error_handling.go

package erratum

func Use(o ResourceOpener, input string) (err error) {
	var res Resource

	if res, err = o(); err != nil {
		if _, ok := err.(TransientError); ok {
			return Use(o, input)
		}
		return
	}

	defer res.Close()
	defer func() {
		if r := recover(); r != nil {
			switch e := r.(type) {
			case FrobError:
				res.Defrob(e.defrobTag)
				err = e
			case error:
				err = e
			}
		}
	}()

	res.Frob(input)
	return err
}