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<?php |
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/** |
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* ProxyController |
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*/ |
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namespace Graviton\ProxyBundle\Controller; |
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use Graviton\ProxyBundle\Service\ApiDefinitionLoader; |
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use Graviton\ProxyBundle\Service\TransformationHandler; |
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use GuzzleHttp\Exception\ClientException; |
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use GuzzleHttp\Exception\ServerException; |
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use Proxy\Proxy; |
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use Symfony\Bridge\PsrHttpMessage\Factory\DiactorosFactory; |
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use Symfony\Bridge\PsrHttpMessage\Factory\HttpFoundationFactory; |
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use Symfony\Bundle\FrameworkBundle\Templating\EngineInterface; |
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use Symfony\Component\HttpFoundation\Request; |
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use Symfony\Component\HttpFoundation\Response; |
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/** |
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* general controller for all proxy staff |
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* |
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* @package Graviton\ProxyBundle\Controller |
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* @author List of contributors <https://github.com/libgraviton/graviton/graphs/contributors> |
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* @license http://opensource.org/licenses/gpl-license.php GNU Public License |
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* @link http://swisscom.ch |
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*/ |
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class ProxyController |
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{ |
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/** |
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* @var Proxy |
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*/ |
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private $proxy; |
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/** |
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* @var EngineInterface |
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*/ |
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private $templating; |
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/** |
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* @var ApiDefinitionLoader |
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*/ |
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private $diactorosFactory; |
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/** |
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* @var DiactorosFactory |
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*/ |
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private $apiLoader; |
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/** |
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* @var HttpFoundationFactory |
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*/ |
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private $httpFoundationFactory; |
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/** |
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* @var array |
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*/ |
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private $proxySourceConfiguration; |
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/** |
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* @var TransformationHandler |
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*/ |
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private $transformationHandler; |
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/** |
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* Constructor |
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* |
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* @param Proxy $proxy proxy |
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* @param EngineInterface $templating twig templating engine |
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* @param ApiDefinitionLoader $loader definition loader |
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* @param DiactorosFactory $diactorosFactory convert HttpFoundation objects to PSR-7 |
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* @param HttpFoundationFactory $httpFoundationFactory convert PSR-7 interfaces to HttpFoundation |
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* @param TransformationHandler $transformationHandler transformation handler |
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* @param array $proxySourceConfiguration Set of sources to be recognized by the controller. |
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*/ |
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public function __construct( |
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Proxy $proxy, |
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EngineInterface $templating, |
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ApiDefinitionLoader $loader, |
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DiactorosFactory $diactorosFactory, |
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HttpFoundationFactory $httpFoundationFactory, |
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TransformationHandler $transformationHandler, |
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array $proxySourceConfiguration |
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) { |
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$this->proxy = $proxy; |
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$this->templating = $templating; |
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$this->apiLoader = $loader; |
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$this->diactorosFactory = $diactorosFactory; |
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$this->httpFoundationFactory = $httpFoundationFactory; |
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$this->proxySourceConfiguration = $proxySourceConfiguration; |
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$this->transformationHandler = $transformationHandler; |
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} |
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/** |
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* action for routing all requests directly to the third party API |
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* |
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* @param Request $request request |
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* |
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* @return \Psr\Http\Message\ResponseInterface|Response |
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*/ |
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public function proxyAction(Request $request) |
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{ |
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$api = $this->decideApiAndEndpoint($request->getUri()); |
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$this->registerProxySources(); |
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$url = $this->apiLoader->getEndpoint($api['endpoint'], true); |
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if (parse_url($url, PHP_URL_SCHEME) === false) { |
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$scheme = $request->getScheme(); |
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$url = $scheme.'://'.$url; |
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} |
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$response = null; |
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try { |
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$newRequest = Request::create( |
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$url, |
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$request->getMethod(), |
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array (), |
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array (), |
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array (), |
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array (), |
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$request->getContent(false) |
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); |
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$newRequest->headers->add($request->headers->all()); |
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$newRequest = $this->transformationHandler->transformRequest( |
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$api['apiName'], |
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$api['endpoint'], |
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$request, |
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$newRequest |
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); |
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$psrRequest = $this->diactorosFactory->createRequest($newRequest); |
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$psrResponse = $this->proxy->forward($psrRequest)->to($this->getHostWithScheme($url)); |
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$response = $this->httpFoundationFactory->createResponse($psrResponse); |
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$this->transformationHandler->transformResponse( |
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$api['apiName'], |
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$api['endpoint'], |
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$response, |
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clone $response |
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); |
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} catch (ClientException $e) { |
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$response = $e->getResponse(); |
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} catch (ServerException $serverException) { |
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$response = $serverException->getResponse(); |
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} |
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return $response; |
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} |
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/** |
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* get schema info |
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* |
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* @param Request $request request |
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* |
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* @return Response |
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*/ |
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public function schemaAction(Request $request) |
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{ |
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$api = $this->decideApiAndEndpoint($request->getUri()); |
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$this->registerProxySources(); |
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$schema = $this->apiLoader->getEndpointSchema(urldecode($api['endpoint'])); |
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$schema = $this->transformationHandler->transformSchema( |
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$api['apiName'], |
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$api['endpoint'], |
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$schema, |
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clone $schema |
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); |
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$response = new Response(json_encode($schema), 200); |
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$response->headers->set('Content-Type', 'application/json'); |
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return $this->templating->renderResponse( |
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'GravitonCoreBundle:Main:index.json.twig', |
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array ('response' => $response->getContent()), |
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$response |
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); |
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} |
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/** |
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* get API name and endpoint from the url (third party API) |
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* |
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* @param string $url the url |
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* |
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* @return array |
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*/ |
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protected function decideApiAndEndpoint($url) |
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{ |
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$path = parse_url($url, PHP_URL_PATH); |
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$pattern = array ( |
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"@schema\/@", |
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"@\/3rdparty\/@", |
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"@\/item$@", |
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); |
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$path = preg_replace($pattern, '', $path); |
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//get api name and endpoint |
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$apiName = substr($path, 0, strpos($path, '/')); |
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$endpoint = str_replace($apiName, '', $path); |
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return array ( |
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"apiName" => $apiName, |
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"endpoint" => $endpoint, |
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); |
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} |
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/** |
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* Registers configured external services to be proxied. |
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* |
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* @return Void |
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*/ |
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private function registerProxySources() |
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{ |
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if (array_key_exists('swagger', $this->proxySourceConfiguration)) { |
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foreach ($this->proxySourceConfiguration['swagger'] as $config) { |
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$this->apiLoader->setOption($config); |
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} |
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} |
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} |
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/** |
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* get host, scheme and port |
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* |
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* @param string $url the url |
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* |
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* @return string |
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*/ |
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private function getHostWithScheme($url) |
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{ |
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$components = parse_url($url); |
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$host = $components['scheme'].'://'.$components['host']; |
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if (!empty($components['port'])) { |
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$host .= ':'.$components['port']; |
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} |
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return $host; |
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} |
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} |
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libgraviton /
graviton
Loading history...
Our type inference engine has found an assignment to a property that is incompatible with the declared type of that property.
Either this assignment is in error or the assigned type should be added to the documentation/type hint for that property..