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121 lines
3.8 KiB
121 lines
3.8 KiB
// Copyright 2015 The Prometheus Authors |
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// Licensed under the Apache License, Version 2.0 (the "License"); |
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// you may not use this file except in compliance with the License. |
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// You may obtain a copy of the License at |
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// |
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// http://www.apache.org/licenses/LICENSE-2.0 |
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// |
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// Unless required by applicable law or agreed to in writing, software |
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// distributed under the License is distributed on an "AS IS" BASIS, |
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
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// See the License for the specific language governing permissions and |
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// limitations under the License. |
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package promql |
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import ( |
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"testing" |
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"github.com/stretchr/testify/require" |
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"github.com/prometheus/prometheus/model/histogram" |
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"github.com/prometheus/prometheus/model/labels" |
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"github.com/prometheus/prometheus/tsdb/chunkenc" |
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"github.com/prometheus/prometheus/tsdb/tsdbutil" |
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) |
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func TestHistogramStatsDecoding(t *testing.T) { |
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histograms := []*histogram.Histogram{ |
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tsdbutil.GenerateTestHistogram(0), |
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tsdbutil.GenerateTestHistogram(1), |
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tsdbutil.GenerateTestHistogram(2), |
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tsdbutil.GenerateTestHistogram(2), |
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} |
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histograms[0].CounterResetHint = histogram.NotCounterReset |
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histograms[1].CounterResetHint = histogram.UnknownCounterReset |
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histograms[2].CounterResetHint = histogram.CounterReset |
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histograms[3].CounterResetHint = histogram.UnknownCounterReset |
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expectedHints := []histogram.CounterResetHint{ |
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histogram.NotCounterReset, |
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histogram.NotCounterReset, |
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histogram.CounterReset, |
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histogram.NotCounterReset, |
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} |
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t.Run("histogram_stats", func(t *testing.T) { |
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decodedStats := make([]*histogram.Histogram, 0) |
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statsIterator := NewHistogramStatsIterator(newHistogramSeries(histograms).Iterator(nil)) |
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for statsIterator.Next() != chunkenc.ValNone { |
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_, h := statsIterator.AtHistogram(nil) |
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decodedStats = append(decodedStats, h) |
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} |
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for i := 0; i < len(histograms); i++ { |
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require.Equal(t, expectedHints[i], decodedStats[i].CounterResetHint) |
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require.Equal(t, histograms[i].Count, decodedStats[i].Count) |
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require.Equal(t, histograms[i].Sum, decodedStats[i].Sum) |
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} |
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}) |
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t.Run("float_histogram_stats", func(t *testing.T) { |
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decodedStats := make([]*histogram.FloatHistogram, 0) |
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statsIterator := NewHistogramStatsIterator(newHistogramSeries(histograms).Iterator(nil)) |
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for statsIterator.Next() != chunkenc.ValNone { |
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_, h := statsIterator.AtFloatHistogram(nil) |
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decodedStats = append(decodedStats, h) |
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} |
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for i := 0; i < len(histograms); i++ { |
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fh := histograms[i].ToFloat(nil) |
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require.Equal(t, expectedHints[i], decodedStats[i].CounterResetHint) |
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require.Equal(t, fh.Count, decodedStats[i].Count) |
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require.Equal(t, fh.Sum, decodedStats[i].Sum) |
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} |
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}) |
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} |
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type histogramSeries struct { |
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histograms []*histogram.Histogram |
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} |
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func newHistogramSeries(histograms []*histogram.Histogram) *histogramSeries { |
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return &histogramSeries{ |
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histograms: histograms, |
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} |
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} |
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func (m histogramSeries) Labels() labels.Labels { return labels.EmptyLabels() } |
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func (m histogramSeries) Iterator(_ chunkenc.Iterator) chunkenc.Iterator { |
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return &histogramIterator{ |
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i: -1, |
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histograms: m.histograms, |
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} |
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} |
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type histogramIterator struct { |
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i int |
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histograms []*histogram.Histogram |
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} |
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func (h *histogramIterator) Next() chunkenc.ValueType { |
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h.i++ |
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if h.i < len(h.histograms) { |
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return chunkenc.ValHistogram |
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} |
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return chunkenc.ValNone |
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} |
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func (h *histogramIterator) Seek(t int64) chunkenc.ValueType { panic("not implemented") } |
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func (h *histogramIterator) At() (int64, float64) { panic("not implemented") } |
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func (h *histogramIterator) AtHistogram(_ *histogram.Histogram) (int64, *histogram.Histogram) { |
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return 0, h.histograms[h.i] |
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} |
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func (h *histogramIterator) AtFloatHistogram(_ *histogram.FloatHistogram) (int64, *histogram.FloatHistogram) { |
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return 0, h.histograms[h.i].ToFloat(nil) |
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} |
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func (h *histogramIterator) AtT() int64 { return 0 } |
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func (h *histogramIterator) Err() error { return nil }
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