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<?php |
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namespace Yoanm\JsonRpcServer\App\Serialization; |
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use Yoanm\JsonRpcServer\Domain\Exception\JsonRpcInvalidRequestException; |
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use Yoanm\JsonRpcServer\Domain\Model\JsonRpcRequest; |
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/** |
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* Class RequestDenormalizer |
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*/ |
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class RequestDenormalizer |
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{ |
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const KEY_JSON_RPC = 'json-rpc'; |
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const KEY_ID = 'id'; |
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const KEY_METHOD = 'method'; |
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const KEY_PARAM_LIST = 'params'; |
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/** |
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* @param mixed $item Should be an array |
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* |
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* @return JsonRpcRequest |
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* |
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* @throws JsonRpcInvalidRequestException |
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*/ |
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public function denormalize($item) : JsonRpcRequest |
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{ |
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$this->validateArray($item, 'Item must be an array'); |
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// Validate json-rpc and method keys |
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$this->validateRequiredKey($item, self::KEY_JSON_RPC); |
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$this->validateRequiredKey($item, self::KEY_METHOD); |
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$request = new JsonRpcRequest( |
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$item[self::KEY_JSON_RPC], |
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$item[self::KEY_METHOD] |
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); |
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$this->bindIdIfProvided($request, $item); |
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$this->bindParamListIfProvided($request, $item); |
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return $request; |
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} |
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/** |
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* @param JsonRpcRequest $request |
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* @param array $item |
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* @return array |
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*/ |
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protected function bindIdIfProvided(JsonRpcRequest $request, array $item) |
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{ |
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/** If no id defined => request is a notification */ |
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if (isset($item[self::KEY_ID])) { |
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$request->setId( |
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$item[self::KEY_ID] == (string)((int)$item[self::KEY_ID]) |
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? (int)$item[self::KEY_ID] // Convert it in case it's a string containing an int |
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: (string)$item[self::KEY_ID] // Convert to string in all other cases |
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); |
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} |
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} |
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/** |
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* @param JsonRpcRequest $request |
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* @param array $item |
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* |
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* @throws JsonRpcInvalidRequestException |
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*/ |
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protected function bindParamListIfProvided(JsonRpcRequest $request, array $item) |
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{ |
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if (isset($item[self::KEY_PARAM_LIST])) { |
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$paramList = $item[self::KEY_PARAM_LIST]; |
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$this->validateArray($paramList, 'Parameter list must be an array'); |
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$request->setParamList($paramList); |
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} |
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} |
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/** |
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* @param mixed $value |
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* @param string $errorDescription |
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* |
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* @return array |
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* |
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* @throws JsonRpcInvalidRequestException |
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*/ |
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private function validateArray($value, string $errorDescription) : array |
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{ |
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if (!is_array($value)) { |
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throw new JsonRpcInvalidRequestException($value, $errorDescription); |
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} |
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return $value; |
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} |
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/** |
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* @param array $item |
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* @param string $key |
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* |
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* @throws JsonRpcInvalidRequestException |
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*/ |
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private function validateRequiredKey(array $item, string $key) |
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{ |
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if (!isset($item[$key])) { |
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throw new JsonRpcInvalidRequestException( |
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$item, |
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sprintf('"%s" is a required key', $key) |
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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
