111 lines
2.8 KiB
Go
111 lines
2.8 KiB
Go
package collector
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import (
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"errors"
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"github.com/go-kit/log"
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"github.com/go-kit/log/level"
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"github.com/prometheus/client_golang/prometheus"
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"github.com/yusufpapurcu/wmi"
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)
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// A thermalZoneCollector is a Prometheus collector for WMI Win32_PerfRawData_Counters_ThermalZoneInformation metrics
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type thermalZoneCollector struct {
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logger log.Logger
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PercentPassiveLimit *prometheus.Desc
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Temperature *prometheus.Desc
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ThrottleReasons *prometheus.Desc
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}
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// newThermalZoneCollector ...
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func newThermalZoneCollector(logger log.Logger) (Collector, error) {
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const subsystem = "thermalzone"
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return &thermalZoneCollector{
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logger: log.With(logger, "collector", subsystem),
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Temperature: prometheus.NewDesc(
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prometheus.BuildFQName(Namespace, subsystem, "temperature_celsius"),
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"(Temperature)",
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[]string{
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"name",
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},
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nil,
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),
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PercentPassiveLimit: prometheus.NewDesc(
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prometheus.BuildFQName(Namespace, subsystem, "percent_passive_limit"),
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"(PercentPassiveLimit)",
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[]string{
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"name",
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},
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nil,
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),
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ThrottleReasons: prometheus.NewDesc(
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prometheus.BuildFQName(Namespace, subsystem, "throttle_reasons"),
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"(ThrottleReasons)",
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[]string{
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"name",
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},
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nil,
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),
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}, nil
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}
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// Collect sends the metric values for each metric
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// to the provided prometheus Metric channel.
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func (c *thermalZoneCollector) Collect(ctx *ScrapeContext, ch chan<- prometheus.Metric) error {
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if desc, err := c.collect(ch); err != nil {
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_ = level.Error(c.logger).Log("failed collecting thermalzone metrics", "desc", desc, "err", err)
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return err
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}
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return nil
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}
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// Win32_PerfRawData_Counters_ThermalZoneInformation docs:
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// https://wutils.com/wmi/root/cimv2/win32_perfrawdata_counters_thermalzoneinformation/
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type Win32_PerfRawData_Counters_ThermalZoneInformation struct {
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Name string
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HighPrecisionTemperature uint32
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PercentPassiveLimit uint32
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ThrottleReasons uint32
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}
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func (c *thermalZoneCollector) collect(ch chan<- prometheus.Metric) (*prometheus.Desc, error) {
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var dst []Win32_PerfRawData_Counters_ThermalZoneInformation
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q := queryAll(&dst, c.logger)
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if err := wmi.Query(q, &dst); err != nil {
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return nil, err
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}
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// ThermalZone collector has been known to 'successfully' return an empty result.
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if len(dst) == 0 {
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return nil, errors.New("Empty results set for collector")
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}
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for _, info := range dst {
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//Divide by 10 and subtract 273.15 to convert decikelvin to celsius
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ch <- prometheus.MustNewConstMetric(
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c.Temperature,
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prometheus.GaugeValue,
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(float64(info.HighPrecisionTemperature)/10.0)-273.15,
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info.Name,
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)
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ch <- prometheus.MustNewConstMetric(
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c.PercentPassiveLimit,
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prometheus.GaugeValue,
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float64(info.PercentPassiveLimit),
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info.Name,
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)
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ch <- prometheus.MustNewConstMetric(
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c.ThrottleReasons,
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prometheus.GaugeValue,
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float64(info.ThrottleReasons),
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info.Name,
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)
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}
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return nil, nil
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}
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