Class to both describe a background job and handle jobs. More...

Inheritance diagram for Job:

[legend]

Collaboration diagram for Job:

[legend]

Public Member Functions

__construct ( $command, $params=null)

Stable to call.

allowRetries ()

Returns: bool Whether this job can be retried on failure by job runners

Since: 1.21

Stable to override

getDeduplicationInfo ()

Subclasses may need to override this to make duplication detection work.

getLastError ()

Returns: string

Stable to override

getMetadata ( $field=null)

Stable to override.

getParams ()

Returns: array Parameters that specify sources, targets, and options for execution

Stable to override

getQueuedTimestamp ()

getReadyTimestamp ()

Returns: int|null UNIX timestamp of when the job was runnable, or null

Since: 1.26

Stable to override

getReleaseTimestamp ()

Stable to override.

getRequestId ()

Returns: string|null Id of the request that created this job. Follows jobs recursively, allowing to track the id of the request that started a job when jobs insert jobs which insert other jobs.

Since: 1.27

Stable to override

getRootJobParams ()

Stable to override.

getTitle ()

getType ()

Returns: string Job type that defines what sort of changes this job makes

Stable to override

hasExecutionFlag ( $flag)

Parameters

int $flag JOB_* class constant

Returns: bool

Since: 1.31

Stable to override

hasRootJobParams ()

Stable to override.

ignoreDuplicates ()

Whether the queue should reject insertion of this job if a duplicate exists.

isRootJob ()

Stable to override.

setMetadata ( $field, $value)

Stable to override.

teardown ( $status)

Stable to override

toString ()

Returns: string Debugging string describing the job

Stable to override

workItemCount ()

Stable to override.

Public Member Functions inherited from RunnableJob

run ()

Run the job.

tearDown ( $status)

Do any final cleanup after run(), deferred updates, and all DB commits happen.

Static Public Member Functions
static	factory ( $command, $params=[])
	Create the appropriate object to handle a specific job.

static	newRootJobParams ( $key)
	Get "root job" parameters for a task.

Public Attributes
string	$command

array	$metadata = []
	Additional queue metadata.

array	$params
	Array of job parameters.

Protected Member Functions
	addTeardownCallback ( $callback)

	setLastError ( $error)

Protected Attributes
string	$error
	Text for error that occurred last.

int	$executionFlags = 0
	Bitfield of JOB_* class constants.

bool	$removeDuplicates = false
	Expensive jobs may set this to true.

callable[]	$teardownCallbacks = []

Title	$title

Detailed Description

Class to both describe a background job and handle jobs.

To push jobs onto queues, use JobQueueGroup::singleton()->push();

Stable to extend

Definition at line 32 of file Job.php.

Constructor & Destructor Documentation

◆ __construct()

Job::__construct	(	$command,
		$params = `null`
	)

Stable to call.

Parameters

string	$command
array \| Title \| null	$params

Definition at line 120 of file Job.php.

References $command, $params, $title, Title\getDBkey(), Title\getNamespace(), and NS_SPECIAL.

Member Function Documentation

◆ addTeardownCallback()

Job::addTeardownCallback ( $callback )

protected

Parameters

callable $callback A function with one parameter, the success status, which will be false if the job failed or it succeeded but the DB changes could not be committed or any deferred updates threw an exception. (This parameter was added in 1.28.)

Since: 1.27

Definition at line 387 of file Job.php.

Referenced by AssembleUploadChunksJob\run(), and PublishStashedFileJob\run().

◆ allowRetries()

Job::allowRetries ( )

Returns: bool Whether this job can be retried on failure by job runners

Since: 1.21

Stable to override

Implements RunnableJob.

Reimplemented in AssembleUploadChunksJob, PublishStashedFileJob, and ThumbnailRenderJob.

Definition at line 279 of file Job.php.

◆ factory()

static Job::factory	(	$command,
		$params = `[]`
	)

static

Create the appropriate object to handle a specific job.

Parameters

string	$command	Job command
array \| Title	$params	Job parameters

Exceptions

InvalidArgumentException

Returns: Job

Definition at line 65 of file Job.php.

References $command, $job, $params, $title, $wgJobClasses, and NS_SPECIAL.

Referenced by JobQueue\factoryJob().

◆ getDeduplicationInfo()

Job::getDeduplicationInfo ( )

Subclasses may need to override this to make duplication detection work.

The resulting map conveys everything that makes the job unique. This is only checked if ignoreDuplicates() returns true, meaning that duplicate jobs are supposed to be ignored.

Stable to override

Returns: array Map of key/values

Since: 1.21

Implements IJobSpecification.

Reimplemented in AssembleUploadChunksJob, CategoryMembershipChangeJob, ClearUserWatchlistJob, HTMLCacheUpdateJob, PublishStashedFileJob, and RefreshLinksJob.

Definition at line 301 of file Job.php.

References getParams(), and getType().

◆ getLastError()

Job::getLastError ( )

Returns: string

Stable to override

Implements RunnableJob.

Definition at line 469 of file Job.php.

References $error.

◆ getMetadata()

Job::getMetadata ( $field = null )

Stable to override.

Parameters

string | null $field Metadata field or null to get all the metadata

Returns: mixed|null Value; null if missing

Since: 1.33

Implements RunnableJob.

Definition at line 195 of file Job.php.

References $metadata.

Referenced by setMetadata().

◆ getParams()

Job::getParams ( )

Returns: array Parameters that specify sources, targets, and options for execution

Stable to override

Implements IJobSpecification.

Definition at line 185 of file Job.php.

References $params.

Referenced by getDeduplicationInfo(), and ClearUserWatchlistJob\run().

◆ getQueuedTimestamp()

Job::getQueuedTimestamp ( )

Returns: int|null UNIX timestamp of when the job was queued, or null

Since: 1.26

Definition at line 236 of file Job.php.

References wfTimestampOrNull().

Referenced by getReadyTimestamp().

◆ getReadyTimestamp()

Job::getReadyTimestamp ( )

Returns: int|null UNIX timestamp of when the job was runnable, or null

Since: 1.26

Stable to override

Implements RunnableJob.

Definition at line 254 of file Job.php.

References getQueuedTimestamp(), and getReleaseTimestamp().

◆ getReleaseTimestamp()

Job::getReleaseTimestamp ( )

Stable to override.

Returns: int|null UNIX timestamp to delay running this job until, otherwise null

Since: 1.22

Implements IJobSpecification.

Definition at line 226 of file Job.php.

References wfTimestampOrNull().

Referenced by getReadyTimestamp().

◆ getRequestId()

Job::getRequestId ( )

Returns: string|null Id of the request that created this job. Follows jobs recursively, allowing to track the id of the request that started a job when jobs insert jobs which insert other jobs.

Since: 1.27

Stable to override

Implements RunnableJob.

Definition at line 246 of file Job.php.

Referenced by DeletePageJob\run().

◆ getRootJobParams()

Job::getRootJobParams ( )

Stable to override.

See also: JobQueue::deduplicateRootJob()

Returns: array

Since: 1.21

Implements IJobSpecification.

Definition at line 354 of file Job.php.

Referenced by HTMLCacheUpdateJob\run(), and RefreshLinksJob\run().

◆ getTitle()

Job::getTitle ( )

final

Returns: Title

Definition at line 177 of file Job.php.

References $title.

◆ getType()

Job::getType ( )

Returns: string Job type that defines what sort of changes this job makes

Stable to override

Implements IJobSpecification.

Definition at line 170 of file Job.php.

References $command.

Referenced by getDeduplicationInfo().

◆ hasExecutionFlag()

Job::hasExecutionFlag ( $flag )

Parameters

int $flag JOB_* class constant

Returns: bool

Since: 1.31

Stable to override

Implements RunnableJob.

Definition at line 162 of file Job.php.

◆ hasRootJobParams()

Job::hasRootJobParams ( )

Stable to override.

See also: JobQueue::deduplicateRootJob()

Returns: bool

Since: 1.22

Implements IJobSpecification.

Definition at line 367 of file Job.php.

Referenced by isRootJob().

◆ ignoreDuplicates()

Job::ignoreDuplicates ( )

Whether the queue should reject insertion of this job if a duplicate exists.

This can be used to avoid duplicated effort or combined with delayed jobs to coalesce updates into larger batches. Claimed jobs are never treated as duplicates of new jobs, and some queues may allow a few duplicates due to network partitions and fail-over. Thus, additional locking is needed to enforce mutual exclusion if this is really needed.

Stable to override

Returns: bool

Implements IJobSpecification.

Definition at line 271 of file Job.php.

References $removeDuplicates.

◆ isRootJob()

Job::isRootJob ( )

Stable to override.

See also: JobQueue::deduplicateRootJob()

Returns: bool Whether this is job is a root job

Implements IJobSpecification.

Definition at line 377 of file Job.php.

References hasRootJobParams().

◆ newRootJobParams()

static Job::newRootJobParams ( $key )

static

Get "root job" parameters for a task.

This is used to no-op redundant jobs, including child jobs of jobs, as long as the children inherit the root job parameters. When a job with root job parameters and "rootJobIsSelf" set is pushed, the deduplicateRootJob() method is automatically called on it. If the root job is only virtual and not actually pushed (e.g. the sub-jobs are inserted directly), then call deduplicateRootJob() directly.

See also: JobQueue::deduplicateRootJob()

Parameters

string $key A key that identifies the task

Returns

array Map of:

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

Since: 1.21

Definition at line 340 of file Job.php.

References wfTimestampNow().

Referenced by HTMLCacheUpdateJob\newForBacklinks(), and LinksUpdate\queueRecursiveJobsForTable().

◆ setLastError()

Job::setLastError ( $error )

protected

Definition at line 461 of file Job.php.

References $error.

Referenced by RefreshLinksJob\getCurrentRevisionIfUnchanged(), ThumbnailRenderJob\hitThumbUrl(), AssembleUploadChunksJob\run(), CategoryMembershipChangeJob\run(), ClearUserWatchlistJob\run(), DeleteLinksJob\run(), DoubleRedirectJob\run(), PublishStashedFileJob\run(), RefreshLinksJob\run(), ThumbnailRenderJob\run(), and RefreshLinksJob\runForTitle().

◆ setMetadata()

Job::setMetadata	(	$field,
		$value
	)

Stable to override.

Parameters

string	$field	Key name to set the value for
mixed	$value	The value to set the field for

Returns: mixed|null The prior field value; null if missing

Since: 1.33

Implements RunnableJob.

Definition at line 210 of file Job.php.

References getMetadata().

◆ teardown()

Job::teardown ( $status )

Stable to override

Definition at line 395 of file Job.php.

◆ toString()

Job::toString ( )

Returns: string Debugging string describing the job

Stable to override

Implements RunnableJob.

Definition at line 405 of file Job.php.

References $command, and $s.

◆ workItemCount()

Job::workItemCount ( )

Stable to override.

Returns: int

Implements RunnableJob.

Reimplemented in HTMLCacheUpdateJob, and RefreshLinksJob.

Definition at line 287 of file Job.php.

Member Data Documentation

◆ $command

string Job::$command

Definition at line 34 of file Job.php.

Referenced by __construct(), WatchlistExpiryJob\__construct(), factory(), getType(), and toString().

◆ $error

string Job::$error

protected

Text for error that occurred last.

Definition at line 49 of file Job.php.

Referenced by getLastError(), and setLastError().

◆ $executionFlags

int Job::$executionFlags = 0

protected

Bitfield of JOB_* class constants.

Definition at line 55 of file Job.php.

◆ $metadata

array Job::$metadata = []

Additional queue metadata.

Definition at line 40 of file Job.php.

Referenced by getMetadata().

◆ $params

array Job::$params

Array of job parameters.

Definition at line 37 of file Job.php.

Referenced by __construct(), EmaillingJob\__construct(), CdnPurgeJob\__construct(), ClearUserWatchlistJob\__construct(), ClearWatchlistNotificationsJob\__construct(), DeletePageJob\__construct(), DuplicateJob\__construct(), EnqueueJob\__construct(), NullJob\__construct(), UserOptionsUpdateJob\__construct(), ActivityUpdateJob\__construct(), WatchlistExpiryJob\__construct(), AssembleUploadChunksJob\__construct(), DeleteLinksJob\__construct(), DoubleRedirectJob\__construct(), EnotifNotifyJob\__construct(), HTMLCacheUpdateJob\__construct(), PublishStashedFileJob\__construct(), RefreshLinksJob\__construct(), ThumbnailRenderJob\__construct(), factory(), getParams(), RefreshLinksJob\newDynamic(), HTMLCacheUpdateJob\newForBacklinks(), RefreshLinksJob\newPrioritized(), and NullJob\run().

◆ $removeDuplicates

bool Job::$removeDuplicates = false

protected

Expensive jobs may set this to true.

Definition at line 46 of file Job.php.

Referenced by ignoreDuplicates().

◆ $teardownCallbacks

callable [] Job::$teardownCallbacks = []

protected

Definition at line 52 of file Job.php.

◆ $title

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

includes/jobqueue/Job.php

Public Member Functions

Static Public Member Functions

Public Attributes

Protected Member Functions

Protected Attributes

Detailed Description

Constructor & Destructor Documentation

◆ __construct()

Member Function Documentation

◆ addTeardownCallback()

◆ allowRetries()

◆ factory()

◆ getDeduplicationInfo()

◆ getLastError()

◆ getMetadata()

◆ getParams()

◆ getQueuedTimestamp()

◆ getReadyTimestamp()

◆ getReleaseTimestamp()

◆ getRequestId()

◆ getRootJobParams()

◆ getTitle()

◆ getType()

◆ hasExecutionFlag()

◆ hasRootJobParams()

◆ ignoreDuplicates()

◆ isRootJob()

◆ newRootJobParams()

◆ setLastError()

◆ setMetadata()

◆ teardown()

◆ toString()

◆ workItemCount()

Member Data Documentation

◆ $command

◆ $error

◆ $executionFlags

◆ $metadata

◆ $params

◆ $removeDuplicates

◆ $teardownCallbacks

◆ $title