func EventHandler(watcher *inotify.Watcher) {
// TODO: make into a slice to cache multiple cookies
var moveFromEvent *inotify.Event
for {
select {
case event := <-watcher.Event:
switch {
default:
fmt.Println(event, time.Now())
case event.Mask == DIR_CREATE:
// This checks if a newly created directory has children.
// If it does it adds them to the watch
// This is to deal with the 'mdkir -p' problem
paths := CollectPaths([]string{event.Name})
if len(paths) > 1 {
for i := 0; i < len(paths); i++ {
watcher.Watch(paths[i])
}
} else {
watcher.Watch(event.Name)
}
fmt.Println(event.String(), time.Now())
case event.Mask == FILE_CREATE:
// Create encryption key, put into keymanager
// Upload as if a modify event
fmt.Println(event.String(), time.Now())
case event.Mask == FILE_MODIFY:
// Encrypt && upload
fmt.Println(event.String(), time.Now())
case event.Mask == DIR_DELETE:
// Signal server for a delete
watcher.RemoveWatch(event.Name)
fmt.Println(event.String(), time.Now())
case event.Mask == FILE_DELETE:
// Signal server for a delete, if has children, delete them as well.
// This would present a case where the parent is deleted first and the
// child delete events come after.
fmt.Println(event.String(), time.Now())
case event.Mask == DIR_MOVE_FROM:
// When a dir is moved this will trigger possibly a lot more move events if there are lots of children
// This is another reason for the cookie cache, anytime a move event happens, append the cookie.
// Don't make it a static size.
moveFromEvent = event
watcher.RemoveWatch(event.Name)
fmt.Println(event.String(), time.Now())
case event.Mask == DIR_MOVE_TO:
if event.Cookie == moveFromEvent.Cookie {
watcher.Watch(event.Name)
fmt.Println("\t", event.String(), time.Now())
}
case event.Mask == FILE_MOVE_FROM:
// Check stored cookie from last move event, if it is the same, follow through with the move.
// TODO: make this a cookie cache since we can have multiple storage Roots, this could cause misses of move events
moveFromEvent = event
fmt.Println(event.String(), time.Now())
case event.Mask == FILE_MOVE_TO:
if event.Cookie == moveFromEvent.Cookie {
fmt.Println("\t", event.String(), time.Now())
}
}
case err := <-watcher.Error:
fmt.Println("WATCHER ERROR: ", err)
}
}
}
