net.greghaines.jesque.worker

Class WorkerExitOnEmpty

java.lang.Object

net.greghaines.jesque.worker.WorkerImpl

net.greghaines.jesque.worker.WorkerExitOnEmpty

All Implemented Interfaces:

Runnable, JobExecutor, Worker, WorkerEventEmitter

public class WorkerExitOnEmpty
extends WorkerImpl

An implementation of Worker that exits if all queues are empty maxLoopOnEmptyQueues times.

This is useful if you have more queues that you want active workers for at one time, and you don't want workers working multiple queues.

Essentially once a worker starts a queue you want that queue worked to exhaustion, then you want that worker to die, and to start up another worker on a new queue.

Author:

Timothy Hruska

Nested Class Summary

Nested classes/interfaces inherited from interface net.greghaines.jesque.worker.JobExecutor

JobExecutor.State

Field Summary

Fields

Modifier and Type	Field and Description
static int	DEFAULT_MAX_LOOPS_ON_EMPTY_QUEUES

Fields inherited from class net.greghaines.jesque.worker.WorkerImpl

config, emptyQueueSleepTime, jedis, listenerDelegate, namespace, queueNames, reconnectAttempts, reconnectSleepTime, state

Fields inherited from interface net.greghaines.jesque.worker.Worker

ALL_QUEUES

Constructor Summary

Constructors

Constructor and Description
WorkerExitOnEmpty(Config config, Collection<String> queues, Map<String,? extends Class<?>> jobTypes)
WorkerExitOnEmpty(Config config, Collection<String> queues, Map<String,? extends Class<?>> jobTypes, int maxLoopsOnEmptyQueues)

Method Summary

Methods

Modifier and Type	Method and Description
protected void	poll() Polls the queues for jobs and executes them. Exits if all queues are empty maxLoopOnEmptyQueues times

Methods inherited from class net.greghaines.jesque.worker.WorkerImpl

addJobType, addListener, addListener, addQueue, checkJobType, checkJobTypes, checkPaused, checkQueues, createName, end, execute, failMsg, failure, getExceptionHandler, getJobTypes, getName, getQueues, getReconnectAttempts, getWorkerId, isPaused, isProcessingJob, isShutdown, isThreadNameChangingEnabled, join, key, pauseMsg, process, recoverFromException, removeAllListeners, removeAllListeners, removeAllQueues, removeJobName, removeJobType, removeListener, removeListener, removeQueue, renameThread, run, setExceptionHandler, setJobTypes, setQueues, setThreadNameChangingEnabled, statusMsg, success, togglePause, toString

Methods inherited from class java.lang.Object

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

Field Detail

DEFAULT_MAX_LOOPS_ON_EMPTY_QUEUES

public static final int DEFAULT_MAX_LOOPS_ON_EMPTY_QUEUES

See Also:

Constant Field Values

Constructor Detail

WorkerExitOnEmpty

public WorkerExitOnEmpty(Config config,
                 Collection<String> queues,
                 Map<String,? extends Class<?>> jobTypes)

WorkerExitOnEmpty

public WorkerExitOnEmpty(Config config,
                 Collection<String> queues,
                 Map<String,? extends Class<?>> jobTypes,
                 int maxLoopsOnEmptyQueues)

Method Detail

poll

protected void poll()

Polls the queues for jobs and executes them.
Exits if all queues are empty maxLoopOnEmptyQueues times

Overrides:

poll in class WorkerImpl

See Also:

WorkerImpl.poll()