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<?php declare(strict_types=1); |
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namespace Igni\Http\Middleware; |
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use Igni\Http\Exception\HttpException; |
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use Igni\Http\Response; |
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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 Throwable; |
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use ErrorException; |
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/** |
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* Middleware for error handling. If an exception is thrown and not catch during the request cycle, |
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* it will appear here. Middleware will catch it and return response with status code (500) and exception message |
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* as a body. |
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* |
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* @package Igni\Http\Middleware |
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*/ |
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final class ErrorMiddleware implements MiddlewareInterface |
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{ |
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private $errorHandler; |
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/** |
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* ErrorMiddleware constructor. |
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* |
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* @param callable $errorHandler |
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*/ |
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public function __construct(callable $errorHandler) |
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{ |
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$this->errorHandler = $errorHandler; |
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} |
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/** |
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* @see MiddlewareInterface::process |
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* |
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* @param ServerRequestInterface $request |
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* @param RequestHandlerInterface $next |
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* @return ResponseInterface |
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*/ |
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public function process(ServerRequestInterface $request, RequestHandlerInterface $next): ResponseInterface |
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{ |
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$this->setErrorHandler(); |
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try { |
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$response = $next->handle($request); |
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} catch (Throwable $exception) { |
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($this->errorHandler)($exception); |
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if ($exception instanceof HttpException) { |
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$response = Response::fromText($exception->getHttpBody(), $exception->getHttpStatusCode()); |
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} else { |
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$response = Response::fromText((string) $exception, Response::HTTP_INTERNAL_SERVER_ERROR); |
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} |
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} |
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$this->restoreErrorHandler(); |
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return $response; |
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} |
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private function setErrorHandler(): void |
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{ |
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set_error_handler(function (int $number, string $message, string $file, int $line) { |
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if (!(error_reporting() & $number)) { |
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return; |
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} |
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throw new ErrorException($message, 0, $number, $file, $line); |
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}); |
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} |
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private function restoreErrorHandler(): void |
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{ |
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restore_error_handler(); |
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} |
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} |
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igniphp /
framework
