Hi Alex,
I see your problem is more like merging errors rather than wrapping them.
Indeed I don't see any way you could merge 2 errors with the new `
*fmt.Errorf*`
I believe what you want is something which could hold 2 errors, like
type myError struct {
msg string // some additional msg
current error // Layer1Error
cause error // Layer2Error
}
but in that case, you are handling it by yourself, instead of delegating it
to fmt.Errorf.
What I see as a possibility would be something like:
var (
Layer1Error = errors.New("some error on layer 1: %w")
Layer2Error = errors.New("some error on layer 2")
)
func callLayer1Function() error {
err := callLayer2Function()
// how to not lose layer2 error but also append a new layer1 error ?
// this does not work, since you fully lose layer1 error
// with pkg/err
return fmt.Errorf(Layer1Error.Error(), Layer1Error)
}
However it makes pointles to have `Layer1Error` as an error, it can be juts
a string.
Best,
Anderson
On Friday, 9 August 2019 15:39:24 UTC+2, Alex wrote:
>
> Sorry, mixed things up in the code with layer1 and layer2...
>
>
> var (
> Layer1Error = errors.New("some error on layer 1")
> Layer2Error = errors.New("some error on layer 2")
> )
>
> func main() {
> err := callLayer1Function()
>
> // do something with error
> }
>
> func callLayer1Function() error {
> err := callLayer2Function()
>
> // how to not lose layer2 error but also append a new layer1 error ?
> // this does not work, since you fully lose layer1 error
> // with pkg/err
> return fmt.Errorf("some specific layer 1 error message: %w", Layer1Error)
> }
>
> func callLayer2Function() error {
> // wrap an error of Layer2 here
> return fmt.Errorf("some specific layer2 error message: %w", Layer2Error)
> }
>
>
>
--
You received this message because you are subscribed to the Google Groups
"golang-nuts" group.
To unsubscribe from this group and stop receiving emails from it, send an email
to golang-nuts+unsubscr...@googlegroups.com.
To view this discussion on the web visit
https://groups.google.com/d/msgid/golang-nuts/08858872-57b1-45a0-86f9-5339a10592fb%40googlegroups.com.
