StatementExecutionSubscriber.php

<?php

namespace Drupal\Core\Database\EventSubscriber;

use Drupal\Core\Database\Database;
use Drupal\Core\Database\Event\StatementExecutionEndEvent;
use Symfony\Component\EventDispatcher\EventSubscriberInterface;

/**
 * Response subscriber to statement executions.
 */
class StatementExecutionSubscriber implements EventSubscriberInterface {
    
    /**
     * {@inheritdoc}
     */
    public static function getSubscribedEvents() : array {
        return [
            StatementExecutionEndEvent::class => 'onStatementExecutionEnd',
        ];
    }
    
    /**
     * Subscribes to a statement execution finished event.
     *
     * Logs the statement query if logging is active.
     *
     * @param \Drupal\Core\Database\Event\StatementExecutionEndEvent $event
     *   The database event.
     */
    public function onStatementExecutionEnd(StatementExecutionEndEvent $event) : void {
        $logger = Database::getConnection($event->target, $event->key)
            ->getLogger();
        if ($logger) {
            $logger->logFromEvent($event);
        }
    }

}