logrus log to file

logger.go

package becak

import (
	"fmt"
	"github.com/sirupsen/logrus"
	"os"
)

type x struct {
	outfile *os.File
}

var (
	outfile *os.File
	logger *logrus.Logger
)


func xhandler(x int) {
	fmt.Println("exit handler called")
	err := outfile.Close()
	if err != nil {
		fmt.Printf("error at xhandler: %s\n", err)
	} else {
		fmt.Println("file closed")
	}

	fmt.Printf("wololo %d", x)
}

func Initlogging(filename string) *logrus.Logger {
	var err error
	outfile, err = os.OpenFile(filename, os.O_WRONLY | os.O_APPEND | os.O_CREATE, 0755)

	logger = logrus.New()
	logger.ExitFunc = xhandler
	if err != nil {
		panic(err)
	}
	logger.SetOutput(outfile)
	return logger
}

main.go

package main

import "becak"

func main() {

	l := becak.Initlogging("./all.log")
	l.Info("abcde")


	l.Info("abcde")
	l.Info("abcde")
	l.Info("abcde")
	l.Info("abcde")
	l.Info("abcde")
	l.Info("abcde")
	l.Info("abcde")
	l.Info("abcde")
	l.Info("abcde")
	l.Info("abcde")

	l.Exit(1)
}

main_defer.go

package main

import (
	"becak"
)

func main() {
	l := becak.Initlogging("./all.log")
	defer l.Exit(1)



	l.Info("abcde")
	l.Info("abcde")
	l.Info("abcde")
	l.Info("abcde")
	l.Info("abcde")
	l.Info("abcde")
	l.Info("abcde")
	l.Info("abcde")
	l.Info("abcde")
	l.Info("abcde")
	l.Info("abcde")

}