Class to handle enqueueing and running of background jobs. More...

Inherited by JobQueueDB, JobQueueFederated, JobQueueMemory, and JobQueueRedis.

Collaboration diagram for JobQueue:

[legend]

Public Member Functions
	ack (RunnableJob $job)
	Acknowledge that a job was completed.

	batchPush (array $jobs, $flags=0)
	Push a batch of jobs into the queue.

	deduplicateRootJob (IJobSpecification $job)
	Register the "root job" of a given job into the queue for de-duplication.

	delayedJobsEnabled ()

	delete ()
	Delete all unclaimed and delayed jobs from the queue.

	flushCaches ()
	Clear any process and persistent caches.

	getAbandonedCount ()
	Get the number of acquired jobs that can no longer be attempted.

	getAcquiredCount ()
	Get the number of acquired jobs (these are temporarily out of the queue).

	getAllAbandonedJobs ()
	Get an iterator to traverse over all abandoned jobs in this queue.

	getAllAcquiredJobs ()
	Get an iterator to traverse over all claimed jobs in this queue.

	getAllDelayedJobs ()
	Get an iterator to traverse over all delayed jobs in this queue.

	getAllQueuedJobs ()
	Get an iterator to traverse over all available jobs in this queue.

	getCoalesceLocationInternal ()
	Do not use this function outside of JobQueue/JobQueueGroup.

	getDelayedCount ()
	Get the number of delayed jobs (these are temporarily out of the queue).

	getDomain ()

	getOrder ()

	getReadOnlyReason ()

	getSiblingQueueSizes (array $types)
	Check the size of each of the given queues.

	getSiblingQueuesWithJobs (array $types)
	Check whether each of the given queues are empty.

	getSize ()
	Get the number of available (unacquired, non-delayed) jobs in the queue.

	getType ()

	getWiki ()

	isEmpty ()
	Quickly check if the queue has no available (unacquired, non-delayed) jobs.

	pop ()
	Pop a job off of the queue.

	push ( $jobs, $flags=0)
	Push one or more jobs into the queue.

	waitForBackups ()
	Wait for any replica DBs or backup servers to catch up.

Static Public Member Functions
static	factory (array $params)
	Get a job queue object of the specified type.

Protected Member Functions
	__construct (array $params)

	assertNotReadOnly ()

	doAck (RunnableJob $job)

	doBatchPush (array $jobs, $flags)

	doDeduplicateRootJob (IJobSpecification $job)

	doDelete ()

	doFlushCaches ()

	doGetAbandonedCount ()

	doGetAcquiredCount ()

	doGetDelayedCount ()

	doGetSiblingQueueSizes (array $types)

	doGetSiblingQueuesWithJobs (array $types)

	doGetSize ()

	doIsEmpty ()

	doIsRootJobOldDuplicate (IJobSpecification $job)

	doPop ()

	doWaitForBackups ()

	factoryJob ( $command, $params)

	getRootJobCacheKey ( $signature, $type)

	incrStats ( $key, $type, $delta=1)
	Call StatsdDataFactoryInterface::updateCount() for the queue overall and for the queue type.

	isRootJobOldDuplicate (IJobSpecification $job)
	Check if the "root" job of a given job has been superseded by a newer one.

	optimalOrder ()
	Get the default queue order to use if configuration does not specify one.

	supportedOrders ()
	Get the allowed queue orders for configuration validation.

	supportsDelayedJobs ()
	Find out if delayed jobs are supported for configuration validation.

	supportsTypeAgnostic ()
	Subclasses should set this to true if they support type agnostic queues.

Protected Attributes
int	$claimTTL
	Time to live in seconds.

string	$domain
	DB domain ID.

GlobalIdGenerator	$idGenerator

int	$maxTries
	Maximum number of times to try a job.

string	$order
	Job priority for pop()

string false	$readOnlyReason
	Read only rationale (or false if r/w)

StatsdDataFactoryInterface	$stats

string	$type
	Job type.

bool	$typeAgnostic

WANObjectCache	$wanCache

const	QOS_ATOMIC = 1

const	ROOTJOB_TTL = 2419200

Detailed Description

Class to handle enqueueing and running of background jobs.

See the architecture doc for more information.

Since: 1.21

Stability: stable: to extend

Definition at line 39 of file JobQueue.php.

Constructor & Destructor Documentation

◆ __construct()

JobQueue::__construct ( array $params )

protected

Stability: stable: to call

Parameters

array

$params

type : A job type, 'default' if typeAgnostic is set

domain : A DB domain ID
idGenerator : A GlobalIdGenerator instance.
wanCache : An instance of WANObjectCache to use for caching [default: none]
stats : An instance of StatsdDataFactoryInterface [default: none]
claimTTL : Seconds a job can be claimed for exclusive execution [default: forever]
maxTries : Total times a job can be tried, assuming claims expire [default: 3]
order : Queue order, one of ("fifo", "timestamp", "random") [default: variable]
readOnlyReason : Mark the queue as read-only with this reason [default: false]
typeAgnostic : If the jobqueue should operate agnostic to the job types
Exceptions

JobQueueError

Reimplemented in JobQueueDB, JobQueueFederated, JobQueueMemory, and JobQueueRedis.

Definition at line 86 of file JobQueue.php.

References optimalOrder(), supportedOrders(), and supportsTypeAgnostic().

Member Function Documentation

◆ ack()

JobQueue::ack ( RunnableJob $job )

final

Acknowledge that a job was completed.

This does nothing for certain queue classes or if "claimTTL" is not set. Outside callers should use JobQueueGroup::ack() instead of this function.

Parameters

RunnableJob $job

Returns: void

Exceptions

JobQueueError

Definition at line 443 of file JobQueue.php.

References $job, assertNotReadOnly(), and doAck().

◆ assertNotReadOnly()

JobQueue::assertNotReadOnly ( )

protected

Exceptions

JobQueueReadOnlyError

Definition at line 753 of file JobQueue.php.

Referenced by ack(), batchPush(), deduplicateRootJob(), delete(), and pop().

◆ batchPush()

JobQueue::batchPush	(	array	$jobs,
			$flags = 0 )

final

Push a batch of jobs into the queue.

This does not require $wgJobClasses to be set for the given job type. Outside callers should use JobQueueGroup::push() instead of this function.

Parameters

IJobSpecification[]	$jobs
int	$flags	Bitfield (supports JobQueue::QOS_ATOMIC)

Returns: void

Exceptions

JobQueueError

Definition at line 368 of file JobQueue.php.

References $job, assertNotReadOnly(), deduplicateRootJob(), and doBatchPush().

Referenced by push().

◆ deduplicateRootJob()

JobQueue::deduplicateRootJob ( IJobSpecification $job )

final

Register the "root job" of a given job into the queue for de-duplication.

This should only be called right after all the new jobs have been inserted. This is used to turn older, duplicate, job entries into no-ops. The root job information will remain in the registry until it simply falls out of cache.

This requires that $job has two special fields in the "params" array:

rootJobSignature : hash (e.g. SHA1) that identifies the task
rootJobTimestamp : TS_MW timestamp of this instance of the task

A "root job" is a conceptual job that consist of potentially many smaller jobs that are actually inserted into the queue. For example, "refreshLinks" jobs are spawned when a template is edited. One can think of the task as "update links of pages that use template X" and an instance of that task as a "root job". However, what actually goes into the queue are range and leaf job subtypes. Since these jobs include things like page ID ranges and DB primary positions, and can morph into smaller jobs recursively, simple duplicate detection for individual jobs being identical (like that of job_sha1) is not useful.

In the case of "refreshLinks", if these jobs are still in the queue when the template is edited again, we want all of these old refreshLinks jobs for that template to become no-ops. This can greatly reduce server load, since refreshLinks jobs involves parsing. Essentially, the new batch of jobs belong to a new "root job" and the older ones to a previous "root job" for the same task of "update links of pages that use template X".

This does nothing for certain queue classes.

Access: internal: For use within JobQueue only

Parameters

IJobSpecification $job

Exceptions

JobQueueError

Returns: bool

Definition at line 488 of file JobQueue.php.

References $job, assertNotReadOnly(), and doDeduplicateRootJob().

Referenced by batchPush().

◆ delayedJobsEnabled()

JobQueue::delayedJobsEnabled ( )

final

Returns: bool Whether delayed jobs are enabled

Since: 1.22

Definition at line 216 of file JobQueue.php.

References supportsDelayedJobs().

◆ delete()

JobQueue::delete ( )

final

Delete all unclaimed and delayed jobs from the queue.

Exceptions

JobQueueError

Since: 1.22

Returns: void

Definition at line 581 of file JobQueue.php.

References assertNotReadOnly(), and doDelete().

◆ doAck()

JobQueue::doAck ( RunnableJob $job )

abstractprotected

See also: JobQueue::ack()

Parameters

RunnableJob $job

Reimplemented in JobQueueDB, JobQueueFederated, JobQueueMemory, and JobQueueRedis.

Referenced by ack().

◆ doBatchPush()

JobQueue::doBatchPush	(	array	$jobs,
			$flags )

abstractprotected

See also: JobQueue::batchPush()

Parameters

IJobSpecification[]	$jobs
int	$flags

Reimplemented in JobQueueDB, JobQueueFederated, JobQueueMemory, and JobQueueRedis.

Referenced by batchPush().

◆ doDeduplicateRootJob()

JobQueue::doDeduplicateRootJob ( IJobSpecification $job )

protected

Stability: stable: to override

See also: JobQueue::deduplicateRootJob()

Parameters

IJobSpecification $job

Exceptions

JobQueueError

Returns: bool

Reimplemented in JobQueueDB, JobQueueFederated, and JobQueueRedis.

Definition at line 502 of file JobQueue.php.

References $job, and getRootJobCacheKey().

Referenced by deduplicateRootJob().

◆ doDelete()

JobQueue::doDelete ( )

protected

Stability: stable: to override

See also: JobQueue::delete()

Exceptions

JobQueueError

Reimplemented in JobQueueDB, JobQueueFederated, JobQueueMemory, and JobQueueRedis.

Definition at line 592 of file JobQueue.php.

Referenced by delete().

◆ doFlushCaches()

JobQueue::doFlushCaches ( )

protected

Stability: stable: to override

See also: JobQueue::flushCaches()

Returns: void

Reimplemented in JobQueueDB, and JobQueueFederated.

Definition at line 630 of file JobQueue.php.

Referenced by flushCaches().

◆ doGetAbandonedCount()

JobQueue::doGetAbandonedCount ( )

protected

Stability: stable: to override

See also: JobQueue::getAbandonedCount()

Returns: int

Reimplemented in JobQueueDB, JobQueueFederated, and JobQueueRedis.

Definition at line 339 of file JobQueue.php.

Referenced by getAbandonedCount().

◆ doGetAcquiredCount()

JobQueue::doGetAcquiredCount ( )

abstractprotected

See also: JobQueue::getAcquiredCount()

Returns: int

Reimplemented in JobQueueDB, JobQueueFederated, JobQueueMemory, and JobQueueRedis.

Referenced by getAcquiredCount().

◆ doGetDelayedCount()

JobQueue::doGetDelayedCount ( )

protected

Stability: stable: to override

See also: JobQueue::getDelayedCount()

Returns: int

Reimplemented in JobQueueFederated, and JobQueueRedis.

Definition at line 315 of file JobQueue.php.

Referenced by getDelayedCount().

◆ doGetSiblingQueueSizes()

JobQueue::doGetSiblingQueueSizes ( array $types )

protected

Stability: stable: to override

See also: JobQueue::getSiblingQueuesSize()

Parameters

array $types List of queues types

Returns: array|null (list of queue types) or null if unsupported

Reimplemented in JobQueueDB, JobQueueFederated, and JobQueueRedis.

Definition at line 737 of file JobQueue.php.

Referenced by getSiblingQueueSizes().

◆ doGetSiblingQueuesWithJobs()

JobQueue::doGetSiblingQueuesWithJobs ( array $types )

protected

Stability: stable: to override

See also: JobQueue::getSiblingQueuesWithJobs()

Parameters

array $types List of queues types

Returns: array|null (list of queue types) or null if unsupported

Reimplemented in JobQueueDB, JobQueueFederated, and JobQueueRedis.

Definition at line 713 of file JobQueue.php.

Referenced by getSiblingQueuesWithJobs().

◆ doGetSize()

JobQueue::doGetSize ( )

abstractprotected

See also: JobQueue::getSize()

Returns: int

Reimplemented in JobQueueDB, JobQueueFederated, JobQueueMemory, and JobQueueRedis.

Referenced by getSize().

◆ doIsEmpty()

JobQueue::doIsEmpty ( )

abstractprotected

See also: JobQueue::isEmpty()

Returns: bool

Reimplemented in JobQueueDB, JobQueueFederated, JobQueueMemory, and JobQueueRedis.

Referenced by isEmpty().

◆ doIsRootJobOldDuplicate()

JobQueue::doIsRootJobOldDuplicate ( IJobSpecification $job )

protected

Stability: stable: to override

See also: JobQueue::isRootJobOldDuplicate()

Parameters

IJobSpecification $job

Returns: bool

Reimplemented in JobQueueFederated, and JobQueueRedis.

Definition at line 541 of file JobQueue.php.

References $job, and getRootJobCacheKey().

Referenced by isRootJobOldDuplicate().

◆ doPop()

JobQueue::doPop ( )

abstractprotected

See also: JobQueue::pop()

Returns: RunnableJob|false

Reimplemented in JobQueueDB, JobQueueFederated, JobQueueMemory, and JobQueueRedis.

Referenced by pop().

◆ doWaitForBackups()

JobQueue::doWaitForBackups ( )

protected

Stability: stable: to override

See also: JobQueue::waitForBackups()

Returns: void

Reimplemented in JobQueueDB, and JobQueueFederated.

Definition at line 613 of file JobQueue.php.

Referenced by waitForBackups().

◆ factory()

static JobQueue::factory ( array $params )

staticfinal

Get a job queue object of the specified type.

$params includes:

class : What job class to use (determines job type)
domain : Database domain ID of the wiki the jobs are for (defaults to current wiki)
type : The name of the job types this queue handles
order : Order that pop() selects jobs, one of "fifo", "timestamp" or "random". If "fifo" is used, the queue will effectively be FIFO. Note that job completion will not appear to be exactly FIFO if there are multiple job runners since jobs can take different times to finish once popped. If "timestamp" is used, the queue will at least be loosely ordered by timestamp, allowing for some jobs to be popped off out of order. If "random" is used, pop() will pick jobs in random order. Note that it may only be weakly random (e.g. a lottery of the oldest X). If "any" is chosen, the queue will use whatever order is the fastest. This might be useful for improving concurrency for job acquisition.
claimTTL : If supported, the queue will recycle jobs that have been popped but not acknowledged as completed after this many seconds. Recycling of jobs simply means re-inserting them into the queue. Jobs can be attempted up to three times before being discarded.
readOnlyReason : Set this to a string to make the queue read-only. [optional]
idGenerator : A GlobalIdGenerator instance.
stats : A StatsdDataFactoryInterface. [optional]

Queue classes should throw an exception if they do not support the options given.

Parameters

array $params

Returns: JobQueue

Exceptions

JobQueueError

Definition at line 144 of file JobQueue.php.

Referenced by JobQueueFederated\__construct(), CopyJobQueue\execute(), JobQueueGroup\get(), and JobQueueGroup\getCoalescedQueues().

◆ factoryJob()

JobQueue::factoryJob	(		$command,
			$params )

protected

Parameters

string	$command
array	$params

Returns: Job

Definition at line 746 of file JobQueue.php.

Referenced by JobQueueRedis\getJobFromFields(), JobQueueRedis\getJobFromUidInternal(), JobQueueDB\jobFromRow(), and JobQueueMemory\jobFromSpecInternal().

◆ flushCaches()

JobQueue::flushCaches ( )

final

Clear any process and persistent caches.

Returns: void

Definition at line 621 of file JobQueue.php.

References doFlushCaches().

◆ getAbandonedCount()

JobQueue::getAbandonedCount ( )

final

Get the number of acquired jobs that can no longer be attempted.

Queue classes should use caching if they are any slower without memcached.

If caching is used, this number might be out of date for a minute.

Returns: int

Exceptions

JobQueueError

Definition at line 328 of file JobQueue.php.

References $res, and doGetAbandonedCount().

◆ getAcquiredCount()

JobQueue::getAcquiredCount ( )

final

Get the number of acquired jobs (these are temporarily out of the queue).

Queue classes should use caching if they are any slower without memcached.

If caching is used, this number might be out of date for a minute.

Returns: int

Exceptions

JobQueueError

Definition at line 282 of file JobQueue.php.

References $res, and doGetAcquiredCount().

Referenced by JobQueueMemory\doAck().

◆ getAllAbandonedJobs()

JobQueue::getAllAbandonedJobs ( )

Get an iterator to traverse over all abandoned jobs in this queue.

Stability: stable: to override

Returns: Iterator<RunnableJob>

Exceptions

JobQueueError

Since: 1.25

Reimplemented in JobQueueDB, JobQueueFederated, and JobQueueRedis.

Definition at line 679 of file JobQueue.php.

◆ getAllAcquiredJobs()

JobQueue::getAllAcquiredJobs ( )

Get an iterator to traverse over all claimed jobs in this queue.

Callers should be quick to iterator over it or few results will be returned due to jobs being acknowledged and deleted

Stability: stable: to override

Returns: Iterator<RunnableJob>

Exceptions

JobQueueError

Since: 1.26

Reimplemented in JobQueueDB, JobQueueFederated, JobQueueMemory, and JobQueueRedis.

Definition at line 667 of file JobQueue.php.

◆ getAllDelayedJobs()

JobQueue::getAllDelayedJobs ( )

Get an iterator to traverse over all delayed jobs in this queue.

Note: results may be stale if the queue is concurrently modified.

Stability: stable: to override

Returns: Iterator<RunnableJob>

Exceptions

JobQueueError

Since: 1.22

Reimplemented in JobQueueFederated, and JobQueueRedis.

Definition at line 652 of file JobQueue.php.

◆ getAllQueuedJobs()

JobQueue::getAllQueuedJobs ( )

abstract

Get an iterator to traverse over all available jobs in this queue.

This does not include jobs that are currently acquired or delayed. Note: results may be stale if the queue is concurrently modified.

Returns: Iterator<RunnableJob>

Exceptions

JobQueueError

Reimplemented in JobQueueDB, JobQueueFederated, JobQueueMemory, and JobQueueRedis.

◆ getCoalesceLocationInternal()

JobQueue::getCoalesceLocationInternal ( )

Do not use this function outside of JobQueue/JobQueueGroup.

Stability: stable: to override

Returns: string|null

Since: 1.22

Reimplemented in JobQueueDB, JobQueueFederated, and JobQueueRedis.

Definition at line 690 of file JobQueue.php.

◆ getDelayedCount()

JobQueue::getDelayedCount ( )

final

Get the number of delayed jobs (these are temporarily out of the queue).

Queue classes should use caching if they are any slower without memcached.

If caching is used, this number might be out of date for a minute.

Returns: int

Exceptions

JobQueueError

Since: 1.22

Definition at line 304 of file JobQueue.php.

References $res, and doGetDelayedCount().

◆ getDomain()

JobQueue::getDomain ( )

final

Returns: string Database domain ID

Definition at line 161 of file JobQueue.php.

References $domain.

◆ getOrder()

JobQueue::getOrder ( )

final

Returns: string One of (random, timestamp, fifo, undefined)

Definition at line 184 of file JobQueue.php.

References $order.

◆ getReadOnlyReason()

JobQueue::getReadOnlyReason ( )

Returns: string|false Read-only rational or false if r/w

Since: 1.27

Definition at line 224 of file JobQueue.php.

References $readOnlyReason.

◆ getRootJobCacheKey()

JobQueue::getRootJobCacheKey	(		$signature,
			$type )

protected

Parameters

string	$signature	Hash identifier of the root job
string	$type	job type

Returns: string

Definition at line 564 of file JobQueue.php.

References $type.

Referenced by doDeduplicateRootJob(), JobQueueRedis\doDeduplicateRootJob(), doIsRootJobOldDuplicate(), and JobQueueRedis\doIsRootJobOldDuplicate().

◆ getSiblingQueueSizes()

JobQueue::getSiblingQueueSizes ( array $types )

final

Check the size of each of the given queues.

For queues not served by the same store as this one, 0 is returned. This is used for batching checks for queues stored at the same place.

Parameters

array $types List of queues types

Returns: array|null (job type => whether queue is empty) or null if unsupported

Exceptions

JobQueueError

Since: 1.22

Definition at line 727 of file JobQueue.php.

References doGetSiblingQueueSizes().

◆ getSiblingQueuesWithJobs()

JobQueue::getSiblingQueuesWithJobs ( array $types )

final

Check whether each of the given queues are empty.

This is used for batching checks for queues stored at the same place.

Parameters

array $types List of queues types

Returns: array|null (list of non-empty queue types) or null if unsupported

Exceptions

JobQueueError

Since: 1.22

Definition at line 703 of file JobQueue.php.

References doGetSiblingQueuesWithJobs().

◆ getSize()

JobQueue::getSize ( )

final

Get the number of available (unacquired, non-delayed) jobs in the queue.

Queue classes should use caching if they are any slower without memcached.

If caching is used, this number might be out of date for a minute.

Returns: int

Exceptions

JobQueueError

Definition at line 261 of file JobQueue.php.

References $res, and doGetSize().

◆ getType()

JobQueue::getType ( )

final

Returns: string Job type that this queue handles

Definition at line 177 of file JobQueue.php.

References $type.

Referenced by JobQueueDB\getAllAbandonedJobs(), JobQueueDB\getAllAcquiredJobs(), and JobQueueDB\getAllQueuedJobs().

◆ getWiki()

JobQueue::getWiki ( )

final

Returns: string Wiki ID

Deprecated: since 1.33 (hard deprecated since 1.37)

Definition at line 169 of file JobQueue.php.

References wfDeprecated().

◆ incrStats()

JobQueue::incrStats	(	$key,
		$type,
		$delta = 1 )

protected

Call StatsdDataFactoryInterface::updateCount() for the queue overall and for the queue type.

Parameters

string	$key	Event type
string	$type	Job type
int	$delta

Since: 1.22

Definition at line 780 of file JobQueue.php.

Referenced by JobQueueDB\doAck(), JobQueueRedis\doAck(), JobQueueRedis\doBatchPush(), JobQueueDB\doBatchPushInternal(), JobQueueDB\doPop(), JobQueueRedis\doPop(), pop(), and JobQueueDB\recycleAndDeleteStaleJobs().

◆ isEmpty()

JobQueue::isEmpty ( )

final

Quickly check if the queue has no available (unacquired, non-delayed) jobs.

Queue classes should use caching if they are any slower without memcached.

If caching is used, this might return false when there are actually no jobs. If pop() is called and returns false then it should correct the cache. Also, calling flushCaches() first prevents this. However, this effect is typically not distinguishable from the race condition between isEmpty() and pop().

Returns: bool

Exceptions

JobQueueError

Definition at line 240 of file JobQueue.php.

References $res, and doIsEmpty().

◆ isRootJobOldDuplicate()

JobQueue::isRootJobOldDuplicate ( IJobSpecification $job )

finalprotected

Check if the "root" job of a given job has been superseded by a newer one.

Parameters

IJobSpecification $job

Exceptions

JobQueueError

Returns: bool

Definition at line 529 of file JobQueue.php.

References $job, and doIsRootJobOldDuplicate().

Referenced by pop().

◆ optimalOrder()

JobQueue::optimalOrder ( )

abstractprotected

Get the default queue order to use if configuration does not specify one.

Returns: string One of (random, timestamp, fifo, undefined)

Reimplemented in JobQueueDB, JobQueueFederated, JobQueueMemory, and JobQueueRedis.

Referenced by __construct().

◆ pop()

JobQueue::pop ( )

final

Pop a job off of the queue.

This requires $wgJobClasses to be set for the given job type. Outside callers should use JobQueueGroup::pop() instead of this function.

Exceptions

JobQueueError

Returns: RunnableJob|false Returns false if there are no jobs

Definition at line 407 of file JobQueue.php.

References $job, assertNotReadOnly(), doPop(), incrStats(), isRootJobOldDuplicate(), and DuplicateJob\newFromJob().

◆ push()

JobQueue::push	(		$jobs,
			$flags = 0 )

final

Push one or more jobs into the queue.

This does not require $wgJobClasses to be set for the given job type. Outside callers should use JobQueueGroup::push() instead of this function.

Parameters

IJobSpecification \| IJobSpecification[]	$jobs
int	$flags	Bitfield (supports JobQueue::QOS_ATOMIC)

Returns: void

Exceptions

JobQueueError

Definition at line 353 of file JobQueue.php.

References batchPush().

Referenced by CopyJobQueue\copyJobs().

◆ supportedOrders()

JobQueue::supportedOrders ( )

abstractprotected

Get the allowed queue orders for configuration validation.

Returns: array Subset of (random, timestamp, fifo, undefined)

Reimplemented in JobQueueDB, JobQueueFederated, JobQueueMemory, and JobQueueRedis.

Referenced by __construct().

◆ supportsDelayedJobs()

JobQueue::supportsDelayedJobs ( )

protected

Find out if delayed jobs are supported for configuration validation.

Stability: stable: to override

Returns: bool Whether delayed jobs are supported

Reimplemented in JobQueueFederated, and JobQueueRedis.

Definition at line 208 of file JobQueue.php.

Referenced by delayedJobsEnabled().

◆ supportsTypeAgnostic()

JobQueue::supportsTypeAgnostic ( )

protected

Subclasses should set this to true if they support type agnostic queues.

Returns: bool

Since: 1.38

Definition at line 791 of file JobQueue.php.

Referenced by __construct().

◆ waitForBackups()

JobQueue::waitForBackups ( )

final

Wait for any replica DBs or backup servers to catch up.

This does nothing for certain queue classes.

Returns: void

Exceptions

JobQueueError

Definition at line 604 of file JobQueue.php.

References doWaitForBackups().

Referenced by CopyJobQueue\copyJobs().

Member Data Documentation

◆ $claimTTL

int JobQueue::$claimTTL

protected

Time to live in seconds.

Definition at line 47 of file JobQueue.php.

◆ $domain

string JobQueue::$domain

protected

DB domain ID.

Definition at line 41 of file JobQueue.php.

Referenced by JobQueueFederated\__construct(), and getDomain().

◆ $idGenerator

GlobalIdGenerator JobQueue::$idGenerator

protected

Definition at line 55 of file JobQueue.php.

◆ $maxTries

int JobQueue::$maxTries

protected

Maximum number of times to try a job.

Definition at line 49 of file JobQueue.php.

◆ $order

string JobQueue::$order

protected

Job priority for pop()

Definition at line 45 of file JobQueue.php.

Referenced by getOrder().

◆ $readOnlyReason

string false JobQueue::$readOnlyReason

protected

Read only rationale (or false if r/w)

Definition at line 51 of file JobQueue.php.

Referenced by getReadOnlyReason().

◆ $stats

StatsdDataFactoryInterface JobQueue::$stats

protected

Definition at line 53 of file JobQueue.php.

◆ $type

string JobQueue::$type

protected

Job type.

Definition at line 43 of file JobQueue.php.

Referenced by JobQueueFederated\doGetSiblingQueueSizes(), JobQueueRedis\doGetSiblingQueueSizes(), getRootJobCacheKey(), and getType().

◆ $typeAgnostic

bool JobQueue::$typeAgnostic

protected

Definition at line 61 of file JobQueue.php.

◆ $wanCache

WANObjectCache JobQueue::$wanCache

protected

Definition at line 58 of file JobQueue.php.

◆ QOS_ATOMIC

const JobQueue::QOS_ATOMIC = 1

protected

Definition at line 65 of file JobQueue.php.

◆ ROOTJOB_TTL

const JobQueue::ROOTJOB_TTL = 2419200

protected

Definition at line 67 of file JobQueue.php.

The documentation for this class was generated from the following file:

includes/jobqueue/JobQueue.php

Public Member Functions

Static Public Member Functions

Protected Member Functions

Protected Attributes

Detailed Description

Constructor & Destructor Documentation

◆ __construct()

Member Function Documentation

◆ ack()

◆ assertNotReadOnly()

◆ batchPush()

◆ deduplicateRootJob()

◆ delayedJobsEnabled()

◆ delete()

◆ doAck()

◆ doBatchPush()

◆ doDeduplicateRootJob()

◆ doDelete()

◆ doFlushCaches()

◆ doGetAbandonedCount()

◆ doGetAcquiredCount()

◆ doGetDelayedCount()

◆ doGetSiblingQueueSizes()

◆ doGetSiblingQueuesWithJobs()

◆ doGetSize()

◆ doIsEmpty()

◆ doIsRootJobOldDuplicate()

◆ doPop()

◆ doWaitForBackups()

◆ factory()

◆ factoryJob()

◆ flushCaches()

◆ getAbandonedCount()

◆ getAcquiredCount()

◆ getAllAbandonedJobs()

◆ getAllAcquiredJobs()

◆ getAllDelayedJobs()

◆ getAllQueuedJobs()

◆ getCoalesceLocationInternal()

◆ getDelayedCount()

◆ getDomain()

◆ getOrder()

◆ getReadOnlyReason()

◆ getRootJobCacheKey()

◆ getSiblingQueueSizes()

◆ getSiblingQueuesWithJobs()

◆ getSize()

◆ getType()

◆ getWiki()

◆ incrStats()

◆ isEmpty()

◆ isRootJobOldDuplicate()

◆ optimalOrder()

◆ pop()

◆ push()

◆ supportedOrders()

◆ supportsDelayedJobs()

◆ supportsTypeAgnostic()

◆ waitForBackups()

Member Data Documentation

◆ $claimTTL

◆ $domain

◆ $idGenerator

◆ $maxTries

◆ $order

◆ $readOnlyReason

◆ $stats

◆ $type

◆ $typeAgnostic

◆ $wanCache

◆ QOS_ATOMIC

◆ ROOTJOB_TTL