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compat.go
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compat.go
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// Copyright (c) The Cortex Authors.
// Licensed under the Apache License 2.0.
package queryrange
import (
"github.com/prometheus/common/model"
)
// The following code will allow us to use JSON marshal and unmarshal functions from the Prometheus common package in
// query_range.go: https://github.com/prometheus/common/blob/846591a166358c7048ef197e84501ca688dda920/model/value.go
// Please see the link above for more details on Sample, SampleStream, HistogramPair and SampleHistogramPair.
func toModelSampleHistogramPair(s SampleHistogramPair) model.SampleHistogramPair {
return model.SampleHistogramPair{
Timestamp: model.Time(s.Timestamp),
Histogram: toModelSampleHistogram(s.Histogram),
}
}
func fromModelSampleHistogramPair(modelSampleHistogram model.SampleHistogramPair) (s SampleHistogramPair) {
return SampleHistogramPair{
Timestamp: int64(modelSampleHistogram.Timestamp),
Histogram: fromModelSampleHistogram(modelSampleHistogram.Histogram),
}
}
func fromModelSampleHistogram(modelSampleHistogram *model.SampleHistogram) (s SampleHistogram) {
buckets := make([]*HistogramBucket, len(modelSampleHistogram.Buckets))
for i, b := range modelSampleHistogram.Buckets {
buckets[i] = &HistogramBucket{
Lower: float64(b.Lower),
Upper: float64(b.Upper),
Count: float64(b.Count),
Boundaries: b.Boundaries,
}
}
return SampleHistogram{
Count: float64(modelSampleHistogram.Count),
Sum: float64(modelSampleHistogram.Sum),
Buckets: buckets,
}
}
func toModelSampleHistogram(s SampleHistogram) *model.SampleHistogram {
modelBuckets := make([]*model.HistogramBucket, len(s.Buckets))
for i, b := range s.Buckets {
modelBuckets[i] = &model.HistogramBucket{
Lower: model.FloatString(b.Lower),
Upper: model.FloatString(b.Upper),
Count: model.FloatString(b.Count),
Boundaries: b.Boundaries,
}
}
return &model.SampleHistogram{
Count: model.FloatString(s.Count),
Sum: model.FloatString(s.Sum),
Buckets: modelBuckets,
}
}