golang_enum.go

var stackStatusValues []StackStatus

type StackStatus string

//goland:noinspection GoUnusedGlobalVariable
var (
	StackStatusDeleteInProgress = newStackStatus("DELETE_IN_PROGRESS")
	StackStatusCreateComplete   = newStackStatus("CREATE_COMPLETE")
	StackStatusDeleteFailed     = newStackStatus("DELETE_FAILED")
	StackStatusDeleteComplete   = newStackStatus("DELETE_COMPLETE")
)

func newStackStatus(s string) StackStatus {
	ss := StackStatus(s)
	stackStatusValues = append(stackStatusValues, ss)
	return ss
}

func (c *StackStatus) String() string {
	return string(*c)
}

func ParseStackStatus(s string) (StackStatus, error) {
	for _, v := range stackStatusValues {
		if s == v.String() {
			return StackStatus(v), nil
		}
	}

	return "", fmt.Errorf("no StackStatus exists for value '%s'", s)
}

// ---
// DEMO
// ---
func main() {
	myenum := StackStatusDeleteInProgress
	fmt.Println(myenum)

	my2 := "DELETE_FAILED"
	ss2, err := ParseStackStatus(my2)
	if err != nil {
	    fmt.Printf("ERR: %s\n", err)
	}

	fmt.Println(ss2)

	my3 := "DELETE_FAILED2"
	ss3 , err := ParseStackStatus(my3)
	if err != nil {
		fmt.Printf("ERR: %s\n", err)
	}

	fmt.Println(ss3)
}