populateIpChanges.php

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<?php
require_once __DIR__ . '/Maintenance.php';
 
use MediaWiki\MediaWikiServices;
 
class PopulateIpChanges extends LoggedUpdateMaintenance {
    public function __construct() {
        parent::__construct();
 
        $this->addDescription( <<<TEXT
This script will find all rows in the revision table where the user is an IP,
and copy relevant fields to the ip_changes table. This backfilled data will
then be available when querying for IP ranges at Special:Contributions.
TEXT
        );
        $this->addOption( 'rev-id', 'The rev_id to start copying from. Default: 0', false, true );
        $this->addOption(
            'max-rev-id',
            'The rev_id to stop at. Default: result of MAX(rev_id)',
            false,
            true
        );
        $this->addOption(
            'throttle',
            'Wait this many milliseconds after copying each batch of revisions. Default: 0',
            false,
            true
        );
        $this->addOption( 'force', 'Run regardless of whether the database says it\'s been run already' );
    }
 
    public function doDBUpdates() {
        $dbw = $this->getDB( DB_MASTER );
 
        if ( !$dbw->tableExists( 'ip_changes' ) ) {
            $this->fatalError( 'ip_changes table does not exist' );
        }
 
        $lbFactory = MediaWikiServices::getInstance()->getDBLoadBalancerFactory();
        $dbr = $this->getDB( DB_REPLICA, [ 'vslow' ] );
        $throttle = intval( $this->getOption( 'throttle', 0 ) );
        $maxRevId = intval( $this->getOption( 'max-rev-id', 0 ) );
        $start = $this->getOption( 'rev-id', 0 );
        $end = $maxRevId > 0
            ? $maxRevId
            : $dbw->selectField( 'revision', 'MAX(rev_id)', '', __METHOD__ );
 
        if ( empty( $end ) ) {
            $this->output( "No revisions found, aborting.\n" );
            return true;
        }
 
        $blockStart = $start;
        $attempted = 0;
        $inserted = 0;
 
        $this->output( "Copying IP revisions to ip_changes, from rev_id $start to rev_id $end\n" );
 
        $actorMigration = ActorMigration::newMigration();
        $actorQuery = $actorMigration->getJoin( 'rev_user' );
        $revUserIsAnon = $actorMigration->isAnon( $actorQuery['fields']['rev_user'] );
 
        while ( $blockStart <= $end ) {
            $blockEnd = min( $blockStart + $this->getBatchSize(), $end );
            $rows = $dbr->select(
                [ 'revision' ] + $actorQuery['tables'],
                [ 'rev_id', 'rev_timestamp', 'rev_user_text' => $actorQuery['fields']['rev_user_text'] ],
                [ "rev_id BETWEEN " . (int)$blockStart . " AND " . (int)$blockEnd, $revUserIsAnon ],
                __METHOD__,
                [],
                $actorQuery['joins']
            );
 
            $numRows = $rows->numRows();
 
            if ( !$rows || $numRows === 0 ) {
                $blockStart = $blockEnd + 1;
                continue;
            }
 
            $this->output( "...checking $numRows revisions for IP edits that need copying, " .
                "between rev_ids $blockStart and $blockEnd\n" );
 
            $insertRows = [];
            foreach ( $rows as $row ) {
                // Make sure this is really an IP, e.g. not maintenance user or imported revision.
                if ( IP::isValid( $row->rev_user_text ) ) {
                    $insertRows[] = [
                        'ipc_rev_id' => $row->rev_id,
                        'ipc_rev_timestamp' => $row->rev_timestamp,
                        'ipc_hex' => IP::toHex( $row->rev_user_text ),
                    ];
 
                    $attempted++;
                }
            }
 
            if ( $insertRows ) {
                $dbw->insert( 'ip_changes', $insertRows, __METHOD__, [ 'IGNORE' ] );
 
                $inserted += $dbw->affectedRows();
            }
 
            $lbFactory->waitForReplication();
            usleep( $throttle * 1000 );
 
            $blockStart = $blockEnd + 1;
        }
 
        $this->output( "Attempted to insert $attempted IP revisions, $inserted actually done.\n" );
 
        return true;
    }
 
    protected function getUpdateKey() {
        return 'populate ip_changes';
    }
}
 
$maintClass = PopulateIpChanges::class;
require_once RUN_MAINTENANCE_IF_MAIN;