Exemplo n.º 1
0
func (g *Prometheus) gatherURL(url string, acc inputs.Accumulator) error {
	resp, err := http.Get(url)
	if err != nil {
		return fmt.Errorf("error making HTTP request to %s: %s", url, err)
	}
	defer resp.Body.Close()
	if resp.StatusCode != http.StatusOK {
		return fmt.Errorf("%s returned HTTP status %s", url, resp.Status)
	}
	format := expfmt.ResponseFormat(resp.Header)

	decoder := expfmt.NewDecoder(resp.Body, format)

	options := &expfmt.DecodeOptions{
		Timestamp: model.Now(),
	}
	sampleDecoder := &expfmt.SampleDecoder{
		Dec:  decoder,
		Opts: options,
	}

	for {
		var samples model.Vector
		err := sampleDecoder.Decode(&samples)
		if err == io.EOF {
			break
		} else if err != nil {
			return fmt.Errorf("error getting processing samples for %s: %s",
				url, err)
		}
		for _, sample := range samples {
			tags := make(map[string]string)
			for key, value := range sample.Metric {
				if key == model.MetricNameLabel {
					continue
				}
				tags[string(key)] = string(value)
			}
			acc.Add("prometheus_"+string(sample.Metric[model.MetricNameLabel]),
				float64(sample.Value), tags)
		}
	}

	return nil
}
Exemplo n.º 2
0
func add(acc inputs.Accumulator,
	name string, val float64, tags map[string]string) {
	if val >= 0 {
		acc.Add(name, val, tags)
	}
}
Exemplo n.º 3
0
func (s *Statsd) Gather(acc inputs.Accumulator) error {
	s.Lock()
	defer s.Unlock()

	for _, metric := range s.timings {
		acc.Add(metric.name+"_mean", metric.stats.Mean(), metric.tags)
		acc.Add(metric.name+"_stddev", metric.stats.Stddev(), metric.tags)
		acc.Add(metric.name+"_upper", metric.stats.Upper(), metric.tags)
		acc.Add(metric.name+"_lower", metric.stats.Lower(), metric.tags)
		acc.Add(metric.name+"_count", metric.stats.Count(), metric.tags)
		for _, percentile := range s.Percentiles {
			name := fmt.Sprintf("%s_percentile_%v", metric.name, percentile)
			acc.Add(name, metric.stats.Percentile(percentile), metric.tags)
		}
	}
	if s.DeleteTimings {
		s.timings = make(map[string]cachedtimings)
	}

	for _, metric := range s.gauges {
		acc.Add(metric.name, metric.value, metric.tags)
	}
	if s.DeleteGauges {
		s.gauges = make(map[string]cachedgauge)
	}

	for _, metric := range s.counters {
		acc.Add(metric.name, metric.value, metric.tags)
	}
	if s.DeleteCounters {
		s.counters = make(map[string]cachedcounter)
	}

	for _, metric := range s.sets {
		acc.Add(metric.name, int64(len(metric.set)), metric.tags)
	}
	if s.DeleteSets {
		s.sets = make(map[string]cachedset)
	}

	return nil
}