func (n *Notifier) Watch(o Observer) {
var err error
var abspath string
for _, basePath := range o.Path() {
abspath, err = filepath.Abs(basePath)
if err != nil {
ERROR.Println("create watcher error:", err)
continue
}
if n.contain(abspath) {
continue
}
var watcher *fsnotify.Watcher
watcher, err = fsnotify.NewWatcher()
//collect 100 events
watcher.Event = make(chan *fsnotify.FileEvent, 200)
//collect 10 error
watcher.Error = make(chan error, 20)
obsWatcher := &observerWatcher{o, watcher, abspath}
n.watchers = append(n.watchers, obsWatcher)
var ignoreObserver IgnoreObserver = nil
var isIgnoreObserver bool
ignoreObserver, isIgnoreObserver = o.(IgnoreObserver)
watcher.Watch(abspath)
err = filepath.Walk(abspath, func(path string, info os.FileInfo, err error) error {
if err != nil {
return err
}
if !info.IsDir() {
return nil
}
if isIgnoreObserver {
if info.IsDir() && ignoreObserver.IgnoreDir(info) {
return filepath.SkipDir
}
}
watcher.Watch(path)
return nil
})
if err != nil {
ERROR.Println("watch error:", err)
}
}
}
