func (c *vmStatCollector) Update(ch chan<- prometheus.Metric) (err error) { file, err := os.Open(procFilePath("vmstat")) if err != nil { return err } defer file.Close() scanner := bufio.NewScanner(file) for scanner.Scan() { parts := strings.Fields(scanner.Text()) value, err := strconv.ParseFloat(parts[1], 64) if err != nil { return err } metric := prometheus.NewUntyped(prometheus.UntypedOpts{ Namespace: Namespace, Subsystem: vmStatSubsystem, Name: parts[0], Help: fmt.Sprintf("/proc/vmstat information field %s.", parts[0]), }) metric.Set(value) metric.Collect(ch) } return err }
func (e *Exporter) setGenericMetric(name string, value float64) { if _, ok := e.metrics[name]; !ok { e.metrics[name] = prometheus.NewUntyped(prometheus.UntypedOpts{ Namespace: namespace, Name: name, }) } e.metrics[name].Set(value) }