How to get the stack trace pointing to actual error reason

Question

Let\'s say I have some code like this:

value, err := some3rdpartylib.DoSomething()
if err != nil {
    panic(err)
}

In case err != ni

Answer 1

Take a look at: https://github.com/efimovalex/stackerr

Is this the thing you are looking for?

package main

import "github.com/efimovalex/stackerr"
import "fmt"

func f1() *stackerr.Err {
    err := stackerr.Error("message")
    return err.Stack()
}

func f2() *stackerr.Err {
    err := f1()
    return err.Stack()
}

type t1 struct{}

func (t *t1) f3() *stackerr.Err {
    err := f2()
    return err.Stack()
}

func main() {
    ts := t1{}
    err := ts.f3()

    err.Log()
}

Result:

2017/08/31 12:13:47 Error Stacktrace:
-> github.com/efimovalex/stackerr/example/main.go:25 (main.main)
-> github.com/efimovalex/stackerr/example/main.go:19 (main.(*t1).f3)
-> github.com/efimovalex/stackerr/example/main.go:12 (main.f2)
-> github.com/efimovalex/stackerr/example/main.go:7 (main.f1)