function SystemHooks::cron

Implements hook_cron().

Remove older rows from flood, batch cache and expirable keyvalue tables. Also ensure files directories have .htaccess files.

Attributes

File

core/modules/system/src/Hook/SystemHooks.php, line 317

Class

SystemHooks

Hook implementations for system.

Namespace

Code

public function cron() : void {
  // Clean up the flood.
  \Drupal::flood()->garbageCollection();
  foreach (Cache::getBins() as $cache_backend) {
    $cache_backend->garbageCollection();
  }
  // Clean up the expirable key value database store.
  if (\Drupal::service('keyvalue.expirable.database') instanceof KeyValueDatabaseExpirableFactory) {
    \Drupal::service('keyvalue.expirable.database')->garbageCollection();
  }
  // Clean up any garbage in the queue service.
  $queue_worker_manager = \Drupal::service('plugin.manager.queue_worker');
  $queue_factory = \Drupal::service('queue');
  foreach (array_keys($queue_worker_manager->getDefinitions()) as $queue_name) {
    $queue = $queue_factory->get($queue_name);
    if ($queue instanceof QueueGarbageCollectionInterface) {
      $queue->garbageCollection();
    }
  }
  // Ensure that all of Drupal's standard directories (e.g., the public files
  // directory and config directory) have appropriate .htaccess files.
  \Drupal::service('file.htaccess_writer')->ensure();
  if (\Drupal::config('system.advisories')->get('enabled')) {
    // Fetch the security advisories so that they will be pre-fetched during
    // systemAdvisoriesRequirements() and system_page_top().
    /** @var \Drupal\system\SecurityAdvisories\SecurityAdvisoriesFetcher $fetcher */
    $fetcher = \Drupal::service('system.sa_fetcher');
    $fetcher->getSecurityAdvisories();
  }
}