forked from uxbh/ztdns
/
root.go
59 lines (45 loc) · 1.63 KB
/
root.go
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// Copyright © 2017 uxbh
// This file is part of github.com/uxbh/ztdns.
package cmd
import (
"fmt"
"os"
"github.com/spf13/cobra"
"github.com/spf13/viper"
)
var cfgFile string
// RootCmd represents the base command when called without any subcommands
var RootCmd = &cobra.Command{
Use: "ztdns",
Short: "Zerotier DNS Server",
Long: `ztDNS is a dedicated DNS server for ZeroTier networks.
This application will serve DNS requests for the members of a ZeroTier
network for both A (IPv4) and AAAA (IPv6) requests`,
}
// Execute adds all child commands to the root command sets flags appropriately.
// This is called by main.main(). It only needs to happen once to the rootCmd.
func Execute() {
if err := RootCmd.Execute(); err != nil {
fmt.Println(err)
os.Exit(-1)
}
}
func init() {
cobra.OnInitialize(initConfig)
RootCmd.PersistentFlags().Bool("debug", false, "enable debug messages")
viper.BindPFlag("debug", RootCmd.PersistentFlags().Lookup("debug"))
RootCmd.PersistentFlags().StringVar(&cfgFile, "config", "", "config file (default is $HOME/.ztdns.yaml)")
}
// initConfig reads in config file and ENV variables if set.
func initConfig() {
if cfgFile != "" { // enable ability to specify config file via flag
viper.SetConfigFile(cfgFile)
}
viper.SetConfigName(".ztdns") // name of config file (without extension)
viper.AddConfigPath(".") // adding current directory as first search path
viper.AddConfigPath("$HOME") // adding home directory as second search path
viper.SetEnvPrefix("ztdns")
viper.AutomaticEnv() // read in environment variables that match
// If a config file is found, read it in.
viper.ReadInConfig()
}