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<?php |
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declare(strict_types=1); |
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namespace Yiisoft\ErrorHandler; |
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use Psr\Container\ContainerInterface; |
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use Psr\Http\Message\ResponseFactoryInterface; |
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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\Http\Header; |
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use Yiisoft\Http\Status; |
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/** |
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* ErrorCatcher catches all throwables from the next middlewares and renders it |
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* according to the content type passed by the client. |
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*/ |
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final class ErrorCatcher implements MiddlewareInterface |
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{ |
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private array $renderers = [ |
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'application/json' => JsonRenderer::class, |
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'application/xml' => XmlRenderer::class, |
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'text/xml' => XmlRenderer::class, |
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'text/plain' => PlainTextRenderer::class, |
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'text/html' => HtmlRenderer::class, |
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'*/*' => HtmlRenderer::class, |
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]; |
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private ResponseFactoryInterface $responseFactory; |
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private ErrorHandler $errorHandler; |
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private ContainerInterface $container; |
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private ?string $contentType = null; |
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public function __construct( |
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ResponseFactoryInterface $responseFactory, |
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ErrorHandler $errorHandler, |
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ContainerInterface $container |
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) { |
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$this->responseFactory = $responseFactory; |
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$this->errorHandler = $errorHandler; |
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$this->container = $container; |
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} |
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public function withRenderer(string $mimeType, string $rendererClass): self |
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{ |
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$this->validateMimeType($mimeType); |
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$this->validateRenderer($rendererClass); |
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$new = clone $this; |
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$new->renderers[$this->normalizeMimeType($mimeType)] = $rendererClass; |
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return $new; |
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} |
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/** |
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* @param string[] $mimeTypes MIME types or, if not specified, all will be removed. |
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*/ |
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public function withoutRenderers(string ...$mimeTypes): self |
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{ |
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$new = clone $this; |
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if (count($mimeTypes) === 0) { |
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$new->renderers = []; |
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return $new; |
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} |
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foreach ($mimeTypes as $mimeType) { |
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$this->validateMimeType($mimeType); |
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unset($new->renderers[$this->normalizeMimeType($mimeType)]); |
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} |
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return $new; |
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} |
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/** |
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* Force content type to respond with regardless of request |
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* @param string $contentType |
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* @return $this |
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*/ |
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public function forceContentType(string $contentType): self |
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{ |
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$this->validateMimeType($contentType); |
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if (!isset($this->renderers[$contentType])) { |
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throw new \InvalidArgumentException(sprintf('The renderer for %s is not set.', $contentType)); |
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} |
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$new = clone $this; |
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$new->contentType = $contentType; |
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return $new; |
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} |
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private function handleException(\Throwable $e, ServerRequestInterface $request): ResponseInterface |
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{ |
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$contentType = $this->contentType ?? $this->getContentType($request); |
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$renderer = $this->getRenderer(strtolower($contentType)); |
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if ($renderer !== null) { |
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$renderer->setRequest($request); |
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} |
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$content = $this->errorHandler->handleCaughtThrowable($e, $renderer); |
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$response = $this->responseFactory->createResponse(Status::INTERNAL_SERVER_ERROR) |
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->withHeader(Header::CONTENT_TYPE, $contentType); |
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$response->getBody()->write($content); |
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return $response; |
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} |
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private function getRenderer(string $contentType): ?ThrowableRendererInterface |
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{ |
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if (isset($this->renderers[$contentType])) { |
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return $this->container->get($this->renderers[$contentType]); |
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} |
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return null; |
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} |
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private function getContentType(ServerRequestInterface $request): string |
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{ |
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try { |
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foreach (HeaderHelper::getSortedAcceptTypes($request->getHeader(Header::ACCEPT)) as $header) { |
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if (array_key_exists($header, $this->renderers)) { |
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return $header; |
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} |
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} |
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} catch (\InvalidArgumentException $e) { |
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// The Accept header contains an invalid q factor |
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} |
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return '*/*'; |
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} |
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public function process(ServerRequestInterface $request, RequestHandlerInterface $handler): ResponseInterface |
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{ |
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try { |
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return $handler->handle($request); |
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} catch (\Throwable $e) { |
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return $this->handleException($e, $request); |
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} |
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} |
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/** |
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* @throws \InvalidArgumentException |
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*/ |
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private function validateMimeType(string $mimeType): void |
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{ |
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if (strpos($mimeType, '/') === false) { |
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throw new \InvalidArgumentException('Invalid mime type.'); |
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} |
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} |
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private function normalizeMimeType(string $mimeType): string |
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{ |
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return strtolower(trim($mimeType)); |
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} |
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private function validateRenderer(string $rendererClass): void |
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{ |
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if (trim($rendererClass) === '') { |
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throw new \InvalidArgumentException('The renderer class cannot be an empty string.'); |
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} |
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if ($this->container->has($rendererClass) === false) { |
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throw new \InvalidArgumentException("The renderer \"$rendererClass\" cannot be found."); |
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} |
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} |
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} |
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yiisoft /
error-handler
