Esempio n. 1
0
// PrintAsText outputs all metrics in text format.
func (r *Registry) PrintAsText(w io.Writer) error {
	var metricFamily prometheusgo.MetricFamily
	var ret error
	labels := r.getLabels()
	for _, metric := range r.tracked {
		metric.Inspect(func(v interface{}) {
			if ret != nil {
				return
			}
			if prom, ok := v.(PrometheusExportable); ok {
				metricFamily.Reset()
				metricFamily.Name = proto.String(exportedName(metric.GetName()))
				metricFamily.Help = proto.String(metric.GetHelp())
				prom.FillPrometheusMetric(&metricFamily)
				if len(labels) != 0 {
					// Set labels from registry. We only set one metric in the slice, but loop anyway.
					for _, m := range metricFamily.Metric {
						m.Label = labels
					}
				}
				if l := prom.GetLabels(); len(l) != 0 {
					// Append per-metric labels.
					for _, m := range metricFamily.Metric {
						m.Label = append(m.Label, l...)
					}
				}
				if _, err := expfmt.MetricFamilyToText(w, &metricFamily); err != nil {
					ret = err
				}
			}
		})
	}
	return ret
}