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| 1 | <?php |
| 2 | |
| 3 | namespace MediaWiki\Extension\DiscussionTools\Maintenance; |
| 4 | |
| 5 | use LoggedUpdateMaintenance; |
| 6 | use Wikimedia\Rdbms\DBQueryError; |
| 7 | use Wikimedia\Rdbms\IExpression; |
| 8 | use Wikimedia\Rdbms\LikeValue; |
| 9 | |
| 10 | $IP = getenv( 'MW_INSTALL_PATH' ); |
| 11 | if ( $IP === false ) { |
| 12 | $IP = __DIR__ . '/../../..'; |
| 13 | } |
| 14 | require_once "$IP/maintenance/Maintenance.php"; |
| 15 | |
| 16 | class FixTrailingWhitespaceIds extends LoggedUpdateMaintenance { |
| 17 | |
| 18 | public function __construct() { |
| 19 | parent::__construct(); |
| 20 | $this->addDescription( 'Fix comment IDs with trailing whitespace' ); |
| 21 | $this->setBatchSize( 1000 ); |
| 22 | $this->requireExtension( 'DiscussionTools' ); |
| 23 | } |
| 24 | |
| 25 | /** |
| 26 | * @inheritDoc |
| 27 | */ |
| 28 | public function doDBUpdates() { |
| 29 | $dbw = $this->getDB( DB_PRIMARY ); |
| 30 | |
| 31 | $this->output( "Fixing DiscussionTools IDs with trailing whitespace..\n" ); |
| 32 | $total = 0; |
| 33 | |
| 34 | $skippedIds = []; |
| 35 | |
| 36 | do { |
| 37 | // Match things that are possibly heading IDs with trailing underscores, |
| 38 | // possibly followed by a timestamp. |
| 39 | // As we are using LIKE there's a small chance of false positives, but |
| 40 | // this will become no-ops as we use a stricter RegExp later. |
| 41 | |
| 42 | // Trailing underscore |
| 43 | // _-%\_ |
| 44 | $like1 = new LikeValue( $dbw->anyChar(), '-', $dbw->anyString(), '_' ); |
| 45 | // Trailing underscore followed by short timestamp |
| 46 | // _-%\_-2%00 |
| 47 | $like2 = new LikeValue( $dbw->anyChar(), '-', $dbw->anyString(), '_-2', $dbw->anyString(), '00' ); |
| 48 | // Trailing underscore followed by long timestamp |
| 49 | // _-%\_-2%00.000Z |
| 50 | $like3 = new LikeValue( $dbw->anyChar(), '-', $dbw->anyString(), '_-2', $dbw->anyString(), '00.000Z' ); |
| 51 | |
| 52 | $itemIdQueryBuilder = $dbw->newSelectQueryBuilder() |
| 53 | ->from( 'discussiontools_item_ids' ) |
| 54 | ->field( 'itid_itemid' ) |
| 55 | ->where( |
| 56 | $dbw->orExpr( [ |
| 57 | $dbw->expr( 'itid_itemid', IExpression::LIKE, $like1 ), |
| 58 | $dbw->expr( 'itid_itemid', IExpression::LIKE, $like2 ), |
| 59 | $dbw->expr( 'itid_itemid', IExpression::LIKE, $like3 ), |
| 60 | ] ) |
| 61 | ) |
| 62 | ->caller( __METHOD__ ) |
| 63 | ->limit( $this->getBatchSize() ); |
| 64 | |
| 65 | if ( $skippedIds ) { |
| 66 | $itemIdQueryBuilder->where( $dbw->expr( 'itid_itemid', '!=', $skippedIds ) ); |
| 67 | } |
| 68 | |
| 69 | $itemIds = $itemIdQueryBuilder->fetchFieldValues(); |
| 70 | |
| 71 | if ( !$itemIds ) { |
| 72 | break; |
| 73 | } |
| 74 | |
| 75 | foreach ( $itemIds as $itemId ) { |
| 76 | $fixedItemId = preg_replace( |
| 77 | '/^([hc]\-.*)_(\-([0-9]{14}|[0-9-]{10}T[0-9:]{6}00.000Z))?$/', |
| 78 | '$1$2', |
| 79 | $itemId |
| 80 | ); |
| 81 | if ( $fixedItemId === $itemId ) { |
| 82 | // In the rare case we got a false positive from the LIKE, add this to a list of skipped IDs |
| 83 | // so we don't keep selecting it, and end up in an infinite loop |
| 84 | $skippedIds[] = $itemId; |
| 85 | continue; |
| 86 | } |
| 87 | try { |
| 88 | $dbw->newUpdateQueryBuilder() |
| 89 | ->update( 'discussiontools_item_ids' ) |
| 90 | ->set( [ 'itid_itemid' => $fixedItemId ] ) |
| 91 | ->where( [ 'itid_itemid' => $itemId ] ) |
| 92 | ->caller( __METHOD__ )->execute(); |
| 93 | } catch ( DBQueryError $err ) { |
| 94 | // Give up on updating in case of complex conflicts (T356196#9913698) |
| 95 | $this->output( "Failed to update $itemId\n" ); |
| 96 | $skippedIds[] = $itemId; |
| 97 | continue; |
| 98 | } |
| 99 | |
| 100 | $total += $dbw->affectedRows(); |
| 101 | } |
| 102 | |
| 103 | $this->waitForReplication(); |
| 104 | $this->output( "$total\n" ); |
| 105 | } while ( true ); |
| 106 | |
| 107 | $this->output( "Fixing DiscussionTools IDs with trailing whitespace: done.\n" ); |
| 108 | |
| 109 | return true; |
| 110 | } |
| 111 | |
| 112 | /** |
| 113 | * @inheritDoc |
| 114 | */ |
| 115 | public function getUpdateKey() { |
| 116 | return 'DiscussionToolsFixTrailingWhitespaceIds'; |
| 117 | } |
| 118 | } |
| 119 | |
| 120 | $maintClass = FixTrailingWhitespaceIds::class; |
| 121 | require_once RUN_MAINTENANCE_IF_MAIN; |