class ApiDocFileLinkConstraintValidator in Apigee API Catalog 8

Class ApiDocFileLinkConstraintValidator.

Hierarchy

• class \Drupal\apigee_api_catalog\Plugin\Validation\Constraint\ApiDocFileLinkConstraintValidator extends \Symfony\Component\Validator\ConstraintValidator implements ContainerInjectionInterface

File

src/Plugin/Validation/Constraint/ApiDocFileLinkConstraintValidator.php, line 35

Namespace

Drupal\apigee_api_catalog\Plugin\Validation\Constraint

class ApiDocFileLinkConstraintValidator extends ConstraintValidator implements ContainerInjectionInterface {

  /**
   * The HTTP client to fetch the files with.
   *
   * @var \GuzzleHttp\ClientInterface
   */
  protected $httpClient;

  /**
   * ApiDocFileLinkConstraintValidator constructor.
   *
   * @param \GuzzleHttp\ClientInterface $http_client
   *   A Guzzle client object.
   */
  public function __construct(ClientInterface $http_client) {
    $this->httpClient = $http_client;
  }

  /**
   * {@inheritdoc}
   */
  public static function create(ContainerInterface $container) {
    return new static($container
      ->get('http_client'));
  }

  /**
   * {@inheritdoc}
   */
  public function validate($items, Constraint $constraint) {

    /** @var \Drupal\Core\Field\FieldItemListInterface $items */
    if (!isset($items)) {
      return;
    }
    foreach ($items as $item) {
      if ($item
        ->isEmpty()) {
        continue;
      }

      // Try to resolve the given URI to a URL. It may fail if it's scheme-less.
      try {
        $url = Url::fromUri($item
          ->getValue()['uri'], [
          'absolute' => TRUE,
        ])
          ->toString();
      } catch (\InvalidArgumentException $e) {
        $this->context
          ->addViolation($constraint->urlParseError, [
          '@error' => $e
            ->getMessage(),
        ]);
        return;
      }
      try {
        $options = [
          'allow_redirects' => [
            'strict' => TRUE,
          ],
        ];

        // Perform only a HEAD method to save bandwidth.

        /* @var $response \Psr\Http\Message\ResponseInterface */
        $response = $this->httpClient
          ->head($url, $options);
      } catch (RequestException $request_exception) {
        $this->context
          ->addViolation($constraint->notValid, [
          '%value' => $url,
        ]);
      }
    }
  }

}

Members

Name	Modifiers	Type	Description	Overrides
ApiDocFileLinkConstraintValidator::$httpClient	protected	property	The HTTP client to fetch the files with.
ApiDocFileLinkConstraintValidator::create	public static	function	Instantiates a new instance of this class. Overrides ContainerInjectionInterface::create
ApiDocFileLinkConstraintValidator::validate	public	function	Checks if the passed value is valid.
ApiDocFileLinkConstraintValidator::__construct	public	function	ApiDocFileLinkConstraintValidator constructor.