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watcher.go
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watcher.go
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package controlplane
import (
"log"
"time"
"github.com/fsnotify/fsnotify"
)
type OperationType int
const (
Create OperationType = iota
Remove
Modify
)
type NotifyMessage struct {
Operation OperationType
FilePath string
}
func Watch(watcher *fsnotify.Watcher, filename string, notifyCh chan<- NotifyMessage) {
for {
select {
case event, ok := <-watcher.Events:
if !ok {
return
}
if event.Op&fsnotify.Write == fsnotify.Write {
notifyCh <- NotifyMessage{
Operation: Modify,
FilePath: event.Name,
}
} else if event.Op&fsnotify.Create == fsnotify.Create {
notifyCh <- NotifyMessage{
Operation: Create,
FilePath: event.Name,
}
} else if event.Op&fsnotify.Remove == fsnotify.Remove {
notifyCh <- NotifyMessage{
Operation: Remove,
FilePath: event.Name,
}
}
case err, ok := <-watcher.Errors:
if !ok {
return
}
log.Println("error:", err)
case <-time.Tick(time.Second * 3):
notifyCh <- NotifyMessage{
Operation: Modify,
FilePath: filename,
}
}
}
}