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<?php |
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namespace Drupal\graphql\GraphQL\Buffers; |
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use Drupal\Core\Url; |
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use Symfony\Component\HttpFoundation\Request; |
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use Symfony\Component\HttpFoundation\RequestStack; |
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use Symfony\Component\HttpKernel\HttpKernelInterface; |
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class SubRequestBuffer extends BufferBase { |
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/** |
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* The http kernel service. |
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* |
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* @var \Symfony\Component\HttpKernel\HttpKernelInterface |
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*/ |
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protected $httpKernel; |
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/** |
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* The request stack service. |
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* |
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* @var \Symfony\Component\HttpFoundation\RequestStack |
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*/ |
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protected $requestStack; |
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/** |
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* SubrequestBuffer constructor. |
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* |
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* @param \Symfony\Component\HttpKernel\HttpKernelInterface $httpKernel |
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* The http kernel service. |
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* @param \Symfony\Component\HttpFoundation\RequestStack $requestStack |
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* The request stack service. |
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*/ |
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public function __construct(HttpKernelInterface $httpKernel, RequestStack $requestStack) { |
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$this->httpKernel = $httpKernel; |
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$this->requestStack = $requestStack; |
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} |
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/** |
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* Add an item to the buffer. |
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* |
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* @param \Drupal\Core\Url $url |
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* The url object to run the subrequest on. |
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* |
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* @return \Closure |
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* The callback to invoke to load the result for this buffer item. |
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*/ |
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public function add(Url $url, callable $extract) { |
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$item = new \ArrayObject([ |
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'url' => $url, |
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'extract' => $extract, |
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]); |
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return $this->createBufferResolver($item); |
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} |
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/** |
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* {@inheritdoc} |
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*/ |
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protected function getBufferId($item) { |
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/** @var \Drupal\Core\Url $url */ |
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$url = $item['url']; |
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return $url->toString(); |
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} |
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/** |
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* {@inheritdoc} |
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*/ |
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public function resolveBufferArray(array $buffer) { |
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/** @var \Drupal\Core\Url $url */ |
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$url = reset($buffer)['url']; |
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$currentRequest = $this->requestStack->getCurrentRequest(); |
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$request = Request::create( |
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$url->getOption('routed_path') ?: $url->toString(), |
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'GET', |
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$currentRequest->query->all(), |
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$currentRequest->cookies->all(), |
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$currentRequest->files->all(), |
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$currentRequest->server->all() |
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); |
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$request->attributes->set('_graphql_subrequest', function () use ($buffer) { |
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return array_map(function ($item) { |
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return $item['extract']($item['url']); |
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}, $buffer); |
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}); |
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if ($session = $currentRequest->getSession()) { |
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$request->setSession($session); |
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} |
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/** @var \Drupal\graphql\GraphQL\Buffers\SubRequestResponse $response */ |
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$response = $this->httpKernel->handle($request, HttpKernelInterface::SUB_REQUEST); |
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// TODO: |
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// Remove the request stack manipulation once the core issue described at |
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// https://www.drupal.org/node/2613044 is resolved. |
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while ($this->requestStack->getCurrentRequest() === $request) { |
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$this->requestStack->pop(); |
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} |
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return $response->getResult(); |
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} |
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} |
drupal-graphql /
graphql
