/
root.go
73 lines (61 loc) · 2.25 KB
/
root.go
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package commands
import (
"os"
log "github.com/sirupsen/logrus"
"github.com/spf13/cobra"
"github.com/spf13/viper"
)
var cfgFile string
// RootCmd is the command runner.
var RootCmd = &cobra.Command{
Use: "event-feed-service",
Short: "Chef Automate Event Feed Service",
SilenceUsage: true,
SilenceErrors: true,
}
// 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 {
log.Error(err)
os.Exit(1)
}
}
func init() {
cobra.OnInitialize(initConfig)
// global config
RootCmd.PersistentFlags().StringVar(&cfgFile, "config", "", "config file (default is $HOME/.event-feed-service.toml)")
RootCmd.PersistentFlags().String("root-cert", "", "path to CA")
RootCmd.PersistentFlags().String("key", "", "path to key")
RootCmd.PersistentFlags().String("cert", "", "path to cert")
// https://github.com/spf13/viper/blob/7a605a50e69cd1ea431c4a1e6eebe9b287ef6de4/viper.go#L939
// err is non-nil when the flag doesn't exist. panic here should get caught quickly by Ci.
err := viper.BindPFlag("cert", RootCmd.PersistentFlags().Lookup("cert"))
if err != nil {
panic("viper configuration does not match command line flags")
}
err = viper.BindPFlag("root-cert", RootCmd.PersistentFlags().Lookup("root-cert"))
if err != nil {
panic("viper configuration does not match command line flags")
}
err = viper.BindPFlag("key", RootCmd.PersistentFlags().Lookup("key"))
if err != nil {
panic("viper configuration does not match command line flags")
}
}
// initConfig reads in config file and ENV variables if set.
func initConfig() {
viper.SetConfigName(".event-feed-service") // name of config file (without extension)
viper.AddConfigPath("$HOME") // adding home directory as first search path
viper.AddConfigPath(".")
// override default config file if config is passed in via cli
if cfgFile != "" {
viper.SetConfigFile(cfgFile)
}
// If a config file is found, read it in.
if err := viper.ReadInConfig(); err == nil {
log.WithField("file", viper.ConfigFileUsed()).Info("Using config file")
}
// Override our config with any matching environment variables
viper.AutomaticEnv()
}