secret.go

package flagext

type Secret struct {
	Value string
}

// String implements flag.Value
func (v Secret) String() string {
	return v.Value
}

// Set implements flag.Value
func (v *Secret) Set(s string) error {
	v.Value = s
	return nil
}

// UnmarshalYAML implements yaml.Unmarshaler.
func (v *Secret) UnmarshalYAML(unmarshal func(interface{}) error) error {
	var s string
	if err := unmarshal(&s); err != nil {
		return err
	}

	return v.Set(s)
}

// MarshalYAML implements yaml.Marshaler.
func (v Secret) MarshalYAML() (interface{}, error) {
	if len(v.Value) == 0 {
		return "", nil
	}
	return "********", nil
}