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https://github.com/prometheus/prometheus.git
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630bcb494b
Previously, we had one “polymorphous” `sample` type in the `storage` package. This commit breaks it up into `fSample`, `hSample`, and `fhSample`, each still implementing the `tsdbutil.Sample` interface. This reduces allocations in `sampleRing.Add` but inflicts the penalty of the interface wrapper, which makes things worse in total. This commit therefore just demonstrates the step taken. The next commit will tackle the interface overhead problem. Signed-off-by: beorn7 <beorn@grafana.com>
122 lines
3.3 KiB
Go
122 lines
3.3 KiB
Go
// Copyright 2021 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 storage
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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/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 TestListSeriesIterator(t *testing.T) {
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it := NewListSeriesIterator(samples{
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fSample{0, 0},
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fSample{1, 1},
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fSample{1, 1.5},
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fSample{2, 2},
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fSample{3, 3},
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})
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// Seek to the first sample with ts=1.
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require.Equal(t, chunkenc.ValFloat, it.Seek(1))
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ts, v := it.At()
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require.Equal(t, int64(1), ts)
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require.Equal(t, 1., v)
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// Seek one further, next sample still has ts=1.
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require.Equal(t, chunkenc.ValFloat, it.Next())
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ts, v = it.At()
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require.Equal(t, int64(1), ts)
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require.Equal(t, 1.5, v)
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// Seek again to 1 and make sure we stay where we are.
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require.Equal(t, chunkenc.ValFloat, it.Seek(1))
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ts, v = it.At()
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require.Equal(t, int64(1), ts)
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require.Equal(t, 1.5, v)
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// Another seek.
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require.Equal(t, chunkenc.ValFloat, it.Seek(3))
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ts, v = it.At()
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require.Equal(t, int64(3), ts)
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require.Equal(t, 3., v)
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// And we don't go back.
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require.Equal(t, chunkenc.ValFloat, it.Seek(2))
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ts, v = it.At()
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require.Equal(t, int64(3), ts)
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require.Equal(t, 3., v)
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// Seek beyond the end.
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require.Equal(t, chunkenc.ValNone, it.Seek(5))
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// And we don't go back. (This exposes issue #10027.)
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require.Equal(t, chunkenc.ValNone, it.Seek(2))
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}
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// TestSeriesSetToChunkSet test the property of SeriesSet that says
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// returned series should be iterable even after Next is called.
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func TestChunkSeriesSetToSeriesSet(t *testing.T) {
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series := []struct {
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lbs labels.Labels
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samples []tsdbutil.Sample
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}{
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{
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lbs: labels.FromStrings("__name__", "up", "instance", "localhost:8080"),
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samples: []tsdbutil.Sample{
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fSample{t: 1, f: 1},
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fSample{t: 2, f: 2},
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fSample{t: 3, f: 3},
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fSample{t: 4, f: 4},
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},
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}, {
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lbs: labels.FromStrings("__name__", "up", "instance", "localhost:8081"),
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samples: []tsdbutil.Sample{
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fSample{t: 1, f: 2},
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fSample{t: 2, f: 3},
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fSample{t: 3, f: 4},
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fSample{t: 4, f: 5},
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fSample{t: 5, f: 6},
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fSample{t: 6, f: 7},
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},
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},
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}
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var chunkSeries []ChunkSeries
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for _, s := range series {
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chunkSeries = append(chunkSeries, NewListChunkSeriesFromSamples(s.lbs, s.samples))
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}
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css := NewMockChunkSeriesSet(chunkSeries...)
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ss := NewSeriesSetFromChunkSeriesSet(css)
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var ssSlice []Series
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for ss.Next() {
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ssSlice = append(ssSlice, ss.At())
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}
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require.Len(t, ssSlice, 2)
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var iter chunkenc.Iterator
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for i, s := range ssSlice {
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require.EqualValues(t, series[i].lbs, s.Labels())
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iter = s.Iterator(iter)
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j := 0
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for iter.Next() == chunkenc.ValFloat {
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ts, v := iter.At()
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require.EqualValues(t, series[i].samples[j], fSample{t: ts, f: v})
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j++
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}
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}
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}
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