| 7 | ) |
| 8 | |
| 9 | func Watch(restart string, done <-chan struct{}, change func()) error { |
| 10 | lastStat, err := os.Stat(restart) |
| 11 | if err != nil { |
| 12 | return err |
| 13 | } |
| 14 | |
| 15 | watcher, err := fsnotify.NewWatcher() |
| 16 | if err != nil { |
| 17 | return err |
| 18 | } |
| 19 | |
| 20 | err = watcher.Add(restart) |
| 21 | if err != nil { |
| 22 | return err |
| 23 | } |
| 24 | |
| 25 | defer watcher.Close() |
| 26 | |
| 27 | for { |
| 28 | select { |
| 29 | case <-watcher.Events: |
| 30 | cur, err := os.Stat(restart) |
| 31 | if err != nil { |
| 32 | return err |
| 33 | } |
| 34 | |
| 35 | if cur.ModTime().After(lastStat.ModTime()) { |
| 36 | change() |
| 37 | } |
| 38 | case <-done: |
| 39 | return nil |
| 40 | } |
| 41 | } |
| 42 | } |