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root.go
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root.go
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package commands
import (
"fmt"
"os"
log "github.com/sirupsen/logrus"
"github.com/spf13/cobra"
"github.com/spf13/viper"
)
var cfgFile string
var RootCmd = &cobra.Command{
Use: "automate-gateway",
Short: "Chef Automate API gRPC and REST gateway",
}
// 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)
// global config
RootCmd.PersistentFlags().StringVar(&cfgFile, "config", "", "config file (default is $HOME/.automate-gateway.yaml)")
}
// initConfig reads in config file and ENV variables if set.
func initConfig() {
if cfgFile != "" {
// enable ability to specify config file via flag
viper.SetConfigFile(cfgFile)
} else {
// name of config file (without extension)
viper.SetConfigName(".api-gateway")
// adding home directory as first search path
viper.AddConfigPath("$HOME")
}
viper.SetEnvPrefix("automate_gateway")
// read in environment variables that match
viper.AutomaticEnv()
err := viper.ReadInConfig()
if err != nil {
log.WithFields(log.Fields{
"file": viper.ConfigFileUsed(),
}).Info("Error reading config file")
return
}
}