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<?php declare(strict_types=1); |
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namespace ApiClients\Foundation\Middleware; |
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use ApiClients\Foundation\Middleware\Annotation\PriorityInterface; |
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use Doctrine\Common\Annotations\AnnotationReader; |
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use Psr\Http\Message\RequestInterface; |
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use Psr\Http\Message\ResponseInterface; |
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use React\Promise\CancellablePromiseInterface; |
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use ReflectionMethod; |
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use Throwable; |
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use function React\Promise\reject; |
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use function React\Promise\resolve; |
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final class MiddlewareRunner |
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{ |
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const TRAITS = [ |
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'pre' => PreTrait::class, |
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'post' => PostTrait::class, |
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'error' => ErrorTrait::class, |
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]; |
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/** |
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* @var array |
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*/ |
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private $options; |
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/** |
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* @var MiddlewareInterface[] |
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*/ |
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private $middlewares; |
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/** |
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* @var AnnotationReader |
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*/ |
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private $annotationReader; |
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/** |
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* @var string |
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*/ |
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private $id; |
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/** |
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* MiddlewareRunner constructor. |
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* @param array $options |
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* @param MiddlewareInterface[] $middlewares |
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*/ |
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public function __construct(array $options, MiddlewareInterface ...$middlewares) |
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{ |
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$this->options = $options; |
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$this->id = bin2hex(random_bytes(32)); |
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$this->middlewares = $middlewares; |
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$this->annotationReader = new AnnotationReader(); |
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} |
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/** |
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* @param RequestInterface $request |
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* @return CancellablePromiseInterface |
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*/ |
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View Code Duplication |
public function pre( |
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RequestInterface $request |
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): CancellablePromiseInterface { |
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$promise = resolve($request); |
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$middlewares = $this->middlewares; |
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$middlewares = $this->orderMiddlewares('pre', ...$middlewares); |
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foreach ($middlewares as $middleware) { |
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$requestMiddleware = $middleware; |
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$promise = $promise->then(function (RequestInterface $request) use ($requestMiddleware) { |
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return $requestMiddleware->pre($request, $this->id, $this->options); |
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}); |
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} |
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return $promise; |
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} |
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/** |
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* @param ResponseInterface $response |
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* @return CancellablePromiseInterface |
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*/ |
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View Code Duplication |
public function post( |
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ResponseInterface $response |
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): CancellablePromiseInterface { |
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$promise = resolve($response); |
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$middlewares = $this->middlewares; |
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$middlewares = $this->orderMiddlewares('post', ...$middlewares); |
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foreach ($middlewares as $middleware) { |
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$responseMiddleware = $middleware; |
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$promise = $promise->then(function (ResponseInterface $response) use ($responseMiddleware) { |
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return $responseMiddleware->post($response, $this->id, $this->options); |
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}); |
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} |
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return $promise; |
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} |
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/** |
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* @param Throwable $throwable |
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* @return CancellablePromiseInterface |
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*/ |
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View Code Duplication |
public function error( |
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Throwable $throwable |
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): CancellablePromiseInterface { |
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$promise = reject($throwable); |
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$middlewares = $this->middlewares; |
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$middlewares = $this->orderMiddlewares('error', ...$middlewares); |
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foreach ($middlewares as $middleware) { |
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$errorMiddleware = $middleware; |
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$promise = $promise->then(null, function (Throwable $throwable) use ($errorMiddleware) { |
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return reject($errorMiddleware->error($throwable, $this->id, $this->options)); |
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}); |
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} |
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return $promise; |
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} |
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/** |
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* Sort the middlewares by priority. |
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* |
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* @param string $method |
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* @param MiddlewareInterface[] $middlewares |
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* @return array |
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*/ |
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protected function orderMiddlewares(string $method, MiddlewareInterface ...$middlewares): array |
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{ |
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$middlewares = array_filter($middlewares, function (MiddlewareInterface $middleware) use ($method) { |
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return !isset(class_uses($middleware)[self::TRAITS[$method]]); |
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}); |
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usort($middlewares, function (MiddlewareInterface $left, MiddlewareInterface $right) use ($method) { |
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return $this->getPriority($method, $right) <=> $this->getPriority($method, $left); |
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}); |
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return $middlewares; |
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} |
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private function getPriority(string $method, MiddlewareInterface $middleware): int |
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{ |
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$methodReflection = new ReflectionMethod($middleware, $method); |
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$annotations = $this->annotationReader->getMethodAnnotations($methodReflection); |
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foreach ($annotations as $annotation) { |
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if (!is_subclass_of($annotation, PriorityInterface::class)) { |
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continue; |
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} |
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return $annotation->priority(); |
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} |
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return Priority::DEFAULT; |
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} |
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} |
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Our type inference engine has found an assignment to a property that is incompatible with the declared type of that property.
Either this assignment is in error or the assigned type should be added to the documentation/type hint for that property..