在laravel中实现事务回滚的方法

public static function createDeal($to_status, $params, $new_balance, $update = true)
  {
    DB::beginTransaction();
 
 
    try {
      $update_order_status = DB::table('wallet_order')
                  - where('order_id', $params['order_id'])
                  - update(['to_status' =  $to_status, 'update_time' =  $params['pay_time']]);
      if (!$update_order_status) {
        throw new Exception("update order error");
      }
 
 
      $create_deal_status = DB::table('wallet_deal')
                  - insert($params);
      if (!$create_deal_status) {
        throw new Exception("create deal error");
        
      }
 
 
      if ($update) {        
        $update_manage_status = self::updateManage(['balance' =  $new_balance, 'update_time' =  $params['pay_time']], $params['from_user']);
        if (!$update_manage_status) {
          throw new Exception("update manage error");
        }
      } else {
        $manage_params = [
          'user_id' =  intval($params['from_user']),
          'balance' =  $new_balance,
          'add_time' =  $params['pay_time'],
          'update_time' =  $params['pay_time'],
        ];
        $create_manage_status = self::createManage($manage_params);
        if (!$create_manage_status) {
          throw new Exception("create manage error");
        }
      }
      DB::commit();
    } catch (Exception $e) {

		//异常处理进行回滚，自己想对应的业务
      DB::rollback();
      $trouble_params = [
        'order_id' =  $params['order_id'],
        'deal_id' =  $params['deal_id'],
        'from_user' =  $params['from_user'],
        'to_user' =  $params['to_user'],
        'total_amount' =  $params['total_amount'],
        'add_time' =  $params['pay_time'],
        'type' =  $params['type'],
        'to_status' =  $to_status
      ];
      DB::connection('mongodb')
        - table('wallet_trouble')
        - insert($trouble_params);
    } finally {
      self::createLog($params, $to_status);
    }
  }