Package multierr introduce a simple way to join multiple errors as an error.
Run go get github.com/getogrand/multierr.
The multierr.Join() combine multiple errors to an error.
You can report multiple errors as an joined error to the caller using multierr.Join().
import "github.com/getogrand/multierr"
var ee []error
up := ReservationUserPush{}
n := ReservationAlarmNoti{}
if err := up.Send(); err != nil {
ee = append(ee,
fmt.Errorf("send reservation %v push to user: %v", n.Reservation.ID, err))
}
if err := n.sendShopAlarm(); err != nil {
ee = append(ee, fmt.Errorf(
"send shop alarm message of reservation %v: %v", n.Reservation.ID, err))
}
if err := n.sendUserAlarm(); err != nil {
ee = append(ee, fmt.Errorf(
"send user alarm message of reservation %v: %v", n.Reservation.ID, err))
}
return multierr.Join(ee) // error{"3 errors occured: send reservation 1 push to user: connection fail, send shop alarm message of reservation 1: connection fail, send user alarm message of reservation 1: connection fail"}It is really useful when you run errorable operation in for-loop.
import "github.com/getogrand/multierr"
func SliceConvAtoi32(aa []string) ([]int32, error) {
errs := []error{}
ii := []int32{}
for _, a := range aa {
i, err := strconv.Atoi(a)
if err != nil {
errs = append(errs, fmt.Errorf("convert %q to int: %v", a, err))
continue
}
ii = append(ii, int32(i))
}
if len(errs) > 0 {
return []int32{}, multierr.Join(errs)
}
return ii, nil
}Extracted From heybeauty
Released under the MIT License