Collect lm-sensor metrics only when scraped (best practice for exporters)
Nick Cabatoff
parent
c2cf39dd43
commit
cdeb6e943c
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@ -11,40 +11,35 @@ import (
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_ "net/http/pprof"
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"strconv"
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"strings"
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"time"
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"github.com/ncabatoff/gosensors"
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"github.com/prometheus/client_golang/prometheus"
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)
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var (
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fanspeed = prometheus.NewGaugeVec(prometheus.GaugeOpts{
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Namespace: "sensor",
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Subsystem: "lm",
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Name: "fan_speed_rpm",
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Help: "fan speed (rotations per minute).",
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}, []string{"fantype", "chip", "adaptor"})
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fanspeedDesc = prometheus.NewDesc(
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"sensor_lm_fan_speed_rpm",
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"fan speed (rotations per minute).",
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[]string{"fantype", "chip", "adaptor"},
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nil)
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voltages = prometheus.NewGaugeVec(prometheus.GaugeOpts{
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Namespace: "sensor",
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Subsystem: "lm",
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Name: "voltage_volts",
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Help: "voltage in volts",
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}, []string{"intype", "chip", "adaptor"})
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voltageDesc = prometheus.NewDesc(
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"sensor_lm_voltage_volts",
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"voltage in volts",
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[]string{"intype", "chip", "adaptor"},
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nil)
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powers = prometheus.NewGaugeVec(prometheus.GaugeOpts{
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Namespace: "sensor",
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Subsystem: "lm",
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Name: "power_watts",
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Help: "power in watts",
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}, []string{"powertype", "chip", "adaptor"})
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powerDesc = prometheus.NewDesc(
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"sensor_lm_power_watts",
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"power in watts",
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[]string{"powertype", "chip", "adaptor"},
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nil)
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temperature = prometheus.NewGaugeVec(prometheus.GaugeOpts{
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Namespace: "sensor",
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Subsystem: "lm",
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Name: "temperature_celsius",
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Help: "temperature in celsius",
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}, []string{"temptype", "chip", "adaptor"})
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temperatureDesc = prometheus.NewDesc(
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"sensor_lm_temperature_celsius",
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"temperature in celsius",
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[]string{"temptype", "chip", "adaptor"},
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nil)
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hddTempDesc = prometheus.NewDesc(
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"sensor_hddsmart_temperature_celsius",
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@ -53,13 +48,6 @@ var (
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nil)
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)
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func init() {
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prometheus.MustRegister(fanspeed)
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prometheus.MustRegister(voltages)
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prometheus.MustRegister(powers)
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prometheus.MustRegister(temperature)
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}
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func main() {
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var (
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listenAddress = flag.String("web.listen-address", ":9255", "Address on which to expose metrics and web interface.")
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@ -69,13 +57,16 @@ func main() {
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flag.Parse()
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prometheus.EnableCollectChecks(true)
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hddcollector := NewHddCollector(*hddtempAddress)
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if err := hddcollector.Init(); err != nil {
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log.Printf("error readding hddtemps: %v", err)
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}
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prometheus.MustRegister(hddcollector)
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go collectLm()
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lmscollector := NewLmSensorsCollector()
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lmscollector.Init()
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prometheus.MustRegister(lmscollector)
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http.Handle(*metricsPath, prometheus.Handler())
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@ -91,27 +82,54 @@ func main() {
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http.ListenAndServe(*listenAddress, nil)
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}
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func collectLm() {
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gosensors.Init()
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defer gosensors.Cleanup()
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for {
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for _, chip := range gosensors.GetDetectedChips() {
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chipName := chip.String()
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adaptorName := chip.AdapterName()
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for _, feature := range chip.GetFeatures() {
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if strings.HasPrefix(feature.Name, "fan") {
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fanspeed.WithLabelValues(feature.GetLabel(), chipName, adaptorName).Set(feature.GetValue())
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} else if strings.HasPrefix(feature.Name, "temp") {
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temperature.WithLabelValues(feature.GetLabel(), chipName, adaptorName).Set(feature.GetValue())
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} else if strings.HasPrefix(feature.Name, "in") {
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voltages.WithLabelValues(feature.GetLabel(), chipName, adaptorName).Set(feature.GetValue())
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} else if strings.HasPrefix(feature.Name, "power") {
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powers.WithLabelValues(feature.GetLabel(), chipName, adaptorName).Set(feature.GetValue())
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}
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}
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type (
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LmSensorsCollector struct{}
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)
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func NewLmSensorsCollector() *LmSensorsCollector {
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return &LmSensorsCollector{}
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}
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func (l *LmSensorsCollector) Init() {
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gosensors.Init()
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}
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// Describe implements prometheus.Collector.
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func (l *LmSensorsCollector) Describe(ch chan<- *prometheus.Desc) {
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ch <- fanspeedDesc
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ch <- powerDesc
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ch <- temperatureDesc
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ch <- voltageDesc
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}
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// Collect implements prometheus.Collector.
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func (l *LmSensorsCollector) Collect(ch chan<- prometheus.Metric) {
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for _, chip := range gosensors.GetDetectedChips() {
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chipName := chip.String()
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adaptorName := chip.AdapterName()
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for _, feature := range chip.GetFeatures() {
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if strings.HasPrefix(feature.Name, "fan") {
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ch <- prometheus.MustNewConstMetric(fanspeedDesc,
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prometheus.GaugeValue,
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feature.GetValue(),
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feature.GetLabel(), chipName, adaptorName)
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} else if strings.HasPrefix(feature.Name, "temp") {
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ch <- prometheus.MustNewConstMetric(temperatureDesc,
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prometheus.GaugeValue,
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feature.GetValue(),
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feature.GetLabel(), chipName, adaptorName)
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} else if strings.HasPrefix(feature.Name, "in") {
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ch <- prometheus.MustNewConstMetric(voltageDesc,
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prometheus.GaugeValue,
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feature.GetValue(),
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feature.GetLabel(), chipName, adaptorName)
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} else if strings.HasPrefix(feature.Name, "power") {
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ch <- prometheus.MustNewConstMetric(powerDesc,
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prometheus.GaugeValue,
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feature.GetValue(),
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feature.GetLabel(), chipName, adaptorName)
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}
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}
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time.Sleep(1 * time.Second)
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}
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}
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