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<?php |
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declare(strict_types=1); |
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namespace Yiisoft\Middleware\Dispatcher; |
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use Psr\Container\ContainerInterface; |
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use Psr\Http\Message\ResponseInterface; |
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use Psr\Http\Message\ServerRequestInterface; |
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use Psr\Http\Server\MiddlewareInterface; |
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use Psr\Http\Server\RequestHandlerInterface; |
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use Yiisoft\Injector\Injector; |
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final class MiddlewareFactory implements MiddlewareFactoryInterface |
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{ |
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private ContainerInterface $container; |
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public function __construct(ContainerInterface $container) |
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{ |
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$this->container = $container; |
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} |
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public function create($middlewareDefinition): MiddlewareInterface |
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{ |
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return $this->createMiddleware($middlewareDefinition); |
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} |
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/** |
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* @param array|callable|string $middlewareDefinition A name of PSR-15 middleware, a callable with |
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* `function(ServerRequestInterface $request, RequestHandlerInterface $handler): ResponseInterface` signature or |
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* a handler action (an array of [handlerClass, handlerMethod]). For handler action and callable typed parameters |
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* are automatically injected using dependency injection container passed to the route. |
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* Current request and handler could be obtained by type-hinting for {@see ServerRequestInterface} |
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* and {@see RequestHandlerInterface}. |
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* |
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* @return MiddlewareInterface |
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*/ |
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private function createMiddleware($middlewareDefinition): MiddlewareInterface |
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{ |
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$this->validateMiddleware($middlewareDefinition); |
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if (is_string($middlewareDefinition)) { |
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return $this->container->get($middlewareDefinition); |
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} |
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return $this->wrapCallable($middlewareDefinition); |
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} |
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private function wrapCallable($callback): MiddlewareInterface |
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{ |
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if (is_array($callback) && !is_object($callback[0])) { |
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[$controller, $action] = $callback; |
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return new class($controller, $action, $this->container) implements MiddlewareInterface { |
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private string $class; |
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private string $method; |
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private ContainerInterface $container; |
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public function __construct(string $class, string $method, ContainerInterface $container) |
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{ |
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$this->class = $class; |
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$this->method = $method; |
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$this->container = $container; |
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} |
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public function process(ServerRequestInterface $request, RequestHandlerInterface $handler): ResponseInterface |
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{ |
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$controller = $this->container->get($this->class); |
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return (new Injector($this->container))->invoke([$controller, $this->method], [$request, $handler]); |
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} |
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}; |
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} |
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return new class($callback, $this->container) implements MiddlewareInterface { |
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private ContainerInterface $container; |
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private $callback; |
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public function __construct(callable $callback, ContainerInterface $container) |
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{ |
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$this->callback = $callback; |
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$this->container = $container; |
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} |
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public function process(ServerRequestInterface $request, RequestHandlerInterface $handler): ResponseInterface |
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{ |
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$response = (new Injector($this->container))->invoke($this->callback, [$request, $handler]); |
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return $response instanceof MiddlewareInterface ? $response->process($request, $handler) : $response; |
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} |
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}; |
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} |
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/** |
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* @param array|callable|string $middlewareDefinition A name of PSR-15 middleware, a callable with |
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* `function(ServerRequestInterface $request, RequestHandlerInterface $handler): ResponseInterface` signature or |
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* a handler action (an array of [handlerClass, handlerMethod]). For handler action and callable typed parameters |
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* are automatically injected using dependency injection container passed to the route. |
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* Current request and handler could be obtained by type-hinting for {@see ServerRequestInterface} |
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* and {@see RequestHandlerInterface}. |
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* |
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* @throws InvalidMiddlewareDefinitionException |
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*/ |
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15 |
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private function validateMiddleware($middlewareDefinition): void |
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{ |
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if (is_string($middlewareDefinition) && is_subclass_of($middlewareDefinition, MiddlewareInterface::class)) { |
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return; |
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} |
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14 |
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if ($this->isCallable($middlewareDefinition) && (!is_array($middlewareDefinition) || !is_object($middlewareDefinition[0]))) { |
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return; |
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} |
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throw new InvalidMiddlewareDefinitionException($middlewareDefinition); |
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} |
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14 |
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private function isCallable($definition): bool |
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{ |
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if (is_callable($definition)) { |
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return is_object($definition) |
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? !$definition instanceof MiddlewareInterface |
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: true; |
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} |
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return is_array($definition) |
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&& array_keys($definition) === [0, 1] |
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&& in_array( |
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1 |
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$definition[1], |
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1 |
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class_exists($definition[0]) ? get_class_methods($definition[0]) : [], |
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6 |
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true |
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); |
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} |
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} |
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yiisoft /
middleware-dispatcher
