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promql: simplify inner loop of rangeEval

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Took out the loops with break after one iteration, and extract some
common code to a function.

Signed-off-by: Bryan Boreham <bjboreham@gmail.com>
This commit is contained in:
Bryan Boreham 2023-08-21 19:52:14 +01:00
parent 4d8e380269
commit 3879488476
1 changed files with 19 additions and 34 deletions
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53
promql/engine.go
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@ -1187,42 +1187,27 @@ func (ev *evaluator) rangeEval(prepSeries func(labels.Labels, *EvalSeriesHelper)
bufHelpers[i] = bufHelpers[i][:0]
}
for si, series := range matrixes[i] {
for _, point := range series.Floats {
if point.T == ts {
if ev.currentSamples < ev.maxSamples {
vectors[i] = append(vectors[i], Sample{Metric: series.Metric, F: point.F, T: ts})
if prepSeries != nil {
bufHelpers[i] = append(bufHelpers[i], seriesHelpers[i][si])
}
// Move input vectors forward so we don't have to re-scan the same
// past points at the next step.
matrixes[i][si].Floats = series.Floats[1:]
ev.currentSamples++
} else {
ev.error(ErrTooManySamples(env))
}
}
break
add := func(si int, s Sample) {
vectors[i] = append(vectors[i], s)
if prepSeries != nil {
bufHelpers[i] = append(bufHelpers[i], seriesHelpers[i][si])
}
for _, point := range series.Histograms {
if point.T == ts {
if ev.currentSamples < ev.maxSamples {
vectors[i] = append(vectors[i], Sample{Metric: series.Metric, H: point.H, T: ts})
if prepSeries != nil {
bufHelpers[i] = append(bufHelpers[i], seriesHelpers[i][si])
}
ev.currentSamples++
}
// Move input vectors forward so we don't have to re-scan the same
// past points at the next step.
matrixes[i][si].Histograms = series.Histograms[1:]
ev.currentSamples++
} else {
ev.error(ErrTooManySamples(env))
}
}
break
for si, series := range matrixes[i] {
if len(series.Floats) > 0 && series.Floats[0].T == ts {
add(si, Sample{Metric: series.Metric, F: series.Floats[0].F, T: ts})
// Move input vectors forward so we don't have to re-scan the same
// past points at the next step.
matrixes[i][si].Floats = series.Floats[1:]
}
if len(series.Histograms) > 0 && series.Histograms[0].T == ts {
add(si, Sample{Metric: series.Metric, H: series.Histograms[0].H, T: ts})
matrixes[i][si].Histograms = series.Histograms[1:]
}
if ev.currentSamples > ev.maxSamples {
ev.error(ErrTooManySamples(env))
}
}
args[i] = vectors[i]