blog_20171201_use_glog_with_cobra.go

package main

import (
        goflag "flag"

        "github.com/golang/glog"
        "github.com/spf13/cobra"
        flag "github.com/spf13/pflag"
)

var (
        rootCmd = &cobra.Command{
                Long: "Use glog with cobra.",
                Run:  echo,
        }

        str string
)

func init() {
        rootCmd.PersistentFlags().StringVar(&str, "echo", "hello", "echo string")
        flag.CommandLine.AddGoFlagSet(goflag.CommandLine)
}

func echo(cmd *cobra.Command, args []string) {
        goflag.Parse()
        glog.Info("echo (info): ", str)
        glog.Warning("echo (warn): ", str)
        glog.Error("echo (error): ", str)
}

func main() {
        err := rootCmd.Execute()
        if err != nil {
                glog.Error(err)
        }
}