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| 1 | <?php |
| 2 | |
| 3 | /** |
| 4 | * Remove a revision tag from edits and log entries it was applied to. |
| 5 | * @see bug T75181 |
| 6 | */ |
| 7 | |
| 8 | use MediaWiki\Parser\Sanitizer; |
| 9 | use MediaWiki\Storage\NameTableAccessException; |
| 10 | |
| 11 | require_once __DIR__ . '/Maintenance.php'; |
| 12 | |
| 13 | class DeleteTag extends Maintenance { |
| 14 | public function __construct() { |
| 15 | parent::__construct(); |
| 16 | $this->addDescription( 'Deletes a change tag' ); |
| 17 | $this->addArg( 'tag name', 'Name of the tag to delete' ); |
| 18 | $this->setBatchSize( 500 ); |
| 19 | } |
| 20 | |
| 21 | public function execute() { |
| 22 | $dbw = $this->getPrimaryDB(); |
| 23 | $services = $this->getServiceContainer(); |
| 24 | $defStore = $services->getChangeTagDefStore(); |
| 25 | |
| 26 | $tag = $this->getArg( 0 ); |
| 27 | try { |
| 28 | $tagId = $defStore->getId( $tag ); |
| 29 | } catch ( NameTableAccessException $ex ) { |
| 30 | $this->fatalError( "Tag '$tag' not found" ); |
| 31 | } |
| 32 | |
| 33 | $status = ChangeTags::canDeleteTag( $tag, null, ChangeTags::BYPASS_MAX_USAGE_CHECK ); |
| 34 | if ( !$status->isOK() ) { |
| 35 | $message = $status->getHTML( false, false, 'en' ); |
| 36 | $this->fatalError( Sanitizer::stripAllTags( $message ) ); |
| 37 | } |
| 38 | |
| 39 | $this->output( "Deleting tag '$tag'...\n" ); |
| 40 | |
| 41 | // Make the tag impossible to add by users while we're deleting it and drop the |
| 42 | // usage counter to zero |
| 43 | $dbw->newUpdateQueryBuilder() |
| 44 | ->update( 'change_tag_def' ) |
| 45 | ->set( [ |
| 46 | 'ctd_user_defined' => 0, |
| 47 | 'ctd_count' => 0, |
| 48 | ] ) |
| 49 | ->where( [ 'ctd_id' => $tagId ] ) |
| 50 | ->caller( __METHOD__ )->execute(); |
| 51 | ChangeTags::purgeTagCacheAll(); |
| 52 | |
| 53 | // Iterate over change_tag, deleting rows in batches |
| 54 | $count = 0; |
| 55 | do { |
| 56 | $ids = $dbw->newSelectQueryBuilder() |
| 57 | ->select( 'ct_id' ) |
| 58 | ->from( 'change_tag' ) |
| 59 | ->where( [ 'ct_tag_id' => $tagId ] ) |
| 60 | ->limit( $this->getBatchSize() ) |
| 61 | ->caller( __METHOD__ ) |
| 62 | ->fetchFieldValues(); |
| 63 | |
| 64 | if ( !$ids ) { |
| 65 | break; |
| 66 | } |
| 67 | $dbw->newDeleteQueryBuilder() |
| 68 | ->deleteFrom( 'change_tag' ) |
| 69 | ->where( [ 'ct_id' => $ids ] ) |
| 70 | ->caller( __METHOD__ )->execute(); |
| 71 | $count += $dbw->affectedRows(); |
| 72 | $this->output( "$count\n" ); |
| 73 | $this->waitForReplication(); |
| 74 | } while ( true ); |
| 75 | $this->output( "The tag has been removed from $count revisions, deleting the tag itself...\n" ); |
| 76 | |
| 77 | ChangeTags::deleteTagEverywhere( $tag ); |
| 78 | $this->output( "Done.\n" ); |
| 79 | } |
| 80 | } |
| 81 | |
| 82 | $maintClass = DeleteTag::class; |
| 83 | require_once RUN_MAINTENANCE_IF_MAIN; |