function file_cron

Implements hook_cron().

File

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

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)),
                ]);
            }
        }
    }
}