func WatchForChanges(onChange func(id string)) {
// Create watcher
watcher, err := inotify.NewWatcher()
if err != nil {
log.Printf("warning: Cannot create inotify.Watcher")
return
}
// watch dirs in levels 1-3 from the roots
watchList := []string{} // prevent walkDirs from generating events
for _, root := range roots {
watchList = append(watchList, root)
walkDirs(root, func(reldir string, level int) {
watchList = append(watchList, filepath.Join(root, reldir))
})
}
for _, dir := range watchList {
watcher.Watch(dir)
}
// go wait for events
go func() {
for {
select {
case ev := <-watcher.Event:
rel := removeRoot(ev.Name)
if onChange != nil && isChange(ev) {
if !isDir(ev) {
rel = filepath.Dir(rel)
}
id := ToID(rel)
onChange(id)
if isDir(ev) {
onChange(parentID(id))
}
}
// watch new dirs
if isDir(ev) {
lv := numLevels(rel)
if lv > 0 && lv < 4 {
watcher.Watch(ev.Name)
}
}
case err := <-watcher.Error:
log.Printf("watcher error: %s", err)
}
}
}()
}
func startWatcher() {
// Start the event loops. Use inotify to watch the configfile and each
// repository path.
Config, e := conf.ReadConfigFile(ConfigName)
if e != nil {
log.Fatal(e)
}
watcher, e := inotify.NewWatcher()
if e != nil {
log.Fatal(e)
}
log.Println("watching configfile")
e = watcher.Watch(ConfigName)
if e != nil {
log.Fatal(e)
}
Locks = make([]int64, RemoteCount)
Paths = make([]string, RemoteCount)
for i := 1; i <= RemoteCount; i++ {
section := strings.Join([]string{"remote-", strconv.Itoa(i)}, "")
if !Config.HasOption(section, "path") {
log.Println("doesnt have path")
continue
}
path, e := Config.GetRawString(section, "path")
if e != nil {
log.Fatal(e)
}
log.Println("watching path", path)
e = watcher.Watch(path)
if e != nil {
log.Fatal(e)
}
Locks[i-1] = 0
Paths[i-1] = path
}
for {
select {
case ev := <-watcher.Event:
go handleEvent(ev)
case err := <-watcher.Error:
log.Println("error:", err)
}
}
}
func watchTemplates() {
watcher, err := inotify.NewWatcher()
if err != nil {
log.Printf("Warning: Cannot watch templates.")
}
watcher.Watch(srvdir + "/templates")
go func() {
for {
select {
case ev := <-watcher.Event:
if isChange(ev) {
fmt.Printf("Changed: %s\n", ev.Name)
readTemplates()
cache.Touch("/templates")
}
}
}
}()
}