function file_cron in Drupal 8

Same name and namespace in other branches

1. 9 core/modules/file/file.module \file_cron()
2. 10 core/modules/file/file.module \file_cron()

Implements hook_cron().

File

core/modules/file/file.module, line 740

Defines a "managed_file" Form API field and a "file" field for Field module.

Code

function file_cron() {
  $age = \Drupal::config('system.file')
    ->get('temporary_maximum_age');
  $file_storage = \Drupal::entityTypeManager()
    ->getStorage('file');

  /** @var \Drupal\Core\StreamWrapper\StreamWrapperManagerInterface $stream_wrapper_manager */
  $stream_wrapper_manager = \Drupal::service('stream_wrapper_manager');

  // Only delete temporary files if older than $age. Note that automatic cleanup
  // is disabled if $age set to 0.
  if ($age) {
    $fids = Drupal::entityQuery('file')
      ->accessCheck(FALSE)
      ->condition('status', FILE_STATUS_PERMANENT, '<>')
      ->condition('changed', REQUEST_TIME - $age, '<')
      ->range(0, 100)
      ->execute();
    $files = $file_storage
      ->loadMultiple($fids);
    foreach ($files as $file) {
      $references = \Drupal::service('file.usage')
        ->listUsage($file);
      if (empty($references)) {
        if (!file_exists($file
          ->getFileUri())) {
          if (!$stream_wrapper_manager
            ->isValidUri($file
            ->getFileUri())) {
            \Drupal::logger('file system')
              ->warning('Temporary file "%path" that was deleted during garbage collection did not exist on the filesystem. This could be caused by a missing stream wrapper.', [
              '%path' => $file
                ->getFileUri(),
            ]);
          }
          else {
            \Drupal::logger('file system')
              ->warning('Temporary file "%path" that was deleted during garbage collection did not exist on the filesystem.', [
              '%path' => $file
                ->getFileUri(),
            ]);
          }
        }

        // Delete the file entity. If the file does not exist, this will
        // generate a second notice in the watchdog.
        $file
          ->delete();
      }
      else {
        \Drupal::logger('file system')
          ->info('Did not delete temporary file "%path" during garbage collection because it is in use by the following modules: %modules.', [
          '%path' => $file
            ->getFileUri(),
          '%modules' => implode(', ', array_keys($references)),
        ]);
      }
    }
  }
}