func ioWorker() {
var err error
for {
select {
case task := <-io_task_chan:
if task.method == IO_TASK_M_READ {
if args, ok := task.args.(*readfile_t); ok {
args.data, err = ioutil.ReadFile(args.filename)
task.done <- err
}
} else if task.method == IO_TASK_M_WRITE {
//filename must not exist
if args, ok := task.args.(*g.File); ok {
baseDir := file.Dir(args.Filename)
if err = file.InsureDir(baseDir); err != nil {
task.done <- err
}
task.done <- writeFile(args.Filename, args.Body, 0644)
}
} else if task.method == IO_TASK_M_FLUSH {
if args, ok := task.args.(*flushfile_t); ok {
task.done <- flushrrd(args.filename, args.items)
}
} else if task.method == IO_TASK_M_FETCH {
if args, ok := task.args.(*fetch_t); ok {
args.data, err = fetch(args.filename, args.cf, args.start, args.end, args.step)
task.done <- err
}
}
}
}
}
// flush to disk from memory
// 最新的数据在列表的最后面
// TODO fix me, filename fmt from item[0], it's hard to keep consistent
func Flush(filename string, items []*cmodel.GraphItem) error {
if items == nil || len(items) == 0 {
return errors.New("empty items")
}
lock := L.GetLock(filename)
lock.Lock()
defer lock.Unlock()
if !g.IsRrdFileExist(filename) {
baseDir := file.Dir(filename)
err := file.InsureDir(baseDir)
if err != nil {
return err
}
err = create(filename, items[0])
if err != nil {
return err
}
}
return update(filename, items)
}
func configPluginRoutes() {
http.HandleFunc("/plugin/update", func(w http.ResponseWriter, r *http.Request) {
if !g.Config().Plugin.Enabled {
w.Write([]byte("plugin not enabled"))
return
}
dir := g.Config().Plugin.Dir
parentDir := file.Dir(dir)
file.InsureDir(parentDir)
if file.IsExist(dir) {
// git pull
cmd := exec.Command("git", "pull")
cmd.Dir = dir
err := cmd.Run()
if err != nil {
w.Write([]byte(fmt.Sprintf("git pull in dir:%s fail. error: %s", dir, err)))
return
}
} else {
// git clone
cmd := exec.Command("git", "clone", g.Config().Plugin.Git, file.Basename(dir))
cmd.Dir = parentDir
err := cmd.Run()
if err != nil {
w.Write([]byte(fmt.Sprintf("git clone in dir:%s fail. error: %s", parentDir, err)))
return
}
}
w.Write([]byte("success"))
})
http.HandleFunc("/plugin/reset", func(w http.ResponseWriter, r *http.Request) {
if !g.Config().Plugin.Enabled {
w.Write([]byte("plugin not enabled"))
return
}
dir := g.Config().Plugin.Dir
if file.IsExist(dir) {
cmd := exec.Command("git", "reset", "--hard")
cmd.Dir = dir
err := cmd.Run()
if err != nil {
w.Write([]byte(fmt.Sprintf("git reset --hard in dir:%s fail. error: %s", dir, err)))
return
}
}
w.Write([]byte("success"))
})
http.HandleFunc("/plugins", func(w http.ResponseWriter, r *http.Request) {
//TODO: not thread safe
RenderDataJson(w, plugins.Plugins)
})
}
// flush to disk from memory
// 最新的数据在列表的最后面
// TODO fix me, filename fmt from item[0], it's hard to keep consistent
func flushrrd(filename string, items []*cmodel.GraphItem) error {
if items == nil || len(items) == 0 {
return errors.New("empty items")
}
if !g.IsRrdFileExist(filename) {
baseDir := file.Dir(filename)
err := file.InsureDir(baseDir)
if err != nil {
return err
}
err = create(filename, items[0])
if err != nil {
return err
}
}
return update(filename, items)
}