public async Task <string> CreateOrder2([FromQuery] string goodsName, [FromQuery] string customerName, [FromQuery] Int64 amount)
{
var form = new CreateOrderSagaData
{
CreateOrder = new order_service.CreateOrderRequest
{
CustomerName = customerName,
GoodsName = goodsName,
Amount = amount
}
};
// TODO: 把sagaContext和start/commit/rollback玻璃出来，业务代码简单写就可以了
using (var sagaContext = new SagaContext(_sagaCollaborator, _logger))
{
try
{
await sagaContext.Start(form);
sagaContext.Bind(); // 把saga session绑定到当前async上下文中
await _createOrderSaga.createOrder(form);
await _createOrderSaga.reserveCustomer(form);
await _createOrderSaga.addLockedBalanceToMerchant(form);
await _createOrderSaga.approveOrder(form);
await _createOrderSaga.approveAddLockedBalanceToMerchant(form);
await _createOrderSaga.addOrderHistory(form);
// 也可以在这里加上其他各种业务逻辑
await sagaContext.Commit();
return(form.OrderId);
}
catch (Exception e)
{
_logger.LogError("CreateOrder2 error", e);
await sagaContext.Rollback();
if (form.RejectionReason != null)
{
return(form.RejectionReason.ToString());
}
return(e.Message);
}
}
}