Issue #3293422: Don't allow cron updates if Xdebug is enabled

src/Validator/XdebugValidator.php

@@ -2,8 +2,11 @@
 
 namespace Drupal\automatic_updates\Validator;
 
+use Drupal\automatic_updates\CronUpdater;
 use Drupal\automatic_updates\Event\ReadinessCheckEvent;
 use Drupal\Core\StringTranslation\StringTranslationTrait;
+use Drupal\package_manager\Event\PreCreateEvent;
+use Drupal\package_manager\Event\PreOperationStageEvent;
 use Symfony\Component\EventDispatcher\EventSubscriberInterface;
 
 /**
@@ -21,14 +24,21 @@ final class XdebugValidator implements EventSubscriberInterface {
   /**
    * Flags a warning if Xdebug is enabled.
    *
-   * @param \Drupal\automatic_updates\Event\ReadinessCheckEvent $event
+   * @param \Drupal\package_manager\Event\PreOperationStageEvent $event
    *   The event object.
    */
-  public function checkForXdebug(ReadinessCheckEvent $event): void {
-    if (extension_loaded('xdebug')) {
-      $event->addWarning([
+  public function checkForXdebug(PreOperationStageEvent $event): void {
+    if (function_exists('xdebug_break')) {
+      $messages = [
         $this->t('Xdebug is enabled, which may cause timeout errors.'),
-      ]);
+      ];
+
+      if ($event->getStage() instanceof CronUpdater && $event instanceof PreCreateEvent) {
+        $event->addError($messages);
+      }
+      else {
+        $event->addWarning($messages);
+      }
     }
   }
 
@@ -38,6 +48,7 @@ final class XdebugValidator implements EventSubscriberInterface {
   public static function getSubscribedEvents() {
     return [
       ReadinessCheckEvent::class => 'checkForXdebug',
+      PreCreateEvent::class => 'checkForXdebug',
     ];
   }