func StartWatch(dir string, fileIndex *fileindex.SafeFileList) {
var err error
watcher, err = fsnotify.NewWatcher()
if err != nil {
log.Fatal(err)
}
fileList := BuildFileIndex(dir)
fileIndex.Copy(fileList)
mutex := new(sync.Mutex)
lock := sync.NewCond(mutex)
go func() {
for {
mutex.Lock()
lock.Wait()
fileIndex.UpdateHash()
log.Println("Updated hash")
time.Sleep(1 * time.Second)
mutex.Unlock()
}
}()
go func() {
defer watcher.Close() //This loop should run as long as the program is running
for event := range watcher.Event {
name, err := filepath.Rel(SandwichPath, event.Name)
fullName := filepath.Join(SandwichPath, name)
if err != nil {
log.Fatal(err)
}
switch {
case event.IsCreate():
info, err := os.Stat(fullName)
if err == nil && info.IsDir() {
fileList := BuildFileList("", fullName)
fileIndex.Concat(fileList)
log.Println(fullName + " was added to the manifest.")
} else if err == nil {
fileItem, err := GetFileItemName(fullName)
if err == nil { //Otherwise the file was deleted before we could create it
if utf8.ValidString(fileItem.FileName) {
fileList.Add(fileItem)
} else {
log.Println("Hey bra, you cannot have non-utf8 encoded file names")
}
}
}
case event.IsDelete():
fileIndex.Remove(name)
log.Println(name + " was removed from the manifest.")
case event.IsModify():
fileIndex.Remove(name)
fileItem, err := GetFileItemName(fullName)
if err == nil { //Otherwise the file was deleted before we could create it
if utf8.ValidString(fileItem.FileName) {
fileList.Add(fileItem)
log.Println(fullName + " was added to the manifest.")
} else {
log.Println("Hey bra, you cannot have non-utf8 encoded file names")
}
}
case event.IsRename():
fileIndex.Remove(name)
log.Println(name + " was removed from the manifest.")
}
lock.Signal()
}
log.Println("Watch loop exited")
}()
}
func MakePeerItem(ip net.IP, fileIndex *fileindex.SafeFileList) *addresslist.PeerItem {
return &addresslist.PeerItem{ip, fileIndex.IndexHash(), time.Now()}
}