mirror of
https://github.com/rwinkhart/uni-nut.git
synced 2026-08-28 04:36:29 -04:00
Initial version of NUT exporter and command
This commit is contained in:
Dominik Honnef
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package main
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import (
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"net/http"
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"github.com/prometheus/client_golang/prometheus"
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"github.com/prometheus/client_golang/prometheus/promhttp"
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"honnef.co/go/nut_exporter"
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)
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func main() {
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c := nut_exporter.NewNUTCollector([]string{"main"}, nil)
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prometheus.MustRegister(c)
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http.Handle("/metrics", promhttp.Handler())
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http.ListenAndServe(":9999", nil)
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}
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@@ -0,0 +1,216 @@
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package nut_exporter
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import (
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"bytes"
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"log"
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"os/exec"
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"strconv"
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"strings"
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"github.com/prometheus/client_golang/prometheus"
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)
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var descriptions = map[string]struct {
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name string
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desc string
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}{
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"device.uptime": {"ups_uptime_seconds", "Device uptime"},
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"ups.temperature": {"ups_temperature_celsius", "UPS temperature"},
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"ups.load": {"ups_load_percent", "Load on UPS"},
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"ups.load.high": {"ups_load_high_percent", "Load when UPS switches to overload condition"},
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"ups.efficiency": {"ups_efficiency", "Efficiency of the UPS (ratio of the output current on the input current)"},
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"ups.power": {"ups_power_voltamperes", "Current value of apparent power"},
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"ups.power.nominal": {"ups_power_nominal_voltamperes", "Nominal value of apparent power"},
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"ups.realpower": {"ups_realpower_watts", "Current value of real power"},
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"ups.realpower.nominal": {"ups_realpower_nominal_watts", "Nominal value of real power"},
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"ups.beeper.status": {"ups_beeper_status", "UPS beeper status (enabled = 0, disabled = 1, muted = 2)"},
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"input.voltage": {"input_voltage_volts", "Input voltage"},
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"input.voltage.maximum": {"input_voltage_maximum_volts", "Maximum incoming voltage seen"},
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"input.voltage.minimum": {"input_voltage_minimum_volts", "Minimum incoming voltage seen"},
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"input.voltage.low.warning": {"input_voltage_low_warning_volts", "Low warning threshold"},
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"input.voltage.low.critical": {"input_voltage_low_critical_volts", "Low critical threshold"},
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"input.voltage.high.warning": {"input_voltage_high_warning_volts", "High warning threshold"},
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"input.voltage.high.critical": {"input_voltage_high_critical_volts", "High critical threshold"},
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"input.voltage.nominal": {"input_voltage_nominal_volts", "Nominal input voltage"},
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"input.transfer.delay": {"input_transfer_delay_seconds", "Delay before transfer to mains"},
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"input.transfer.low": {"input_transfer_low_volts", "Low voltage transfer point"},
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"input.transfer.high": {"input_transfer_high_volts", "High voltage transfer point"},
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"input.transfer.low.min": {"input_transfer_low_min_volts", "smallest settable low voltage transfer point"},
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"input.transfer.low.max": {"input_transfer_low_max_volts", "greatest settable low voltage transfer point"},
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"input.transfer.high.min": {"input_transfer_high_min_volts", "smallest settable high voltage transfer point"},
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"input.transfer.high.max": {"input_transfer_high_max_volts", "greatest settable high voltage transfer point"},
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"input.current": {"input_current_amperes", "Input current"},
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"input.current.nominal": {"input_current_nominal_amperes", "Nominal input current"},
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"input.current.low.warning": {"input_current_low_warning_amperes", "Low warning threshold"},
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"input.current.low.critical": {"input_current_low_critical_amperes", "Low critical threshold"},
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"input.current.high.warning": {"input_current_high_warning_amperes", "High warning threshold"},
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"input.current.high.critical": {"input_current_high_critical_amperes", "High critical threshold"},
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"input.frequency": {"input_frequency_hertz", "Input line frequency"},
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"input.frequency.nominal": {"input_frequency_nominal_hertz", "Nominal input line frequency"},
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"input.frequency.low": {"input_frequency_low_hertz", "Input line frequency low"},
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"input.frequency.high": {"input_frequency_high_hertz", "Input line frequency high"},
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"input.transfer.boost.low": {"input_transfer_boost_low_hertz", "Low voltage boosting transfer point"},
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"input.transfer.boost.high": {"input_transfer_boost_high_hertz", "High voltage boosting transfer point"},
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"input.transfer.trim.low": {"input_transfer_trim_low_hertz", "Low voltage trimming transfer point"},
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"input.transfer.trim.high": {"input_transfer_trim_high_hertz", "High voltage trimming transfer point"},
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"input.load": {"input_load_percent", "Load on (ePDU) input"},
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"input.realpower": {"input_realpower_watts", "Current sum value of all (ePDU) phases real power"},
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"input.power": {"input_power_voltamperes", "Current sum value of all (ePDU) phases apparent power"},
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"output.voltage": {"output_voltage_volts", "Output voltage"},
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"output.voltage.nominal": {"output_voltage_nominal_volts", "Nominal output voltage"},
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"output.frequency": {"output_frequency_hertz", "Output frequency"},
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"output.frequency.nominal": {"output_frequency_nominal_hertz", "Nominal output frequency"},
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"output.current": {"output_current_amperes", "Output current"},
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"output.current.nominal": {"output_current_nominal_amperes", "Nominal output current"},
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"battery.charge": {"battery_charge_percent", "Battery charge"},
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"battery.charge.low": {"battery_charge_low_percent", "Remaining battery level when UPS switches to LB"},
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"battery.charge.restart": {"battery_charge_restart_percent", "Minimum battery level for UPS restart after power-off"},
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"battery.charge.warning": {"battery_charge_warning_percent", "Battery level when UPS switches to \"Warning\" state"},
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"battery.charger.status": {"battery_charger_status", "Status of the battery charger (charging = 0, discharging = 1, floating = 2, resting = 3)"},
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"battery.voltage": {"battery_voltage_volts", "Battery voltage"},
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"battery.voltage.nominal": {"battery_voltage_nominal_volts", "Nominal battery voltage"},
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"battery.voltage.low": {"battery_voltage_low_volts", "Minimum battery voltage, that triggers FSD status"},
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"battery.voltage.high": {"battery_voltage_high_volts", "Maximum battery voltage (i.e. battery.charge = 100)"},
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"battery.capacity": {"battery_capacity_amperehours", "Battery capacity"},
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"battery.current": {"battery_current_amperes", "Battery current"},
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"battery.current.total": {"battery_current_total_amperes", "Total battery current"},
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"battery.temperature": {"battery_temperature_celsius", "Battery temperature"},
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"battery.runtime": {"battery_runtime_seconds", "Battery runtime"},
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"battery.runtime.low": {"battery_runtime_low_seconds", "Remaining battery runtime when UPS switches to LB"},
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"battery.runtime.restart": {"battery_runtime_restart_seconds", "Minimum battery runtime for UPS restart after power-off"},
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"battery.packs": {"battery_packs", "Number of battery packs"},
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"battery.packs.bad": {"battery_packs_bad", "Number of bad battery packs"},
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}
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func NewNUTCollector(names []string, hosts []string) prometheus.Collector {
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const namespace = "nut"
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descs := map[string]*prometheus.Desc{}
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for k, v := range descriptions {
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descs[k] = prometheus.NewDesc(
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prometheus.BuildFQName(namespace, "", v.name),
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v.desc,
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[]string{"model", "mfr", "serial", "type"},
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nil,
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)
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}
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return &nutCollector{
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names: names,
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hosts: hosts,
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descs: descs,
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}
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}
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type nutCollector struct {
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names []string
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hosts []string
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descs map[string]*prometheus.Desc
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}
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func (c *nutCollector) Describe(ch chan<- *prometheus.Desc) {
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for _, v := range c.descs {
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ch <- v
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}
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}
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func (c *nutCollector) Collect(ch chan<- prometheus.Metric) {
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names := append(([]string)(nil), c.names...)
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for _, host := range c.hosts {
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hn, err := c.getNUTNames(host)
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if err != nil {
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continue
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}
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names = append(names, hn...)
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}
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for _, name := range names {
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if err := c.readNUT(name, ch); err != nil {
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log.Printf("error reading UPS values: %s", err)
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}
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}
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}
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func (c *nutCollector) getNUTNames(host string) ([]string, error) {
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cmd := exec.Command("upsc", "-l", host)
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out, err := cmd.Output()
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if err != nil {
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return nil, err
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}
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names := strings.Split(string(out), "\n")
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if len(names) > 0 {
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names = names[:len(names)-1]
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}
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return names, nil
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}
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func (c *nutCollector) readNUT(name string, ch chan<- prometheus.Metric) error {
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cmd := exec.Command("upsc", name)
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out, err := cmd.Output()
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if err != nil {
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return err
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}
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labels := map[string]string{}
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values := map[string]float64{}
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for k := range descriptions {
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values[k] = 0
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}
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for _, l := range bytes.Split(out, []byte("\n")) {
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parts := bytes.SplitN(l, []byte(": "), 2)
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if len(parts) != 2 {
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continue
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}
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k, v := string(parts[0]), string(parts[1])
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switch k {
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case "device.model", "device.mfr", "device.serial", "device.type":
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labels[k] = v
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case "ups.beeper.status":
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f := float64(-1)
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switch v {
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case "enabled":
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f = 9
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case "disabled":
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f = 1
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case "muted":
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f = 2
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}
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values[k] = f
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case "battery.charger.status":
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f := float64(-1)
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switch v {
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case "charging":
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f = 0
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case "discharging":
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f = 1
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case "floating":
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f = 2
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case "resting":
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f = 3
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}
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values[k] = f
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default:
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if _, ok := descriptions[k]; !ok {
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continue
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}
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f, err := strconv.ParseFloat(v, 64)
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if err != nil {
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continue
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}
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values[k] = f
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}
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}
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labelValues := []string{
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labels["device.model"], labels["device.mfr"], labels["device.serial"], labels["device.type"],
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}
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for k, v := range values {
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ch <- prometheus.MustNewConstMetric(c.descs[k], prometheus.GaugeValue, v, labelValues...)
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}
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return nil
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}
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