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<?php |
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namespace Overblog\GraphQLBundle\Request; |
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use GraphQL\Executor\ExecutionResult; |
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use GraphQL\Executor\Promise\Promise; |
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use GraphQL\Executor\Promise\PromiseAdapter; |
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use GraphQL\Type\Schema; |
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use GraphQL\Validator\DocumentValidator; |
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use GraphQL\Validator\Rules\DisableIntrospection; |
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use GraphQL\Validator\Rules\QueryComplexity; |
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use GraphQL\Validator\Rules\QueryDepth; |
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use Overblog\GraphQLBundle\Event\Events; |
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use Overblog\GraphQLBundle\Event\ExecutorArgumentsEvent; |
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use Overblog\GraphQLBundle\Event\ExecutorContextEvent; |
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use Overblog\GraphQLBundle\Event\ExecutorResultEvent; |
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use Overblog\GraphQLBundle\Executor\ExecutorInterface; |
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use Overblog\GraphQLBundle\Executor\Promise\PromiseAdapterInterface; |
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use Symfony\Component\EventDispatcher\EventDispatcherInterface; |
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use Symfony\Component\HttpKernel\Exception\NotFoundHttpException; |
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class Executor |
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{ |
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const PROMISE_ADAPTER_SERVICE_ID = 'overblog_graphql.promise_adapter'; |
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/** @var Schema[] */ |
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private $schemas = []; |
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/** @var EventDispatcherInterface|null */ |
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private $dispatcher; |
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/** @var ExecutorInterface */ |
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private $executor; |
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/** @var PromiseAdapter */ |
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private $promiseAdapter; |
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/** @var callable|null */ |
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private $defaultFieldResolver; |
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public function __construct( |
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ExecutorInterface $executor, |
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EventDispatcherInterface $dispatcher, |
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PromiseAdapter $promiseAdapter, |
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callable $defaultFieldResolver = null |
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) { |
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$this->executor = $executor; |
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$this->dispatcher = $dispatcher; |
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$this->promiseAdapter = $promiseAdapter; |
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$this->defaultFieldResolver = $defaultFieldResolver; |
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} |
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public function setExecutor(ExecutorInterface $executor) |
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{ |
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$this->executor = $executor; |
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return $this; |
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} |
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public function setPromiseAdapter(PromiseAdapter $promiseAdapter) |
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{ |
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$this->promiseAdapter = $promiseAdapter; |
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return $this; |
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} |
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/** |
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* @param string $name |
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* @param Schema $schema |
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* |
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* @return $this |
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*/ |
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public function addSchema($name, Schema $schema) |
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{ |
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$this->schemas[$name] = $schema; |
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return $this; |
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} |
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/** |
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* @param string|null $name |
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* |
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* @return Schema |
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*/ |
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public function getSchema($name = null) |
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{ |
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if (empty($this->schemas)) { |
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throw new \RuntimeException('At least one schema should be declare.'); |
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} |
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if (null === $name) { |
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$schema = array_values($this->schemas)[0]; |
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} else { |
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if (!isset($this->schemas[$name])) { |
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throw new NotFoundHttpException(sprintf('Could not found "%s" schema.', $name)); |
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} |
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$schema = $this->schemas[$name]; |
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} |
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return $schema; |
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} |
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public function setMaxQueryDepth($maxQueryDepth) |
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{ |
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/** @var QueryDepth $queryDepth */ |
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$queryDepth = DocumentValidator::getRule('QueryDepth'); |
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$queryDepth->setMaxQueryDepth($maxQueryDepth); |
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} |
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public function setMaxQueryComplexity($maxQueryComplexity) |
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{ |
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/** @var QueryComplexity $queryComplexity */ |
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$queryComplexity = DocumentValidator::getRule('QueryComplexity'); |
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$queryComplexity->setMaxQueryComplexity($maxQueryComplexity); |
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} |
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public function disableIntrospectionQuery() |
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{ |
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DocumentValidator::addRule(new DisableIntrospection()); |
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} |
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/** |
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* @param null|string $schemaName |
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* @param array $request |
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* @param null|array|\ArrayObject|object $rootValue |
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* |
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* @return ExecutionResult |
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*/ |
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public function execute($schemaName, array $request, $rootValue = null) |
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{ |
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$executorArgumentsEvent = $this->preExecute( |
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$this->getSchema($schemaName), |
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isset($request[ParserInterface::PARAM_QUERY]) ? $request[ParserInterface::PARAM_QUERY] : null, |
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new \ArrayObject(), |
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$rootValue, |
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$request[ParserInterface::PARAM_VARIABLES], |
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isset($request[ParserInterface::PARAM_OPERATION_NAME]) ? $request[ParserInterface::PARAM_OPERATION_NAME] : null |
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); |
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$executorArgumentsEvent->getSchema()->processExtensions(); |
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$result = $this->executor->execute( |
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$executorArgumentsEvent->getSchema(), |
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$executorArgumentsEvent->getRequestString(), |
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$executorArgumentsEvent->getRootValue(), |
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$executorArgumentsEvent->getContextValue(), |
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$executorArgumentsEvent->getVariableValue(), |
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$executorArgumentsEvent->getOperationName() |
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); |
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$result = $this->postExecute($result); |
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return $result; |
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} |
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/** |
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* @param Schema $schema |
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* @param string $requestString |
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* @param \ArrayObject $contextValue |
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* @param mixed $rootValue |
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* @param array|null $variableValue |
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* @param string|null $operationName |
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* |
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* @return ExecutorArgumentsEvent |
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*/ |
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private function preExecute( |
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Schema $schema, |
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$requestString, |
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\ArrayObject $contextValue, |
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$rootValue = null, |
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array $variableValue = null, |
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$operationName = null |
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) { |
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$this->checkPromiseAdapter(); |
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$this->executor->setPromiseAdapter($this->promiseAdapter); |
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// this is needed when not using only generated types |
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if ($this->defaultFieldResolver) { |
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$this->executor->setDefaultFieldResolver($this->defaultFieldResolver); |
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} |
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$this->dispatcher->dispatch(Events::EXECUTOR_CONTEXT, new ExecutorContextEvent($contextValue)); |
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return $this->dispatcher->dispatch( |
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Events::PRE_EXECUTOR, |
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ExecutorArgumentsEvent::create($schema, $requestString, $contextValue, $rootValue, $variableValue, $operationName) |
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); |
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} |
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/** |
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* @param ExecutionResult|Promise $result |
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* |
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* @return ExecutionResult |
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*/ |
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private function postExecute($result) |
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{ |
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if ($result instanceof Promise) { |
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$result = $this->promiseAdapter->wait($result); |
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} |
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$this->checkExecutionResult($result); |
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return $this->dispatcher->dispatch(Events::POST_EXECUTOR, new ExecutorResultEvent($result))->getResult(); |
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} |
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private function checkPromiseAdapter() |
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{ |
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if ($this->promiseAdapter && !$this->promiseAdapter instanceof PromiseAdapterInterface && !is_callable([$this->promiseAdapter, 'wait'])) { |
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throw new \RuntimeException( |
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sprintf( |
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'PromiseAdapter should be an object instantiating "%s" or "%s" with a "wait" method.', |
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PromiseAdapterInterface::class, |
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PromiseAdapter::class |
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) |
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); |
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} |
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} |
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private function checkExecutionResult($result) |
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{ |
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if (!is_object($result) || !$result instanceof ExecutionResult) { |
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throw new \RuntimeException( |
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sprintf('Execution result should be an object instantiating "%s".', ExecutionResult::class) |
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); |
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} |
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} |
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} |
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It seems like the type of the argument is not accepted by the function/method which you are calling.
In some cases, in particular if PHP’s automatic type-juggling kicks in this might be fine. In other cases, however this might be a bug.
We suggest to add an explicit type cast like in the following example: