package alarm import ( "alrm/alarm/email" "fmt" ) type Alarm interface { Parse(string) (bool, error) Alarm(string, string, string, error) error } func NewAlarm(name string, typename string) (Alarm, error) { switch typename { case "email": return email.NewAlarmEmail(name), nil default: return nil, fmt.Errorf("unknown alarm name \"%s\"", name) } }