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<?php |
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namespace Yoanm\JsonRpcServer\Infra\Endpoint; |
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use Yoanm\JsonRpcServer\App\Dispatcher\JsonRpcServerDispatcherAwareTrait; |
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use Yoanm\JsonRpcServer\App\Handler\ExceptionHandler; |
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use Yoanm\JsonRpcServer\App\Handler\JsonRpcRequestHandler; |
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use Yoanm\JsonRpcServer\App\Serialization\JsonRpcCallSerializer; |
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use Yoanm\JsonRpcServer\Domain\Event\Acknowledge as AcknowledgeEvent; |
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use Yoanm\JsonRpcServer\Domain\Model\JsonRpcCall; |
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use Yoanm\JsonRpcServer\Domain\Model\JsonRpcCallResponse; |
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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 JsonRpcEndpoint |
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*/ |
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class JsonRpcEndpoint |
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{ |
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use JsonRpcServerDispatcherAwareTrait; |
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/** @var JsonRpcCallSerializer */ |
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private $jsonRpcCallSerializer; |
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/** @var JsonRpcRequestHandler */ |
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private $jsonRpcRequestHandler; |
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/** @var ExceptionHandler */ |
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private $exceptionHandler; |
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/** |
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* @param JsonRpcCallSerializer $jsonRpcCallSerializer |
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* @param JsonRpcRequestHandler $jsonRpcRequestHandler |
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*/ |
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public function __construct( |
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JsonRpcCallSerializer $jsonRpcCallSerializer, |
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JsonRpcRequestHandler $jsonRpcRequestHandler, |
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ExceptionHandler $exceptionHandler |
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) { |
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$this->jsonRpcCallSerializer = $jsonRpcCallSerializer; |
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$this->jsonRpcRequestHandler = $jsonRpcRequestHandler; |
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$this->exceptionHandler = $exceptionHandler; |
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} |
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/** |
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* @param string $request |
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* |
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* @return string The response |
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*/ |
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public function index(string $request) : string |
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{ |
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$jsonRpcCall = null; |
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try { |
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$jsonRpcCall = $this->getJsonRpcCall($request); |
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$jsonRpcCallResponse = $this->getJsonRpcCallResponse($jsonRpcCall); |
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return $this->getResponseString($jsonRpcCallResponse, $jsonRpcCall); |
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} catch (\Exception $exception) { |
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// Try to create a valid json-rpc error |
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$jsonRpcCallResponse = (new JsonRpcCallResponse())->addResponse( |
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$this->exceptionHandler->getJsonRpcResponseFromException($exception) |
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); |
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return $this->getResponseString($jsonRpcCallResponse, $jsonRpcCall); |
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} |
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} |
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/** |
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* @param string $request |
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* |
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* @return JsonRpcCall |
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*/ |
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protected function getJsonRpcCall(string $request) : JsonRpcCall |
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{ |
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$jsonRpcCall = $this->jsonRpcCallSerializer->deserialize($request); |
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$event = new AcknowledgeEvent\OnRequestReceivedEvent($request, $jsonRpcCall); |
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$this->dispatchJsonRpcEvent($event::EVENT_NAME, $event); |
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return $jsonRpcCall; |
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} |
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/** |
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* @param JsonRpcCallResponse $jsonRpcCallResponse |
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* @param JsonRpcCall|null $jsonRpcCall |
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* |
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* @return string |
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*/ |
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protected function getResponseString(JsonRpcCallResponse $jsonRpcCallResponse, JsonRpcCall $jsonRpcCall = null) : string |
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{ |
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$response = $this->jsonRpcCallSerializer->serialize($jsonRpcCallResponse); |
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$event = new AcknowledgeEvent\OnResponseSendingEvent($response, $jsonRpcCallResponse, $jsonRpcCall); |
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$this->dispatchJsonRpcEvent($event::EVENT_NAME, $event); |
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return $response; |
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} |
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/** |
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* @param JsonRpcCall $jsonRpcCall |
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* |
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* @return JsonRpcCallResponse |
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*/ |
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protected function getJsonRpcCallResponse(JsonRpcCall $jsonRpcCall) : JsonRpcCallResponse |
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{ |
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$jsonRpcCallResponse = new JsonRpcCallResponse($jsonRpcCall->isBatch()); |
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foreach ($jsonRpcCall->getItemList() as $itemPosition => $item) { |
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if ($jsonRpcCall->isBatch()) { |
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$event = new AcknowledgeEvent\OnBatchSubRequestProcessingEvent($itemPosition); |
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$this->dispatchJsonRpcEvent($event::EVENT_NAME, $event); |
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} |
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$jsonRpcCallResponse->addResponse( |
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$this->processItem($item) |
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); |
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if ($jsonRpcCall->isBatch()) { |
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$event = new AcknowledgeEvent\OnBatchSubRequestProcessedEvent($itemPosition); |
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$this->dispatchJsonRpcEvent($event::EVENT_NAME, $event); |
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} |
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} |
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return $jsonRpcCallResponse; |
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} |
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/** |
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* @param JsonRpcRequest|\Exception $item |
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* |
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* @return JsonRpcResponse |
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*/ |
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private function processItem($item) : JsonRpcResponse |
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{ |
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try { |
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if ($item instanceof \Exception) { |
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// Exception will be catched just below and converted to response |
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throw $item; |
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} |
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return $this->jsonRpcRequestHandler->processJsonRpcRequest($item); |
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} catch (\Exception $exception) { |
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return $this->exceptionHandler->getJsonRpcResponseFromException( |
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$exception, |
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$item instanceof JsonRpcRequest ? $item : null |
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); |
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} |
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} |
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} |
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