Function NewKeyValue

pkg/sorted/kv.go:228–251

NewKeyValue returns a KeyValue as defined by cfg. It returns an error of type NeedWipeError when the returned KeyValue should be fixed with Wipe.

(cfg jsonconfig.Obj)

// It returns an error of type NeedWipeError when the returned KeyValue should
// be fixed with Wipe.
func NewKeyValue(cfg jsonconfig.Obj) (KeyValue, error) {
	var s KeyValue
	var err error
	typ := cfg.RequiredString("type")
	ctor, ok := ctors[typ]
	if typ != "" && !ok {
		return nil, fmt.Errorf("Invalid sorted.KeyValue type %q", typ)
	}
	if ok {
		s, err = ctor(cfg)
		if err != nil {
			we, ok := err.(NeedWipeError)
			if !ok {
				return nil, fmt.Errorf("error from %q KeyValue: %v", typ, err)
			}
			if err := cfg.Validate(); err != nil {
				return nil, err
			}
			we.Msg = fmt.Sprintf("error from %q KeyValue: %v", typ, err)
			return s, we
		}
	}
	return s, cfg.Validate()
}

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