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<?php |
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namespace LunixREST\Server; |
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use LunixREST\AccessControl\AccessControl; |
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use LunixREST\Endpoint\Exceptions\ElementConflictException; |
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use LunixREST\Endpoint\Exceptions\ElementNotFoundException; |
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use LunixREST\Endpoint\Exceptions\InvalidRequestException; |
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use LunixREST\Endpoint\Exceptions\UnknownEndpointException; |
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use LunixREST\APIRequest\APIRequest; |
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use LunixREST\APIResponse\Exceptions\NotAcceptableResponseTypeException; |
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use LunixREST\APIResponse\APIResponse; |
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use LunixREST\APIResponse\ResponseFactory; |
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use LunixREST\Server\Exceptions\AccessDeniedException; |
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use LunixREST\Server\Exceptions\InvalidAPIKeyException; |
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use LunixREST\Server\Exceptions\MethodNotFoundException; |
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use LunixREST\Server\Exceptions\ThrottleLimitExceededException; |
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use LunixREST\Throttle\Throttle; |
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/** |
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* A Server implementation that derives it's behaviour from an AccessControl, a Throttle, a ResponseFactory, and a Router. |
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* Class GenericServer |
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* @package LunixREST\Server |
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*/ |
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class GenericServer implements Server |
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{ |
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/** |
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* @var AccessControl |
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*/ |
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protected $accessControl; |
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/** |
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* @var Throttle |
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*/ |
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protected $throttle; |
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/** |
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* @var ResponseFactory |
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*/ |
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protected $responseFactory; |
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/** |
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* @var Router |
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*/ |
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private $router; |
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/** |
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* @param AccessControl $accessControl |
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* @param Throttle $throttle |
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* @param ResponseFactory $responseFactory |
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* @param Router $router |
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*/ |
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public function __construct( |
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AccessControl $accessControl, |
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Throttle $throttle, |
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ResponseFactory $responseFactory, |
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Router $router |
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) { |
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$this->accessControl = $accessControl; |
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$this->throttle = $throttle; |
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$this->responseFactory = $responseFactory; |
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$this->router = $router; |
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} |
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/** |
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* @param APIRequest $request |
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* @return APIResponse |
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* @throws InvalidAPIKeyException |
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* @throws AccessDeniedException |
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* @throws ThrottleLimitExceededException |
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* @throws UnknownEndpointException |
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* @throws ElementNotFoundException |
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* @throws InvalidRequestException |
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* @throws ElementConflictException |
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* @throws MethodNotFoundException |
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* @throws NotAcceptableResponseTypeException |
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*/ |
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public function handleRequest(APIRequest $request): APIResponse |
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{ |
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$this->validateKey($request); |
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if ($this->throttle->shouldThrottle($request)) { |
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throw new ThrottleLimitExceededException('Request limit exceeded'); |
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} |
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$this->validateAcceptableMIMETypes($request); |
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if (!$this->accessControl->validateAccess($request)) { |
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throw new AccessDeniedException("API key does not have the required permissions to access requested resource"); |
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} |
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$this->throttle->logRequest($request); |
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$responseData = $this->router->route($request); |
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return $this->responseFactory->getResponse($responseData, $request->getAcceptableMIMETypes()); |
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} |
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/** |
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* @param APIRequest $request |
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* @throws InvalidAPIKeyException |
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*/ |
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protected function validateKey(APIRequest $request) |
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{ |
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if (!$this->accessControl->validateKey($request->getApiKey())) { |
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throw new InvalidAPIKeyException('Invalid API key'); |
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} |
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} |
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/** |
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* @param APIRequest $request |
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* @throws NotAcceptableResponseTypeException |
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*/ |
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protected function validateAcceptableMIMETypes(APIRequest $request) |
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{ |
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$supportedFormats = $this->responseFactory->getSupportedMIMETypes(); |
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$requestedFormats = $request->getAcceptableMIMETypes(); |
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//Cases that our response factory is capable of responding to |
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$requestedFormatSupported = empty($requestedFormats) || |
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in_array('*/*', $requestedFormats) || |
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!empty(array_intersect($requestedFormats, $supportedFormats)); |
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if (empty($supportedFormats) || !$requestedFormatSupported) { |
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throw new NotAcceptableResponseTypeException('None of the requested acceptable response types are supported'); |
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} |
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} |
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} |
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johnvandeweghe /
LunixREST
