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<?php
namespace Drupal\config;
use Drupal\Core\Config\ConfigEvents;
use Drupal\Core\Config\ConfigImporterEvent;
use Drupal\Core\Config\ConfigImportValidateEventSubscriberBase;
/**
* Config subscriber.
*/
class ConfigSubscriber extends ConfigImportValidateEventSubscriberBase {
/**
* Checks that the Configuration module is not being uninstalled.
*
* @param ConfigImporterEvent $event
* The config import event.
*/
public function onConfigImporterValidate(ConfigImporterEvent $event) {
$importer = $event->getConfigImporter();
$core_extension = $importer->getStorageComparer()->getSourceStorage()->read('core.extension');
if (!isset($core_extension['module']['config'])) {
$importer->logError($this->t('Can not uninstall the Configuration module as part of a configuration synchronization through the user interface.'));
}
}
/**
* {@inheritdoc}
*/
public static function getSubscribedEvents() {
$events[ConfigEvents::IMPORT_VALIDATE][] = ['onConfigImporterValidate', 20];
return $events;
}
}