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<?php |
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/** |
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* Copyright 2016 - 2018, Cake Development Corporation (http://cakedc.com) |
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* |
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* Licensed under The MIT License |
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* Redistributions of files must retain the above copyright notice. |
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* |
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* @copyright Copyright 2016 - 2018, Cake Development Corporation (http://cakedc.com) |
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* @license MIT License (http://www.opensource.org/licenses/mit-license.php) |
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*/ |
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namespace CakeDC\Api\Middleware; |
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use CakeDC\Api\Service\ConfigReader; |
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use CakeDC\Api\Service\ServiceRegistry; |
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use Cake\Core\Configure; |
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use Exception; |
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use Psr\Http\Message\ResponseInterface; |
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use Psr\Http\Message\ServerRequestInterface; |
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/** |
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* Applies routing rules to the request and creates the controller |
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* instance if possible. |
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*/ |
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class ApiMiddleware |
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{ |
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/** |
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* @param \Psr\Http\Message\ServerRequestInterface $request The request. |
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* @param \Psr\Http\Message\ResponseInterface $response The response. |
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* @param callable $next The next middleware to call. |
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* @return \Psr\Http\Message\ResponseInterface A response. |
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*/ |
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public function __invoke(ServerRequestInterface $request, ResponseInterface $response, $next) |
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{ |
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$prefix = Configure::read('Api.prefix'); |
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if (empty($prefix)) { |
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$prefix = 'api'; |
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} |
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$useVersioning = Configure::read('Api.useVersioning'); |
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if ($useVersioning) { |
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$versionPrefix = Configure::read('Api.versionPrefix'); |
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$expr = '#/' . $prefix . '/(?<version>' . $versionPrefix . '\d+)' . '/' . '(?<service>[^/?]+)' . '(?<base>/?.*)#'; |
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} else { |
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$expr = '#/' . $prefix . '/' . '(?<service>[^/?]+)' . '(?<base>/?.*)#'; |
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} |
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$path = $request->getUri()->getPath(); |
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if (preg_match($expr, $path, $matches)) { |
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$version = isset($matches['version']) ? $matches['version'] : null; |
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$service = $matches['service']; |
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$url = '/' . $service; |
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if (!empty($matches['base'])) { |
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$url .= $matches['base']; |
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} |
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$options = [ |
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'service' => $service, |
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'version' => $version, |
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'request' => $request, |
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'response' => $response, |
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'baseUrl' => $url, |
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]; |
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try { |
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$options += (new ConfigReader())->serviceOptions($service, $version); |
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$Service = ServiceRegistry::getServiceLocator()->get($service, $options); |
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$result = $Service->dispatch(); |
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$response = $Service->respond($result); |
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} catch (Exception $e) { |
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$response->withStatus(400); |
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$response = $response->withStringBody($e->getMessage()); |
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} |
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return $response; |
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} |
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return $next($request, $response); |
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} |
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} |
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CakeDC /
cakephp-api
