CdnCacheUpdate Class Reference

Handles purging the appropriate CDN objects given a list of URLs or Title instances. More...

Inheritance diagram for CdnCacheUpdate:

Collaboration diagram for CdnCacheUpdate:

Public Member Functions
	__construct (array $targets, array $options=[])
	doUpdate ()
	Perform the actual work.
	getUrls ()
	merge (MergeableUpdate $update)
	Merge this update with $update.

Static Public Member Functions
static	newFromTitles ( $titles, $urls=[])
	Create an update object from an array of Title objects, or a TitleArray object.
static	purge (array $urls)
	Purges a list of CDN nodes defined in $wgCdnServers.

Private Member Functions
	resolveReboundDelayByUrl ()

Static Private Member Functions
static	expand ( $url)
	Expand local URLs to fully-qualified URLs using the internal protocol and host defined in $wgInternalServer.
static	getRuleForURL ( $url, $rules)
	Find the HTCP routing rule to use for a given URL.
static	HTCPPurge (array $urls)
	Send Hyper Text Caching Protocol (HTCP) CLR requests.
static	naivePurge (array $urls)
	Send HTTP PURGE requests for each of the URLs to all of the cache servers.

Private Attributes
array[]	$titleTuples = []
	List of (Title, rebound purge delay) tuples.
array[]	$urlTuples = []
	List of (URL, rebound purge delay) tuples.

Detailed Description

Handles purging the appropriate CDN objects given a list of URLs or Title instances.

Definition at line 28 of file CdnCacheUpdate.php.

Constructor & Destructor Documentation

__construct()

CdnCacheUpdate::__construct	(	array	$targets,
		array	$options = []
	)

Parameters

string[] | Title[]	$targets	Collection of URLs/titles to be purged from CDN
array	$options	Options map. Supports: reboundDelay: how many seconds after the first purge to send a rebound purge. No rebound purge will be sent if this is not positive. [Default: 0]

Definition at line 43 of file CdnCacheUpdate.php.

Member Function Documentation

doUpdate()

CdnCacheUpdate::doUpdate

(

)

Perform the actual work.

Implements DeferrableUpdate.

Definition at line 79 of file CdnCacheUpdate.php.

References purge(), and resolveReboundDelayByUrl().

expand()

static CdnCacheUpdate::expand (   $url )

staticprivate

Expand local URLs to fully-qualified URLs using the internal protocol and host defined in $wgInternalServer.

Input that's already fully- qualified will be passed through unchanged.

This is used to generate purge URLs that may be either local to the main wiki or include a non-native host, such as images hosted on a second internal server.

Client functions should not need to call this.

Parameters

string

$url

Returns

string

Definition at line 335 of file CdnCacheUpdate.php.

References PROTO_INTERNAL, and wfExpandUrl().

Referenced by HTCPPurge(), and naivePurge().

getRuleForURL()

static CdnCacheUpdate::getRuleForURL (   $url,   $rules  )

staticprivate

Find the HTCP routing rule to use for a given URL.

Parameters

string	$url	URL to match
array	$rules	Array of rules, see $wgHTCPRouting for format and behavior

Returns

mixed Element of $rules that matched, or false if nothing matched

Definition at line 345 of file CdnCacheUpdate.php.

Referenced by HTCPPurge().

getUrls()

CdnCacheUpdate::getUrls

(

)

Returns

string[] List of URLs

Definition at line 154 of file CdnCacheUpdate.php.

References resolveReboundDelayByUrl().

HTCPPurge()

static CdnCacheUpdate::HTCPPurge ( array  $urls )

staticprivate

Send Hyper Text Caching Protocol (HTCP) CLR requests.

Exceptions

MWException

Parameters

string[]

$urls

Collection of URLs to purge

Definition at line 195 of file CdnCacheUpdate.php.

References $wgHTCPMulticastTTL, $wgHTCPRouting, expand(), getRuleForURL(), and wfDebugLog().

Referenced by purge().

merge()

CdnCacheUpdate::merge

(

MergeableUpdate

$update

)

Merge this update with $update.

Parameters

MergeableUpdate

$update

Update of the same class type

Implements MergeableUpdate.

Definition at line 58 of file CdnCacheUpdate.php.

naivePurge()

static CdnCacheUpdate::naivePurge ( array  $urls )

staticprivate

Send HTTP PURGE requests for each of the URLs to all of the cache servers.

Parameters

string[]

$urls

Exceptions

Exception

Definition at line 291 of file CdnCacheUpdate.php.

References $wgCdnServers, expand(), MW_VERSION, and wfParseUrl().

Referenced by purge().

newFromTitles()

static CdnCacheUpdate::newFromTitles (   $titles,   $urls = []  )

static

Create an update object from an array of Title objects, or a TitleArray object.

Parameters

Traversable | Title[]	$titles
string[]	$urls

Returns

CdnCacheUpdate

Deprecated:

Since 1.35 Use HtmlCacheUpdater instead

Definition at line 75 of file CdnCacheUpdate.php.

purge()

static CdnCacheUpdate::purge ( array  $urls )

static

Purges a list of CDN nodes defined in $wgCdnServers.

$urlArr should contain the full URLs to purge as values (example: $urlArr[] = 'http://my.host/something')

Parameters

string[]

$urls

List of full URLs to purge

Definition at line 112 of file CdnCacheUpdate.php.

References $wgCdnServers, $wgHTCPRouting, HTCPPurge(), naivePurge(), and wfDebugLog().

Referenced by BenchmarkPurge\benchCdn(), doUpdate(), and CdnPurgeJob\run().

resolveReboundDelayByUrl()

CdnCacheUpdate::resolveReboundDelayByUrl ( )

private

Returns

int[] Map of (URL => rebound purge delay)

Definition at line 161 of file CdnCacheUpdate.php.

References $title.

Referenced by doUpdate(), and getUrls().

Member Data Documentation

$titleTuples

array [] CdnCacheUpdate::$titleTuples = []

private

List of (Title, rebound purge delay) tuples.

Definition at line 32 of file CdnCacheUpdate.php.

$urlTuples

array [] CdnCacheUpdate::$urlTuples = []

private

List of (URL, rebound purge delay) tuples.

Definition at line 30 of file CdnCacheUpdate.php.

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

• includes/deferred/CdnCacheUpdate.php