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package watcher
import (
"time"
"gopkg.in/fsnotify.v0"
)
type Batcher struct {
*fsnotify.Watcher
interval time.Duration
done chan struct{}
Event chan []*fsnotify.FileEvent // Events are returned on this channel
}
func New(interval time.Duration) (*Batcher, error) {
watcher, err := fsnotify.NewWatcher()
batcher := &Batcher{}
batcher.Watcher = watcher
batcher.interval = interval
batcher.done = make(chan struct{}, 1)
batcher.Event = make(chan []*fsnotify.FileEvent, 1)
if err == nil {
go batcher.run()
}
return batcher, err
}
func (b *Batcher) run() {
tick := time.Tick(b.interval)
evs := make([]*fsnotify.FileEvent, 0)
OuterLoop:
for {
select {
case ev := <-b.Watcher.Event:
evs = append(evs, ev)
case <-tick:
if len(evs) == 0 {
continue
}
b.Event <- evs
evs = make([]*fsnotify.FileEvent, 0)
case <-b.done:
break OuterLoop
}
}
close(b.done)
}
func (b *Batcher) Close() {
b.done <- struct{}{}
b.Watcher.Close()
}
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