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<?php declare(strict_types=1); |
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/** |
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* This file is part of the daikon-cqrs/boot project. |
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* |
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* For the full copyright and license information, please view the LICENSE |
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* file that was distributed with this source code. |
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*/ |
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namespace Daikon\Boot\Middleware; |
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use Daikon\Boot\Middleware\Action\ActionInterface; |
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use Daikon\Boot\Middleware\Action\ResponderInterface; |
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use Daikon\Interop\Assertion; |
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use Daikon\Interop\AssertionFailedException; |
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use Daikon\Interop\RuntimeException; |
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use Daikon\Validize\Validation\ValidatorDefinition; |
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use Daikon\Validize\ValueObject\Severity; |
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use Exception; |
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use Fig\Http\Message\StatusCodeInterface; |
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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 Psr\Log\LoggerInterface; |
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class ActionHandler implements MiddlewareInterface, StatusCodeInterface |
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{ |
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use ResolvesDependency; |
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public const ATTR_ERRORS = '_errors'; |
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public const ATTR_PAYLOAD = '_payload'; |
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public const ATTR_STATUS_CODE = '_status_code'; |
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public const ATTR_RESPONDER = '_responder'; |
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protected ContainerInterface $container; |
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protected LoggerInterface $logger; |
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public function __construct(ContainerInterface $container, LoggerInterface $logger) |
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{ |
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$this->container = $container; |
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$this->logger = $logger; |
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} |
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public function process(ServerRequestInterface $request, RequestHandlerInterface $handler): ResponseInterface |
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{ |
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$requestHandler = $request->getAttribute(RoutingHandler::ATTR_REQUEST_HANDLER); |
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return $requestHandler instanceof ActionInterface |
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? $this->executeAction($requestHandler, $request) |
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: $handler->handle($request); |
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} |
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protected function executeAction(ActionInterface $action, ServerRequestInterface $request): ResponseInterface |
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{ |
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try { |
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if ($validator = $action->getValidator($request)) { |
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$validatorDefinition = new ValidatorDefinition(self::ATTR_PAYLOAD, Severity::critical()); |
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$request = $request->withAttribute( |
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self::ATTR_PAYLOAD, |
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$validator($validatorDefinition->withArgument($request)) |
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); |
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Assertion::noContent($request->getAttribute(self::ATTR_ERRORS)); |
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} |
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$request = $action($request); |
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} catch (Exception $error) { |
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switch (true) { |
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case $error instanceof AssertionFailedException: |
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$statusCode = self::STATUS_UNPROCESSABLE_ENTITY; |
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break; |
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default: |
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$this->logger->error($error->getMessage(), ['trace' => $error->getTrace()]); |
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$statusCode = self::STATUS_INTERNAL_SERVER_ERROR; |
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} |
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$request = $action->handleError( |
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$request->withAttribute( |
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self::ATTR_STATUS_CODE, |
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$request->getAttribute(self::ATTR_STATUS_CODE, $statusCode) |
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)->withAttribute( |
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self::ATTR_ERRORS, |
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$request->getAttribute(self::ATTR_ERRORS, $error) |
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) |
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); |
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} |
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if (!$responder = $this->resolveResponder($request)) { |
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throw $error ?? new RuntimeException( |
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sprintf("Unable to determine responder for '%s'.", get_class($action)) |
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); |
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} |
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return $responder->handle($request); |
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} |
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protected function resolveResponder(ServerRequestInterface $request): ?ResponderInterface |
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{ |
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$responder = $request->getAttribute(self::ATTR_RESPONDER); |
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if ($responder) { |
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/** @var ResponderInterface $responder */ |
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$responder = $this->resolve($this->container, $responder, ResponderInterface::class); |
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} |
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return $responder; |
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} |
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} |
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daikon-cqrs /
boot
