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Merge pull request #169 from jan--f/native-histograms
support native histograms
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Original file line number | Diff line number | Diff line change |
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@@ -1,15 +1,16 @@ | ||
module github.com/prometheus/prom2json | ||
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go 1.17 | ||
go 1.21 | ||
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require ( | ||
github.com/davecgh/go-spew v1.1.1 | ||
github.com/davecgh/go-spew v1.1.2-0.20180830191138-d8f796af33cc | ||
github.com/matttproud/golang_protobuf_extensions v1.0.4 | ||
github.com/prometheus/client_model v0.6.1 | ||
github.com/prometheus/common v0.53.0 | ||
github.com/prometheus/common v0.54.0 | ||
github.com/prometheus/prometheus v0.53.0 | ||
) | ||
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require ( | ||
github.com/golang/protobuf v1.5.3 // indirect | ||
google.golang.org/protobuf v1.33.0 // indirect | ||
github.com/golang/protobuf v1.5.4 // indirect | ||
google.golang.org/protobuf v1.34.1 // indirect | ||
) |
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Original file line number | Diff line number | Diff line change |
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@@ -0,0 +1,153 @@ | ||
// Copyright 2020 The Prometheus Authors | ||
// Licensed under the Apache License, Version 2.0 (the "License"); | ||
// you may not use this file except in compliance with the License. | ||
// You may obtain a copy of the License at | ||
// | ||
// http://www.apache.org/licenses/LICENSE-2.0 | ||
// | ||
// Unless required by applicable law or agreed to in writing, software | ||
// distributed under the License is distributed on an "AS IS" BASIS, | ||
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | ||
// See the License for the specific language governing permissions and | ||
// limitations under the License. | ||
package histogram | ||
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import ( | ||
"fmt" | ||
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dto "github.com/prometheus/client_model/go" | ||
model "github.com/prometheus/prometheus/model/histogram" | ||
) | ||
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type APIBucket[BC model.BucketCount] struct { | ||
Boundaries uint64 | ||
Lower, Upper float64 | ||
Count BC | ||
} | ||
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func NewModelHistogram(ch *dto.Histogram) (*model.Histogram, *model.FloatHistogram) { | ||
if ch.GetSampleCountFloat() > 0 || ch.GetZeroCountFloat() > 0 { | ||
// It is a float histogram. | ||
fh := model.FloatHistogram{ | ||
Count: ch.GetSampleCountFloat(), | ||
Sum: ch.GetSampleSum(), | ||
ZeroThreshold: ch.GetZeroThreshold(), | ||
ZeroCount: ch.GetZeroCountFloat(), | ||
Schema: ch.GetSchema(), | ||
PositiveSpans: make([]model.Span, len(ch.GetPositiveSpan())), | ||
PositiveBuckets: ch.GetPositiveCount(), | ||
NegativeSpans: make([]model.Span, len(ch.GetNegativeSpan())), | ||
NegativeBuckets: ch.GetNegativeCount(), | ||
} | ||
for i, span := range ch.GetPositiveSpan() { | ||
fh.PositiveSpans[i].Offset = span.GetOffset() | ||
fh.PositiveSpans[i].Length = span.GetLength() | ||
} | ||
for i, span := range ch.GetNegativeSpan() { | ||
fh.NegativeSpans[i].Offset = span.GetOffset() | ||
fh.NegativeSpans[i].Length = span.GetLength() | ||
} | ||
return nil, &fh | ||
} | ||
h := model.Histogram{ | ||
Count: ch.GetSampleCount(), | ||
Sum: ch.GetSampleSum(), | ||
ZeroThreshold: ch.GetZeroThreshold(), | ||
ZeroCount: ch.GetZeroCount(), | ||
Schema: ch.GetSchema(), | ||
PositiveSpans: make([]model.Span, len(ch.GetPositiveSpan())), | ||
PositiveBuckets: ch.GetPositiveDelta(), | ||
NegativeSpans: make([]model.Span, len(ch.GetNegativeSpan())), | ||
NegativeBuckets: ch.GetNegativeDelta(), | ||
} | ||
for i, span := range ch.GetPositiveSpan() { | ||
h.PositiveSpans[i].Offset = span.GetOffset() | ||
h.PositiveSpans[i].Length = span.GetLength() | ||
} | ||
for i, span := range ch.GetNegativeSpan() { | ||
h.NegativeSpans[i].Offset = span.GetOffset() | ||
h.NegativeSpans[i].Length = span.GetLength() | ||
} | ||
return &h, nil | ||
} | ||
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func BucketsAsJson[BC model.BucketCount](buckets []APIBucket[BC]) [][]interface{} { | ||
ret := make([][]interface{}, len(buckets)) | ||
for i, b := range buckets { | ||
ret[i] = []interface{}{b.Boundaries, fmt.Sprintf("%v", b.Lower), fmt.Sprintf("%v", b.Upper), fmt.Sprintf("%v", b.Count)} | ||
} | ||
return ret | ||
} | ||
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func GetAPIBuckets(h *model.Histogram) []APIBucket[uint64] { | ||
var apiBuckets []APIBucket[uint64] | ||
var nBuckets []model.Bucket[uint64] | ||
for it := h.NegativeBucketIterator(); it.Next(); { | ||
bucket := it.At() | ||
if bucket.Count != 0 { | ||
nBuckets = append(nBuckets, it.At()) | ||
} | ||
} | ||
for i := len(nBuckets) - 1; i >= 0; i-- { | ||
apiBuckets = append(apiBuckets, makeBucket[uint64](nBuckets[i])) | ||
} | ||
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if h.ZeroCount != 0 { | ||
apiBuckets = append(apiBuckets, makeBucket[uint64](h.ZeroBucket())) | ||
} | ||
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for it := h.PositiveBucketIterator(); it.Next(); { | ||
bucket := it.At() | ||
if bucket.Count != 0 { | ||
apiBuckets = append(apiBuckets, makeBucket[uint64](bucket)) | ||
} | ||
} | ||
return apiBuckets | ||
} | ||
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func GetAPIFloatBuckets(h *model.FloatHistogram) []APIBucket[float64] { | ||
var apiBuckets []APIBucket[float64] | ||
var nBuckets []model.Bucket[float64] | ||
for it := h.NegativeBucketIterator(); it.Next(); { | ||
bucket := it.At() | ||
if bucket.Count != 0 { | ||
nBuckets = append(nBuckets, it.At()) | ||
} | ||
} | ||
for i := len(nBuckets) - 1; i >= 0; i-- { | ||
apiBuckets = append(apiBuckets, makeBucket[float64](nBuckets[i])) | ||
} | ||
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if h.ZeroCount != 0 { | ||
apiBuckets = append(apiBuckets, makeBucket[float64](h.ZeroBucket())) | ||
} | ||
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for it := h.PositiveBucketIterator(); it.Next(); { | ||
bucket := it.At() | ||
if bucket.Count != 0 { | ||
apiBuckets = append(apiBuckets, makeBucket[float64](bucket)) | ||
} | ||
} | ||
return apiBuckets | ||
} | ||
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func makeBucket[BC model.BucketCount](bucket model.Bucket[BC]) APIBucket[BC] { | ||
boundaries := uint64(2) // () Exclusive on both sides AKA open interval. | ||
if bucket.LowerInclusive { | ||
if bucket.UpperInclusive { | ||
boundaries = 3 // [] Inclusive on both sides AKA closed interval. | ||
} else { | ||
boundaries = 1 // [) Inclusive only on lower end AKA right open. | ||
} | ||
} else { | ||
if bucket.UpperInclusive { | ||
boundaries = 0 // (] Inclusive only on upper end AKA left open. | ||
} | ||
} | ||
return APIBucket[BC]{ | ||
Boundaries: boundaries, | ||
Lower: bucket.Lower, | ||
Upper: bucket.Upper, | ||
Count: bucket.Count, | ||
} | ||
} |
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