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| 1 | <?php |
| 2 | |
| 3 | namespace CirrusSearch\Job; |
| 4 | |
| 5 | use CirrusSearch\CirrusConfigNames; |
| 6 | use CirrusSearch\Updater; |
| 7 | use MediaWiki\MediaWikiServices; |
| 8 | use MediaWiki\Revision\RevisionRecord; |
| 9 | use MediaWiki\Title\Title; |
| 10 | |
| 11 | /** |
| 12 | * Performs the appropriate updates to Elasticsearch after a LinksUpdate is |
| 13 | * completed. The page itself is updated first then a second copy of this job |
| 14 | * is queued to update linked articles if any links change. The job can be |
| 15 | * 'prioritized' via the 'prioritize' parameter which will switch it to a |
| 16 | * different queue then the non-prioritized jobs. Prioritized jobs will never |
| 17 | * be deduplicated with non-prioritized jobs which is good because we can't |
| 18 | * control which job is removed during deduplication. In our case it'd only be |
| 19 | * ok to remove the non-prioritized version. |
| 20 | * |
| 21 | * @license GPL-2.0-or-later |
| 22 | */ |
| 23 | class LinksUpdate extends CirrusTitleJob { |
| 24 | /** |
| 25 | * param key to determine if the job should be "prioritized" |
| 26 | */ |
| 27 | private const PRIORITIZE = 'prioritize'; |
| 28 | |
| 29 | public function __construct( Title $title, array $params ) { |
| 30 | parent::__construct( $title, $params ); |
| 31 | |
| 32 | if ( $this->isPrioritized() ) { |
| 33 | $this->command .= 'Prioritized'; |
| 34 | } |
| 35 | // Note that we have to keep the prioritized param or else when the job |
| 36 | // is loaded it'll load under a different name/command/type which would |
| 37 | // be confusing. |
| 38 | } |
| 39 | |
| 40 | /** |
| 41 | * Prepare a page update for when this page is directly updated (new revision/delete/restore) |
| 42 | * |
| 43 | * @param Title $title |
| 44 | * @param RevisionRecord|null $revisionRecord |
| 45 | * @param array $params |
| 46 | * @return self |
| 47 | */ |
| 48 | public static function newPageChangeUpdate( Title $title, ?RevisionRecord $revisionRecord, array $params ): self { |
| 49 | $params += [ |
| 50 | self::PRIORITIZE => true, |
| 51 | ] + self::buildRootEventParams( self::PAGE_CHANGE, $revisionRecord ); |
| 52 | |
| 53 | return new self( $title, $params ); |
| 54 | } |
| 55 | |
| 56 | /** |
| 57 | * Prepare a cautionary update of a page that had some of its revision's visibility changed. |
| 58 | * (Theoretically not required because old revisions should not be part of the index) |
| 59 | */ |
| 60 | public static function newPastRevisionVisibilityChange( Title $title ): self { |
| 61 | $params = [ |
| 62 | self::PRIORITIZE => true, |
| 63 | ] + self::buildRootEventParams( self::VISIBILITY_CHANGE ); |
| 64 | |
| 65 | return new self( $title, $params ); |
| 66 | } |
| 67 | |
| 68 | /** |
| 69 | * Prepare a page update for when the rendered output of the page might have changed due to a |
| 70 | * change not directly related to this page (e.g. template update). |
| 71 | */ |
| 72 | public static function newPageRefreshUpdate( Title $title, array $params ): self { |
| 73 | $params += [ |
| 74 | self::PRIORITIZE => false, |
| 75 | ] + self::buildRootEventParams( self::PAGE_REFRESH ); |
| 76 | return new self( $title, $params ); |
| 77 | } |
| 78 | |
| 79 | /** |
| 80 | * New change emitted from the saneitizer |
| 81 | * @param Title $title |
| 82 | * @param string|null $cluster optional target cluster, null for all clusters |
| 83 | * @return self |
| 84 | */ |
| 85 | public static function newSaneitizerUpdate( Title $title, ?string $cluster ): self { |
| 86 | $params = [ |
| 87 | self::PRIORITIZE => false, |
| 88 | self::CLUSTER => $cluster, |
| 89 | ] + self::buildRootEventParams( self::SANEITIZER ); |
| 90 | return new self( $title, $params ); |
| 91 | } |
| 92 | |
| 93 | /** |
| 94 | * @return bool |
| 95 | */ |
| 96 | protected function doJob() { |
| 97 | $updater = Updater::build( $this->getSearchConfig(), $this->params['cluster'] ?? null ); |
| 98 | if ( $this->params[self::UPDATE_KIND] === self::SANEITIZER ) { |
| 99 | $this->saneitize( $updater ); |
| 100 | } else { |
| 101 | $this->update( $updater ); |
| 102 | } |
| 103 | |
| 104 | if ( $this->getSearchConfig()->get( CirrusConfigNames::EnableIncomingLinkCounting ) ) { |
| 105 | $this->queueIncomingLinksJobs(); |
| 106 | } |
| 107 | |
| 108 | return true; |
| 109 | } |
| 110 | |
| 111 | /** |
| 112 | * Indirection doing technically nothing but help measure the impact of these jobs via flame graphs. |
| 113 | * @param Updater $updater |
| 114 | * @return void |
| 115 | */ |
| 116 | private function saneitize( Updater $updater ): void { |
| 117 | $this->update( $updater ); |
| 118 | } |
| 119 | |
| 120 | private function update( Updater $updater ): void { |
| 121 | $updater->updateFromTitle( $this->title, $this->params[self::UPDATE_KIND], $this->params[self::ROOT_EVENT_TIME] ); |
| 122 | } |
| 123 | |
| 124 | /** |
| 125 | * Queue IncomingLinkCount jobs when pages are newly linked or unlinked |
| 126 | */ |
| 127 | private function queueIncomingLinksJobs() { |
| 128 | $titleKeys = array_merge( $this->params[ 'addedLinks' ] ?? [], |
| 129 | $this->params[ 'removedLinks' ] ?? [] ); |
| 130 | $refreshInterval = $this->getSearchConfig()->get( CirrusConfigNames::RefreshInterval ); |
| 131 | $jobs = []; |
| 132 | $jobQueue = MediaWikiServices::getInstance()->getJobQueueGroup(); |
| 133 | foreach ( $titleKeys as $titleKey ) { |
| 134 | $title = Title::newFromDBkey( $titleKey ); |
| 135 | if ( !$title || !$title->canExist() ) { |
| 136 | continue; |
| 137 | } |
| 138 | // If possible, delay the job execution by a few seconds so Elasticsearch |
| 139 | // can refresh to contain what we just sent it. The delay should be long |
| 140 | // enough for Elasticsearch to complete the refresh cycle, which normally |
| 141 | // takes wgCirrusSearchRefreshInterval seconds but we double it and add |
| 142 | // one just in case. |
| 143 | $delay = 2 * $refreshInterval + 1; |
| 144 | $jobs[] = new IncomingLinkCount( $title, [ |
| 145 | 'cluster' => $this->params['cluster'], |
| 146 | ] + self::buildJobDelayOptions( IncomingLinkCount::class, $delay, $jobQueue ) ); |
| 147 | } |
| 148 | $jobQueue->push( $jobs ); |
| 149 | } |
| 150 | |
| 151 | /** |
| 152 | * @return bool Is this job prioritized? |
| 153 | */ |
| 154 | public function isPrioritized() { |
| 155 | return isset( $this->params[self::PRIORITIZE] ) && $this->params[self::PRIORITIZE]; |
| 156 | } |
| 157 | } |