code: protected static void checkPositiveInteger(String configKey, int configValue) throws SofaRpcRuntimeException {
          if (configValue <= 0) {
              throw ExceptionUtils.buildRuntime(configKey, configValue + "", "must > 0");
          }
      }
docs: 检查数字是否为正整数（>0)
  
  @param configKey   配置项
  @param configValue 配置值
  @throws SofaRpcRuntimeException 非法异常