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<?php |
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namespace PhpJsonRpc\Server\Service; |
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use PhpJsonRpc\Server\Response\Error; |
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use PhpJsonRpc\Server\Request\Request; |
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use PhpJsonRpc\Server\Error\MethodNotFound; |
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use PhpJsonRpc\Server\Request\RequestBuilder; |
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use PhpJsonRpc\Server\Request\AbstractRequest; |
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use PhpJsonRpc\Server\Response\AbstractResponse; |
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use PhpJsonRpc\Server\Request\NotificationRequest; |
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use PhpJsonRpc\Server\Response\SuccessfulResponse; |
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use PhpJsonRpc\Server\Response\UnsuccessfulResponse; |
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use PhpJsonRpc\Server\Service\Method\Contract\Method; |
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use PhpJsonRpc\Server\Response\Contract\ErrorFormatter; |
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use PhpJsonRpc\Server\Response\ErrorFormatter\DefaultErrorFormatter; |
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class Service |
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{ |
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/** |
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* @var string |
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*/ |
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protected $endpoint; |
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/** |
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* @var ErrorFormatter |
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*/ |
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protected $errorFormatter; |
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/** |
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* @var Method[] |
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*/ |
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protected $methods = []; |
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/** |
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* @param string $endpoint |
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* @param ErrorFormatter|null $errorFormatter |
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*/ |
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public function __construct($endpoint, ErrorFormatter $errorFormatter = null) |
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{ |
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$this->endpoint = $endpoint; |
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$this->errorFormatter = $errorFormatter ? $errorFormatter : new DefaultErrorFormatter; |
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} |
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/** |
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* @param string $message |
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* |
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* @return AbstractResponse[]|AbstractResponse|null |
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* |
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* @throws \Exception |
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*/ |
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public function dispatch($message) |
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{ |
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try { |
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$requestBuilder = new RequestBuilder($message); |
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} catch (\Exception $e) { |
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return new UnsuccessfulResponse(null, new Error($e, $this->errorFormatter)); |
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} |
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if ($requestBuilder->isBatchRequest()) { |
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return $this->buildResponses($requestBuilder); |
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} |
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try { |
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$request = $requestBuilder->buildRequest($requestBuilder->decodedJson()); |
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} catch (\Exception $e) { |
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return new UnsuccessfulResponse(null, new Error($e, $this->errorFormatter)); |
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} |
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if ($request instanceof Request) { |
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try { |
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return $this->buildResponse($request); |
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} catch (\Exception $e) { |
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return new UnsuccessfulResponse($request->id(), new Error($e, $this->errorFormatter)); |
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} |
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} |
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} |
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/** |
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* @param Method $method |
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*/ |
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public function add(Method $method) |
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{ |
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$this->methods[$method->rpcMethodName()] = $method; |
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} |
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/** |
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* @return string |
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*/ |
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public function endpoint() |
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{ |
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return $this->endpoint; |
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} |
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/** |
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* @return Method[] |
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*/ |
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public function methods() |
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{ |
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return $this->methods; |
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} |
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/** |
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* @param string $methodName |
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* |
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* @return Method |
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* |
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* @throws MethodNotFound |
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*/ |
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public function findMethodBy($methodName) |
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{ |
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if (!array_key_exists($methodName, $this->methods())) { |
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throw new MethodNotFound; |
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} |
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return $this->methods()[$methodName]; |
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} |
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/** |
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* @param RequestBuilder $requestBuilder |
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* |
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* @return AbstractResponse[]|null |
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*/ |
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protected function buildResponses(RequestBuilder $requestBuilder) |
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{ |
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$responses = []; |
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foreach ($requestBuilder->decodedJson() as $messageObject) { |
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try { |
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$request = $requestBuilder->buildRequest($messageObject); |
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} catch (\Exception $e) { |
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$responses[] = new UnsuccessfulResponse(null, new Error($e, $this->errorFormatter)); |
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continue; |
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} |
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if ($request instanceof Request) { |
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try { |
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$responses[] = $this->buildResponse($request); |
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} catch (\Exception $e) { |
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$responses[] = new UnsuccessfulResponse($request->id(), new Error($e, $this->errorFormatter)); |
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} |
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} |
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} |
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return $responses ? : null; |
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} |
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/** |
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* @param AbstractRequest $request |
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* |
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* @return null|SuccessfulResponse |
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* |
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* @throws \Exception |
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*/ |
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protected function buildResponse(AbstractRequest $request) |
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{ |
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try { |
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$method = $this->findMethodBy($request->method()); |
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$methodResult = $method->run($request->params()); |
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} catch (\Exception $e) { |
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if ($request instanceof NotificationRequest) { |
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return null; |
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} |
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throw $e; |
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} |
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if ($request instanceof Request) { |
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return new SuccessfulResponse($request->id(), $methodResult); |
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} |
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return null; |
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} |
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} |
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