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HPA: expose the metrics "metric_computation_duration_seconds" and "metric_computation_total" from HPA controller

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This commit is contained in:
Kensei Nakada
2023-03-07 12:55:41 +00:00
parent e8acfc45ba
commit 543f15d10c
4 changed files with 601 additions and 25 deletions
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23
pkg/controller/podautoscaler/horizontal.go
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@@ -424,6 +424,29 @@ func (a *HorizontalController) validateAndParseSelector(hpa *autoscalingv2.Horiz
func (a *HorizontalController) computeReplicasForMetric(ctx context.Context, hpa *autoscalingv2.HorizontalPodAutoscaler, spec autoscalingv2.MetricSpec,
specReplicas, statusReplicas int32, selector labels.Selector, status *autoscalingv2.MetricStatus) (replicaCountProposal int32, metricNameProposal string,
timestampProposal time.Time, condition autoscalingv2.HorizontalPodAutoscalerCondition, err error) {
// actionLabel is used to report which actions this reconciliation has taken.
start := time.Now()
defer func() {
actionLabel := monitor.ActionLabelNone
switch {
case replicaCountProposal > hpa.Status.CurrentReplicas:
actionLabel = monitor.ActionLabelScaleUp
case replicaCountProposal < hpa.Status.CurrentReplicas:
actionLabel = monitor.ActionLabelScaleDown
}
errorLabel := monitor.ErrorLabelNone
if err != nil {
// In case of error, set "internal" as default.
errorLabel = monitor.ErrorLabelInternal
actionLabel = monitor.ActionLabelNone
}
if errors.Is(err, errSpec) {
errorLabel = monitor.ErrorLabelSpec
}
a.monitor.ObserveMetricComputationResult(actionLabel, errorLabel, time.Since(start), spec.Type)
}()
switch spec.Type {
case autoscalingv2.ObjectMetricSourceType: