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Export systemd timer last trigger sec.

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This commit is contained in:
Tom Wilkie 2018-01-31 15:06:58 +00:00
parent f9e91156d0
commit a7fd6b8743
1 changed files with 33 additions and 0 deletions
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33
collector/systemd_linux.go
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@ -18,6 +18,7 @@ package collector
import (
"fmt"
"regexp"
"strings"
"github.com/coreos/go-systemd/dbus"
"github.com/prometheus/client_golang/prometheus"
@ -35,6 +36,7 @@ type systemdCollector struct {
unitDesc *prometheus.Desc
systemRunningDesc *prometheus.Desc
summaryDesc *prometheus.Desc
timerLastTriggerDesc *prometheus.Desc
unitWhitelistPattern *regexp.Regexp
unitBlacklistPattern *regexp.Regexp
}
@ -61,6 +63,9 @@ func NewSystemdCollector() (Collector, error) {
summaryDesc := prometheus.NewDesc(
prometheus.BuildFQName(namespace, subsystem, "units"),
"Summary of systemd unit states", []string{"state"}, nil)
timerLastTriggerDesc := prometheus.NewDesc(
prometheus.BuildFQName(namespace, subsystem, "timer_last_trigger_seconds"),
"Seconds since epoch of last trigger.", []string{"name"}, nil)
unitWhitelistPattern := regexp.MustCompile(fmt.Sprintf("^(?:%s)$", *unitWhitelist))
unitBlacklistPattern := regexp.MustCompile(fmt.Sprintf("^(?:%s)$", *unitBlacklist))
@ -68,6 +73,7 @@ func NewSystemdCollector() (Collector, error) {
unitDesc: unitDesc,
systemRunningDesc: systemRunningDesc,
summaryDesc: summaryDesc,
timerLastTriggerDesc: timerLastTriggerDesc,
unitWhitelistPattern: unitWhitelistPattern,
unitBlacklistPattern: unitBlacklistPattern,
}, nil
@ -84,6 +90,7 @@ func (c *systemdCollector) Update(ch chan<- prometheus.Metric) error {
units := filterUnits(allUnits, c.unitWhitelistPattern, c.unitBlacklistPattern)
c.collectUnitStatusMetrics(ch, units)
c.collectTimers(ch, units)
systemState, err := c.getSystemState()
if err != nil {
@ -108,6 +115,32 @@ func (c *systemdCollector) collectUnitStatusMetrics(ch chan<- prometheus.Metric,
}
}
func (c *systemdCollector) collectTimers(ch chan<- prometheus.Metric, units []dbus.UnitStatus) error {
conn, err := c.newDbus()
if err != nil {
return fmt.Errorf("couldn't get dbus connection: %s", err)
}
defer conn.Close()
for _, unit := range units {
if !strings.HasSuffix(unit.Name, ".timer") {
continue
}
lastTriggerValue, err := conn.GetUnitTypeProperty(unit.Name, "Timer", "LastTriggerUSec")
if err != nil {
log.Errorf("couldn't get unit '%s' LastTriggerUSec: %s", unit.Name, err)
continue
}
lastTrigger := lastTriggerValue.Value.Value().(uint64)
ch <- prometheus.MustNewConstMetric(
c.timerLastTriggerDesc, prometheus.GaugeValue,
float64(lastTrigger)/1e6, unit.Name)
}
return nil
}
func (c *systemdCollector) collectSummaryMetrics(ch chan<- prometheus.Metric, summary map[string]float64) {
for stateName, count := range summary {
ch <- prometheus.MustNewConstMetric(