Function NewKeyValueMaybeWipe

pkg/sorted/kv.go:255–272

NewKeyValueMaybeWipe calls NewKeyValue and wipes the KeyValue if, and only if, NewKeyValue has returned a NeedWipeError.

(cfg jsonconfig.Obj)

// NewKeyValueMaybeWipe calls NewKeyValue and wipes the KeyValue if, and only
// if, NewKeyValue has returned a NeedWipeError.
func NewKeyValueMaybeWipe(cfg jsonconfig.Obj) (KeyValue, error) {
	kv, err := NewKeyValue(cfg)
	if err == nil {
		return kv, nil
	}
	if _, ok := err.(NeedWipeError); !ok {
		return nil, err
	}
	wiper, ok := kv.(Wiper)
	if !ok {
		return nil, fmt.Errorf("storage type %T needs wiping because %v. But it doesn't support sorted.Wiper", err, kv)
	}
	we := err
	if err := wiper.Wipe(); err != nil {
		return nil, fmt.Errorf("sorted key/value type %T needed wiping because %v. But could not wipe: %v", kv, we, err)
	}
	return kv, nil
}

// Foreach runs fn for each key/value pair in kv. If fn returns an error,
// that same error is returned from Foreach and iteration stops.