drupal-graphql / graphql

   * @return \Drupal\Core\Cache\CacheableMetadata

   *   The cache metadata collected from the schema's types.

   */

  protected function extractSchemaCacheMetadata(AbstractSchema $schema) {

    $metadata = new CacheableMetadata();

    $metadata->setCacheMaxAge(Cache::PERMANENT);

    $metadata->addCacheTags(['graphql_schema']);

    $metadata->addCacheableDependency($this->collectCacheMetadata($schema, function (CacheableEdgeInterface $item, AbstractSchema $schema) {

      return $item->getSchemaCacheMetadata($schema);

    }));

    return $metadata;

  }

  /**

   * Collects result cache metadata from all types registered with the schema.

   * @return \Drupal\Core\Cache\CacheableMetadata

   *   The cache metadata collected from the schema's types.

   */

  protected function extractResponseCacheMetadata(AbstractSchema $schema) {

    $metadata = new CacheableMetadata();

    $metadata->setCacheMaxAge(Cache::PERMANENT);

    $metadata->addCacheTags(['graphql_response']);

    $metadata->addCacheContexts(['gql']);

    $metadata->addCacheableDependency($this->collectCacheMetadata($schema, function (CacheableEdgeInterface $item, AbstractSchema $schema) {

      return $item->getResponseCacheMetadata($schema);

    }));

    return $metadata;

  }

  /**

   * Recursively collects cache metadata from the generated schema.