Example #1
0
func post(in <-chan []LM) {
	for metrics := range in {
		if len(metrics) < 1 {
			fmt.Printf("at=%q\n", "post.empty.metrics")
			continue
		}
		token := store.Token{Id: metrics[0].Token}
		token.Get()
		payload := LP{metrics}
		j, err := json.Marshal(payload)
		postBody := bytes.NewBuffer(j)
		if err != nil {
			utils.MeasureE("librato.json", err)
			continue
		}
		req, err := http.NewRequest("POST", libratoUrl, postBody)
		if err != nil {
			continue
		}
		req.Header.Add("Content-Type", "application/json")
		req.SetBasicAuth(token.User, token.Pass)
		resp, err := http.DefaultClient.Do(req)
		if err != nil {
			utils.MeasureE("librato-post", err)
			continue
		}
		if resp.StatusCode/100 != 2 {
			b, _ := ioutil.ReadAll(resp.Body)
			fmt.Printf("status=%d post-body=%s resp-body=%s\n",
				resp.StatusCode, postBody, b)
		}
		utils.MeasureI("librato.post", 1)
		resp.Body.Close()
	}
}
Example #2
0
func CacheSet(c Cachable) error {
	defer utils.MeasureT(time.Now(), "cache-set")
	rc := rp.Get()
	defer rc.Close()
	bs, err := json.Marshal(c)
	if err != nil {
		utils.MeasureE("cache-json-encode", err)
		return err
	}
	_, err = rc.Do("SET", c.Key(), bs)
	if err != nil {
		utils.MeasureE("cache-set", err)
		return err
	}
	return nil
}
Example #3
0
func recieveLogs(w http.ResponseWriter, r *http.Request, ch chan<- *store.Bucket) {
	defer utils.MeasureT(time.Now(), "http-receiver")
	if r.Method != "POST" {
		http.Error(w, "Invalid Request", 400)
		return
	}
	defer r.Body.Close()
	token, err := utils.ParseToken(r)
	if err != nil {
		utils.MeasureE("http-auth", err)
		http.Error(w, "Invalid Request", 400)
		return
	}
	defer utils.MeasureT(time.Now(), token+"-http-receive")

	buckets, err := store.NewBucket(token, bufio.NewReader(r.Body))
	if err != nil {
		http.Error(w, "Invalid Request", 400)
		return
	}

	for i := range buckets {
		ch <- buckets[i]
	}
}
Example #4
0
func GetMetrics(token, name string, resolution int64, min, max time.Time) ([]*Metric, error) {
	startQuery := time.Now()
	rows, err := db.PGR.Query("select * from get_metrics($1, $2, $3, $4, $5)",
		token, name, resolution, min, max)
	if err != nil {
		utils.MeasureE("get-metrics-error", err)
		return nil, err
	}
	utils.MeasureT(startQuery, "get-metrics.query")
	startParse := time.Now()
	defer rows.Close()
	var metrics []*Metric
	for rows.Next() {
		startLoop := time.Now()
		var tmp []byte
		b := new(Bucket)
		rows.Scan(&b.Name, &b.Source, &b.Time, &tmp)
		if len(tmp) == 0 {
			b.Vals = []float64{}
			continue
		}
		encoding.DecodeArray(tmp, &b.Vals)
		m := new(Metric)
		m.Time = b.Time
		m.Name = b.Name
		m.Source = b.Source
		m.Mean = b.Mean()
		metrics = append(metrics, m)
		utils.MeasureT(startLoop, "get-metrics.scan-struct-loop")
	}
	utils.MeasureT(startParse, "parse.get-metrics")
	return metrics, nil
}
Example #5
0
func CacheGet(c Cachable) ([]byte, bool) {
	defer utils.MeasureT(time.Now(), "cache-get")
	rc := rp.Get()
	defer rc.Close()
	bs, err := redis.Bytes(rc.Do("GET", c.Key()))
	if err != nil {
		utils.MeasureE("redis-get", err)
		return nil, false
	}
	return bs, true
}
Example #6
0
// Fetch should kick off the librato outlet process.
// Its responsibility is to get the ids of buckets for the current time,
// make empty Buckets, then place the buckets in an inbox to be filled
// (load the vals into the bucket) and processed.
func fetch(out chan<- *store.Bucket) {
	for _ = range time.Tick(time.Duration(*processInterval) * time.Second) {
		go func(out chan<- *store.Bucket) {
			startPoll := time.Now()
			max := utils.RoundTime(time.Now(), time.Minute)
			min := max.Add(-time.Minute)
			ids, err := allBucketIds(min, max)
			if err != nil {
				utils.MeasureE("find-failed", err)
				return
			}
			for i := range ids {
				b := store.Bucket{Id: ids[i]}
				out <- &b
			}
			utils.MeasureT(startPoll, "librato.fetch")
		}(out)
	}
}