package config import ( "context" "fmt" "log" "reflect" "time" "github.com/heetch/confita" "github.com/heetch/confita/backend" "github.com/heetch/confita/backend/env" "github.com/heetch/confita/backend/flags" ) // Config is the exporter CLI configuration. type Config struct { PIHoleHostname string `config:"pihole_hostname"` PIHolePassword string `config:"pihole_password"` Port string `config:"port"` Interval time.Duration `config:"interval"` } func getDefaultConfig() *Config { return &Config{ PIHoleHostname: "127.0.0.1", PIHolePassword: "", Port: "9617", Interval: 10 * time.Second, } } // Load method loads the configuration by using both flag or environment variables. func Load() *Config { loaders := []backend.Backend{ env.NewBackend(), flags.NewBackend(), } loader := confita.NewLoader(loaders...) cfg := getDefaultConfig() err := loader.Load(context.Background(), cfg) if err != nil { panic(err) } cfg.show() return cfg } func (c Config) show() { val := reflect.ValueOf(&c).Elem() log.Println("------------------------------------") log.Println("- PI-Hole exporter configuration -") log.Println("------------------------------------") for i := 0; i < val.NumField(); i++ { valueField := val.Field(i) typeField := val.Type().Field(i) log.Println(fmt.Sprintf("%s : %v", typeField.Name, valueField.Interface())) } log.Println("------------------------------------") }