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<?php
namespace Drupal\user\EventSubscriber;
use Drupal\Core\Session\AccountInterface;
use Drupal\Core\Site\MaintenanceModeEvents;
use Drupal\Core\Site\MaintenanceModeInterface;
use Symfony\Component\EventDispatcher\EventSubscriberInterface;
use Symfony\Component\HttpKernel\Event\RequestEvent;
/**
* Maintenance mode subscriber to log out users.
*/
class MaintenanceModeSubscriber implements EventSubscriberInterface {
/**
* The maintenance mode.
*
* @var \Drupal\Core\Site\MaintenanceMode
*/
protected $maintenanceMode;
/**
* The current account.
*
* @var \Drupal\Core\Session\AccountInterface
*/
protected $account;
/**
* Constructs a new MaintenanceModeSubscriber.
*
* @param \Drupal\Core\Site\MaintenanceModeInterface $maintenance_mode
* The maintenance mode.
* @param \Drupal\Core\Session\AccountInterface $account
* The current user.
*/
public function __construct(MaintenanceModeInterface $maintenance_mode, AccountInterface $account) {
$this->maintenanceMode = $maintenance_mode;
$this->account = $account;
}
/**
* Logout users if site is in maintenance mode and user is not exempt.
*
* @param \Symfony\Component\HttpKernel\Event\RequestEvent $event
* The event to process.
*/
public function onMaintenanceModeRequest(RequestEvent $event) {
// If the site is offline, log out unprivileged users.
if ($this->account->isAuthenticated()) {
user_logout();
}
}
/**
* {@inheritdoc}
*/
public static function getSubscribedEvents(): array {
$events[MaintenanceModeEvents::MAINTENANCE_MODE_REQUEST][] = [
'onMaintenanceModeRequest',
-900,
];
return $events;
}
}
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