple) ()}

nextTuple

public abstract WorkerTuple nextTuple()
                               throws Exception

Get the next tuple from the queue. This method should poll and wait for a time period to prevent spinning and causing high cpu load as the method calling this method will not sleep if a null is returned. This method should also not wait indefinitely because the calling method needs to perform periodic work.

Returns:

null, if no tuple is available in the polling period.

Throws:

Exception