Golang Cobra Bind Env

gistfile1.txt

// Bind an environment variable to a Cobra CLI argument
func bindEnv(key string, defaultValue ...any) {
	envvarName := strings.Replace(key, "-", "_", -1)
	envvarName = strings.ToUpper(envvarName)

	err := viper.BindEnv(key, envvarName)
	cobra.CheckErr(err)

	for _, val := range defaultValue {
		viper.SetDefault(key, val)
	}
}

func init() {
	rootCmd.AddCommand(runCmd)

  // This will look for an envvar called SOME_KEY and give a default value of "some-value"
	bindEnv("some-key", "some-value")
	rootCmd.Flags().StringP("some-key", "k", viper.GetString("some-key"), "This is some value set as a Cobra argument")
}