HTMLCacheUpdateJob Class Reference

Job to purge the HTML/file cache for all pages that link to or use another page or file. More...

Inherits Job.

Collaboration diagram for HTMLCacheUpdateJob:

Public Member Functions
	__construct (Title $title, array $params)
	getDeduplicationInfo ()
	Subclasses may need to override this to make duplication detection work.
	run ()
	Run the job.
	workItemCount ()
Public Member Functions inherited from Job
	__construct ( $command, $params=null)
	allowRetries ()
	Whether to retry execution of this job if run() returned false or threw an exception. Warning In some setups (i.e. when using change-propagation) jobs may still be retried even when this is false if the job fails due to a timeout unless it is also configured in change-prop config (T358939). Returns bool Whether this job can be retried on failure by job runners Since 1.21
	getLastError ()
	Returns string
	getMetadata ( $field=null)
	getParams ()
	Returns array Parameters that specify sources, targets, and options for execution
	getQueuedTimestamp ()
	getReadyTimestamp ()
	Returns int|null UNIX timestamp of when the job was runnable, or null Since 1.26
	getReleaseTimestamp ()
	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
	getRootJobParams ()
	getTitle ()
	getType ()
	Returns string Job type that defines what sort of changes this job makes
	hasExecutionFlag ( $flag)
	Parameters int $flag JOB_* class constant Returns bool Since 1.31
	hasRootJobParams ()
	ignoreDuplicates ()
	Whether the queue should reject insertion of this job if a duplicate exists.
	isRootJob ()
	setMetadata ( $field, $value)
	teardown ( $status)
	toString ()
	Returns string Debugging string describing the job
Public Member Functions inherited from RunnableJob
	tearDown ( $status)
	Do any final cleanup after run(), deferred updates, and all DB commits happen.

Static Public Member Functions
static	newForBacklinks (PageReference $page, $table, $params=[])
Static Public Member Functions inherited from Job
static	factory ( $command, $params=[])
	Create the appropriate object to handle a specific job.
static	newRootJobParams ( $key)
	Get "root job" parameters for a task.

Protected Member Functions
	invalidateTitles (array $pages)
Protected Member Functions inherited from Job
	addTeardownCallback ( $callback)
	setLastError ( $error)

Additional Inherited Members
Public Attributes inherited from Job
string	$command
array	$metadata = []
	Additional queue metadata.
array	$params
	Array of job parameters.
Protected Attributes inherited from Job
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

Job to purge the HTML/file cache for all pages that link to or use another page or file.

This job comes in a few variants:

• a) Recursive jobs to purge caches for backlink pages for a given title. These jobs have (recursive:true,table: set.
• b) Jobs to purge caches for a set of titles (the job title is ignored). These jobs have (pages:(<page ID>:(<namespace>,<title>),...) set.

Definition at line 38 of file HTMLCacheUpdateJob.php.

Constructor & Destructor Documentation

__construct()

HTMLCacheUpdateJob::__construct	(	Title	$title,
		array	$params )

Definition at line 42 of file HTMLCacheUpdateJob.php.

References $params.

Member Function Documentation

getDeduplicationInfo()

HTMLCacheUpdateJob::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.

Stability: stable

to override

Returns

array Map of key/values

Since

1.21

Reimplemented from Job.

Definition at line 180 of file HTMLCacheUpdateJob.php.

invalidateTitles()

HTMLCacheUpdateJob::invalidateTitles ( array $pages )

protected

Parameters

array

$pages

Map of (page ID => (namespace, DB key)) entries

Definition at line 119 of file HTMLCacheUpdateJob.php.

References wfTimestampOrNull().

Referenced by run().

newForBacklinks()

static HTMLCacheUpdateJob::newForBacklinks ( PageReference $page, $table, $params = [] )

static

Parameters

PageReference	$page	Page to purge backlink pages from
string	$table	Backlink table name
array	$params	Additional job parameters

Returns

HTMLCacheUpdateJob

Definition at line 63 of file HTMLCacheUpdateJob.php.

References $params, Job\$title, and Job\newRootJobParams().

run()

HTMLCacheUpdateJob::run

(

)

Run the job.

If this method returns false or completes exceptionally, the job runner will retry executing this job unless the number of retries has exceeded its configured retry limit. Retries are allowed by default, unless allowRetries() is overridden to disable retries.

See the architecture doc for more information.

Returns

bool Return false to instruct the job runner to retry a failed job. Otherwise return true to indicate that a job completed (i.e. succeeded, or failed in a way that's deterministic or redundant).

Implements RunnableJob.

Definition at line 76 of file HTMLCacheUpdateJob.php.

References Job\getRootJobParams(), invalidateTitles(), and BacklinkJobUtils\partitionBacklinkJob().

workItemCount()

HTMLCacheUpdateJob::workItemCount

(

)

Stability: stable

to override

Returns

int

Reimplemented from Job.

Definition at line 194 of file HTMLCacheUpdateJob.php.

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

• includes/jobqueue/jobs/HTMLCacheUpdateJob.php