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| 1 | <?php |
| 2 | |
| 3 | use MediaWiki\Deferred\DeferrableUpdate; |
| 4 | use MediaWiki\MediaWikiServices; |
| 5 | use MediaWiki\Title\Title; |
| 6 | |
| 7 | /** |
| 8 | * Class containing cache update methods and job construction |
| 9 | * for the special case of purging pages due to dependencies |
| 10 | * contained only in the stable version of pages. |
| 11 | * |
| 12 | * These dependencies should be limited in number as most pages should |
| 13 | * have a stable version synced with the current version. |
| 14 | */ |
| 15 | class FRExtraCacheUpdate implements DeferrableUpdate { |
| 16 | /** @var Title */ |
| 17 | private $mTitle; |
| 18 | |
| 19 | /** @var int Copy of $wgUpdateRowsPerJob */ |
| 20 | private $mRowsPerJob; |
| 21 | /** @var int Copy of $wgUpdateRowsPerQuery */ |
| 22 | private $mRowsPerQuery; |
| 23 | |
| 24 | /** |
| 25 | * @param Title $titleTo |
| 26 | */ |
| 27 | public function __construct( Title $titleTo ) { |
| 28 | global $wgUpdateRowsPerJob, $wgUpdateRowsPerQuery; |
| 29 | $this->mTitle = $titleTo; |
| 30 | $this->mRowsPerJob = $wgUpdateRowsPerJob; |
| 31 | $this->mRowsPerQuery = $wgUpdateRowsPerQuery; |
| 32 | } |
| 33 | |
| 34 | /** |
| 35 | * @inheritDoc |
| 36 | */ |
| 37 | public function doUpdate() { |
| 38 | # Fetch the IDs |
| 39 | $dbr = MediaWikiServices::getInstance()->getConnectionProvider()->getReplicaDatabase(); |
| 40 | |
| 41 | $pageIds = $dbr->newSelectQueryBuilder() |
| 42 | ->select( 'ftr_from' ) |
| 43 | ->from( 'flaggedrevs_tracking' ) |
| 44 | ->where( $this->getToCondition() ) |
| 45 | ->caller( __METHOD__ ) |
| 46 | ->fetchFieldValues(); |
| 47 | # Check if there is anything to do... |
| 48 | if ( $pageIds ) { |
| 49 | # Do it right now? |
| 50 | if ( count( $pageIds ) <= $this->mRowsPerJob ) { |
| 51 | $this->invalidateIDs( $pageIds ); |
| 52 | # Defer to job queue... |
| 53 | } else { |
| 54 | $this->insertJobs( $pageIds ); |
| 55 | } |
| 56 | } |
| 57 | } |
| 58 | |
| 59 | /** |
| 60 | * @param int[] $pageIds |
| 61 | */ |
| 62 | private function insertJobs( array $pageIds ) { |
| 63 | if ( !$pageIds ) { |
| 64 | return; // sanity check |
| 65 | } |
| 66 | $jobs = []; |
| 67 | sort( $pageIds ); |
| 68 | $start = reset( $pageIds ); |
| 69 | foreach ( $pageIds as $i => $id ) { |
| 70 | $next = $pageIds[$i + 1] ?? null; |
| 71 | if ( !$next || $next > $id + 1 || $next - $start >= $this->mRowsPerJob ) { |
| 72 | $jobs[] = new FRExtraCacheUpdateJob( $this->mTitle, [ |
| 73 | 'type' => 'purge', |
| 74 | 'start' => $start, |
| 75 | 'end' => $id, |
| 76 | ] ); |
| 77 | $start = $next; |
| 78 | } |
| 79 | } |
| 80 | |
| 81 | MediaWikiServices::getInstance()->getJobQueueGroup()->push( $jobs ); |
| 82 | } |
| 83 | |
| 84 | /** |
| 85 | * @return array |
| 86 | */ |
| 87 | public function getToCondition() { |
| 88 | return [ |
| 89 | 'ftr_namespace' => $this->mTitle->getNamespace(), |
| 90 | 'ftr_title' => $this->mTitle->getDBkey(), |
| 91 | ]; |
| 92 | } |
| 93 | |
| 94 | /** |
| 95 | * Invalidate a set of IDs, right now |
| 96 | * @param int[] $pageIds |
| 97 | */ |
| 98 | public function invalidateIDs( array $pageIds ) { |
| 99 | if ( !$pageIds ) { |
| 100 | return; // sanity check |
| 101 | } |
| 102 | |
| 103 | $dbw = MediaWikiServices::getInstance()->getConnectionProvider()->getPrimaryDatabase(); |
| 104 | |
| 105 | $timestamp = $dbw->timestamp(); |
| 106 | |
| 107 | $hcu = MediaWikiServices::getInstance()->getHtmlCacheUpdater(); |
| 108 | |
| 109 | foreach ( array_chunk( $pageIds, $this->mRowsPerQuery ) as $ids ) { |
| 110 | # Update page_touched |
| 111 | $dbw->newUpdateQueryBuilder() |
| 112 | ->update( 'page' ) |
| 113 | ->set( [ 'page_touched' => $timestamp ] ) |
| 114 | ->where( [ 'page_id' => $ids ] ) |
| 115 | ->caller( __METHOD__ ) |
| 116 | ->execute(); |
| 117 | |
| 118 | # Update CDN |
| 119 | $titles = MediaWikiServices::getInstance() |
| 120 | ->getPageStore() |
| 121 | ->newSelectQueryBuilder() |
| 122 | ->wherePageIds( $ids ) |
| 123 | ->caller( __METHOD__ ) |
| 124 | ->fetchPageRecords(); |
| 125 | $hcu->purgeTitleUrls( $titles, $hcu::PURGE_INTENT_TXROUND_REFLECTED ); |
| 126 | } |
| 127 | } |
| 128 | } |