com.mware.core.model.workQueue

Class RabbitMQWorkQueueSpout

java.lang.Object

com.mware.core.ingest.WorkerSpout

com.mware.core.model.workQueue.RabbitMQWorkQueueSpout

public class RabbitMQWorkQueueSpout
extends WorkerSpout

Field Summary

Fields

Modifier and Type	Field and Description
static int	DEFAULT_RABBITMQ_PREFETCH_COUNT

Constructor Summary

Constructors

Constructor and Description
RabbitMQWorkQueueSpout(String queueName)

Method Summary

Modifier and Type	Method and Description
void	ack(WorkerTuple workerTuple)
void	close()
void	fail(WorkerTuple workerTuple)
protected com.rabbitmq.client.QueueingConsumer	getConsumer()
WorkerTuple	nextTuple() Get the next tuple from the queue.
void	open()
void	setConfiguration(Configuration configuration)

Methods inherited from class com.mware.core.ingest.WorkerSpout

ack, fail

Methods inherited from class java.lang.Object

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

Field Detail

DEFAULT_RABBITMQ_PREFETCH_COUNT

public static final int DEFAULT_RABBITMQ_PREFETCH_COUNT

See Also:

Constant Field Values

Constructor Detail

RabbitMQWorkQueueSpout

public RabbitMQWorkQueueSpout(String queueName)

Method Detail

open

public void open()

Overrides:

open in class WorkerSpout

close

public void close()

Overrides:

close in class WorkerSpout

nextTuple

public WorkerTuple nextTuple()
                      throws InterruptedException

Description copied from class: WorkerSpout

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.

Specified by:

nextTuple in class WorkerSpout

Returns:

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

Throws:

InterruptedException

ack

public void ack(WorkerTuple workerTuple)

Overrides:

ack in class WorkerSpout

fail

public void fail(WorkerTuple workerTuple)

Overrides:

fail in class WorkerSpout

getConsumer

protected com.rabbitmq.client.QueueingConsumer getConsumer()

setConfiguration

@Inject
public void setConfiguration(Configuration configuration)