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<?php
/**
* Copyright © Magento, Inc. All rights reserved.
* See COPYING.txt for license details.
*/
declare(strict_types=1);
namespace Magento\GraphQl\Controller;
use Magento\Framework\App\FrontControllerInterface;
use Magento\Framework\App\Request\Http;
use Magento\Framework\App\RequestInterface;
use Magento\Framework\App\ResponseInterface;
use Magento\Framework\GraphQl\Exception\ExceptionFormatter;
use Magento\Framework\GraphQl\Query\QueryProcessor;
use Magento\Framework\GraphQl\Query\Resolver\ContextInterface;
use Magento\Framework\GraphQl\Schema\SchemaGeneratorInterface;
use Magento\Framework\Serialize\SerializerInterface;
use Magento\Framework\Webapi\Response;
use Magento\Framework\GraphQl\Query\Fields as QueryFields;
/**
* Front controller for web API GraphQL area.
*
* @api
* @since 100.3.0
*/
class GraphQl implements FrontControllerInterface
{
/**
* @var Response
*/
private $response;
/**
* @var SchemaGeneratorInterface
*/
private $schemaGenerator;
/**
* @var SerializerInterface
*/
private $jsonSerializer;
/**
* @var QueryProcessor
*/
private $queryProcessor;
/**
* @var \Magento\Framework\GraphQl\Exception\ExceptionFormatter
*/
private $graphQlError;
/**
* @var \Magento\Framework\GraphQl\Query\Resolver\ContextInterface
*/
private $resolverContext;
/**
* @var HttpRequestProcessor
*/
private $requestProcessor;
/**
* @var QueryFields
*/
private $queryFields;
/**
* @param Response $response
* @param SchemaGeneratorInterface $schemaGenerator
* @param SerializerInterface $jsonSerializer
* @param QueryProcessor $queryProcessor
* @param \Magento\Framework\GraphQl\Exception\ExceptionFormatter $graphQlError
* @param \Magento\Framework\GraphQl\Query\Resolver\ContextInterface $resolverContext
* @param HttpRequestProcessor $requestProcessor
* @param QueryFields $queryFields
*/
public function __construct(
Response $response,
SchemaGeneratorInterface $schemaGenerator,
SerializerInterface $jsonSerializer,
QueryProcessor $queryProcessor,
ExceptionFormatter $graphQlError,
ContextInterface $resolverContext,
HttpRequestProcessor $requestProcessor,
QueryFields $queryFields
) {
$this->response = $response;
$this->schemaGenerator = $schemaGenerator;
$this->jsonSerializer = $jsonSerializer;
$this->queryProcessor = $queryProcessor;
$this->graphQlError = $graphQlError;
$this->resolverContext = $resolverContext;
$this->requestProcessor = $requestProcessor;
$this->queryFields = $queryFields;
}
/**
* Handle GraphQL request
*
* @param RequestInterface $request
* @return ResponseInterface
* @since 100.3.0
*/
public function dispatch(RequestInterface $request) : ResponseInterface
{
$statusCode = 200;
try {
/** @var Http $request */
$this->requestProcessor->processHeaders($request);
$data = $this->jsonSerializer->unserialize($request->getContent());
$query = isset($data['query']) ? $data['query'] : '';
$variables = isset($data['variables']) ? $data['variables'] : null;
// We have to extract queried field names to avoid instantiation of non necessary fields in webonyx schema
// Temporal coupling is required for performance optimization
$this->queryFields->setQuery($query, $variables);
$schema = $this->schemaGenerator->generate();
$result = $this->queryProcessor->process(
$schema,
$query,
$this->resolverContext,
isset($data['variables']) ? $data['variables'] : []
);
} catch (\Exception $error) {
$result['errors'] = isset($result) && isset($result['errors']) ? $result['errors'] : [];
$result['errors'][] = $this->graphQlError->create($error);
$statusCode = ExceptionFormatter::HTTP_GRAPH_QL_SCHEMA_ERROR_STATUS;
}
$this->response->setBody($this->jsonSerializer->serialize($result))->setHeader(
'Content-Type',
'application/json'
)->setHttpResponseCode($statusCode);
return $this->response;
}
}