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FixTrailingWhitespaceIds.php
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FixTrailingWhitespaceIds.php
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<?php
namespace MediaWiki\Extension\DiscussionTools\Maintenance;
use MediaWiki\Maintenance\LoggedUpdateMaintenance;
use Wikimedia\Rdbms\DBQueryError;
use Wikimedia\Rdbms\IExpression;
use Wikimedia\Rdbms\LikeValue;
$IP = getenv( 'MW_INSTALL_PATH' );
if ( $IP === false ) {
$IP = __DIR__ . '/../../..';
}
require_once "$IP/maintenance/Maintenance.php";
class FixTrailingWhitespaceIds extends LoggedUpdateMaintenance {
public function __construct() {
parent::__construct();
$this->addDescription( 'Fix comment IDs with trailing whitespace' );
$this->setBatchSize( 1000 );
$this->requireExtension( 'DiscussionTools' );
}
/**
* @inheritDoc
*/
public function doDBUpdates() {
$dbw = $this->getDB( DB_PRIMARY );
$this->output( "Fixing DiscussionTools IDs with trailing whitespace..\n" );
$total = 0;
$skippedIds = [];
do {
// Match things that are possibly heading IDs with trailing underscores,
// possibly followed by a timestamp.
// As we are using LIKE there's a small chance of false positives, but
// this will become no-ops as we use a stricter RegExp later.
// Trailing underscore
// _-%\_
$like1 = new LikeValue( $dbw->anyChar(), '-', $dbw->anyString(), '_' );
// Trailing underscore followed by short timestamp
// _-%\_-2%00
$like2 = new LikeValue( $dbw->anyChar(), '-', $dbw->anyString(), '_-2', $dbw->anyString(), '00' );
// Trailing underscore followed by long timestamp
// _-%\_-2%00.000Z
$like3 = new LikeValue( $dbw->anyChar(), '-', $dbw->anyString(), '_-2', $dbw->anyString(), '00.000Z' );
$itemIdQueryBuilder = $dbw->newSelectQueryBuilder()
->from( 'discussiontools_item_ids' )
->field( 'itid_itemid' )
->where(
$dbw->orExpr( [
$dbw->expr( 'itid_itemid', IExpression::LIKE, $like1 ),
$dbw->expr( 'itid_itemid', IExpression::LIKE, $like2 ),
$dbw->expr( 'itid_itemid', IExpression::LIKE, $like3 ),
] )
)
->caller( __METHOD__ )
->limit( $this->getBatchSize() );
if ( $skippedIds ) {
$itemIdQueryBuilder->where( $dbw->expr( 'itid_itemid', '!=', $skippedIds ) );
}
$itemIds = $itemIdQueryBuilder->fetchFieldValues();
if ( !$itemIds ) {
break;
}
foreach ( $itemIds as $itemId ) {
$fixedItemId = preg_replace(
'/^([hc]\-.*)_(\-([0-9]{14}|[0-9-]{10}T[0-9:]{6}00.000Z))?$/',
'$1$2',
$itemId
);
if ( $fixedItemId === $itemId ) {
// In the rare case we got a false positive from the LIKE, add this to a list of skipped IDs
// so we don't keep selecting it, and end up in an infinite loop
$skippedIds[] = $itemId;
continue;
}
try {
$dbw->newUpdateQueryBuilder()
->update( 'discussiontools_item_ids' )
->set( [ 'itid_itemid' => $fixedItemId ] )
->where( [ 'itid_itemid' => $itemId ] )
->caller( __METHOD__ )->execute();
} catch ( DBQueryError $err ) {
// Give up on updating in case of complex conflicts (T356196#9913698)
$this->output( "Failed to update $itemId\n" );
$skippedIds[] = $itemId;
continue;
}
$total += $dbw->affectedRows();
}
$this->waitForReplication();
$this->output( "$total\n" );
} while ( true );
$this->output( "Fixing DiscussionTools IDs with trailing whitespace: done.\n" );
return true;
}
/**
* @inheritDoc
*/
public function getUpdateKey() {
return 'DiscussionToolsFixTrailingWhitespaceIds';
}
}
$maintClass = FixTrailingWhitespaceIds::class;
require_once RUN_MAINTENANCE_IF_MAIN;

File Metadata

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text/x-php
Expires
Sat, May 16, 17:23 (9 h, 46 m)
Storage Engine
local-disk
Storage Format
Raw Data
Storage Handle
5c/91/8c1ddd77e06dc0e4006ef0caa825
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FixTrailingWhitespaceIds.php (3 KB)

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