Esempio n. 1
0
func newMetric(m *metrics.Metric, l *metrics.LabelSet) (prometheus.Metric, error) {
	var value float64
	var valueType prometheus.ValueType
	switch m.Kind {
	case metrics.Counter:
		valueType = prometheus.CounterValue
		value = float64(l.Datum.Get())
	case metrics.Gauge:
		valueType = prometheus.GaugeValue
		value = float64(l.Datum.Get())
	}
	return prometheus.NewConstMetric(newDesc(m, l), valueType, value)
}
Esempio n. 2
0
// newMetric converts one data source of a value list to a Prometheus metric.
func newMetric(vl api.ValueList, index int) (prometheus.Metric, error) {
	var value float64
	var valueType prometheus.ValueType

	switch v := vl.Values[index].(type) {
	case api.Gauge:
		value = float64(v)
		valueType = prometheus.GaugeValue
	case api.Derive:
		value = float64(v)
		valueType = prometheus.CounterValue
	case api.Counter:
		value = float64(v)
		valueType = prometheus.CounterValue
	default:
		return nil, fmt.Errorf("unknown value type: %T", v)
	}

	return prometheus.NewConstMetric(newDesc(vl, index), valueType, value)
}
Esempio n. 3
0
func (p *PrometheusClient) Write(metrics []telegraf.Metric) error {
	p.Lock()
	defer p.Unlock()

	if len(metrics) == 0 {
		return nil
	}

	for _, point := range metrics {
		key := point.Name()
		key = invalidNameCharRE.ReplaceAllString(key, "_")

		// convert tags into prometheus labels
		var labels []string
		l := prometheus.Labels{}
		for k, v := range point.Tags() {
			k = invalidNameCharRE.ReplaceAllString(k, "_")
			if len(k) == 0 {
				continue
			}
			labels = append(labels, k)
			l[k] = v
		}

		// Get a type if it's available, defaulting to Untyped
		var mType prometheus.ValueType
		switch point.Type() {
		case telegraf.Counter:
			mType = prometheus.CounterValue
		case telegraf.Gauge:
			mType = prometheus.GaugeValue
		default:
			mType = prometheus.UntypedValue
		}

		for n, val := range point.Fields() {
			// Ignore string and bool fields.
			switch val.(type) {
			case string:
				continue
			case bool:
				continue
			}

			// sanitize the measurement name
			n = invalidNameCharRE.ReplaceAllString(n, "_")
			var mname string
			if n == "value" {
				mname = key
			} else {
				mname = fmt.Sprintf("%s_%s", key, n)
			}

			desc := prometheus.NewDesc(mname, "Telegraf collected metric", nil, l)
			var metric prometheus.Metric
			var err error

			// switch for field type
			switch val := val.(type) {
			case int64:
				metric, err = prometheus.NewConstMetric(desc, mType, float64(val))
			case float64:
				metric, err = prometheus.NewConstMetric(desc, mType, val)
			default:
				continue
			}
			if err != nil {
				log.Printf("E! Error creating prometheus metric, "+
					"key: %s, labels: %v,\nerr: %s\n",
					mname, l, err.Error())
			}
			p.metrics[desc.String()] = metric
		}
	}
	return nil
}
Esempio n. 4
0
func (p *PrometheusClient) Write(metrics []telegraf.Metric) error {
	p.Lock()
	defer p.Unlock()

	p.metrics = make(map[string]prometheus.Metric)

	if len(metrics) == 0 {
		return nil
	}

	for _, point := range metrics {
		key := point.Name()
		key = sanitizedChars.Replace(key)

		var labels []string
		l := prometheus.Labels{}
		for k, v := range point.Tags() {
			k = sanitizedChars.Replace(k)
			if len(k) == 0 {
				continue
			}
			if !labelName.MatchString(k) {
				continue
			}
			labels = append(labels, k)
			l[k] = v
		}

		for n, val := range point.Fields() {
			// Ignore string and bool fields.
			switch val.(type) {
			case string:
				continue
			case bool:
				continue
			}

			// sanitize the measurement name
			n = sanitizedChars.Replace(n)
			var mname string
			if n == "value" {
				mname = key
			} else {
				mname = fmt.Sprintf("%s_%s", key, n)
			}

			// verify that it is a valid measurement name
			if !metricName.MatchString(mname) {
				continue
			}

			desc := prometheus.NewDesc(mname, "Telegraf collected metric", nil, l)
			var metric prometheus.Metric
			var err error
			switch val := val.(type) {
			case int64:
				metric, err = prometheus.NewConstMetric(desc, prometheus.UntypedValue, float64(val))
			case float64:
				metric, err = prometheus.NewConstMetric(desc, prometheus.UntypedValue, val)
			default:
				continue
			}
			if err != nil {
				log.Printf("ERROR creating prometheus metric, "+
					"key: %s, labels: %v,\nerr: %s\n",
					mname, l, err.Error())
			}
			p.metrics[desc.String()] = metric
		}
	}
	return nil
}