maintenance/storage/checkStorage.php

   1 <?php
   2 /**
   3  * Fsck for MediaWiki
   4  *
   5  * This program is free software; you can redistribute it and/or modify
   6  * it under the terms of the GNU General Public License as published by
   7  * the Free Software Foundation; either version 2 of the License, or
   8  * (at your option) any later version.
   9  *
  10  * This program is distributed in the hope that it will be useful,
  11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
  13  * GNU General Public License for more details.
  14  *
  15  * You should have received a copy of the GNU General Public License along
  16  * with this program; if not, write to the Free Software Foundation, Inc.,
  17  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
  18  * http://www.gnu.org/copyleft/gpl.html
  19  *
  20  * @file
  21  * @ingroup Maintenance ExternalStorage
  22  */
  23
  24 use MediaWiki\Permissions\UltimateAuthority;
  25 use MediaWiki\Shell\Shell;
  26 use MediaWiki\User\User;
  27
  28 // @codeCoverageIgnoreStart
  29 require_once __DIR__ . '/../Maintenance.php';
  30 // @codeCoverageIgnoreEnd
  31
  32 // ----------------------------------------------------------------------------------
  33
  34 /**
  35  * Maintenance script to do various checks on external storage.
  36  *
  37  * @fixme this should extend the base Maintenance class
  38  * @ingroup Maintenance ExternalStorage
  39  */
  40 class CheckStorage extends Maintenance {
  41         private const CONCAT_HEADER = 'O:27:"concatenatedgziphistoryblob"';
  42
  43         public array $oldIdMap;
  44         public array $errors;
  45
  46         /** @var ExternalStoreDB */
  47         public $dbStore = null;
  48
  49         public function __construct() {
  50                 parent::__construct();
  51
  52                 $this->addOption( 'fix', 'Fix errors if possible' );
  53                 $this->addArg( 'xml', 'Path to an XML dump', false );
  54         }
  55
  56         public function execute() {
  57                 $fix = $this->hasOption( 'fix' );
  58                 $xml = $this->getArg( 'xml', false );
  59                 $this->check( $fix, $xml );
  60         }
  61
  62         /** @var string[] */
  63         public $errorDescriptions = [
  64                 'restore text' => 'Damaged text, need to be restored from a backup',
  65                 'restore revision' => 'Damaged revision row, need to be restored from a backup',
  66                 'unfixable' => 'Unexpected errors with no automated fixing method',
  67                 'fixed' => 'Errors already fixed',
  68                 'fixable' => 'Errors which would already be fixed if --fix was specified',
  69         ];
  70
  71         public function check( $fix = false, $xml = '' ) {
  72                 $dbr = $this->getReplicaDB();
  73                 if ( $fix ) {
  74                         print "Checking, will fix errors if possible...\n";
  75                 } else {
  76                         print "Checking...\n";
  77                 }
  78                 $maxRevId = $dbr->newSelectQueryBuilder()
  79                         ->select( 'MAX(rev_id)' )
  80                         ->from( 'revision' )
  81                         ->caller( __METHOD__ )->fetchField();
  82                 $chunkSize = 1000;
  83                 $flagStats = [];
  84                 $objectStats = [];
  85                 $knownFlags = [ 'external', 'gzip', 'object', 'utf-8' ];
  86                 $this->errors = [
  87                         'restore text' => [],
  88                         'restore revision' => [],
  89                         'unfixable' => [],
  90                         'fixed' => [],
  91                         'fixable' => [],
  92                 ];
  93
  94                 for ( $chunkStart = 1; $chunkStart < $maxRevId; $chunkStart += $chunkSize ) {
  95                         $chunkEnd = $chunkStart + $chunkSize - 1;
  96                         // print "$chunkStart of $maxRevId\n";
  97
  98                         $this->oldIdMap = [];
  99                         $dbr->ping();
 100
 101                         // Fetch revision rows
 102                         $res = $dbr->newSelectQueryBuilder()
 103                                 ->select( [ 'slot_revision_id', 'content_address' ] )
 104                                 ->from( 'slots' )
 105                                 ->join( 'content', null, 'content_id = slot_content_id' )
 106                                 ->where( [
 107                                         $dbr->expr( 'slot_revision_id', '>=', $chunkStart ),
 108                                         $dbr->expr( 'slot_revision_id', '<=', $chunkEnd ),
 109                                 ] )
 110                                 ->caller( __METHOD__ )->fetchResultSet();
 111                         /** @var \MediaWiki\Storage\SqlBlobStore $blobStore */
 112                         $blobStore = $this->getServiceContainer()->getBlobStore();
 113                         '@phan-var \MediaWiki\Storage\SqlBlobStore $blobStore';
 114                         foreach ( $res as $row ) {
 115                                 $textId = $blobStore->getTextIdFromAddress( $row->content_address );
 116                                 if ( $textId ) {
 117                                         if ( !isset( $this->oldIdMap[$textId] ) ) {
 118                                                 $this->oldIdMap[ $textId ] = [ $row->slot_revision_id ];
 119                                         } elseif ( !in_array( $row->slot_revision_id, $this->oldIdMap[$textId] ) ) {
 120                                                 $this->oldIdMap[ $textId ][] = $row->slot_revision_id;
 121                                         }
 122                                 }
 123                         }
 124
 125                         if ( !count( $this->oldIdMap ) ) {
 126                                 continue;
 127                         }
 128
 129                         // Fetch old_flags
 130                         $missingTextRows = $this->oldIdMap;
 131                         $externalRevs = [];
 132                         $objectRevs = [];
 133                         $res = $dbr->newSelectQueryBuilder()
 134                                 ->select( [ 'old_id', 'old_flags' ] )
 135                                 ->from( 'text' )
 136                                 ->where( [ 'old_id' => array_keys( $this->oldIdMap ) ] )
 137                                 ->caller( __METHOD__ )->fetchResultSet();
 138                         foreach ( $res as $row ) {
 139                                 /**
 140                                  * @var int $flags
 141                                  */
 142                                 $flags = $row->old_flags;
 143                                 $id = $row->old_id;
 144
 145                                 // Create flagStats row if it doesn't exist
 146                                 $flagStats += [ $flags => 0 ];
 147                                 // Increment counter
 148                                 $flagStats[$flags]++;
 149
 150                                 // Not missing
 151                                 unset( $missingTextRows[$row->old_id] );
 152
 153                                 // Check for external or object
 154                                 if ( $flags == '' ) {
 155                                         $flagArray = [];
 156                                 } else {
 157                                         $flagArray = explode( ',', $flags );
 158                                 }
 159                                 if ( in_array( 'external', $flagArray ) ) {
 160                                         $externalRevs[] = $id;
 161                                 } elseif ( in_array( 'object', $flagArray ) ) {
 162                                         $objectRevs[] = $id;
 163                                 }
 164
 165                                 // Check for unrecognised flags
 166                                 if ( $flags == '0' ) {
 167                                         // This is a known bug from 2004
 168                                         // It's safe to just erase the old_flags field
 169                                         if ( $fix ) {
 170                                                 $this->addError( 'fixed', "Warning: old_flags set to 0", $id );
 171                                                 $dbw = $this->getPrimaryDB();
 172                                                 $dbw->ping();
 173                                                 $dbw->newUpdateQueryBuilder()
 174                                                         ->update( 'text' )
 175                                                         ->set( [ 'old_flags' => '' ] )
 176                                                         ->where( [ 'old_id' => $id ] )
 177                                                         ->caller( __METHOD__ )
 178                                                         ->execute();
 179                                                 echo "Fixed\n";
 180                                         } else {
 181                                                 $this->addError( 'fixable', "Warning: old_flags set to 0", $id );
 182                                         }
 183                                 } elseif ( count( array_diff( $flagArray, $knownFlags ) ) ) {
 184                                         $this->addError( 'unfixable', "Error: invalid flags field \"$flags\"", $id );
 185                                 }
 186                         }
 187
 188                         // Output errors for any missing text rows
 189                         foreach ( $missingTextRows as $oldId => $revIds ) {
 190                                 $this->addError( 'restore revision', "Error: missing text row", $oldId );
 191                         }
 192
 193                         // Verify external revisions
 194                         $externalConcatBlobs = [];
 195                         $externalNormalBlobs = [];
 196                         if ( count( $externalRevs ) ) {
 197                                 $res = $dbr->newSelectQueryBuilder()
 198                                         ->select( [ 'old_id', 'old_flags', 'old_text' ] )
 199                                         ->from( 'text' )
 200                                         ->where( [ 'old_id' => $externalRevs ] )
 201                                         ->caller( __METHOD__ )->fetchResultSet();
 202                                 foreach ( $res as $row ) {
 203                                         $urlParts = explode( '://', $row->old_text, 2 );
 204                                         if ( count( $urlParts ) !== 2 || $urlParts[1] == '' ) {
 205                                                 $this->addError( 'restore text', "Error: invalid URL \"{$row->old_text}\"", $row->old_id );
 206                                                 continue;
 207                                         }
 208                                         [ $proto, ] = $urlParts;
 209                                         if ( $proto != 'DB' ) {
 210                                                 $this->addError(
 211                                                         'restore text',
 212                                                         "Error: invalid external protocol \"$proto\"",
 213                                                         $row->old_id );
 214                                                 continue;
 215                                         }
 216                                         $path = explode( '/', $row->old_text );
 217                                         $cluster = $path[2];
 218                                         $id = $path[3];
 219                                         if ( isset( $path[4] ) ) {
 220                                                 $externalConcatBlobs[$cluster][$id][] = $row->old_id;
 221                                         } else {
 222                                                 $externalNormalBlobs[$cluster][$id][] = $row->old_id;
 223                                         }
 224                                 }
 225                         }
 226
 227                         // Check external concat blobs for the right header
 228                         $this->checkExternalConcatBlobs( $externalConcatBlobs );
 229
 230                         // Check external normal blobs for existence
 231                         if ( count( $externalNormalBlobs ) ) {
 232                                 if ( $this->dbStore === null ) {
 233                                         $esFactory = $this->getServiceContainer()->getExternalStoreFactory();
 234                                         $this->dbStore = $esFactory->getStore( 'DB' );
 235                                 }
 236                                 foreach ( $externalConcatBlobs as $cluster => $xBlobIds ) {
 237                                         $blobIds = array_keys( $xBlobIds );
 238                                         $extDb = $this->dbStore->getReplica( $cluster );
 239                                         $blobsTable = $this->dbStore->getTable( $cluster );
 240                                         $res = $extDb->newSelectQueryBuilder()
 241                                                 ->select( [ 'blob_id' ] )
 242                                                 ->from( $blobsTable )
 243                                                 ->where( [ 'blob_id' => $blobIds ] )
 244                                                 ->caller( __METHOD__ )->fetchResultSet();
 245                                         foreach ( $res as $row ) {
 246                                                 unset( $xBlobIds[$row->blob_id] );
 247                                         }
 248                                         // Print errors for missing blobs rows
 249                                         foreach ( $xBlobIds as $blobId => $oldId ) {
 250                                                 $this->addError(
 251                                                         'restore text',
 252                                                         "Error: missing target $blobId for one-part ES URL",
 253                                                         $oldId );
 254                                         }
 255                                 }
 256                         }
 257
 258                         // Check local objects
 259                         $dbr->ping();
 260                         $concatBlobs = [];
 261                         $curIds = [];
 262                         if ( count( $objectRevs ) ) {
 263                                 $headerLength = 300;
 264                                 $res = $dbr->newSelectQueryBuilder()
 265                                         ->select( [ 'old_id', 'old_flags', "LEFT(old_text, $headerLength) AS header" ] )
 266                                         ->from( 'text' )
 267                                         ->where( [ 'old_id' => $objectRevs ] )
 268                                         ->caller( __METHOD__ )->fetchResultSet();
 269                                 foreach ( $res as $row ) {
 270                                         $oldId = $row->old_id;
 271                                         $matches = [];
 272                                         if ( !preg_match( '/^O:(\d+):"(\w+)"/', $row->header, $matches ) ) {
 273                                                 $this->addError( 'restore text', "Error: invalid object header", $oldId );
 274                                                 continue;
 275                                         }
 276
 277                                         $className = strtolower( $matches[2] );
 278                                         if ( strlen( $className ) != $matches[1] ) {
 279                                                 $this->addError(
 280                                                         'restore text',
 281                                                         "Error: invalid object header, wrong class name length",
 282                                                         $oldId
 283                                                 );
 284                                                 continue;
 285                                         }
 286
 287                                         $objectStats += [ $className => 0 ];
 288                                         $objectStats[$className]++;
 289
 290                                         switch ( $className ) {
 291                                                 case 'concatenatedgziphistoryblob':
 292                                                         // Good
 293                                                         break;
 294                                                 case 'historyblobstub':
 295                                                 case 'historyblobcurstub':
 296                                                         if ( strlen( $row->header ) == $headerLength ) {
 297                                                                 $this->addError( 'unfixable', "Error: overlong stub header", $oldId );
 298                                                                 break;
 299                                                         }
 300                                                         $stubObj = unserialize( $row->header );
 301                                                         if ( !is_object( $stubObj ) ) {
 302                                                                 $this->addError( 'restore text', "Error: unable to unserialize stub object", $oldId );
 303                                                                 break;
 304                                                         }
 305                                                         if ( $className == 'historyblobstub' ) {
 306                                                                 $concatBlobs[$stubObj->getLocation()][] = $oldId;
 307                                                         } else {
 308                                                                 $curIds[$stubObj->mCurId][] = $oldId;
 309                                                         }
 310                                                         break;
 311                                                 default:
 312                                                         $this->addError( 'unfixable', "Error: unrecognised object class \"$className\"", $oldId );
 313                                         }
 314                                 }
 315                         }
 316
 317                         // Check local concat blob validity
 318                         $externalConcatBlobs = [];
 319                         if ( count( $concatBlobs ) ) {
 320                                 $headerLength = 300;
 321                                 $res = $dbr->newSelectQueryBuilder()
 322                                         ->select( [ 'old_id', 'old_flags', "LEFT(old_text, $headerLength) AS header" ] )
 323                                         ->from( 'text' )
 324                                         ->where( [ 'old_id' => array_keys( $concatBlobs ) ] )
 325                                         ->caller( __METHOD__ )->fetchResultSet();
 326                                 foreach ( $res as $row ) {
 327                                         $flags = explode( ',', $row->old_flags );
 328                                         if ( in_array( 'external', $flags ) ) {
 329                                                 // Concat blob is in external storage?
 330                                                 if ( in_array( 'object', $flags ) ) {
 331                                                         $urlParts = explode( '/', $row->header );
 332                                                         if ( $urlParts[0] != 'DB:' ) {
 333                                                                 $this->addError(
 334                                                                         'unfixable',
 335                                                                         "Error: unrecognised external storage type \"{$urlParts[0]}",
 336                                                                         $row->old_id
 337                                                                 );
 338                                                         } else {
 339                                                                 $cluster = $urlParts[2];
 340                                                                 $id = $urlParts[3];
 341                                                                 if ( !isset( $externalConcatBlobs[$cluster][$id] ) ) {
 342                                                                         $externalConcatBlobs[$cluster][$id] = [];
 343                                                                 }
 344                                                                 $externalConcatBlobs[$cluster][$id] = array_merge(
 345                                                                         $externalConcatBlobs[$cluster][$id], $concatBlobs[$row->old_id]
 346                                                                 );
 347                                                         }
 348                                                 } else {
 349                                                         $this->addError(
 350                                                                 'unfixable',
 351                                                                 "Error: invalid flags \"{$row->old_flags}\" on concat bulk row {$row->old_id}",
 352                                                                 $concatBlobs[$row->old_id] );
 353                                                 }
 354                                         } elseif ( strcasecmp(
 355                                                 substr( $row->header, 0, strlen( self::CONCAT_HEADER ) ),
 356                                                 self::CONCAT_HEADER
 357                                         ) ) {
 358                                                 $this->addError(
 359                                                         'restore text',
 360                                                         "Error: Incorrect object header for concat bulk row {$row->old_id}",
 361                                                         $concatBlobs[$row->old_id]
 362                                                 );
 363                                         }
 364
 365                                         unset( $concatBlobs[$row->old_id] );
 366                                 }
 367                         }
 368
 369                         // Check targets of unresolved stubs
 370                         $this->checkExternalConcatBlobs( $externalConcatBlobs );
 371                         // next chunk
 372                 }
 373
 374                 print "\n\nErrors:\n";
 375                 foreach ( $this->errors as $name => $errors ) {
 376                         if ( count( $errors ) ) {
 377                                 $description = $this->errorDescriptions[$name];
 378                                 echo "$description: " . implode( ',', array_keys( $errors ) ) . "\n";
 379                         }
 380                 }
 381
 382                 if ( count( $this->errors['restore text'] ) && $fix ) {
 383                         if ( (string)$xml !== '' ) {
 384                                 $this->restoreText( array_keys( $this->errors['restore text'] ), $xml );
 385                         } else {
 386                                 echo "Can't fix text, no XML backup specified\n";
 387                         }
 388                 }
 389
 390                 print "\nFlag statistics:\n";
 391                 $total = array_sum( $flagStats );
 392                 foreach ( $flagStats as $flag => $count ) {
 393                         printf( "%-30s %10d %5.2f%%\n", $flag, $count, $count / $total * 100 );
 394                 }
 395                 print "\nLocal object statistics:\n";
 396                 $total = array_sum( $objectStats );
 397                 foreach ( $objectStats as $className => $count ) {
 398                         printf( "%-30s %10d %5.2f%%\n", $className, $count, $count / $total * 100 );
 399                 }
 400         }
 401
 402         private function addError( $type, $msg, $ids ) {
 403                 if ( is_array( $ids ) && count( $ids ) == 1 ) {
 404                         $ids = reset( $ids );
 405                 }
 406                 if ( is_array( $ids ) ) {
 407                         $revIds = [];
 408                         foreach ( $ids as $id ) {
 409                                 $revIds = array_unique( array_merge( $revIds, $this->oldIdMap[$id] ) );
 410                         }
 411                         print "$msg in text rows " . implode( ', ', $ids ) .
 412                                 ", revisions " . implode( ', ', $revIds ) . "\n";
 413                 } else {
 414                         $id = $ids;
 415                         $revIds = $this->oldIdMap[$id];
 416                         if ( count( $revIds ) == 1 ) {
 417                                 print "$msg in old_id $id, rev_id {$revIds[0]}\n";
 418                         } else {
 419                                 print "$msg in old_id $id, revisions " . implode( ', ', $revIds ) . "\n";
 420                         }
 421                 }
 422                 $this->errors[$type] += array_fill_keys( $revIds, true );
 423         }
 424
 425         private function checkExternalConcatBlobs( $externalConcatBlobs ) {
 426                 if ( !count( $externalConcatBlobs ) ) {
 427                         return;
 428                 }
 429
 430                 if ( $this->dbStore === null ) {
 431                         $esFactory = $this->getServiceContainer()->getExternalStoreFactory();
 432                         $this->dbStore = $esFactory->getStore( 'DB' );
 433                 }
 434
 435                 foreach ( $externalConcatBlobs as $cluster => $oldIds ) {
 436                         $blobIds = array_keys( $oldIds );
 437                         $extDb = $this->dbStore->getReplica( $cluster );
 438                         $blobsTable = $this->dbStore->getTable( $cluster );
 439                         $headerLength = strlen( self::CONCAT_HEADER );
 440                         $res = $extDb->newSelectQueryBuilder()
 441                                 ->select( [ 'blob_id', "LEFT(blob_text, $headerLength) AS header" ] )
 442                                 ->from( $blobsTable )
 443                                 ->where( [ 'blob_id' => $blobIds ] )
 444                                 ->caller( __METHOD__ )->fetchResultSet();
 445                         foreach ( $res as $row ) {
 446                                 if ( strcasecmp( $row->header, self::CONCAT_HEADER ) ) {
 447                                         $this->addError(
 448                                                 'restore text',
 449                                                 "Error: invalid header on target $cluster/{$row->blob_id} of two-part ES URL",
 450                                                 $oldIds[$row->blob_id]
 451                                         );
 452                                 }
 453                                 unset( $oldIds[$row->blob_id] );
 454                         }
 455
 456                         // Print errors for missing blobs rows
 457                         foreach ( $oldIds as $blobId => $oldIds2 ) {
 458                                 $this->addError(
 459                                         'restore text',
 460                                         "Error: missing target $cluster/$blobId for two-part ES URL",
 461                                         $oldIds2
 462                                 );
 463                         }
 464                 }
 465         }
 466
 467         private function restoreText( $revIds, $xml ) {
 468                 global $wgDBname;
 469                 $tmpDir = wfTempDir();
 470
 471                 if ( !count( $revIds ) ) {
 472                         return;
 473                 }
 474
 475                 print "Restoring text from XML backup...\n";
 476
 477                 $revFileName = "$tmpDir/broken-revlist-$wgDBname";
 478                 $filteredXmlFileName = "$tmpDir/filtered-$wgDBname.xml";
 479
 480                 // Write revision list
 481                 if ( !file_put_contents( $revFileName, implode( "\n", $revIds ) ) ) {
 482                         echo "Error writing revision list, can't restore text\n";
 483
 484                         return;
 485                 }
 486
 487                 // Run mwdumper
 488                 echo "Filtering XML dump...\n";
 489                 $exitStatus = 0;
 490                 // phpcs:ignore MediaWiki.Usage.ForbiddenFunctions.passthru
 491                 passthru( 'mwdumper ' .
 492                         Shell::escape(
 493                                 "--output=file:$filteredXmlFileName",
 494                                 "--filter=revlist:$revFileName",
 495                                 $xml
 496                         ), $exitStatus
 497                 );
 498
 499                 if ( $exitStatus ) {
 500                         echo "mwdumper died with exit status $exitStatus\n";
 501
 502                         return;
 503                 }
 504
 505                 $file = fopen( $filteredXmlFileName, 'r' );
 506                 if ( !$file ) {
 507                         echo "Unable to open filtered XML file\n";
 508
 509                         return;
 510                 }
 511
 512                 $dbr = $this->getReplicaDB();
 513                 $dbw = $this->getPrimaryDB();
 514                 $dbr->ping();
 515                 $dbw->ping();
 516
 517                 $source = new ImportStreamSource( $file );
 518                 $user = User::newSystemUser( User::MAINTENANCE_SCRIPT_USER, [ 'steal' => true ] );
 519                 $importer = $this->getServiceContainer()
 520                         ->getWikiImporterFactory()
 521                         ->getWikiImporter( $source, new UltimateAuthority( $user ) );
 522                 $importer->setRevisionCallback( [ $this, 'importRevision' ] );
 523                 $importer->setNoticeCallback( static function ( $msg, $params ) {
 524                         echo wfMessage( $msg, $params )->text() . "\n";
 525                 } );
 526                 $importer->doImport();
 527         }
 528
 529         /**
 530          * @param WikiRevision $revision
 531          */
 532         public function importRevision( $revision ) {
 533                 $id = $revision->getID();
 534                 $content = $revision->getContent();
 535                 $id = $id ?: '';
 536
 537                 if ( $content === null ) {
 538                         echo "Revision $id is broken, we have no content available\n";
 539
 540                         return;
 541                 }
 542
 543                 $text = $content->serialize();
 544                 if ( $text === '' ) {
 545                         // This is what happens if the revision was broken at the time the
 546                         // dump was made. Unfortunately, it also happens if the revision was
 547                         // legitimately blank, so there's no way to tell the difference. To
 548                         // be safe, we'll skip it and leave it broken
 549
 550                         echo "Revision $id is blank in the dump, may have been broken before export\n";
 551
 552                         return;
 553                 }
 554
 555                 if ( !$id ) {
 556                         // No ID, can't import
 557                         echo "No id tag in revision, can't import\n";
 558
 559                         return;
 560                 }
 561
 562                 // Find text row again
 563                 $dbr = $this->getReplicaDB();
 564                 $res = $dbr->newSelectQueryBuilder()
 565                         ->select( [ 'content_address' ] )
 566                         ->from( 'slots' )
 567                         ->join( 'content', null, 'content_id = slot_content_id' )
 568                         ->where( [ 'slot_revision_id' => $id ] )
 569                         ->caller( __METHOD__ )->fetchRow();
 570
 571                 $blobStore = $this->getServiceContainer()
 572                         ->getBlobStoreFactory()
 573                         ->newSqlBlobStore();
 574                 $oldId = $blobStore->getTextIdFromAddress( $res->content_address );
 575
 576                 if ( !$oldId ) {
 577                         echo "Missing revision row for rev_id $id\n";
 578                         return;
 579                 }
 580
 581                 // Compress the text
 582                 $flags = $blobStore->compressData( $text );
 583
 584                 // Update the text row
 585                 $dbw = $this->getPrimaryDB();
 586                 $dbw->newUpdateQueryBuilder()
 587                         ->update( 'text' )
 588                         ->set( [ 'old_flags' => $flags, 'old_text' => $text ] )
 589                         ->where( [ 'old_id' => $oldId ] )
 590                         ->caller( __METHOD__ )
 591                         ->execute();
 592
 593                 // Remove it from the unfixed list and add it to the fixed list
 594                 unset( $this->errors['restore text'][$id] );
 595                 $this->errors['fixed'][$id] = true;
 596         }
 597
 598 }
 599
 600 // @codeCoverageIgnoreStart
 601 $maintClass = CheckStorage::class;
 602 require_once RUN_MAINTENANCE_IF_MAIN;
 603 // @codeCoverageIgnoreEnd