1package main
2
3import "time"
4
5// retry calls fn up to n times, sleeping between attempts.
6func retry(n int, delay time.Duration, fn func() error) error {
7	var err error
8	for i := 0; i < n; i++ {
9		if err = fn(); err == nil {
10			return nil
11		}
12		time.Sleep(delay)
13	}
14	return err
15}