PurgeJobUtils.php

Go to the documentation of this file.

<?php
use Wikimedia\Rdbms\IDatabase;
use MediaWiki\MediaWikiServices;
 
class PurgeJobUtils {
    public static function invalidatePages( IDatabase $dbw, $namespace, array $dbkeys ) {
        if ( $dbkeys === [] ) {
            return;
        }
        $fname = __METHOD__;
 
        DeferredUpdates::addUpdate( new AutoCommitUpdate(
            $dbw,
            __METHOD__,
            function () use ( $dbw, $namespace, $dbkeys, $fname ) {
                $services = MediaWikiServices::getInstance();
                $lbFactory = $services->getDBLoadBalancerFactory();
                // Determine which pages need to be updated.
                // This is necessary to prevent the job queue from smashing the DB with
                // large numbers of concurrent invalidations of the same page.
                $now = $dbw->timestamp();
                $ids = $dbw->selectFieldValues(
                    'page',
                    'page_id',
                    [
                        'page_namespace' => $namespace,
                        'page_title' => $dbkeys,
                        'page_touched < ' . $dbw->addQuotes( $now )
                    ],
                    $fname
                );
 
                if ( !$ids ) {
                    return;
                }
 
                $batchSize = $services->getMainConfig()->get( 'UpdateRowsPerQuery' );
                $ticket = $lbFactory->getEmptyTransactionTicket( $fname );
                foreach ( array_chunk( $ids, $batchSize ) as $idBatch ) {
                    $dbw->update(
                        'page',
                        [ 'page_touched' => $now ],
                        [
                            'page_id' => $idBatch,
                            'page_touched < ' . $dbw->addQuotes( $now ) // handle races
                        ],
                        $fname
                    );
                    $lbFactory->commitAndWaitForReplication( $fname, $ticket );
                }
            }
        ) );
    }
}