wikimedia/mediawiki-core

<?php
/**
 * Init the user_editcount database field based on the number of rows in the
 * revision table.
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License along
 * with this program; if not, write to the Free Software Foundation, Inc.,
 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
 * http://www.gnu.org/copyleft/gpl.html
 *
 * @file
 * @ingroup Maintenance
 */

// @codeCoverageIgnoreStart
require_once __DIR__ . '/Maintenance.php';
// @codeCoverageIgnoreEnd

use MediaWiki\WikiMap\WikiMap;
use Wikimedia\Rdbms\IDatabase;
use Wikimedia\Rdbms\RawSQLValue;

class InitEditCount extends Maintenance {
    public function __construct() {
        parent::__construct();
        $this->addOption( 'quick', 'Force the update to be done in a single query' );
        $this->addOption( 'background', 'Force replication-friendly mode; may be inefficient but avoids'
        . 'locking tables or lagging replica DBs with large updates; calculates counts on a replica DB'
        . 'if possible. Background mode will be automatically used if multiple servers are listed in the'
        . 'load balancer, usually indicating a replication environment.' );
        $this->addDescription( 'Batch-recalculate user_editcount fields from the revision table' );
    }

    public function execute() {
        $dbw = $this->getPrimaryDB();

        // Autodetect mode...
        if ( $this->hasOption( 'background' ) ) {
            $backgroundMode = true;
        } elseif ( $this->hasOption( 'quick' ) ) {
            $backgroundMode = false;
        } else {
            $lb = $this->getServiceContainer()->getDBLoadBalancer();
            $backgroundMode = $lb->hasReplicaServers();
        }

        if ( $backgroundMode ) {
            $this->output( "Using replication-friendly background mode...\n" );

            $dbr = $this->getReplicaDB();
            $chunkSize = 100;
            $lastUser = $dbr->newSelectQueryBuilder()
                ->select( 'MAX(user_id)' )
                ->from( 'user' )
                ->caller( __METHOD__ )->fetchField();

            $start = microtime( true );
            $migrated = 0;
            for ( $min = 0; $min <= $lastUser; $min += $chunkSize ) {
                $max = $min + $chunkSize;

                $result = $dbr->newSelectQueryBuilder()
                    ->select( [ 'user_id', 'user_editcount' => "COUNT(actor_rev_user.actor_user)" ] )
                    ->from( 'user' )
                    ->leftJoin( 'revision', 'rev', "user_id = actor_rev_user.actor_user" )
                    ->join( 'actor', 'actor_rev_user', 'actor_rev_user.actor_id = rev_actor' )
                    ->where( $dbr->expr( 'user_id', '>', $min )->and( 'user_id', '<=', $max ) )
                    ->groupBy( 'user_id' )
                    ->caller( __METHOD__ )->fetchResultSet();

                foreach ( $result as $row ) {
                    $dbw->newUpdateQueryBuilder()
                        ->update( 'user' )
                        ->set( [ 'user_editcount' => $row->user_editcount ] )
                        ->where( [ 'user_id' => $row->user_id ] )
                        ->caller( __METHOD__ )->execute();
                    ++$migrated;
                }

                $delta = microtime( true ) - $start;
                $rate = ( $delta == 0.0 ) ? 0.0 : $migrated / $delta;
                $this->output( sprintf( "%s %d (%0.1f%%) done in %0.1f secs (%0.3f accounts/sec).\n",
                    WikiMap::getCurrentWikiDbDomain()->getId(),
                    $migrated,
                    min( $max, $lastUser ) / $lastUser * 100.0,
                    $delta,
                    $rate ) );

                $this->waitForReplication();
            }
        } else {
            $this->output( "Using single-query mode...\n" );

            $subquery = $dbw->newSelectQueryBuilder()
                ->select( 'COUNT(*)' )
                ->from( 'revision' )
                ->join( 'actor', 'actor_rev_user', 'actor_rev_user.actor_id = rev_actor' )
                ->where( 'user_id = actor_rev_user.actor_user' )
                ->caller( __METHOD__ )->getSQL();

            $dbw->newUpdateQueryBuilder()
                ->table( 'user' )
                ->set( [ 'user_editcount' => new RawSQLValue( "($subquery)" ) ] )
                ->where( IDatabase::ALL_ROWS )
                ->caller( __METHOD__ )
                ->execute();
        }

        $this->output( "Done!\n" );
    }
}

// @codeCoverageIgnoreStart
$maintClass = InitEditCount::class;
require_once RUN_MAINTENANCE_IF_MAIN;
// @codeCoverageIgnoreEnd