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<?php |
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namespace Yoanm\JsonRpcServer\App\Handler; |
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use Yoanm\JsonRpcServer\App\Creator\ResponseCreator; |
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use Yoanm\JsonRpcServer\App\Dispatcher\JsonRpcServerDispatcherAwareTrait; |
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use Yoanm\JsonRpcServer\Domain\Event\Action as ActionEvent; |
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use Yoanm\JsonRpcServer\Domain\Exception\JsonRpcInvalidParamsException; |
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use Yoanm\JsonRpcServer\Domain\Exception\JsonRpcMethodNotFoundException; |
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use Yoanm\JsonRpcServer\Domain\JsonRpcMethodInterface; |
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use Yoanm\JsonRpcServer\Domain\JsonRpcMethodParamsValidatorInterface; |
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use Yoanm\JsonRpcServer\Domain\JsonRpcMethodResolverInterface; |
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use Yoanm\JsonRpcServer\Domain\Model\JsonRpcRequest; |
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use Yoanm\JsonRpcServer\Domain\Model\JsonRpcResponse; |
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/** |
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* Class JsonRpcRequestHandler |
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*/ |
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class JsonRpcRequestHandler |
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{ |
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use JsonRpcServerDispatcherAwareTrait; |
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/** @var JsonRpcMethodResolverInterface */ |
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private $methodResolver; |
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/** @var ResponseCreator */ |
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private $responseCreator; |
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/** @var JsonRpcMethodParamsValidatorInterface|null */ |
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private $methodParamsValidator = null; |
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/** |
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* @param JsonRpcMethodResolverInterface $methodResolver |
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* @param ResponseCreator $responseCreator |
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*/ |
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public function __construct(JsonRpcMethodResolverInterface $methodResolver, ResponseCreator $responseCreator) |
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{ |
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$this->methodResolver = $methodResolver; |
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$this->responseCreator = $responseCreator; |
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} |
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/** |
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* @param JsonRpcMethodParamsValidatorInterface $methodParamsValidator |
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*/ |
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public function setMethodParamsValidator(JsonRpcMethodParamsValidatorInterface $methodParamsValidator) |
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{ |
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$this->methodParamsValidator = $methodParamsValidator; |
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} |
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/** |
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* @param JsonRpcRequest $jsonRpcRequest |
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* |
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* @return JsonRpcResponse |
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* |
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* @throws JsonRpcInvalidParamsException |
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* @throws JsonRpcMethodNotFoundException |
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*/ |
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public function processJsonRpcRequest(JsonRpcRequest $jsonRpcRequest) : JsonRpcResponse |
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{ |
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$method = $this->resolveMethod($jsonRpcRequest); |
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$this->validateParamList($jsonRpcRequest, $method); |
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try { |
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$result = $method->apply($jsonRpcRequest->getParamList()); |
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$event = new ActionEvent\OnMethodSuccessEvent($result, $method, $jsonRpcRequest); |
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} catch (\Exception $exception) { |
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$event = new ActionEvent\OnMethodFailureEvent($exception, $method, $jsonRpcRequest); |
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} |
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$this->dispatchJsonRpcEvent($event::EVENT_NAME, $event); |
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return $this->createResponse($event); |
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} |
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/** |
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* @param JsonRpcRequest $jsonRpcRequest |
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* |
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* @return JsonRpcMethodInterface |
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* |
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* @throws JsonRpcMethodNotFoundException |
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*/ |
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private function resolveMethod(JsonRpcRequest $jsonRpcRequest) : JsonRpcMethodInterface |
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{ |
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$method = $this->methodResolver->resolve($jsonRpcRequest->getMethod()); |
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if (!$method instanceof JsonRpcMethodInterface) { |
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throw new JsonRpcMethodNotFoundException($jsonRpcRequest->getMethod()); |
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} |
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return $method; |
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} |
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/** |
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* |
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* @param JsonRpcRequest $jsonRpcRequest |
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* @param JsonRpcMethodInterface $method |
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* |
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* @throws JsonRpcInvalidParamsException |
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*/ |
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private function validateParamList(JsonRpcRequest $jsonRpcRequest, JsonRpcMethodInterface $method) |
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{ |
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if (null !== $this->methodParamsValidator) { |
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$violationList = $this->methodParamsValidator->validate($jsonRpcRequest, $method); |
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if (count($violationList)) { |
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throw new JsonRpcInvalidParamsException($violationList); |
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} |
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} |
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} |
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/** |
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* @param ActionEvent\AbstractOnMethodEvent $event |
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* |
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* @return JsonRpcResponse |
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*/ |
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protected function createResponse(ActionEvent\AbstractOnMethodEvent $event) : JsonRpcResponse |
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{ |
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if ($event instanceof ActionEvent\OnMethodSuccessEvent) { |
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return $this->responseCreator->createResultResponse($event->getResult(), $event->getJsonRpcRequest()); |
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} else { |
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/** @var $event ActionEvent\OnMethodFailureEvent */ |
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return $this->responseCreator->createErrorResponse( |
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$event->getException(), |
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$event->getJsonRpcRequest() |
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); |
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} |
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} |
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} |
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yoanm /
php-jsonrpc-server-sdk
