Clear entity cache before render

Question

I secured some file in an s3 bucket using s3fs. My problem is : the "Expires" argument send to build the file URI is not reset each time the object is call in my API.

time doesn't change if I don't clear the cache with drush

$expires = time() + 10;

So I tried to use hook_entity_view :

if ($entity->bundle() === 'my_bundle') {
    foreach ($entity->getCacheTags() as $tag) {
      $tags[] = $tag;
    }
  }

Doesn't work

Drupal::entityTypeManager()->getStorage($entityType)->resetCache();

Nop

\Drupal::service('cache.render')->deleteAll();
\Drupal::service('cache.entity')->deleteAll();
\Drupal::service('cache.data')->deleteAll();

deleteAll or invalidateAll, none of it work.

drupal_flush_all_caches();

Nothing, I'm starting to think I have config problem... If someone can save me !

UPDATE

It seems hook_entity_load works with my API, it clear the cache correctly. The problem remains when i'm trying to watch the content in my Drupal website, in the content view.

Answer 1

Ok everything is fixed, there were 2 points :

• Clean the cache when the media 'masterclass_private_video' is called, so the request to AWS s3 has the correct "Expires" timestamp when call by my VueJs API.
• Clean the render cache of the content view in my drupal backend.

Clean the media cache for the API :

function mymodule_entity_load(array $entities, $entity_type_id)
{
  $tags = [];
  foreach ($entities as $entity) {
    if ($entity->bundle() === 'masterclass_private_video') {
      foreach ($entity->getCacheTags() as $tag) {
        $tags[] = $tag;
      }
    }
  }

  if (!empty($tags)) {
    Cache::invalidateTags($tags);
  }
}

Clean the page cache :

function mymodule_node_view_alter(array &$build, Drupal\Core\Entity\EntityInterface $entity, \Drupal\Core\Entity\Display\EntityViewDisplayInterface $display)
{
  if ($entity->bundle() === 'masterclass' || $entity->bundle() === 'masterclass_chapter') {
    $build['#cache']['max-age'] = 0;
    \Drupal::service('page_cache_kill_switch')->trigger();
  }
}

To be clear, the goal is to reset the $expires, so the AWS s3 works :

function mymodule_s3fs_url_settings_alter(array &$url_settings, $s3_file_path)
{
  $split = explode('/', $s3_file_path);

  if (in_array('private', $split)) {
    $file_path = getenv('AWS_CLOUDFRONT_ENDPOINT') . $s3_file_path;

    $expires = time() + 86400;
    $private_key_filename = '/var/www/my-drupal/keys/pk-cloudfront.pem';
    $key_pair_id = getenv('AWS_S3_KEY_ID');

    $canned_policy_getters = Drupal::service('mymodule.aws.signature')
      ->getCannedPolicyGetters($file_path, $private_key_filename, $key_pair_id, $expires);

    $url_settings['custom_GET_args'] = $canned_policy_getters;
  }
}