Context.php in GraphQL 8.3

Namespace

Drupal\graphql_core\Plugin\GraphQL\Fields\Context

File

modules/graphql_core/src/Plugin/GraphQL/Fields/Context/Context.php

<?php

namespace Drupal\graphql_core\Plugin\GraphQL\Fields\Context;

use Drupal\Core\Plugin\ContainerFactoryPluginInterface;
use Drupal\Core\Plugin\Context\ContextRepositoryInterface;
use Drupal\Core\Url;
use Drupal\graphql\GraphQL\Buffers\SubRequestBuffer;
use Drupal\graphql\GraphQL\Execution\ResolveContext;
use Drupal\graphql\Plugin\GraphQL\Fields\FieldPluginBase;
use Symfony\Component\DependencyInjection\ContainerInterface;
use GraphQL\Type\Definition\ResolveInfo;

/**
 * Request arbitrary drupal context objects with GraphQL.
 *
 * @GraphQLField(
 *   id = "context",
 *   secure = true,
 *   parents = {"Root", "InternalUrl"},
 *   deriver = "Drupal\graphql_core\Plugin\Deriver\Fields\ContextDeriver"
 * )
 */
class Context extends FieldPluginBase implements ContainerFactoryPluginInterface {

  /**
   * The context repository service.
   *
   * @var \Drupal\Core\Plugin\Context\ContextRepositoryInterface
   */
  protected $contextRepository;

  /**
   * The subrequest buffer service.
   *
   * @var \Drupal\graphql\GraphQL\Buffers\SubRequestBuffer
   */
  protected $subRequestBuffer;

  /**
   * {@inheritdoc}
   */
  public static function create(ContainerInterface $container, array $configuration, $pluginId, $pluginDefinition) {
    return new static($configuration, $pluginId, $pluginDefinition, $container
      ->get('graphql.buffer.subrequest'), $container
      ->get('graphql.context_repository'));
  }

  /**
   * Context constructor.
   *
   * @param array $configuration
   *   The plugin configuration array.
   * @param string $pluginId
   *   The plugin id.
   * @param mixed $pluginDefinition
   *   The plugin definition.
   * @param \Drupal\graphql\GraphQL\Buffers\SubRequestBuffer $subRequestBuffer
   *   The sub-request buffer service.
   * @param \Drupal\Core\Plugin\Context\ContextRepositoryInterface $contextRepository
   *   The context repository service.
   */
  public function __construct(array $configuration, $pluginId, $pluginDefinition, SubRequestBuffer $subRequestBuffer, ContextRepositoryInterface $contextRepository) {
    parent::__construct($configuration, $pluginId, $pluginDefinition);
    $this->contextRepository = $contextRepository;
    $this->subRequestBuffer = $subRequestBuffer;
  }

  /**
   * {@inheritdoc}
   */
  protected function resolveValues($value, array $args, ResolveContext $context, ResolveInfo $info) {
    if (!$value instanceof Url) {
      $value = Url::fromRoute('<front>');
    }
    $resolve = $this->subRequestBuffer
      ->add($value, function () {
      $id = $this
        ->getPluginDefinition()['context_id'];
      $contexts = $this->contextRepository
        ->getRuntimeContexts([
        $id,
      ]);
      return isset($contexts[$id]) ? $contexts[$id]
        ->getContextValue() : NULL;
    });
    return function ($value, array $args, ResolveContext $context, ResolveInfo $info) use ($resolve) {
      (yield $resolve());
    };
  }

}

Classes

Name	Description
Context	Request arbitrary drupal context objects with GraphQL.