43 parent::__construct(
'categoryMembershipChange',
$title,
$params );
46 $this->removeDuplicates =
true;
49 public function run() {
50 $lbFactory = MediaWikiServices::getInstance()->getDBLoadBalancerFactory();
51 $lb = $lbFactory->getMainLB();
54 $this->ticket = $lbFactory->getEmptyTransactionTicket( __METHOD__ );
58 $this->
setLastError(
"Could not find page #{$this->params['pageId']}" );
63 $lockKey =
"CategoryMembershipUpdates:{$page->getId()}";
64 $scopedLock = $dbw->getScopedLockAndFlush( $lockKey, __METHOD__, 3 );
66 $this->
setLastError(
"Could not acquire lock '$lockKey'" );
72 if ( !$lb->safeWaitForMasterPos(
$dbr ) ) {
73 $this->
setLastError(
"Timed out while waiting for replica DB to catch up" );
77 $dbr->flushSnapshot( __METHOD__ );
79 $cutoffUnix =
wfTimestamp( TS_UNIX, $this->params[
'revTimestamp'] );
85 $row =
$dbr->selectRow(
86 [
'revision',
'recentchanges' ],
87 [
'rev_timestamp',
'rev_id' ],
89 'rev_page' => $page->getId(),
90 'rev_timestamp >= ' .
$dbr->addQuotes(
$dbr->timestamp( $cutoffUnix ) )
93 [
'ORDER BY' =>
'rev_timestamp DESC, rev_id DESC' ],
98 'rc_this_oldid = rev_id',
101 'rc_cur_id = rev_page',
102 'rc_timestamp >= rev_timestamp'
109 $cutoffUnix =
wfTimestamp( TS_UNIX, $row->rev_timestamp );
110 $lastRevId = (int)$row->rev_id;
117 $encCutoff =
$dbr->addQuotes(
$dbr->timestamp( $cutoffUnix ) );
122 'rev_page' => $page->getId(),
123 "rev_timestamp > $encCutoff" .
124 " OR (rev_timestamp = $encCutoff AND rev_id > $lastRevId)"
127 [
'ORDER BY' =>
'rev_timestamp ASC, rev_id ASC' ]
131 foreach (
$res as $row ) {
158 if ( !$oldRev->getContent() ) {
167 list( $categoryInserts, $categoryDeletes ) = $categoryChanges;
168 if ( !$categoryInserts && !$categoryDeletes ) {
173 $catMembChange->checkTemplateLinks();
175 $batchSize = $config->get(
'UpdateRowsPerQuery' );
178 foreach ( $categoryInserts
as $categoryName ) {
179 $categoryTitle = Title::makeTitle(
NS_CATEGORY, $categoryName );
180 $catMembChange->triggerCategoryAddedNotification( $categoryTitle );
181 if ( $insertCount++ && ( $insertCount % $batchSize ) == 0 ) {
186 foreach ( $categoryDeletes
as $categoryName ) {
187 $categoryTitle = Title::makeTitle(
NS_CATEGORY, $categoryName );
188 $catMembChange->triggerCategoryRemovedNotification( $categoryTitle );
189 if ( $insertCount++ && ( $insertCount++ % $batchSize ) == 0 ) {
205 $oldCategories = $oldRev
211 $categoryInserts = array_values( array_diff( $newCategories, $oldCategories ) );
212 $categoryDeletes = array_values( array_diff( $oldCategories, $newCategories ) );
214 return [ $categoryInserts, $categoryDeletes ];
225 $content =
$rev->getContent();
226 $options = $content->getContentHandler()->makeParserOptions(
'canonical' );
227 $options->setTimestamp( $parseTimestamp );
234 return array_map(
'strval', array_keys(
$output->getCategories() ) );
238 $info = parent::getDeduplicationInfo();
239 unset( $info[
'params'][
'revTimestamp'] );
Apache License January AND DISTRIBUTION Definitions License shall mean the terms and conditions for use
wfTimestamp( $outputtype=TS_UNIX, $ts=0)
Get a timestamp string in one of various formats.
Job to add recent change entries mentioning category membership changes.
getExplicitCategoriesChanges(Title $title, Revision $newRev, Revision $oldRev=null)
__construct(Title $title, array $params)
getDeduplicationInfo()
Subclasses may need to override this to make duplication detection work.
notifyUpdatesForRevision(LBFactory $lbFactory, WikiPage $page, Revision $newRev)
getCategoriesAtRev(Title $title, Revision $rev, $parseTimestamp)
Class to both describe a background job and handle jobs.
array $params
Array of job parameters.
static getMain()
Static methods.
static selectFields()
Return the list of revision fields that should be selected to create a new revision.
getContent( $audience=self::FOR_PUBLIC, User $user=null)
Fetch revision content if it's available to the specified audience.
getParentId()
Get parent revision ID (the original previous page revision)
static newFromId( $id, $flags=0)
Load a page revision from a given revision ID number.
Represents a title within MediaWiki.
Class representing a MediaWiki article and history.
static newFromID( $id, $from='fromdb')
Constructor from a page id.
getTitle()
Get the title object of the article.
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injection txt This is an overview of how MediaWiki makes use of dependency injection The design described here grew from the discussion of RFC T384 The term dependency this means that anything an object needs to operate should be injected from the the object itself should only know narrow no concrete implementation of the logic it relies on The requirement to inject everything typically results in an architecture that based on two main types of and essentially stateless service objects that use other service objects to operate on the value objects As of the beginning MediaWiki is only starting to use the DI approach Much of the code still relies on global state or direct resulting in a highly cyclical dependency which acts as the top level factory for services in MediaWiki which can be used to gain access to default instances of various services MediaWikiServices however also allows new services to be defined and default services to be redefined Services are defined or redefined by providing a callback the instantiator that will return a new instance of the service When it will create an instance of MediaWikiServices and populate it with the services defined in the files listed by thereby bootstrapping the DI framework Per $wgServiceWiringFiles lists includes ServiceWiring php