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| 1 | <?php |
| 2 | |
| 3 | namespace MediaWiki\Maintenance; |
| 4 | |
| 5 | use Wikimedia\Rdbms\IExpression; |
| 6 | use Wikimedia\Rdbms\LikeValue; |
| 7 | use Wikimedia\Rdbms\SelectQueryBuilder; |
| 8 | |
| 9 | // @codeCoverageIgnoreStart |
| 10 | require_once __DIR__ . '/Maintenance.php'; |
| 11 | // @codeCoverageIgnoreEnd |
| 12 | |
| 13 | class FixAutoblockLogTitles extends LoggedUpdateMaintenance { |
| 14 | |
| 15 | public function __construct() { |
| 16 | parent::__construct(); |
| 17 | $this->addDescription( |
| 18 | 'Finds and fixes unblock log rows in the logging table where the log_title starts with the ' . |
| 19 | 'prefix "User:#". These rows are broken because the target is an autoblock and code expects the "#" ' . |
| 20 | 'character to be the first character in the title (T373929).' |
| 21 | ); |
| 22 | $this->setBatchSize( 200 ); |
| 23 | } |
| 24 | |
| 25 | protected function doDBUpdates() { |
| 26 | $this->output( "Fixing log entries with log_title starting with 'User:#'\n" ); |
| 27 | |
| 28 | $dbr = $this->getReplicaDB(); |
| 29 | $dbw = $this->getPrimaryDB(); |
| 30 | |
| 31 | $totalRowsFixed = 0; |
| 32 | $lastProcessedLogId = 0; |
| 33 | do { |
| 34 | // Get a batch of "unblock" log entries from the logging table. The check for the log_title being broken |
| 35 | // needs to be performed in batches, as it is expensive when run on the whole logging table on large wikis. |
| 36 | $logIds = $dbr->newSelectQueryBuilder() |
| 37 | ->select( 'log_id' ) |
| 38 | ->from( 'logging' ) |
| 39 | ->where( [ |
| 40 | 'log_type' => 'block', |
| 41 | 'log_action' => 'unblock', |
| 42 | $dbr->expr( 'log_id', '>', $lastProcessedLogId ), |
| 43 | ] ) |
| 44 | ->limit( $this->getBatchSize() ) |
| 45 | ->orderBy( 'log_id', SelectQueryBuilder::SORT_ASC ) |
| 46 | ->caller( __METHOD__ ) |
| 47 | ->fetchFieldValues(); |
| 48 | |
| 49 | if ( count( $logIds ) ) { |
| 50 | $lastId = end( $logIds ); |
| 51 | $firstId = reset( $logIds ); |
| 52 | $this->output( "...Processing unblock rows with IDs $firstId to $lastId\n" ); |
| 53 | |
| 54 | // Apply the LIKE query to find the rows with broken log_title values on the batch of log IDs. |
| 55 | // If any rows are found, then fix the log_title value. |
| 56 | $matchingRows = $dbr->newSelectQueryBuilder() |
| 57 | ->select( [ 'log_id', 'log_title' ] ) |
| 58 | ->from( 'logging' ) |
| 59 | ->where( $dbr->expr( |
| 60 | 'log_title', |
| 61 | IExpression::LIKE, |
| 62 | new LikeValue( 'User:#', $dbr->anyString() ) |
| 63 | ) ) |
| 64 | ->andWhere( [ 'log_id' => $logIds ] ) |
| 65 | ->limit( $this->getBatchSize() ) |
| 66 | ->caller( __METHOD__ ) |
| 67 | ->fetchResultSet(); |
| 68 | |
| 69 | foreach ( $matchingRows as $row ) { |
| 70 | $dbw->newUpdateQueryBuilder() |
| 71 | ->update( 'logging' ) |
| 72 | ->set( [ 'log_title' => substr( $row->log_title, strlen( 'User:' ) ) ] ) |
| 73 | ->where( [ 'log_id' => $row->log_id ] ) |
| 74 | ->caller( __METHOD__ ) |
| 75 | ->execute(); |
| 76 | $totalRowsFixed += $dbw->affectedRows(); |
| 77 | } |
| 78 | |
| 79 | $this->waitForReplication(); |
| 80 | } |
| 81 | |
| 82 | $lastProcessedLogId = end( $logIds ); |
| 83 | } while ( count( $logIds ) ); |
| 84 | |
| 85 | // Say we are done. Only output the total rows fixed if we found rows to fix, otherwise it may be confusing |
| 86 | // to see that no rows were fixed (and might imply that there are still rows to fix). |
| 87 | $this->output( "done." ); |
| 88 | if ( $totalRowsFixed ) { |
| 89 | $this->output( " Fixed $totalRowsFixed rows." ); |
| 90 | } |
| 91 | $this->output( "\n" ); |
| 92 | |
| 93 | return true; |
| 94 | } |
| 95 | |
| 96 | protected function getUpdateKey() { |
| 97 | return __CLASS__; |
| 98 | } |
| 99 | } |
| 100 | |
| 101 | // @codeCoverageIgnoreStart |
| 102 | $maintClass = FixAutoblockLogTitles::class; |
| 103 | require_once RUN_MAINTENANCE_IF_MAIN; |
| 104 | // @codeCoverageIgnoreEnd |