Example #1
0
func collect(sec int64, fns []func() []*model.MetricValue) {

	for {
	REST:
		time.Sleep(time.Duration(sec) * time.Second)

		hostname, err := g.Hostname()
		if err != nil {
			goto REST
		}

		mvs := []*model.MetricValue{}
		ignoreMetrics := g.Config().IgnoreMetrics

		for _, fn := range fns {
			items := fn()
			if items == nil {
				continue
			}

			if len(items) == 0 {
				continue
			}

			for _, mv := range items {
				if b, ok := ignoreMetrics[mv.Metric]; ok && b {
					continue
				} else {
					mvs = append(mvs, mv)
				}
			}
		}

		now := time.Now().Unix()
		for j := 0; j < len(mvs); j++ {
			mvs[j].Step = sec
			mvs[j].Endpoint = hostname
			mvs[j].Timestamp = now
		}

		g.SendToTransfer(mvs)

	}
}
Example #2
0
func configPushRoutes() {
	http.HandleFunc("/v1/push", func(w http.ResponseWriter, req *http.Request) {
		if req.ContentLength == 0 {
			http.Error(w, "body is blank", http.StatusBadRequest)
			return
		}

		decoder := json.NewDecoder(req.Body)
		var metrics []*model.MetricValue
		err := decoder.Decode(&metrics)
		if err != nil {
			http.Error(w, "connot decode body", http.StatusBadRequest)
			return
		}

		g.SendToTransfer(metrics)
		w.Write([]byte("success"))
	})
}
Example #3
0
func PluginRun(plugin *Plugin) {

	timeout := plugin.Cycle*1000 - 500
	fpath := filepath.Join(g.Config().Plugin.Dir, plugin.FilePath)

	if !file.IsExist(fpath) {
		log.Println("no such plugin:", fpath)
		return
	}

	debug := g.Config().Debug
	if debug {
		log.Println(fpath, "running...")
	}

	cmd := exec.Command(fpath)
	var stdout bytes.Buffer
	cmd.Stdout = &stdout
	var stderr bytes.Buffer
	cmd.Stderr = &stderr
	cmd.Start()

	err, isTimeout := sys.CmdRunWithTimeout(cmd, time.Duration(timeout)*time.Millisecond)

	errStr := stderr.String()
	if errStr != "" {
		logFile := filepath.Join(g.Config().Plugin.LogDir, plugin.FilePath+".stderr.log")
		if _, err = file.WriteString(logFile, errStr); err != nil {
			log.Printf("[ERROR] write log to %s fail, error: %s\n", logFile, err)
		}
	}

	if isTimeout {
		// has be killed
		if err == nil && debug {
			log.Println("[INFO] timeout and kill process", fpath, "successfully")
		}

		if err != nil {
			log.Println("[ERROR] kill process", fpath, "occur error:", err)
		}

		return
	}

	if err != nil {
		log.Println("[ERROR] exec plugin", fpath, "fail. error:", err)
		return
	}

	// exec successfully
	data := stdout.Bytes()
	if len(data) == 0 {
		if debug {
			log.Println("[DEBUG] stdout of", fpath, "is blank")
		}
		return
	}

	var metrics []*model.MetricValue
	err = json.Unmarshal(data, &metrics)
	if err != nil {
		log.Printf("[ERROR] json.Unmarshal stdout of %s fail. error:%s stdout: \n%s\n", fpath, err, stdout.String())
		return
	}

	g.SendToTransfer(metrics)
}