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<?php |
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namespace LunixREST; |
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use LunixREST\RequestFactory\Exceptions\UnableToCreateRequestException; |
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use LunixREST\Server\APIResponse\APIResponse; |
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use LunixREST\Server\Exceptions\UnableToHandleRequestException; |
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use LunixREST\RequestFactory\RequestFactory; |
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use LunixREST\Server\Server; |
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use Psr\Http\Message\ResponseInterface; |
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use Psr\Http\Message\ServerRequestInterface; |
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use Psr\Log\LoggerAwareTrait; |
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use Psr\Log\LoggerInterface; |
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use Psr\Log\LogLevel; |
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/** |
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* A class that interfaces PSR-7 with our APIRequests and uses a Server to handle the APIRequest. Handles the PSR-7 response building as well. |
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* Class HTTPServer |
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* @package LunixREST |
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*/ |
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class HTTPServer |
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{ |
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use LoggerAwareTrait; |
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/** |
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* @var Server |
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*/ |
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protected $server; |
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/** |
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* @var RequestFactory |
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*/ |
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protected $requestFactory; |
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/** |
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* HTTPServer constructor. |
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* @param Server $server |
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* @param RequestFactory $requestFactory |
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* @param LoggerInterface $logger |
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*/ |
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public function __construct(Server $server, RequestFactory $requestFactory, LoggerInterface $logger) |
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{ |
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$this->server = $server; |
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$this->requestFactory = $requestFactory; |
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$this->logger = $logger; |
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} |
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/** |
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* Clones a response, changing contents based on the handling of a given request. |
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* Taking in a response allows us not to define a specific response implementation to create. |
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* @param ServerRequestInterface $serverRequest |
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* @param ResponseInterface $response |
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* @return ResponseInterface |
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*/ |
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public function handleRequest(ServerRequestInterface $serverRequest, ResponseInterface $response): ResponseInterface |
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{ |
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$response = $response->withProtocolVersion($serverRequest->getProtocolVersion()); |
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try { |
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try { |
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$APIRequest = $this->requestFactory->create($serverRequest); |
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} catch (UnableToCreateRequestException $exception) { |
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return $this->handleRequestFactoryException($exception, $response); |
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} |
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try { |
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$APIResponse = $this->server->handleRequest($APIRequest); |
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} catch (UnableToHandleRequestException $exception) { |
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return $this->handleServerException($exception, $response); |
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} |
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return $this->buildResponse($APIResponse, $response); |
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} catch (\Throwable $e) { |
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$this->logCaughtThrowableResultingInHTTPCode(500, $e, LogLevel::CRITICAL); |
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return $response->withStatus(500, "Internal Server Error"); |
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} |
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} |
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/** |
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* Takes an APIResponse and builds a PSR-7 Response |
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* @param APIResponse $APIResponse |
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* @param ResponseInterface $response |
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* @return ResponseInterface |
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*/ |
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protected function buildResponse(APIResponse $APIResponse, ResponseInterface $response): ResponseInterface |
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{ |
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$response = $response->withStatus(200, "200 OK"); |
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$response = $response->withAddedHeader("Content-Type", $APIResponse->getMIMEType()); |
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$response = $response->withAddedHeader("Content-Length", $APIResponse->getAsDataStream()->getSize()); |
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$this->logger->debug("Responding to request successfully"); |
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return $response->withBody($APIResponse->getAsDataStream()); |
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} |
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/** |
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* @param UnableToCreateRequestException $exception |
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* @param ResponseInterface $response |
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* @return ResponseInterface |
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*/ |
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protected function handleRequestFactoryException(UnableToCreateRequestException $exception, ResponseInterface $response): ResponseInterface |
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{ |
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$this->logCaughtThrowableResultingInHTTPCode(400, $exception, LogLevel::INFO); |
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return $response->withStatus(400, "Bad Request"); |
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} |
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/** |
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* @param UnableToHandleRequestException $exception |
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* @param ResponseInterface $response |
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* @return ResponseInterface |
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*/ |
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protected function handleServerException(UnableToHandleRequestException $exception, ResponseInterface $response): ResponseInterface |
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{ |
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$this->logCaughtThrowableResultingInHTTPCode(500, $exception, LogLevel::CRITICAL); |
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return $response->withStatus(500, "Internal Server Error"); |
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} |
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/** |
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* Dumps a PSR-7 ResponseInterface to the SAPI. |
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* @param ResponseInterface $response |
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*/ |
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public static function dumpResponse(ResponseInterface $response) |
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{ |
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$statusLine = sprintf( |
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"HTTP/%s %d %s", |
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$response->getProtocolVersion(), |
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$response->getStatusCode(), |
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$response->getReasonPhrase() |
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); |
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header($statusLine, true, $response->getStatusCode()); |
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foreach ($response->getHeaders() as $name => $values) { |
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foreach ($values as $value) { |
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header(sprintf('%s: %s', $name, $value), false); |
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} |
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} |
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$body = $response->getBody(); |
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while(!$body->eof()) { |
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echo $body->read(1024); |
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} |
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} |
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/** |
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* @param int $code |
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* @param \Throwable $exception |
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* @param $level |
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*/ |
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protected function logCaughtThrowableResultingInHTTPCode(int $code, \Throwable $exception, $level): void |
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{ |
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$this->logger->log($level, "Returning HTTP {code}: {message}", ["code" => $code, "message" => $exception->getMessage()]); |
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} |
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} |
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johnvandeweghe /
LunixREST
