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Add a rule_group_samples metric (#7977)
This new metric allows tracking how many samples did each rule group generate. Signed-off-by: Łukasz Mierzwa <l.mierzwa@gmail.com>
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parent
072b9649a3
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@ -63,6 +63,7 @@ type Metrics struct {
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groupLastEvalTime *prometheus.GaugeVec
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groupLastDuration *prometheus.GaugeVec
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groupRules *prometheus.GaugeVec
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groupSamples *prometheus.GaugeVec
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}
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// NewGroupMetrics creates a new instance of Metrics and registers it with the provided registerer,
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@ -146,6 +147,14 @@ func NewGroupMetrics(reg prometheus.Registerer) *Metrics {
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},
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[]string{"rule_group"},
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),
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groupSamples: prometheus.NewGaugeVec(
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prometheus.GaugeOpts{
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Namespace: namespace,
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Name: "rule_group_last_evaluation_samples",
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Help: "The number of samples returned during the last rule group evaluation.",
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},
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[]string{"rule_group"},
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),
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}
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if reg != nil {
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@ -160,6 +169,7 @@ func NewGroupMetrics(reg prometheus.Registerer) *Metrics {
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m.groupLastEvalTime,
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m.groupLastDuration,
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m.groupRules,
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m.groupSamples,
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)
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}
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@ -276,6 +286,7 @@ func NewGroup(o GroupOptions) *Group {
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metrics.groupLastEvalTime.WithLabelValues(key)
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metrics.groupLastDuration.WithLabelValues(key)
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metrics.groupRules.WithLabelValues(key).Set(float64(len(o.Rules)))
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metrics.groupSamples.WithLabelValues(key)
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metrics.groupInterval.WithLabelValues(key).Set(o.Interval.Seconds())
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return &Group{
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@ -557,6 +568,7 @@ func (g *Group) CopyState(from *Group) {
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// Eval runs a single evaluation cycle in which all rules are evaluated sequentially.
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func (g *Group) Eval(ctx context.Context, ts time.Time) {
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var samplesTotal float64
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for i, rule := range g.rules {
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select {
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case <-g.done:
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@ -590,6 +602,7 @@ func (g *Group) Eval(ctx context.Context, ts time.Time) {
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g.metrics.evalFailures.WithLabelValues(groupKey(g.File(), g.Name())).Inc()
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return
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}
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samplesTotal += float64(len(vector))
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if ar, ok := rule.(*AlertingRule); ok {
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ar.sendAlerts(ctx, ts, g.opts.ResendDelay, g.interval, g.opts.NotifyFunc)
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@ -647,6 +660,9 @@ func (g *Group) Eval(ctx context.Context, ts time.Time) {
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}
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}(i, rule)
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}
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if g.metrics != nil {
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g.metrics.groupSamples.WithLabelValues(groupKey(g.File(), g.Name())).Set(samplesTotal)
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}
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g.cleanupStaleSeries(ctx, ts)
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}
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@ -978,6 +994,7 @@ func (m *Manager) Update(interval time.Duration, files []string, externalLabels
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m.groupLastEvalTime.DeleteLabelValues(n)
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m.groupLastDuration.DeleteLabelValues(n)
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m.groupRules.DeleteLabelValues(n)
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m.groupSamples.DeleteLabelValues((n))
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}
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wg.Done()
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}(n, oldg)
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