Exception 如何在Apache Thrift的基础上实现golang服务（有例外）？

我有一个服务节俭界面，用于

结果

方法，如下所示：

exception SomeException {
    1: string message;
}

string result(
    1: string token,
    2: string identifier
) throws (
    1: SomeException ex,
);

我如何在golang中正确实现这一点？我希望为这个节俭服务的客户正确抛出异常。

这里开始使用。本教程由以下部分组成：

如果客户端以这种方式将计算操作传递给服务器：

work := tutorial.NewWork()
work.Op = tutorial.Operation_DIVIDE
work.Num1 = 1
work.Num2 = 0
quotient, err := client.Calculate(1, work)
if err != nil {
    switch v := err.(type) {
    case *tutorial.InvalidOperation:
        fmt.Println("Invalid operation:", v)
    default:
        fmt.Println("Error during operation:", err)
    }
    return err
} else {
    fmt.Println("Whoa we can divide by 0 with new value:", quotient)
}

服务器应该抛出一个异常，如下所示。当传递

w.Op

的某个未知值时，也会发生类似的情况：

func (p *CalculatorHandler) Calculate(logid int32, w *tutorial.Work) (val int32, err error) {

switch w.Op {
    case tutorial.Operation_DIVIDE:
        if w.Num2 == 0 {
            ouch := tutorial.NewInvalidOperation()
            ouch.WhatOp = int32(w.Op)
            ouch.Why = "Cannot divide by 0"
            err = ouch
            return
        }
        val = w.Num1 / w.Num2
        break

    // other cases omitted

    default:
        ouch := tutorial.NewInvalidOperation()
        ouch.WhatOp = int32(w.Op)
        ouch.Why = "Unknown operation"
        err = ouch
        return
    }

    // more stuff omitted
}

---

简而言之，Thrift接口实现了

error

（

error（）string

函数）。因此可以像任何go

error

一样返回，通常像

return nil，err

func (p *CalculatorHandler) Calculate(logid int32, w *tutorial.Work) (val int32, err error) {

switch w.Op {
    case tutorial.Operation_DIVIDE:
        if w.Num2 == 0 {
            ouch := tutorial.NewInvalidOperation()
            ouch.WhatOp = int32(w.Op)
            ouch.Why = "Cannot divide by 0"
            err = ouch
            return
        }
        val = w.Num1 / w.Num2
        break

    // other cases omitted

    default:
        ouch := tutorial.NewInvalidOperation()
        ouch.WhatOp = int32(w.Op)
        ouch.Why = "Unknown operation"
        err = ouch
        return
    }

    // more stuff omitted
}