how can i writter log to file? about go-micro HOT 4 CLOSED

import (
	microLogrus "github.com/go-micro/plugins/v4/logger/logrus"
	microLogger "go-micro.dev/v4/logger"

	"github.com/sirupsen/logrus"
)

// caller returns string presentation of log caller which is formatted as
// `/path/to/file.go:line_number`. e.g. `/internal/app/api.go:25`
func caller() func(*runtime.Frame) (function string, file string) {
	return func(f *runtime.Frame) (function string, file string) {
		return "", fmt.Sprintf("%s:%d", f.File, f.Line)
	}
}

func main() {
        // open the logfile.
        f, err := os.OpenFile("testlogrus.log", os.O_APPEND | os.O_CREATE | os.O_RDWR, 0600)
                if err != nil {
                fmt.Printf("error opening file: %v", err)
        }

        // don't forget to close it
        defer f.Close()

        logger = logrus.New()
	logger.Out = f
	logger.Level = logrus.TraceLevel

        // An expensive but usefull call for debugging.
	logger.SetReportCaller(true)

	logger.SetFormatter(&logrus.JSONFormatter{
		CallerPrettyfier: caller(),
		FieldMap: logrus.FieldMap{
			logrus.FieldKeyFile: "caller",
		},
	})

	// The important line here, this replaces the go-micro logger with logrus.
	microLogger.DefaultLogger = microLogrus.NewLogger(microLogrus.WithLogger(logger))
	
	// your code here ....
}