LoggedUpdateMaintenance.php

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<?php
abstract class LoggedUpdateMaintenance extends Maintenance {
    public function __construct() {
        parent::__construct();
        $this->addOption( 'force', 'Run the update even if it was completed already' );
        $this->setBatchSize( 200 );
    }
 
    public function execute() {
        $db = $this->getDB( DB_MASTER );
        $key = $this->getUpdateKey();
 
        if ( !$this->hasOption( 'force' )
            && $db->selectRow( 'updatelog', '1', [ 'ul_key' => $key ], __METHOD__ )
        ) {
            $this->output( "..." . $this->updateSkippedMessage() . "\n" );
 
            return true;
        }
 
        if ( !$this->doDBUpdates() ) {
            return false;
        }
 
        $db->insert( 'updatelog', [ 'ul_key' => $key ], __METHOD__, [ 'IGNORE' ] );
 
        return true;
    }
 
    protected function updateSkippedMessage() {
        $key = $this->getUpdateKey();
 
        return "Update '{$key}' already logged as completed. Use --force to run it again.";
    }
 
    abstract protected function doDBUpdates();
 
    abstract protected function getUpdateKey();
}