Cache messages that are defined by MediaWiki-namespace pages or by hooks. More...

Inherits LoggerAwareInterface.

Collaboration diagram for MessageCache:

Public Member Functions
	__construct (WANObjectCache $wanCache, BagOStuff $clusterCache, BagOStuff $serverCache, Language $contLang, LanguageConverterFactory $langConverterFactory, LoggerInterface $logger, ServiceOptions $options, LanguageFactory $langFactory, LocalisationCache $localisationCache, LanguageNameUtils $languageNameUtils, LanguageFallback $languageFallback, HookContainer $hookContainer)

	clear ()
	Clear all stored messages in global and local cache.

	disable ()

	enable ()

	figureMessage ( $key)

	get ( $key, $useDB=true, $langcode=true)
	Get a message from either the content language or the user language.

	getAllMessageKeys ( $code)
	Get all message keys stored in the message cache for a given language.

	getCheckKey ( $code)

	getMsgFromNamespace ( $title, $code)
	Get a message from the MediaWiki namespace, with caching.

	getParser ()

	isDisabled ()
	Whether DB/cache usage is disabled for determining messages.

	parse ( $text, PageReference $page=null, $linestart=true, $interface=false, $language=null)

	refreshAndReplaceInternal (string $code, array $replacements)

	replace ( $title, $text)
	Updates cache as necessary when message page is changed.

	setLogger (LoggerInterface $logger)

	transform ( $message, $interface=false, $language=null, PageReference $page=null)

	updateMessageOverride (LinkTarget $linkTarget, Content $content=null)
	Purge message caches when a MediaWiki: page is created, updated, or deleted.

Static Public Member Functions
static	normalizeKey ( $key)
	Normalize message key input.

Public Attributes
const	CONSTRUCTOR_OPTIONS
	Options to be included in the ServiceOptions.

const	MAX_REQUEST_LANGUAGES = 10
	The size of the MapCacheLRU which stores message data.

Detailed Description

Cache messages that are defined by MediaWiki-namespace pages or by hooks.

Definition at line 56 of file MessageCache.php.

Constructor & Destructor Documentation

◆ __construct()

MessageCache::__construct	(	WANObjectCache	$wanCache,
		BagOStuff	$clusterCache,
		BagOStuff	$serverCache,
		Language	$contLang,
		LanguageConverterFactory	$langConverterFactory,
		LoggerInterface	$logger,
		ServiceOptions	$options,
		LanguageFactory	$langFactory,
		LocalisationCache	$localisationCache,
		LanguageNameUtils	$languageNameUtils,
		LanguageFallback	$languageFallback,
		HookContainer	$hookContainer )

Access: internal: For use by ServiceWiring

Parameters

WANObjectCache	$wanCache
BagOStuff	$clusterCache
BagOStuff	$serverCache
Language	$contLang	Content language of site
LanguageConverterFactory	$langConverterFactory
LoggerInterface	$logger
ServiceOptions	$options
LanguageFactory	$langFactory
LocalisationCache	$localisationCache
LanguageNameUtils	$languageNameUtils
LanguageFallback	$languageFallback
HookContainer	$hookContainer

Definition at line 192 of file MessageCache.php.

References MediaWiki\Config\ServiceOptions\assertRequiredOptions(), disable(), MediaWiki\Config\ServiceOptions\get(), Language\getCode(), and MediaWiki\Languages\LanguageConverterFactory\getLanguageConverter().

Member Function Documentation

◆ clear()

MessageCache::clear ( )

Clear all stored messages in global and local cache.

Mainly used after a mass rebuild

Definition at line 1460 of file MessageCache.php.

References getCheckKey().

◆ disable()

MessageCache::disable ( )

Definition at line 1431 of file MessageCache.php.

References disable().

Referenced by __construct(), disable(), enable(), get(), and replace().

◆ enable()

MessageCache::enable ( )

Definition at line 1435 of file MessageCache.php.

References disable().

◆ figureMessage()

MessageCache::figureMessage ( $key )

Parameters

string $key

Returns: array

Definition at line 1472 of file MessageCache.php.

References $lang.

Referenced by replace().

◆ get()

MessageCache::get	(	$key,
		$useDB = true,
		$langcode = true )

Get a message from either the content language or the user language.

First, assemble a list of languages to attempt getting the message from. This chain begins with the requested language and its fallbacks and then continues with the content language and its fallbacks. For each language in the chain, the following process will occur (in this order):

If a language-specific override, i.e., [[MW:msg/lang]], is available, use that. Note: for the content language, there is no /lang subpage.
Fetch from the static CDB cache.
If available, check the database for fallback language overrides.

This process provides a number of guarantees. When changing this code, make sure all of these guarantees are preserved.

If the requested language is not the content language, then the CDB cache for that specific language will take precedence over the root database page ([[MW:msg]]).
Fallbacks will be just that: fallbacks. A fallback language will never be reached if the message is available anywhere in the language for which it is a fallback.

Parameters

string	$key	The message key
bool	$useDB	If true, look for the message in the DB, false to use only the compiled l10n cache.
bool \| string \| Language	$langcode	Code of the language to get the message for. If string and a valid code, will create a standard language object If string but not a valid code, will create a basic language object If boolean and false, create object from the current users language If boolean and true, create object from the wikis content language If language object, use it as given

Returns: string|false False if the message doesn't exist, otherwise the message (which can be empty)

Definition at line 1022 of file MessageCache.php.

References disable(), and wfGetLangObj().

◆ getAllMessageKeys()

MessageCache::getAllMessageKeys ( $code )

Get all message keys stored in the message cache for a given language.

If $code is the content language code, this will return all message keys for which MediaWiki:msgkey exists. If $code is another language code, this will ONLY return message keys for which MediaWiki:msgkey/$code exists.

Parameters

string $code Language code

Returns: string[]|null Array of message keys

Definition at line 1500 of file MessageCache.php.

◆ getCheckKey()

MessageCache::getCheckKey ( $code )

Parameters

string $code Language code

Returns: string WAN cache key usable as a "check key" against language page edits

Definition at line 1540 of file MessageCache.php.

Referenced by clear(), and refreshAndReplaceInternal().

◆ getMsgFromNamespace()

MessageCache::getMsgFromNamespace	(		$title,
			$code )

Get a message from the MediaWiki namespace, with caching.

The key must first be converted to two-part lang/msg form if necessary.

Unlike self::get(), this function doesn't resolve fallback chains, and some callers require this behavior. LanguageConverter::parseCachedTable() and self::get() are some examples in core.

Parameters

string	$title	Message cache key with initial uppercase letter
string	$code	Code denoting the language to try

Returns: string|false The message, or false if it does not exist or on error

Definition at line 1209 of file MessageCache.php.

References $title.

◆ getParser()

MessageCache::getParser ( )

Returns: Parser

Definition at line 1370 of file MessageCache.php.

Referenced by parse(), and transform().

◆ isDisabled()

MessageCache::isDisabled ( )

Whether DB/cache usage is disabled for determining messages.

If so, this typically indicates either:

a) load() failed to find a cached copy nor query the DB
b) we are in a special context or error mode that cannot use the DB If the DB is ignored, any derived HTML output or cached objects may be wrong. To avoid long-term cache pollution, TTLs can be adjusted accordingly.

Returns: bool

Since: 1.27

Definition at line 1451 of file MessageCache.php.

◆ normalizeKey()

static MessageCache::normalizeKey ( $key )

static

Normalize message key input.

Parameters

string $key Input message key to be normalized

Returns: string Normalized message key

Definition at line 161 of file MessageCache.php.

◆ parse()

MessageCache::parse	(		$text,
		PageReference	$page = null,
			$linestart = true,
			$interface = false,
			$language = null )

Parameters

string	$text
PageReference \| null	$page
bool	$linestart	Whether or not this is at the start of a line
bool	$interface	Whether this is an interface message
Language \| StubUserLang \| string \| null	$language	Language code

Returns: ParserOutput|string

Definition at line 1388 of file MessageCache.php.

References $res, $wgTitle, getParser(), NS_SPECIAL, and Parser\parse().

◆ refreshAndReplaceInternal()

MessageCache::refreshAndReplaceInternal	(	string	$code,
		array	$replacements )

Parameters

string	$code
array[]	$replacements	List of (title, message key) pairs

Definition at line 790 of file MessageCache.php.

References $title, MapCacheLRU\get(), getCheckKey(), and NS_MEDIAWIKI.

◆ replace()

MessageCache::replace	(		$title,
			$text )

Updates cache as necessary when message page is changed.

Parameters

string	$title	Message cache key with initial uppercase letter
string \| false	$text	New contents of the page (false if deleted)

Definition at line 759 of file MessageCache.php.

References $title, disable(), and figureMessage().

Referenced by updateMessageOverride().

◆ setLogger()

MessageCache::setLogger ( LoggerInterface $logger )

Definition at line 228 of file MessageCache.php.

◆ transform()

MessageCache::transform	(		$message,
			$interface = false,
			$language = null,
		PageReference	$page = null )

Parameters

string	$message
bool	$interface
Language \| null	$language
PageReference \| null	$page

Returns: string

Definition at line 1341 of file MessageCache.php.

References getParser(), and Parser\transformMsg().

◆ updateMessageOverride()

MessageCache::updateMessageOverride	(	LinkTarget	$linkTarget,
		Content	$content = null )

Purge message caches when a MediaWiki: page is created, updated, or deleted.

Parameters

LinkTarget	$linkTarget	Message page title
Content \| null	$content	New content for edit/create, null on deletion

Since: 1.29

Definition at line 1525 of file MessageCache.php.

References $content, MediaWiki\Linker\LinkTarget\getDBkey(), and replace().

Member Data Documentation

◆ CONSTRUCTOR_OPTIONS

const MessageCache::CONSTRUCTOR_OPTIONS

Initial value:

= [
        MainConfigNames::UseDatabaseMessages,
        MainConfigNames::MaxMsgCacheEntrySize,
        MainConfigNames::AdaptiveMessageCache,
    ]

Options to be included in the ServiceOptions.

Definition at line 60 of file MessageCache.php.

◆ MAX_REQUEST_LANGUAGES

const MessageCache::MAX_REQUEST_LANGUAGES = 10

The size of the MapCacheLRU which stores message data.

The maximum number of languages which can be efficiently loaded in a given request.

Definition at line 70 of file MessageCache.php.

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

includes/language/MessageCache.php

Public Member Functions

Static Public Member Functions

Public Attributes

Detailed Description

Constructor & Destructor Documentation

◆ __construct()

Member Function Documentation

◆ clear()

◆ disable()

◆ enable()

◆ figureMessage()

◆ get()

◆ getAllMessageKeys()

◆ getCheckKey()

◆ getMsgFromNamespace()

◆ getParser()

◆ isDisabled()

◆ normalizeKey()

◆ parse()

◆ refreshAndReplaceInternal()

◆ replace()

◆ setLogger()

◆ transform()

◆ updateMessageOverride()

Member Data Documentation

◆ CONSTRUCTOR_OPTIONS

◆ MAX_REQUEST_LANGUAGES