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prober: export probe counters and cumulative latency

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Updates #cleanup

Signed-off-by: Anton Tolchanov <anton@tailscale.com>
This commit is contained in:
Anton Tolchanov 2024-02-28 15:38:59 +00:00 committed by Anton Tolchanov
parent 7429e8912a
commit 205a10b51a
1 changed files with 18 additions and 1 deletions
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19
prober/prober.go
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@ -93,6 +93,12 @@ func (p *Prober) Run(name string, interval time.Duration, labels map[string]stri
mEndTime: prometheus.NewDesc("end_secs", "Latest probe end time (seconds since epoch)", nil, l),
mLatency: prometheus.NewDesc("latency_millis", "Latest probe latency (ms)", nil, l),
mResult: prometheus.NewDesc("result", "Latest probe result (1 = success, 0 = failure)", nil, l),
mAttempts: prometheus.NewCounterVec(prometheus.CounterOpts{
Name: "attempts_total", Help: "Total number of probing attempts", ConstLabels: l,
}, []string{"status"}),
mSeconds: prometheus.NewCounterVec(prometheus.CounterOpts{
Name: "seconds_total", Help: "Total amount of time spent executing the probe", ConstLabels: l,
}, []string{"status"}),
}
prometheus.WrapRegistererWithPrefix(p.namespace+"_", p.metrics).MustRegister(probe.metrics)
@ -185,6 +191,8 @@ type Probe struct {
mEndTime *prometheus.Desc
mLatency *prometheus.Desc
mResult *prometheus.Desc
mAttempts *prometheus.CounterVec
mSeconds *prometheus.CounterVec
mu sync.Mutex
start time.Time // last time doProbe started
@ -282,10 +290,15 @@ func (p *Probe) recordEnd(start time.Time, err error) {
p.end = end
p.succeeded = err == nil
p.lastErr = err
latency := end.Sub(p.start)
if p.succeeded {
p.latency = end.Sub(p.start)
p.latency = latency
p.mAttempts.WithLabelValues("ok").Inc()
p.mSeconds.WithLabelValues("ok").Add(latency.Seconds())
} else {
p.latency = 0
p.mAttempts.WithLabelValues("fail").Inc()
p.mSeconds.WithLabelValues("fail").Add(latency.Seconds())
}
}
@ -334,6 +347,8 @@ func (p *Probe) Describe(ch chan<- *prometheus.Desc) {
ch <- p.mEndTime
ch <- p.mResult
ch <- p.mLatency
p.mAttempts.Describe(ch)
p.mSeconds.Describe(ch)
}
// Collect implements prometheus.Collector.
@ -356,6 +371,8 @@ func (p *Probe) Collect(ch chan<- prometheus.Metric) {
if p.latency > 0 {
ch <- prometheus.MustNewConstMetric(p.mLatency, prometheus.GaugeValue, float64(p.latency.Milliseconds()))
}
p.mAttempts.Collect(ch)
p.mSeconds.Collect(ch)
}
// ticker wraps a time.Ticker in a way that can be faked for tests.