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promql: refactor: extract generateGroupingLabels function

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Signed-off-by: Bryan Boreham <bjboreham@gmail.com>
This commit is contained in:
Bryan Boreham 2024-01-16 17:49:43 +00:00
parent bbfc72b4e2
commit 8e04ab6dd4
1 changed files with 16 additions and 13 deletions
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29
promql/engine.go
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@ -2691,19 +2691,7 @@ func (ev *evaluator) aggregation(e *parser.AggregateExpr, grouping []string, par
group, ok := result[groupingKey]
// Add a new group if it doesn't exist.
if !ok {
var m labels.Labels
enh.resetBuilder(metric)
switch {
case without:
enh.lb.Del(grouping...)
enh.lb.Del(labels.MetricName)
m = enh.lb.Labels()
case len(grouping) > 0:
enh.lb.Keep(grouping...)
m = enh.lb.Labels()
default:
m = labels.EmptyLabels()
}
m := generateGroupingLabels(enh, metric, without, grouping)
newAgg := &groupedAggregation{
labels: m,
floatValue: s.F,
@ -2969,6 +2957,21 @@ func generateGroupingKey(metric labels.Labels, grouping []string, without bool,
return metric.HashForLabels(buf, grouping...)
}
func generateGroupingLabels(enh *EvalNodeHelper, metric labels.Labels, without bool, grouping []string) labels.Labels {
enh.resetBuilder(metric)
switch {
case without:
enh.lb.Del(grouping...)
enh.lb.Del(labels.MetricName)
return enh.lb.Labels()
case len(grouping) > 0:
enh.lb.Keep(grouping...)
return enh.lb.Labels()
default:
return labels.EmptyLabels()
}
}
// btos returns 1 if b is true, 0 otherwise.
func btos(b bool) float64 {
if b {