cleanupUsersWithNoId.php

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<?php
use MediaWiki\MediaWikiServices;
use Wikimedia\Rdbms\IDatabase;
 
require_once __DIR__ . '/Maintenance.php';
 
class CleanupUsersWithNoId extends LoggedUpdateMaintenance {
    private $prefix, $table, $assign;
    private $triedCreations = [];
 
    public function __construct() {
        parent::__construct();
        $this->addDescription( 'Cleans up tables that have valid usernames with no user ID' );
        $this->addOption( 'prefix', 'Interwiki prefix to apply to the usernames', true, true, 'p' );
        $this->addOption( 'table', 'Only clean up this table', false, true );
        $this->addOption( 'assign', 'Assign edits to existing local users if they exist', false, false );
        $this->setBatchSize( 100 );
    }
 
    protected function getUpdateKey() {
        return __CLASS__;
    }
 
    protected function doDBUpdates() {
        $this->prefix = $this->getOption( 'prefix' );
        $this->table = $this->getOption( 'table', null );
        $this->assign = $this->getOption( 'assign' );
 
        $this->cleanup(
            'revision', 'rev_id', 'rev_user', 'rev_user_text',
            [ 'rev_user' => 0 ], [ 'rev_timestamp', 'rev_id' ]
        );
        $this->cleanup(
            'archive', 'ar_id', 'ar_user', 'ar_user_text',
            [], [ 'ar_id' ]
        );
        $this->cleanup(
            'logging', 'log_id', 'log_user', 'log_user_text',
            [ 'log_user' => 0 ], [ 'log_timestamp', 'log_id' ]
        );
        $this->cleanup(
            'image', 'img_name', 'img_user', 'img_user_text',
            [ 'img_user' => 0 ], [ 'img_timestamp', 'img_name' ]
        );
        $this->cleanup(
            'oldimage', [ 'oi_name', 'oi_timestamp' ], 'oi_user', 'oi_user_text',
            [], [ 'oi_name', 'oi_timestamp' ]
        );
        $this->cleanup(
            'filearchive', 'fa_id', 'fa_user', 'fa_user_text',
            [], [ 'fa_id' ]
        );
        $this->cleanup(
            'ipblocks', 'ipb_id', 'ipb_by', 'ipb_by_text',
            [], [ 'ipb_id' ]
        );
        $this->cleanup(
            'recentchanges', 'rc_id', 'rc_user', 'rc_user_text',
            [], [ 'rc_id' ]
        );
 
        return true;
    }
 
    private function makeNextCond( $dbw, $indexFields, $row ) {
        $next = '';
        $display = [];
        for ( $i = count( $indexFields ) - 1; $i >= 0; $i-- ) {
            $field = $indexFields[$i];
            $display[] = $field . '=' . $row->$field;
            $value = $dbw->addQuotes( $row->$field );
            if ( $next === '' ) {
                $next = "$field > $value";
            } else {
                $next = "$field > $value OR $field = $value AND ($next)";
            }
        }
        $display = implode( ' ', array_reverse( $display ) );
        return [ $next, $display ];
    }
 
    protected function cleanup(
        $table, $primaryKey, $idField, $nameField, array $conds, array $orderby
    ) {
        if ( $this->table !== null && $this->table !== $table ) {
            return;
        }
 
        $dbw = $this->getDB( DB_MASTER );
        if ( !$dbw->fieldExists( $table, $idField, __METHOD__ ) ||
            !$dbw->fieldExists( $table, $nameField, __METHOD__ )
        ) {
            $this->output( "Skipping $table, fields $idField and/or $nameField do not exist\n" );
            return;
        }
 
        $primaryKey = (array)$primaryKey;
        $pkFilter = array_flip( $primaryKey );
        $this->output( "Beginning cleanup of $table\n" );
 
        $next = '1=1';
        $countAssigned = 0;
        $countPrefixed = 0;
        $lbFactory = MediaWikiServices::getInstance()->getDBLoadBalancerFactory();
        while ( true ) {
            // Fetch the rows needing update
            $res = $dbw->select(
                $table,
                array_merge( $primaryKey, [ $idField, $nameField ], $orderby ),
                array_merge( $conds, [ $next ] ),
                __METHOD__,
                [
                    'ORDER BY' => $orderby,
                    'LIMIT' => $this->mBatchSize,
                ]
            );
            if ( !$res->numRows() ) {
                break;
            }
 
            // Update the existing rows
            foreach ( $res as $row ) {
                $name = $row->$nameField;
                if ( $row->$idField || !User::isUsableName( $name ) ) {
                    continue;
                }
 
                $id = 0;
                if ( $this->assign ) {
                    $id = User::idFromName( $name );
                    if ( !$id ) {
                        // See if any extension wants to create it.
                        if ( !isset( $this->triedCreations[$name] ) ) {
                            $this->triedCreations[$name] = true;
                            if ( !$this->getHookRunner()->onImportHandleUnknownUser( $name ) ) {
                                $id = User::idFromName( $name, User::READ_LATEST );
                            }
                        }
                    }
                }
                if ( $id ) {
                    $set = [ $idField => $id ];
                    $counter = &$countAssigned;
                } else {
                    $set = [ $nameField => substr( $this->prefix . '>' . $name, 0, 255 ) ];
                    $counter = &$countPrefixed;
                }
 
                $dbw->update(
                    $table,
                    $set,
                    array_intersect_key( (array)$row, $pkFilter ) + [
                        $idField => 0,
                        $nameField => $name,
                    ],
                    __METHOD__
                );
                $counter += $dbw->affectedRows();
            }
 
            list( $next, $display ) = $this->makeNextCond( $dbw, $orderby, $row );
            $this->output( "... $display\n" );
            $lbFactory->waitForReplication();
        }
 
        $this->output(
            "Completed cleanup, assigned $countAssigned and prefixed $countPrefixed row(s)\n"
        );
    }
}
 
$maintClass = CleanupUsersWithNoId::class;
require_once RUN_MAINTENANCE_IF_MAIN;