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prometheus/tsdb/querier_test.go
Bryan Boreham 176fa38e76 tsdb: in tests use labels.FromStrings 
Replacing code which assumes the internal structure of `Labels`.

Signed-off-by: Bryan Boreham <bjboreham@gmail.com>
2022-09-09 13:34:49 +02:00

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// Copyright 2017 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 tsdb
import (
"context"
"fmt"
"math"
"math/rand"
"path/filepath"
"sort"
"strconv"
"testing"
"time"
"github.com/pkg/errors"
"github.com/stretchr/testify/require"
"github.com/prometheus/prometheus/model/labels"
"github.com/prometheus/prometheus/storage"
"github.com/prometheus/prometheus/tsdb/chunkenc"
"github.com/prometheus/prometheus/tsdb/chunks"
"github.com/prometheus/prometheus/tsdb/index"
"github.com/prometheus/prometheus/tsdb/tombstones"
"github.com/prometheus/prometheus/tsdb/tsdbutil"
)
// TODO(bwplotka): Replace those mocks with remote.concreteSeriesSet.
type mockSeriesSet struct {
next func() bool
series func() storage.Series
ws func() storage.Warnings
err func() error
}
func (m *mockSeriesSet) Next() bool { return m.next() }
func (m *mockSeriesSet) At() storage.Series { return m.series() }
func (m *mockSeriesSet) Err() error { return m.err() }
func (m *mockSeriesSet) Warnings() storage.Warnings { return m.ws() }
func newMockSeriesSet(list []storage.Series) *mockSeriesSet {
i := -1
return &mockSeriesSet{
next: func() bool {
i++
return i < len(list)
},
series: func() storage.Series {
return list[i]
},
err: func() error { return nil },
ws: func() storage.Warnings { return nil },
}
}
type mockChunkSeriesSet struct {
next func() bool
series func() storage.ChunkSeries
ws func() storage.Warnings
err func() error
}
func (m *mockChunkSeriesSet) Next() bool { return m.next() }
func (m *mockChunkSeriesSet) At() storage.ChunkSeries { return m.series() }
func (m *mockChunkSeriesSet) Err() error { return m.err() }
func (m *mockChunkSeriesSet) Warnings() storage.Warnings { return m.ws() }
func newMockChunkSeriesSet(list []storage.ChunkSeries) *mockChunkSeriesSet {
i := -1
return &mockChunkSeriesSet{
next: func() bool {
i++
return i < len(list)
},
series: func() storage.ChunkSeries {
return list[i]
},
err: func() error { return nil },
ws: func() storage.Warnings { return nil },
}
}
type seriesSamples struct {
lset map[string]string
chunks [][]sample
}
// Index: labels -> postings -> chunkMetas -> chunkRef
// ChunkReader: ref -> vals
func createIdxChkReaders(t *testing.T, tc []seriesSamples) (IndexReader, ChunkReader, int64, int64) {
sort.Slice(tc, func(i, j int) bool {
return labels.Compare(labels.FromMap(tc[i].lset), labels.FromMap(tc[i].lset)) < 0
})
postings := index.NewMemPostings()
chkReader := mockChunkReader(make(map[chunks.ChunkRef]chunkenc.Chunk))
lblIdx := make(map[string]map[string]struct{})
mi := newMockIndex()
blockMint := int64(math.MaxInt64)
blockMaxt := int64(math.MinInt64)
var chunkRef chunks.ChunkRef
for i, s := range tc {
i = i + 1 // 0 is not a valid posting.
metas := make([]chunks.Meta, 0, len(s.chunks))
for _, chk := range s.chunks {
if chk[0].t < blockMint {
blockMint = chk[0].t
}
if chk[len(chk)-1].t > blockMaxt {
blockMaxt = chk[len(chk)-1].t
}
metas = append(metas, chunks.Meta{
MinTime: chk[0].t,
MaxTime: chk[len(chk)-1].t,
Ref: chunkRef,
})
chunk := chunkenc.NewXORChunk()
app, _ := chunk.Appender()
for _, smpl := range chk {
app.Append(smpl.t, smpl.v)
}
chkReader[chunkRef] = chunk
chunkRef++
}
ls := labels.FromMap(s.lset)
require.NoError(t, mi.AddSeries(storage.SeriesRef(i), ls, metas...))
postings.Add(storage.SeriesRef(i), ls)
for _, l := range ls {
vs, present := lblIdx[l.Name]
if !present {
vs = map[string]struct{}{}
lblIdx[l.Name] = vs
}
vs[l.Value] = struct{}{}
}
}
require.NoError(t, postings.Iter(func(l labels.Label, p index.Postings) error {
return mi.WritePostings(l.Name, l.Value, p)
}))
return mi, chkReader, blockMint, blockMaxt
}
type blockQuerierTestCase struct {
mint, maxt int64
ms []*labels.Matcher
hints *storage.SelectHints
exp storage.SeriesSet
expChks storage.ChunkSeriesSet
}
func testBlockQuerier(t *testing.T, c blockQuerierTestCase, ir IndexReader, cr ChunkReader, stones *tombstones.MemTombstones) {
t.Run("sample", func(t *testing.T) {
q := blockQuerier{
blockBaseQuerier: &blockBaseQuerier{
index: ir,
chunks: cr,
tombstones: stones,
mint: c.mint,
maxt: c.maxt,
},
}
res := q.Select(false, c.hints, c.ms...)
defer func() { require.NoError(t, q.Close()) }()
for {
eok, rok := c.exp.Next(), res.Next()
require.Equal(t, eok, rok)
if !eok {
require.Equal(t, 0, len(res.Warnings()))
break
}
sexp := c.exp.At()
sres := res.At()
require.Equal(t, sexp.Labels(), sres.Labels())
smplExp, errExp := storage.ExpandSamples(sexp.Iterator(), nil)
smplRes, errRes := storage.ExpandSamples(sres.Iterator(), nil)
require.Equal(t, errExp, errRes)
require.Equal(t, smplExp, smplRes)
}
require.NoError(t, res.Err())
})
t.Run("chunk", func(t *testing.T) {
q := blockChunkQuerier{
blockBaseQuerier: &blockBaseQuerier{
index: ir,
chunks: cr,
tombstones: stones,
mint: c.mint,
maxt: c.maxt,
},
}
res := q.Select(false, c.hints, c.ms...)
defer func() { require.NoError(t, q.Close()) }()
for {
eok, rok := c.expChks.Next(), res.Next()
require.Equal(t, eok, rok)
if !eok {
require.Equal(t, 0, len(res.Warnings()))
break
}
sexpChks := c.expChks.At()
sres := res.At()
require.Equal(t, sexpChks.Labels(), sres.Labels())
chksExp, errExp := storage.ExpandChunks(sexpChks.Iterator())
rmChunkRefs(chksExp)
chksRes, errRes := storage.ExpandChunks(sres.Iterator())
rmChunkRefs(chksRes)
require.Equal(t, errExp, errRes)
require.Equal(t, chksExp, chksRes)
}
require.NoError(t, res.Err())
})
}
func TestBlockQuerier(t *testing.T) {
for _, c := range []blockQuerierTestCase{
{
mint: 0,
maxt: 0,
ms: []*labels.Matcher{},
exp: newMockSeriesSet([]storage.Series{}),
expChks: newMockChunkSeriesSet([]storage.ChunkSeries{}),
},
{
mint: 0,
maxt: 0,
ms: []*labels.Matcher{labels.MustNewMatcher(labels.MatchEqual, "a", "a")},
exp: newMockSeriesSet([]storage.Series{}),
expChks: newMockChunkSeriesSet([]storage.ChunkSeries{}),
},
{
mint: 1,
maxt: 0,
ms: []*labels.Matcher{labels.MustNewMatcher(labels.MatchEqual, "a", "a")},
exp: newMockSeriesSet([]storage.Series{}),
expChks: newMockChunkSeriesSet([]storage.ChunkSeries{}),
},
{
mint: math.MinInt64,
maxt: math.MaxInt64,
ms: []*labels.Matcher{labels.MustNewMatcher(labels.MatchEqual, "a", "x")},
exp: newMockSeriesSet([]storage.Series{}),
expChks: newMockChunkSeriesSet([]storage.ChunkSeries{}),
},
{
mint: math.MinInt64,
maxt: math.MaxInt64,
ms: []*labels.Matcher{labels.MustNewMatcher(labels.MatchRegexp, "a", ".*")},
exp: newMockSeriesSet([]storage.Series{
storage.NewListSeries(labels.FromStrings("a", "a"),
[]tsdbutil.Sample{sample{1, 2}, sample{2, 3}, sample{3, 4}, sample{5, 2}, sample{6, 3}, sample{7, 4}},
),
storage.NewListSeries(labels.FromStrings("a", "a", "b", "b"),
[]tsdbutil.Sample{sample{1, 1}, sample{2, 2}, sample{3, 3}, sample{5, 3}, sample{6, 6}},
),
storage.NewListSeries(labels.FromStrings("b", "b"),
[]tsdbutil.Sample{sample{1, 3}, sample{2, 2}, sample{3, 6}, sample{5, 1}, sample{6, 7}, sample{7, 2}},
),
}),
expChks: newMockChunkSeriesSet([]storage.ChunkSeries{
storage.NewListChunkSeriesFromSamples(labels.FromStrings("a", "a"),
[]tsdbutil.Sample{sample{1, 2}, sample{2, 3}, sample{3, 4}}, []tsdbutil.Sample{sample{5, 2}, sample{6, 3}, sample{7, 4}},
),
storage.NewListChunkSeriesFromSamples(labels.FromStrings("a", "a", "b", "b"),
[]tsdbutil.Sample{sample{1, 1}, sample{2, 2}, sample{3, 3}}, []tsdbutil.Sample{sample{5, 3}, sample{6, 6}},
),
storage.NewListChunkSeriesFromSamples(labels.FromStrings("b", "b"),
[]tsdbutil.Sample{sample{1, 3}, sample{2, 2}, sample{3, 6}}, []tsdbutil.Sample{sample{5, 1}, sample{6, 7}, sample{7, 2}},
),
}),
},
{
mint: 2,
maxt: 6,
ms: []*labels.Matcher{labels.MustNewMatcher(labels.MatchEqual, "a", "a")},
exp: newMockSeriesSet([]storage.Series{
storage.NewListSeries(labels.FromStrings("a", "a"),
[]tsdbutil.Sample{sample{2, 3}, sample{3, 4}, sample{5, 2}, sample{6, 3}},
),
storage.NewListSeries(labels.FromStrings("a", "a", "b", "b"),
[]tsdbutil.Sample{sample{2, 2}, sample{3, 3}, sample{5, 3}, sample{6, 6}},
),
}),
expChks: newMockChunkSeriesSet([]storage.ChunkSeries{
storage.NewListChunkSeriesFromSamples(labels.FromStrings("a", "a"),
[]tsdbutil.Sample{sample{2, 3}, sample{3, 4}}, []tsdbutil.Sample{sample{5, 2}, sample{6, 3}},
),
storage.NewListChunkSeriesFromSamples(labels.FromStrings("a", "a", "b", "b"),
[]tsdbutil.Sample{sample{2, 2}, sample{3, 3}}, []tsdbutil.Sample{sample{5, 3}, sample{6, 6}},
),
}),
},
{
// This test runs a query disabling trimming. All chunks containing at least 1 sample within the queried
// time range will be returned.
mint: 2,
maxt: 6,
hints: &storage.SelectHints{Start: 2, End: 6, DisableTrimming: true},
ms: []*labels.Matcher{labels.MustNewMatcher(labels.MatchEqual, "a", "a")},
exp: newMockSeriesSet([]storage.Series{
storage.NewListSeries(labels.FromStrings("a", "a"),
[]tsdbutil.Sample{sample{1, 2}, sample{2, 3}, sample{3, 4}, sample{5, 2}, sample{6, 3}, sample{7, 4}},
),
storage.NewListSeries(labels.FromStrings("a", "a", "b", "b"),
[]tsdbutil.Sample{sample{1, 1}, sample{2, 2}, sample{3, 3}, sample{5, 3}, sample{6, 6}},
),
}),
expChks: newMockChunkSeriesSet([]storage.ChunkSeries{
storage.NewListChunkSeriesFromSamples(labels.FromStrings("a", "a"),
[]tsdbutil.Sample{sample{1, 2}, sample{2, 3}, sample{3, 4}},
[]tsdbutil.Sample{sample{5, 2}, sample{6, 3}, sample{7, 4}},
),
storage.NewListChunkSeriesFromSamples(labels.FromStrings("a", "a", "b", "b"),
[]tsdbutil.Sample{sample{1, 1}, sample{2, 2}, sample{3, 3}},
[]tsdbutil.Sample{sample{5, 3}, sample{6, 6}},
),
}),
},
{
// This test runs a query disabling trimming. All chunks containing at least 1 sample within the queried
// time range will be returned.
mint: 5,
maxt: 6,
hints: &storage.SelectHints{Start: 5, End: 6, DisableTrimming: true},
ms: []*labels.Matcher{labels.MustNewMatcher(labels.MatchEqual, "a", "a")},
exp: newMockSeriesSet([]storage.Series{
storage.NewListSeries(labels.FromStrings("a", "a"),
[]tsdbutil.Sample{sample{5, 2}, sample{6, 3}, sample{7, 4}},
),
storage.NewListSeries(labels.FromStrings("a", "a", "b", "b"),
[]tsdbutil.Sample{sample{5, 3}, sample{6, 6}},
),
}),
expChks: newMockChunkSeriesSet([]storage.ChunkSeries{
storage.NewListChunkSeriesFromSamples(labels.FromStrings("a", "a"),
[]tsdbutil.Sample{sample{5, 2}, sample{6, 3}, sample{7, 4}},
),
storage.NewListChunkSeriesFromSamples(labels.FromStrings("a", "a", "b", "b"),
[]tsdbutil.Sample{sample{5, 3}, sample{6, 6}},
),
}),
},
} {
t.Run("", func(t *testing.T) {
ir, cr, _, _ := createIdxChkReaders(t, testData)
testBlockQuerier(t, c, ir, cr, tombstones.NewMemTombstones())
})
}
}
func TestBlockQuerier_AgainstHeadWithOpenChunks(t *testing.T) {
for _, c := range []blockQuerierTestCase{
{
mint: 0,
maxt: 0,
ms: []*labels.Matcher{},
exp: newMockSeriesSet([]storage.Series{}),
expChks: newMockChunkSeriesSet([]storage.ChunkSeries{}),
},
{
mint: 0,
maxt: 0,
ms: []*labels.Matcher{labels.MustNewMatcher(labels.MatchEqual, "a", "a")},
exp: newMockSeriesSet([]storage.Series{}),
expChks: newMockChunkSeriesSet([]storage.ChunkSeries{}),
},
{
mint: 1,
maxt: 0,
ms: []*labels.Matcher{labels.MustNewMatcher(labels.MatchEqual, "a", "a")},
exp: newMockSeriesSet([]storage.Series{}),
expChks: newMockChunkSeriesSet([]storage.ChunkSeries{}),
},
{
mint: math.MinInt64,
maxt: math.MaxInt64,
ms: []*labels.Matcher{labels.MustNewMatcher(labels.MatchEqual, "a", "x")},
exp: newMockSeriesSet([]storage.Series{}),
expChks: newMockChunkSeriesSet([]storage.ChunkSeries{}),
},
{
mint: math.MinInt64,
maxt: math.MaxInt64,
ms: []*labels.Matcher{labels.MustNewMatcher(labels.MatchRegexp, "a", ".*")},
exp: newMockSeriesSet([]storage.Series{
storage.NewListSeries(labels.FromStrings("a", "a"),
[]tsdbutil.Sample{sample{1, 2}, sample{2, 3}, sample{3, 4}, sample{5, 2}, sample{6, 3}, sample{7, 4}},
),
storage.NewListSeries(labels.FromStrings("a", "a", "b", "b"),
[]tsdbutil.Sample{sample{1, 1}, sample{2, 2}, sample{3, 3}, sample{5, 3}, sample{6, 6}},
),
storage.NewListSeries(labels.FromStrings("b", "b"),
[]tsdbutil.Sample{sample{1, 3}, sample{2, 2}, sample{3, 6}, sample{5, 1}, sample{6, 7}, sample{7, 2}},
),
}),
expChks: newMockChunkSeriesSet([]storage.ChunkSeries{
storage.NewListChunkSeriesFromSamples(labels.FromStrings("a", "a"),
[]tsdbutil.Sample{sample{1, 2}, sample{2, 3}, sample{3, 4}, sample{5, 2}, sample{6, 3}, sample{7, 4}},
),
storage.NewListChunkSeriesFromSamples(labels.FromStrings("a", "a", "b", "b"),
[]tsdbutil.Sample{sample{1, 1}, sample{2, 2}, sample{3, 3}, sample{5, 3}, sample{6, 6}},
),
storage.NewListChunkSeriesFromSamples(labels.FromStrings("b", "b"),
[]tsdbutil.Sample{sample{1, 3}, sample{2, 2}, sample{3, 6}, sample{5, 1}, sample{6, 7}, sample{7, 2}},
),
}),
},
{
mint: 2,
maxt: 6,
ms: []*labels.Matcher{labels.MustNewMatcher(labels.MatchEqual, "a", "a")},
exp: newMockSeriesSet([]storage.Series{
storage.NewListSeries(labels.FromStrings("a", "a"),
[]tsdbutil.Sample{sample{2, 3}, sample{3, 4}, sample{5, 2}, sample{6, 3}},
),
storage.NewListSeries(labels.FromStrings("a", "a", "b", "b"),
[]tsdbutil.Sample{sample{2, 2}, sample{3, 3}, sample{5, 3}, sample{6, 6}},
),
}),
expChks: newMockChunkSeriesSet([]storage.ChunkSeries{
storage.NewListChunkSeriesFromSamples(labels.FromStrings("a", "a"),
[]tsdbutil.Sample{sample{2, 3}, sample{3, 4}, sample{5, 2}, sample{6, 3}},
),
storage.NewListChunkSeriesFromSamples(labels.FromStrings("a", "a", "b", "b"),
[]tsdbutil.Sample{sample{2, 2}, sample{3, 3}, sample{5, 3}, sample{6, 6}},
),
}),
},
} {
t.Run("", func(t *testing.T) {
opts := DefaultHeadOptions()
opts.ChunkRange = 2 * time.Hour.Milliseconds()
h, err := NewHead(nil, nil, nil, opts, nil)
require.NoError(t, err)
defer h.Close()
app := h.Appender(context.Background())
for _, s := range testData {
for _, chk := range s.chunks {
for _, sample := range chk {
_, err = app.Append(0, labels.FromMap(s.lset), sample.t, sample.v)
require.NoError(t, err)
}
}
}
require.NoError(t, app.Commit())
hr := NewRangeHead(h, c.mint, c.maxt)
ir, err := hr.Index()
require.NoError(t, err)
defer ir.Close()
cr, err := hr.Chunks()
require.NoError(t, err)
defer cr.Close()
testBlockQuerier(t, c, ir, cr, tombstones.NewMemTombstones())
})
}
}
var testData = []seriesSamples{
{
lset: map[string]string{"a": "a"},
chunks: [][]sample{
{{1, 2}, {2, 3}, {3, 4}},
{{5, 2}, {6, 3}, {7, 4}},
},
},
{
lset: map[string]string{"a": "a", "b": "b"},
chunks: [][]sample{
{{1, 1}, {2, 2}, {3, 3}},
{{5, 3}, {6, 6}},
},
},
{
lset: map[string]string{"b": "b"},
chunks: [][]sample{
{{1, 3}, {2, 2}, {3, 6}},
{{5, 1}, {6, 7}, {7, 2}},
},
},
}
func TestBlockQuerierDelete(t *testing.T) {
stones := tombstones.NewTestMemTombstones([]tombstones.Intervals{
{{Mint: 1, Maxt: 3}},
{{Mint: 1, Maxt: 3}, {Mint: 6, Maxt: 10}},
{{Mint: 6, Maxt: 10}},
})
for _, c := range []blockQuerierTestCase{
{
mint: 0,
maxt: 0,
ms: []*labels.Matcher{},
exp: newMockSeriesSet([]storage.Series{}),
expChks: newMockChunkSeriesSet([]storage.ChunkSeries{}),
},
{
mint: 0,
maxt: 0,
ms: []*labels.Matcher{labels.MustNewMatcher(labels.MatchEqual, "a", "a")},
exp: newMockSeriesSet([]storage.Series{}),
expChks: newMockChunkSeriesSet([]storage.ChunkSeries{}),
},
{
mint: 1,
maxt: 0,
ms: []*labels.Matcher{labels.MustNewMatcher(labels.MatchEqual, "a", "a")},
exp: newMockSeriesSet([]storage.Series{}),
expChks: newMockChunkSeriesSet([]storage.ChunkSeries{}),
},
{
mint: math.MinInt64,
maxt: math.MaxInt64,
ms: []*labels.Matcher{labels.MustNewMatcher(labels.MatchEqual, "a", "x")},
exp: newMockSeriesSet([]storage.Series{}),
expChks: newMockChunkSeriesSet([]storage.ChunkSeries{}),
},
{
mint: math.MinInt64,
maxt: math.MaxInt64,
ms: []*labels.Matcher{labels.MustNewMatcher(labels.MatchRegexp, "a", ".*")},
exp: newMockSeriesSet([]storage.Series{
storage.NewListSeries(labels.FromStrings("a", "a"),
[]tsdbutil.Sample{sample{5, 2}, sample{6, 3}, sample{7, 4}},
),
storage.NewListSeries(labels.FromStrings("a", "a", "b", "b"),
[]tsdbutil.Sample{sample{5, 3}},
),
storage.NewListSeries(labels.FromStrings("b", "b"),
[]tsdbutil.Sample{sample{1, 3}, sample{2, 2}, sample{3, 6}, sample{5, 1}},
),
}),
expChks: newMockChunkSeriesSet([]storage.ChunkSeries{
storage.NewListChunkSeriesFromSamples(labels.FromStrings("a", "a"),
[]tsdbutil.Sample{sample{5, 2}, sample{6, 3}, sample{7, 4}},
),
storage.NewListChunkSeriesFromSamples(labels.FromStrings("a", "a", "b", "b"),
[]tsdbutil.Sample{sample{5, 3}},
),
storage.NewListChunkSeriesFromSamples(labels.FromStrings("b", "b"),
[]tsdbutil.Sample{sample{1, 3}, sample{2, 2}, sample{3, 6}}, []tsdbutil.Sample{sample{5, 1}},
),
}),
},
{
mint: 2,
maxt: 6,
ms: []*labels.Matcher{labels.MustNewMatcher(labels.MatchEqual, "a", "a")},
exp: newMockSeriesSet([]storage.Series{
storage.NewListSeries(labels.FromStrings("a", "a"),
[]tsdbutil.Sample{sample{5, 2}, sample{6, 3}},
),
storage.NewListSeries(labels.FromStrings("a", "a", "b", "b"),
[]tsdbutil.Sample{sample{5, 3}},
),
}),
expChks: newMockChunkSeriesSet([]storage.ChunkSeries{
storage.NewListChunkSeriesFromSamples(labels.FromStrings("a", "a"),
[]tsdbutil.Sample{sample{5, 2}, sample{6, 3}},
),
storage.NewListChunkSeriesFromSamples(labels.FromStrings("a", "a", "b", "b"),
[]tsdbutil.Sample{sample{5, 3}},
),
}),
},
} {
t.Run("", func(t *testing.T) {
ir, cr, _, _ := createIdxChkReaders(t, testData)
testBlockQuerier(t, c, ir, cr, stones)
})
}
}
type fakeChunksReader struct {
ChunkReader
chks map[chunks.ChunkRef]chunkenc.Chunk
}
func createFakeReaderAndNotPopulatedChunks(s ...[]tsdbutil.Sample) (*fakeChunksReader, []chunks.Meta) {
f := &fakeChunksReader{
chks: map[chunks.ChunkRef]chunkenc.Chunk{},
}
chks := make([]chunks.Meta, 0, len(s))
for ref, samples := range s {
chk := tsdbutil.ChunkFromSamples(samples)
f.chks[chunks.ChunkRef(ref)] = chk.Chunk
chks = append(chks, chunks.Meta{
Ref: chunks.ChunkRef(ref),
MinTime: chk.MinTime,
MaxTime: chk.MaxTime,
})
}
return f, chks
}
func (r *fakeChunksReader) Chunk(ref chunks.ChunkRef) (chunkenc.Chunk, error) {
chk, ok := r.chks[ref]
if !ok {
return nil, errors.Errorf("chunk not found at ref %v", ref)
}
return chk, nil
}
func TestPopulateWithTombSeriesIterators(t *testing.T) {
cases := []struct {
name string
chks [][]tsdbutil.Sample
expected []tsdbutil.Sample
expectedChks []chunks.Meta
intervals tombstones.Intervals
// Seek being zero means do not test seek.
seek int64
seekSuccess bool
}{
{
name: "no chunk",
chks: [][]tsdbutil.Sample{},
},
{
name: "one empty chunk", // This should never happen.
chks: [][]tsdbutil.Sample{{}},
expectedChks: []chunks.Meta{
tsdbutil.ChunkFromSamples([]tsdbutil.Sample{}),
},
},
{
name: "three empty chunks", // This should never happen.
chks: [][]tsdbutil.Sample{{}, {}, {}},
expectedChks: []chunks.Meta{
tsdbutil.ChunkFromSamples([]tsdbutil.Sample{}),
tsdbutil.ChunkFromSamples([]tsdbutil.Sample{}),
tsdbutil.ChunkFromSamples([]tsdbutil.Sample{}),
},
},
{
name: "one chunk",
chks: [][]tsdbutil.Sample{
{sample{1, 2}, sample{2, 3}, sample{3, 5}, sample{6, 1}},
},
expected: []tsdbutil.Sample{
sample{1, 2}, sample{2, 3}, sample{3, 5}, sample{6, 1},
},
expectedChks: []chunks.Meta{
tsdbutil.ChunkFromSamples([]tsdbutil.Sample{
sample{1, 2}, sample{2, 3}, sample{3, 5}, sample{6, 1},
}),
},
},
{
name: "two full chunks",
chks: [][]tsdbutil.Sample{
{sample{1, 2}, sample{2, 3}, sample{3, 5}, sample{6, 1}},
{sample{7, 89}, sample{9, 8}},
},
expected: []tsdbutil.Sample{
sample{1, 2}, sample{2, 3}, sample{3, 5}, sample{6, 1}, sample{7, 89}, sample{9, 8},
},
expectedChks: []chunks.Meta{
tsdbutil.ChunkFromSamples([]tsdbutil.Sample{
sample{1, 2}, sample{2, 3}, sample{3, 5}, sample{6, 1},
}),
tsdbutil.ChunkFromSamples([]tsdbutil.Sample{
sample{7, 89}, sample{9, 8},
}),
},
},
{
name: "three full chunks",
chks: [][]tsdbutil.Sample{
{sample{1, 2}, sample{2, 3}, sample{3, 5}, sample{6, 1}},
{sample{7, 89}, sample{9, 8}},
{sample{10, 22}, sample{203, 3493}},
},
expected: []tsdbutil.Sample{
sample{1, 2}, sample{2, 3}, sample{3, 5}, sample{6, 1}, sample{7, 89}, sample{9, 8}, sample{10, 22}, sample{203, 3493},
},
expectedChks: []chunks.Meta{
tsdbutil.ChunkFromSamples([]tsdbutil.Sample{
sample{1, 2}, sample{2, 3}, sample{3, 5}, sample{6, 1},
}),
tsdbutil.ChunkFromSamples([]tsdbutil.Sample{
sample{7, 89}, sample{9, 8},
}),
tsdbutil.ChunkFromSamples([]tsdbutil.Sample{
sample{10, 22}, sample{203, 3493},
}),
},
},
// Seek cases.
{
name: "three empty chunks and seek", // This should never happen.
chks: [][]tsdbutil.Sample{{}, {}, {}},
seek: 1,
seekSuccess: false,
},
{
name: "two chunks and seek beyond chunks",
chks: [][]tsdbutil.Sample{
{sample{1, 2}, sample{3, 5}, sample{6, 1}},
{sample{7, 89}, sample{9, 8}},
},
seek: 10,
seekSuccess: false,
},
{
name: "two chunks and seek on middle of first chunk",
chks: [][]tsdbutil.Sample{
{sample{1, 2}, sample{3, 5}, sample{6, 1}},
{sample{7, 89}, sample{9, 8}},
},
seek: 2,
seekSuccess: true,
expected: []tsdbutil.Sample{
sample{3, 5}, sample{6, 1}, sample{7, 89}, sample{9, 8},
},
},
{
name: "two chunks and seek before first chunk",
chks: [][]tsdbutil.Sample{
{sample{1, 2}, sample{3, 5}, sample{6, 1}},
{sample{7, 89}, sample{9, 8}},
},
seek: -32,
seekSuccess: true,
expected: []tsdbutil.Sample{
sample{1, 2}, sample{3, 5}, sample{6, 1}, sample{7, 89}, sample{9, 8},
},
},
// Deletion / Trim cases.
{
name: "no chunk with deletion interval",
chks: [][]tsdbutil.Sample{},
intervals: tombstones.Intervals{{Mint: 20, Maxt: 21}},
},
{
name: "two chunks with trimmed first and last samples from edge chunks",
chks: [][]tsdbutil.Sample{
{sample{1, 2}, sample{2, 3}, sample{3, 5}, sample{6, 1}},
{sample{7, 89}, sample{9, 8}},
},
intervals: tombstones.Intervals{{Mint: math.MinInt64, Maxt: 2}}.Add(tombstones.Interval{Mint: 9, Maxt: math.MaxInt64}),
expected: []tsdbutil.Sample{
sample{3, 5}, sample{6, 1}, sample{7, 89},
},
expectedChks: []chunks.Meta{
tsdbutil.ChunkFromSamples([]tsdbutil.Sample{
sample{3, 5}, sample{6, 1},
}),
tsdbutil.ChunkFromSamples([]tsdbutil.Sample{
sample{7, 89},
}),
},
},
{
name: "two chunks with trimmed middle sample of first chunk",
chks: [][]tsdbutil.Sample{
{sample{1, 2}, sample{2, 3}, sample{3, 5}, sample{6, 1}},
{sample{7, 89}, sample{9, 8}},
},
intervals: tombstones.Intervals{{Mint: 2, Maxt: 3}},
expected: []tsdbutil.Sample{
sample{1, 2}, sample{6, 1}, sample{7, 89}, sample{9, 8},
},
expectedChks: []chunks.Meta{
tsdbutil.ChunkFromSamples([]tsdbutil.Sample{
sample{1, 2}, sample{6, 1},
}),
tsdbutil.ChunkFromSamples([]tsdbutil.Sample{
sample{7, 89}, sample{9, 8},
}),
},
},
{
name: "two chunks with deletion across two chunks",
chks: [][]tsdbutil.Sample{
{sample{1, 2}, sample{2, 3}, sample{3, 5}, sample{6, 1}},
{sample{7, 89}, sample{9, 8}},
},
intervals: tombstones.Intervals{{Mint: 6, Maxt: 7}},
expected: []tsdbutil.Sample{
sample{1, 2}, sample{2, 3}, sample{3, 5}, sample{9, 8},
},
expectedChks: []chunks.Meta{
tsdbutil.ChunkFromSamples([]tsdbutil.Sample{
sample{1, 2}, sample{2, 3}, sample{3, 5},
}),
tsdbutil.ChunkFromSamples([]tsdbutil.Sample{
sample{9, 8},
}),
},
},
// Deletion with seek.
{
name: "two chunks with trimmed first and last samples from edge chunks, seek from middle of first chunk",
chks: [][]tsdbutil.Sample{
{sample{1, 2}, sample{2, 3}, sample{3, 5}, sample{6, 1}},
{sample{7, 89}, sample{9, 8}},
},
intervals: tombstones.Intervals{{Mint: math.MinInt64, Maxt: 2}}.Add(tombstones.Interval{Mint: 9, Maxt: math.MaxInt64}),
seek: 3,
seekSuccess: true,
expected: []tsdbutil.Sample{
sample{3, 5}, sample{6, 1}, sample{7, 89},
},
},
}
for _, tc := range cases {
t.Run(tc.name, func(t *testing.T) {
t.Run("sample", func(t *testing.T) {
f, chkMetas := createFakeReaderAndNotPopulatedChunks(tc.chks...)
it := newPopulateWithDelGenericSeriesIterator(f, chkMetas, tc.intervals).toSeriesIterator()
var r []tsdbutil.Sample
if tc.seek != 0 {
require.Equal(t, tc.seekSuccess, it.Seek(tc.seek))
require.Equal(t, tc.seekSuccess, it.Seek(tc.seek)) // Next one should be noop.
if tc.seekSuccess {
// After successful seek iterator is ready. Grab the value.
t, v := it.At()
r = append(r, sample{t: t, v: v})
}
}
expandedResult, err := storage.ExpandSamples(it, newSample)
require.NoError(t, err)
r = append(r, expandedResult...)
require.Equal(t, tc.expected, r)
})
t.Run("chunk", func(t *testing.T) {
f, chkMetas := createFakeReaderAndNotPopulatedChunks(tc.chks...)
it := newPopulateWithDelGenericSeriesIterator(f, chkMetas, tc.intervals).toChunkSeriesIterator()
if tc.seek != 0 {
// Chunk iterator does not have Seek method.
return
}
expandedResult, err := storage.ExpandChunks(it)
require.NoError(t, err)
// We don't care about ref IDs for comparison, only chunk's samples matters.
rmChunkRefs(expandedResult)
rmChunkRefs(tc.expectedChks)
require.Equal(t, tc.expectedChks, expandedResult)
})
})
}
}
func rmChunkRefs(chks []chunks.Meta) {
for i := range chks {
chks[i].Ref = 0
}
}
// Regression for: https://github.com/prometheus/tsdb/pull/97
func TestPopulateWithDelSeriesIterator_DoubleSeek(t *testing.T) {
f, chkMetas := createFakeReaderAndNotPopulatedChunks(
[]tsdbutil.Sample{},
[]tsdbutil.Sample{sample{1, 1}, sample{2, 2}, sample{3, 3}},
[]tsdbutil.Sample{sample{4, 4}, sample{5, 5}},
)
it := newPopulateWithDelGenericSeriesIterator(f, chkMetas, nil).toSeriesIterator()
require.True(t, it.Seek(1))
require.True(t, it.Seek(2))
require.True(t, it.Seek(2))
ts, v := it.At()
require.Equal(t, int64(2), ts)
require.Equal(t, float64(2), v)
}
// Regression when seeked chunks were still found via binary search and we always
// skipped to the end when seeking a value in the current chunk.
func TestPopulateWithDelSeriesIterator_SeekInCurrentChunk(t *testing.T) {
f, chkMetas := createFakeReaderAndNotPopulatedChunks(
[]tsdbutil.Sample{},
[]tsdbutil.Sample{sample{1, 2}, sample{3, 4}, sample{5, 6}, sample{7, 8}},
[]tsdbutil.Sample{},
)
it := newPopulateWithDelGenericSeriesIterator(f, chkMetas, nil).toSeriesIterator()
require.True(t, it.Next())
ts, v := it.At()
require.Equal(t, int64(1), ts)
require.Equal(t, float64(2), v)
require.True(t, it.Seek(4))
ts, v = it.At()
require.Equal(t, int64(5), ts)
require.Equal(t, float64(6), v)
}
func TestPopulateWithDelSeriesIterator_SeekWithMinTime(t *testing.T) {
f, chkMetas := createFakeReaderAndNotPopulatedChunks(
[]tsdbutil.Sample{sample{1, 6}, sample{5, 6}, sample{6, 8}},
)
it := newPopulateWithDelGenericSeriesIterator(f, chkMetas, nil).toSeriesIterator()
require.Equal(t, false, it.Seek(7))
require.Equal(t, true, it.Seek(3))
}
// Regression when calling Next() with a time bounded to fit within two samples.
// Seek gets called and advances beyond the max time, which was just accepted as a valid sample.
func TestPopulateWithDelSeriesIterator_NextWithMinTime(t *testing.T) {
f, chkMetas := createFakeReaderAndNotPopulatedChunks(
[]tsdbutil.Sample{sample{1, 6}, sample{5, 6}, sample{7, 8}},
)
it := newPopulateWithDelGenericSeriesIterator(
f, chkMetas, tombstones.Intervals{{Mint: math.MinInt64, Maxt: 2}}.Add(tombstones.Interval{Mint: 4, Maxt: math.MaxInt64}),
).toSeriesIterator()
require.Equal(t, false, it.Next())
}
// Test the cost of merging series sets for different number of merged sets and their size.
// The subset are all equivalent so this does not capture merging of partial or non-overlapping sets well.
// TODO(bwplotka): Merge with storage merged series set benchmark.
func BenchmarkMergedSeriesSet(b *testing.B) {
sel := func(sets []storage.SeriesSet) storage.SeriesSet {
return storage.NewMergeSeriesSet(sets, storage.ChainedSeriesMerge)
}
for _, k := range []int{
100,
1000,
10000,
20000,
} {
for _, j := range []int{1, 2, 4, 8, 16, 32} {
b.Run(fmt.Sprintf("series=%d,blocks=%d", k, j), func(b *testing.B) {
lbls, err := labels.ReadLabels(filepath.Join("testdata", "20kseries.json"), k)
require.NoError(b, err)
sort.Sort(labels.Slice(lbls))
in := make([][]storage.Series, j)
for _, l := range lbls {
l2 := l
for j := range in {
in[j] = append(in[j], storage.NewListSeries(l2, nil))
}
}
b.ResetTimer()
for i := 0; i < b.N; i++ {
var sets []storage.SeriesSet
for _, s := range in {
sets = append(sets, newMockSeriesSet(s))
}
ms := sel(sets)
i := 0
for ms.Next() {
i++
}
require.NoError(b, ms.Err())
require.Equal(b, len(lbls), i)
}
})
}
}
}
type mockChunkReader map[chunks.ChunkRef]chunkenc.Chunk
func (cr mockChunkReader) Chunk(id chunks.ChunkRef) (chunkenc.Chunk, error) {
chk, ok := cr[id]
if ok {
return chk, nil
}
return nil, errors.New("Chunk with ref not found")
}
func (cr mockChunkReader) Close() error {
return nil
}
func TestDeletedIterator(t *testing.T) {
chk := chunkenc.NewXORChunk()
app, err := chk.Appender()
require.NoError(t, err)
// Insert random stuff from (0, 1000).
act := make([]sample, 1000)
for i := 0; i < 1000; i++ {
act[i].t = int64(i)
act[i].v = rand.Float64()
app.Append(act[i].t, act[i].v)
}
cases := []struct {
r tombstones.Intervals
}{
{r: tombstones.Intervals{{Mint: 1, Maxt: 20}}},
{r: tombstones.Intervals{{Mint: 1, Maxt: 10}, {Mint: 12, Maxt: 20}, {Mint: 21, Maxt: 23}, {Mint: 25, Maxt: 30}}},
{r: tombstones.Intervals{{Mint: 1, Maxt: 10}, {Mint: 12, Maxt: 20}, {Mint: 20, Maxt: 30}}},
{r: tombstones.Intervals{{Mint: 1, Maxt: 10}, {Mint: 12, Maxt: 23}, {Mint: 25, Maxt: 30}}},
{r: tombstones.Intervals{{Mint: 1, Maxt: 23}, {Mint: 12, Maxt: 20}, {Mint: 25, Maxt: 30}}},
{r: tombstones.Intervals{{Mint: 1, Maxt: 23}, {Mint: 12, Maxt: 20}, {Mint: 25, Maxt: 3000}}},
{r: tombstones.Intervals{{Mint: 0, Maxt: 2000}}},
{r: tombstones.Intervals{{Mint: 500, Maxt: 2000}}},
{r: tombstones.Intervals{{Mint: 0, Maxt: 200}}},
{r: tombstones.Intervals{{Mint: 1000, Maxt: 20000}}},
}
for _, c := range cases {
i := int64(-1)
it := &DeletedIterator{Iter: chk.Iterator(nil), Intervals: c.r[:]}
ranges := c.r[:]
for it.Next() {
i++
for _, tr := range ranges {
if tr.InBounds(i) {
i = tr.Maxt + 1
ranges = ranges[1:]
}
}
require.Less(t, i, int64(1000))
ts, v := it.At()
require.Equal(t, act[i].t, ts)
require.Equal(t, act[i].v, v)
}
// There has been an extra call to Next().
i++
for _, tr := range ranges {
if tr.InBounds(i) {
i = tr.Maxt + 1
ranges = ranges[1:]
}
}
require.GreaterOrEqual(t, i, int64(1000))
require.NoError(t, it.Err())
}
}
func TestDeletedIterator_WithSeek(t *testing.T) {
chk := chunkenc.NewXORChunk()
app, err := chk.Appender()
require.NoError(t, err)
// Insert random stuff from (0, 1000).
act := make([]sample, 1000)
for i := 0; i < 1000; i++ {
act[i].t = int64(i)
act[i].v = float64(i)
app.Append(act[i].t, act[i].v)
}
cases := []struct {
r tombstones.Intervals
seek int64
ok bool
seekedTs int64
}{
{r: tombstones.Intervals{{Mint: 1, Maxt: 20}}, seek: 1, ok: true, seekedTs: 21},
{r: tombstones.Intervals{{Mint: 1, Maxt: 20}}, seek: 20, ok: true, seekedTs: 21},
{r: tombstones.Intervals{{Mint: 1, Maxt: 20}}, seek: 10, ok: true, seekedTs: 21},
{r: tombstones.Intervals{{Mint: 1, Maxt: 20}}, seek: 999, ok: true, seekedTs: 999},
{r: tombstones.Intervals{{Mint: 1, Maxt: 20}}, seek: 1000, ok: false},
{r: tombstones.Intervals{{Mint: 1, Maxt: 23}, {Mint: 24, Maxt: 40}, {Mint: 45, Maxt: 3000}}, seek: 1, ok: true, seekedTs: 41},
{r: tombstones.Intervals{{Mint: 5, Maxt: 23}, {Mint: 24, Maxt: 40}, {Mint: 41, Maxt: 3000}}, seek: 5, ok: false},
{r: tombstones.Intervals{{Mint: 0, Maxt: 2000}}, seek: 10, ok: false},
{r: tombstones.Intervals{{Mint: 500, Maxt: 2000}}, seek: 10, ok: true, seekedTs: 10},
{r: tombstones.Intervals{{Mint: 500, Maxt: 2000}}, seek: 501, ok: false},
}
for _, c := range cases {
it := &DeletedIterator{Iter: chk.Iterator(nil), Intervals: c.r[:]}
require.Equal(t, c.ok, it.Seek(c.seek))
if c.ok {
ts, _ := it.At()
require.Equal(t, c.seekedTs, ts)
}
}
}
type series struct {
l labels.Labels
chunks []chunks.Meta
}
type mockIndex struct {
series map[storage.SeriesRef]series
postings map[labels.Label][]storage.SeriesRef
symbols map[string]struct{}
}
func newMockIndex() mockIndex {
ix := mockIndex{
series: make(map[storage.SeriesRef]series),
postings: make(map[labels.Label][]storage.SeriesRef),
symbols: make(map[string]struct{}),
}
return ix
}
func (m mockIndex) Symbols() index.StringIter {
l := []string{}
for s := range m.symbols {
l = append(l, s)
}
sort.Strings(l)
return index.NewStringListIter(l)
}
func (m *mockIndex) AddSeries(ref storage.SeriesRef, l labels.Labels, chunks ...chunks.Meta) error {
if _, ok := m.series[ref]; ok {
return errors.Errorf("series with reference %d already added", ref)
}
for _, lbl := range l {
m.symbols[lbl.Name] = struct{}{}
m.symbols[lbl.Value] = struct{}{}
}
s := series{l: l}
// Actual chunk data is not stored in the index.
for _, c := range chunks {
c.Chunk = nil
s.chunks = append(s.chunks, c)
}
m.series[ref] = s
return nil
}
func (m mockIndex) WritePostings(name, value string, it index.Postings) error {
l := labels.Label{Name: name, Value: value}
if _, ok := m.postings[l]; ok {
return errors.Errorf("postings for %s already added", l)
}
ep, err := index.ExpandPostings(it)
if err != nil {
return err
}
m.postings[l] = ep
return nil
}
func (m mockIndex) Close() error {
return nil
}
func (m mockIndex) SortedLabelValues(name string, matchers ...*labels.Matcher) ([]string, error) {
values, _ := m.LabelValues(name, matchers...)
sort.Strings(values)
return values, nil
}
func (m mockIndex) LabelValues(name string, matchers ...*labels.Matcher) ([]string, error) {
var values []string
if len(matchers) == 0 {
for l := range m.postings {
if l.Name == name {
values = append(values, l.Value)
}
}
return values, nil
}
for _, series := range m.series {
for _, matcher := range matchers {
if matcher.Matches(series.l.Get(matcher.Name)) {
// TODO(colega): shouldn't we check all the matchers before adding this to the values?
values = append(values, series.l.Get(name))
}
}
}
return values, nil
}
func (m mockIndex) LabelValueFor(id storage.SeriesRef, label string) (string, error) {
return m.series[id].l.Get(label), nil
}
func (m mockIndex) LabelNamesFor(ids ...storage.SeriesRef) ([]string, error) {
namesMap := make(map[string]bool)
for _, id := range ids {
for _, lbl := range m.series[id].l {
namesMap[lbl.Name] = true
}
}
names := make([]string, 0, len(namesMap))
for name := range namesMap {
names = append(names, name)
}
return names, nil
}
func (m mockIndex) Postings(name string, values ...string) (index.Postings, error) {
res := make([]index.Postings, 0, len(values))
for _, value := range values {
l := labels.Label{Name: name, Value: value}
res = append(res, index.NewListPostings(m.postings[l]))
}
return index.Merge(res...), nil
}
func (m mockIndex) SortedPostings(p index.Postings) index.Postings {
ep, err := index.ExpandPostings(p)
if err != nil {
return index.ErrPostings(errors.Wrap(err, "expand postings"))
}
sort.Slice(ep, func(i, j int) bool {
return labels.Compare(m.series[ep[i]].l, m.series[ep[j]].l) < 0
})
return index.NewListPostings(ep)
}
func (m mockIndex) Series(ref storage.SeriesRef, lset *labels.Labels, chks *[]chunks.Meta) error {
s, ok := m.series[ref]
if !ok {
return storage.ErrNotFound
}
*lset = append((*lset)[:0], s.l...)
*chks = append((*chks)[:0], s.chunks...)
return nil
}
func (m mockIndex) LabelNames(matchers ...*labels.Matcher) ([]string, error) {
names := map[string]struct{}{}
if len(matchers) == 0 {
for l := range m.postings {
names[l.Name] = struct{}{}
}
} else {
for _, series := range m.series {
matches := true
for _, matcher := range matchers {
matches = matches || matcher.Matches(series.l.Get(matcher.Name))
if !matches {
break
}
}
if matches {
for _, lbl := range series.l {
names[lbl.Name] = struct{}{}
}
}
}
}
l := make([]string, 0, len(names))
for name := range names {
l = append(l, name)
}
sort.Strings(l)
return l, nil
}
func BenchmarkQueryIterator(b *testing.B) {
cases := []struct {
numBlocks int
numSeries int
numSamplesPerSeriesPerBlock int
overlapPercentages []int // >=0, <=100, this is w.r.t. the previous block.
}{
{
numBlocks: 20,
numSeries: 1000,
numSamplesPerSeriesPerBlock: 20000,
overlapPercentages: []int{0, 10, 30},
},
}
for _, c := range cases {
for _, overlapPercentage := range c.overlapPercentages {
benchMsg := fmt.Sprintf("nBlocks=%d,nSeries=%d,numSamplesPerSeriesPerBlock=%d,overlap=%d%%",
c.numBlocks, c.numSeries, c.numSamplesPerSeriesPerBlock, overlapPercentage)
b.Run(benchMsg, func(b *testing.B) {
dir := b.TempDir()
var (
blocks []*Block
overlapDelta = int64(overlapPercentage * c.numSamplesPerSeriesPerBlock / 100)
prefilledLabels []map[string]string
generatedSeries []storage.Series
)
for i := int64(0); i < int64(c.numBlocks); i++ {
offset := i * overlapDelta
mint := i*int64(c.numSamplesPerSeriesPerBlock) - offset
maxt := mint + int64(c.numSamplesPerSeriesPerBlock) - 1
if len(prefilledLabels) == 0 {
generatedSeries = genSeries(c.numSeries, 10, mint, maxt)
for _, s := range generatedSeries {
prefilledLabels = append(prefilledLabels, s.Labels().Map())
}
} else {
generatedSeries = populateSeries(prefilledLabels, mint, maxt)
}
block, err := OpenBlock(nil, createBlock(b, dir, generatedSeries), nil)
require.NoError(b, err)
blocks = append(blocks, block)
defer block.Close()
}
qblocks := make([]storage.Querier, 0, len(blocks))
for _, blk := range blocks {
q, err := NewBlockQuerier(blk, math.MinInt64, math.MaxInt64)
require.NoError(b, err)
qblocks = append(qblocks, q)
}
sq := storage.NewMergeQuerier(qblocks, nil, storage.ChainedSeriesMerge)
defer sq.Close()
benchQuery(b, c.numSeries, sq, labels.Selector{labels.MustNewMatcher(labels.MatchRegexp, "__name__", ".*")})
})
}
}
}
func BenchmarkQuerySeek(b *testing.B) {
cases := []struct {
numBlocks int
numSeries int
numSamplesPerSeriesPerBlock int
overlapPercentages []int // >=0, <=100, this is w.r.t. the previous block.
}{
{
numBlocks: 20,
numSeries: 100,
numSamplesPerSeriesPerBlock: 2000,
overlapPercentages: []int{0, 10, 30, 50},
},
}
for _, c := range cases {
for _, overlapPercentage := range c.overlapPercentages {
benchMsg := fmt.Sprintf("nBlocks=%d,nSeries=%d,numSamplesPerSeriesPerBlock=%d,overlap=%d%%",
c.numBlocks, c.numSeries, c.numSamplesPerSeriesPerBlock, overlapPercentage)
b.Run(benchMsg, func(b *testing.B) {
dir := b.TempDir()
var (
blocks []*Block
overlapDelta = int64(overlapPercentage * c.numSamplesPerSeriesPerBlock / 100)
prefilledLabels []map[string]string
generatedSeries []storage.Series
)
for i := int64(0); i < int64(c.numBlocks); i++ {
offset := i * overlapDelta
mint := i*int64(c.numSamplesPerSeriesPerBlock) - offset
maxt := mint + int64(c.numSamplesPerSeriesPerBlock) - 1
if len(prefilledLabels) == 0 {
generatedSeries = genSeries(c.numSeries, 10, mint, maxt)
for _, s := range generatedSeries {
prefilledLabels = append(prefilledLabels, s.Labels().Map())
}
} else {
generatedSeries = populateSeries(prefilledLabels, mint, maxt)
}
block, err := OpenBlock(nil, createBlock(b, dir, generatedSeries), nil)
require.NoError(b, err)
blocks = append(blocks, block)
defer block.Close()
}
qblocks := make([]storage.Querier, 0, len(blocks))
for _, blk := range blocks {
q, err := NewBlockQuerier(blk, math.MinInt64, math.MaxInt64)
require.NoError(b, err)
qblocks = append(qblocks, q)
}
sq := storage.NewMergeQuerier(qblocks, nil, storage.ChainedSeriesMerge)
defer sq.Close()
mint := blocks[0].meta.MinTime
maxt := blocks[len(blocks)-1].meta.MaxTime
b.ResetTimer()
b.ReportAllocs()
ss := sq.Select(false, nil, labels.MustNewMatcher(labels.MatchRegexp, "__name__", ".*"))
for ss.Next() {
it := ss.At().Iterator()
for t := mint; t <= maxt; t++ {
it.Seek(t)
}
require.NoError(b, it.Err())
}
require.NoError(b, ss.Err())
require.Equal(b, 0, len(ss.Warnings()))
})
}
}
}
// Refer to https://github.com/prometheus/prometheus/issues/2651.
func BenchmarkSetMatcher(b *testing.B) {
cases := []struct {
numBlocks int
numSeries int
numSamplesPerSeriesPerBlock int
cardinality int
pattern string
}{
// The first three cases are to find out whether the set
// matcher is always faster than regex matcher.
{
numBlocks: 1,
numSeries: 1,
numSamplesPerSeriesPerBlock: 10,
cardinality: 100,
pattern: "1|2|3|4|5|6|7|8|9|10",
},
{
numBlocks: 1,
numSeries: 15,
numSamplesPerSeriesPerBlock: 10,
cardinality: 100,
pattern: "1|2|3|4|5|6|7|8|9|10",
},
{
numBlocks: 1,
numSeries: 15,
numSamplesPerSeriesPerBlock: 10,
cardinality: 100,
pattern: "1|2|3",
},
// Big data sizes benchmarks.
{
numBlocks: 20,
numSeries: 1000,
numSamplesPerSeriesPerBlock: 10,
cardinality: 100,
pattern: "1|2|3",
},
{
numBlocks: 20,
numSeries: 1000,
numSamplesPerSeriesPerBlock: 10,
cardinality: 100,
pattern: "1|2|3|4|5|6|7|8|9|10",
},
// Increase cardinality.
{
numBlocks: 1,
numSeries: 100000,
numSamplesPerSeriesPerBlock: 10,
cardinality: 100000,
pattern: "1|2|3|4|5|6|7|8|9|10",
},
{
numBlocks: 1,
numSeries: 500000,
numSamplesPerSeriesPerBlock: 10,
cardinality: 500000,
pattern: "1|2|3|4|5|6|7|8|9|10",
},
{
numBlocks: 10,
numSeries: 500000,
numSamplesPerSeriesPerBlock: 10,
cardinality: 500000,
pattern: "1|2|3|4|5|6|7|8|9|10",
},
{
numBlocks: 1,
numSeries: 1000000,
numSamplesPerSeriesPerBlock: 10,
cardinality: 1000000,
pattern: "1|2|3|4|5|6|7|8|9|10",
},
}
for _, c := range cases {
dir := b.TempDir()
var (
blocks []*Block
prefilledLabels []map[string]string
generatedSeries []storage.Series
)
for i := int64(0); i < int64(c.numBlocks); i++ {
mint := i * int64(c.numSamplesPerSeriesPerBlock)
maxt := mint + int64(c.numSamplesPerSeriesPerBlock) - 1
if len(prefilledLabels) == 0 {
generatedSeries = genSeries(c.numSeries, 10, mint, maxt)
for _, s := range generatedSeries {
prefilledLabels = append(prefilledLabels, s.Labels().Map())
}
} else {
generatedSeries = populateSeries(prefilledLabels, mint, maxt)
}
block, err := OpenBlock(nil, createBlock(b, dir, generatedSeries), nil)
require.NoError(b, err)
blocks = append(blocks, block)
defer block.Close()
}
qblocks := make([]storage.Querier, 0, len(blocks))
for _, blk := range blocks {
q, err := NewBlockQuerier(blk, math.MinInt64, math.MaxInt64)
require.NoError(b, err)
qblocks = append(qblocks, q)
}
sq := storage.NewMergeQuerier(qblocks, nil, storage.ChainedSeriesMerge)
defer sq.Close()
benchMsg := fmt.Sprintf("nSeries=%d,nBlocks=%d,cardinality=%d,pattern=\"%s\"", c.numSeries, c.numBlocks, c.cardinality, c.pattern)
b.Run(benchMsg, func(b *testing.B) {
b.ResetTimer()
b.ReportAllocs()
for n := 0; n < b.N; n++ {
ss := sq.Select(false, nil, labels.MustNewMatcher(labels.MatchRegexp, "test", c.pattern))
for ss.Next() {
}
require.NoError(b, ss.Err())
require.Equal(b, 0, len(ss.Warnings()))
}
})
}
}
// Refer to https://github.com/prometheus/prometheus/issues/2651.
func TestFindSetMatches(t *testing.T) {
cases := []struct {
pattern string
exp []string
}{
// Single value, coming from a `bar=~"foo"` selector.
{
pattern: "^(?:foo)$",
exp: []string{
"foo",
},
},
// Simple sets.
{
pattern: "^(?:foo|bar|baz)$",
exp: []string{
"foo",
"bar",
"baz",
},
},
// Simple sets containing escaped characters.
{
pattern: "^(?:fo\\.o|bar\\?|\\^baz)$",
exp: []string{
"fo.o",
"bar?",
"^baz",
},
},
// Simple sets containing special characters without escaping.
{
pattern: "^(?:fo.o|bar?|^baz)$",
exp: nil,
},
// Missing wrapper.
{
pattern: "foo|bar|baz",
exp: nil,
},
}
for _, c := range cases {
matches := findSetMatches(c.pattern)
if len(c.exp) == 0 {
if len(matches) != 0 {
t.Errorf("Evaluating %s, unexpected result %v", c.pattern, matches)
}
} else {
if len(matches) != len(c.exp) {
t.Errorf("Evaluating %s, length of result not equal to exp", c.pattern)
} else {
for i := 0; i < len(c.exp); i++ {
if c.exp[i] != matches[i] {
t.Errorf("Evaluating %s, unexpected result %s", c.pattern, matches[i])
}
}
}
}
}
}
func TestPostingsForMatchers(t *testing.T) {
chunkDir := t.TempDir()
opts := DefaultHeadOptions()
opts.ChunkRange = 1000
opts.ChunkDirRoot = chunkDir
h, err := NewHead(nil, nil, nil, opts, nil)
require.NoError(t, err)
defer func() {
require.NoError(t, h.Close())
}()
app := h.Appender(context.Background())
app.Append(0, labels.FromStrings("n", "1"), 0, 0)
app.Append(0, labels.FromStrings("n", "1", "i", "a"), 0, 0)
app.Append(0, labels.FromStrings("n", "1", "i", "b"), 0, 0)
app.Append(0, labels.FromStrings("n", "2"), 0, 0)
app.Append(0, labels.FromStrings("n", "2.5"), 0, 0)
require.NoError(t, app.Commit())
cases := []struct {
matchers []*labels.Matcher
exp []labels.Labels
}{
// Simple equals.
{
matchers: []*labels.Matcher{labels.MustNewMatcher(labels.MatchEqual, "n", "1")},
exp: []labels.Labels{
labels.FromStrings("n", "1"),
labels.FromStrings("n", "1", "i", "a"),
labels.FromStrings("n", "1", "i", "b"),
},
},
{
matchers: []*labels.Matcher{labels.MustNewMatcher(labels.MatchEqual, "n", "1"), labels.MustNewMatcher(labels.MatchEqual, "i", "a")},
exp: []labels.Labels{
labels.FromStrings("n", "1", "i", "a"),
},
},
{
matchers: []*labels.Matcher{labels.MustNewMatcher(labels.MatchEqual, "n", "1"), labels.MustNewMatcher(labels.MatchEqual, "i", "missing")},
exp: []labels.Labels{},
},
{
matchers: []*labels.Matcher{labels.MustNewMatcher(labels.MatchEqual, "missing", "")},
exp: []labels.Labels{
labels.FromStrings("n", "1"),
labels.FromStrings("n", "1", "i", "a"),
labels.FromStrings("n", "1", "i", "b"),
labels.FromStrings("n", "2"),
labels.FromStrings("n", "2.5"),
},
},
// Not equals.
{
matchers: []*labels.Matcher{labels.MustNewMatcher(labels.MatchNotEqual, "n", "1")},
exp: []labels.Labels{
labels.FromStrings("n", "2"),
labels.FromStrings("n", "2.5"),
},
},
{
matchers: []*labels.Matcher{labels.MustNewMatcher(labels.MatchNotEqual, "i", "")},
exp: []labels.Labels{
labels.FromStrings("n", "1", "i", "a"),
labels.FromStrings("n", "1", "i", "b"),
},
},
{
matchers: []*labels.Matcher{labels.MustNewMatcher(labels.MatchNotEqual, "missing", "")},
exp: []labels.Labels{},
},
{
matchers: []*labels.Matcher{labels.MustNewMatcher(labels.MatchEqual, "n", "1"), labels.MustNewMatcher(labels.MatchNotEqual, "i", "a")},
exp: []labels.Labels{
labels.FromStrings("n", "1"),
labels.FromStrings("n", "1", "i", "b"),
},
},
{
matchers: []*labels.Matcher{labels.MustNewMatcher(labels.MatchEqual, "n", "1"), labels.MustNewMatcher(labels.MatchNotEqual, "i", "")},
exp: []labels.Labels{
labels.FromStrings("n", "1", "i", "a"),
labels.FromStrings("n", "1", "i", "b"),
},
},
// Regex.
{
matchers: []*labels.Matcher{labels.MustNewMatcher(labels.MatchRegexp, "n", "^1$")},
exp: []labels.Labels{
labels.FromStrings("n", "1"),
labels.FromStrings("n", "1", "i", "a"),
labels.FromStrings("n", "1", "i", "b"),
},
},
{
matchers: []*labels.Matcher{labels.MustNewMatcher(labels.MatchEqual, "n", "1"), labels.MustNewMatcher(labels.MatchRegexp, "i", "^a$")},
exp: []labels.Labels{
labels.FromStrings("n", "1", "i", "a"),
},
},
{
matchers: []*labels.Matcher{labels.MustNewMatcher(labels.MatchEqual, "n", "1"), labels.MustNewMatcher(labels.MatchRegexp, "i", "^a?$")},
exp: []labels.Labels{
labels.FromStrings("n", "1"),
labels.FromStrings("n", "1", "i", "a"),
},
},
{
matchers: []*labels.Matcher{labels.MustNewMatcher(labels.MatchRegexp, "i", "^$")},
exp: []labels.Labels{
labels.FromStrings("n", "1"),
labels.FromStrings("n", "2"),
labels.FromStrings("n", "2.5"),
},
},
{
matchers: []*labels.Matcher{labels.MustNewMatcher(labels.MatchEqual, "n", "1"), labels.MustNewMatcher(labels.MatchRegexp, "i", "^$")},
exp: []labels.Labels{
labels.FromStrings("n", "1"),
},
},
{
matchers: []*labels.Matcher{labels.MustNewMatcher(labels.MatchEqual, "n", "1"), labels.MustNewMatcher(labels.MatchRegexp, "i", "^.*$")},
exp: []labels.Labels{
labels.FromStrings("n", "1"),
labels.FromStrings("n", "1", "i", "a"),
labels.FromStrings("n", "1", "i", "b"),
},
},
{
matchers: []*labels.Matcher{labels.MustNewMatcher(labels.MatchEqual, "n", "1"), labels.MustNewMatcher(labels.MatchRegexp, "i", "^.+$")},
exp: []labels.Labels{
labels.FromStrings("n", "1", "i", "a"),
labels.FromStrings("n", "1", "i", "b"),
},
},
// Not regex.
{
matchers: []*labels.Matcher{labels.MustNewMatcher(labels.MatchNotRegexp, "n", "^1$")},
exp: []labels.Labels{
labels.FromStrings("n", "2"),
labels.FromStrings("n", "2.5"),
},
},
{
matchers: []*labels.Matcher{labels.MustNewMatcher(labels.MatchEqual, "n", "1"), labels.MustNewMatcher(labels.MatchNotRegexp, "i", "^a$")},
exp: []labels.Labels{
labels.FromStrings("n", "1"),
labels.FromStrings("n", "1", "i", "b"),
},
},
{
matchers: []*labels.Matcher{labels.MustNewMatcher(labels.MatchEqual, "n", "1"), labels.MustNewMatcher(labels.MatchNotRegexp, "i", "^a?$")},
exp: []labels.Labels{
labels.FromStrings("n", "1", "i", "b"),
},
},
{
matchers: []*labels.Matcher{labels.MustNewMatcher(labels.MatchEqual, "n", "1"), labels.MustNewMatcher(labels.MatchNotRegexp, "i", "^$")},
exp: []labels.Labels{
labels.FromStrings("n", "1", "i", "a"),
labels.FromStrings("n", "1", "i", "b"),
},
},
{
matchers: []*labels.Matcher{labels.MustNewMatcher(labels.MatchEqual, "n", "1"), labels.MustNewMatcher(labels.MatchNotRegexp, "i", "^.*$")},
exp: []labels.Labels{},
},
{
matchers: []*labels.Matcher{labels.MustNewMatcher(labels.MatchEqual, "n", "1"), labels.MustNewMatcher(labels.MatchNotRegexp, "i", "^.+$")},
exp: []labels.Labels{
labels.FromStrings("n", "1"),
},
},
// Combinations.
{
matchers: []*labels.Matcher{labels.MustNewMatcher(labels.MatchEqual, "n", "1"), labels.MustNewMatcher(labels.MatchNotEqual, "i", ""), labels.MustNewMatcher(labels.MatchEqual, "i", "a")},
exp: []labels.Labels{
labels.FromStrings("n", "1", "i", "a"),
},
},
{
matchers: []*labels.Matcher{labels.MustNewMatcher(labels.MatchEqual, "n", "1"), labels.MustNewMatcher(labels.MatchNotEqual, "i", "b"), labels.MustNewMatcher(labels.MatchRegexp, "i", "^(b|a).*$")},
exp: []labels.Labels{
labels.FromStrings("n", "1", "i", "a"),
},
},
// Set optimization for Regex.
// Refer to https://github.com/prometheus/prometheus/issues/2651.
{
matchers: []*labels.Matcher{labels.MustNewMatcher(labels.MatchRegexp, "n", "1|2")},
exp: []labels.Labels{
labels.FromStrings("n", "1"),
labels.FromStrings("n", "1", "i", "a"),
labels.FromStrings("n", "1", "i", "b"),
labels.FromStrings("n", "2"),
},
},
{
matchers: []*labels.Matcher{labels.MustNewMatcher(labels.MatchRegexp, "i", "a|b")},
exp: []labels.Labels{
labels.FromStrings("n", "1", "i", "a"),
labels.FromStrings("n", "1", "i", "b"),
},
},
{
matchers: []*labels.Matcher{labels.MustNewMatcher(labels.MatchRegexp, "n", "x1|2")},
exp: []labels.Labels{
labels.FromStrings("n", "2"),
},
},
{
matchers: []*labels.Matcher{labels.MustNewMatcher(labels.MatchRegexp, "n", "2|2\\.5")},
exp: []labels.Labels{
labels.FromStrings("n", "2"),
labels.FromStrings("n", "2.5"),
},
},
// Empty value.
{
matchers: []*labels.Matcher{labels.MustNewMatcher(labels.MatchRegexp, "i", "c||d")},
exp: []labels.Labels{
labels.FromStrings("n", "1"),
labels.FromStrings("n", "2"),
labels.FromStrings("n", "2.5"),
},
},
}
ir, err := h.Index()
require.NoError(t, err)
for _, c := range cases {
exp := map[string]struct{}{}
for _, l := range c.exp {
exp[l.String()] = struct{}{}
}
p, err := PostingsForMatchers(ir, c.matchers...)
require.NoError(t, err)
for p.Next() {
lbls := labels.Labels{}
require.NoError(t, ir.Series(p.At(), &lbls, &[]chunks.Meta{}))
if _, ok := exp[lbls.String()]; !ok {
t.Errorf("Evaluating %v, unexpected result %s", c.matchers, lbls.String())
} else {
delete(exp, lbls.String())
}
}
require.NoError(t, p.Err())
if len(exp) != 0 {
t.Errorf("Evaluating %v, missing results %+v", c.matchers, exp)
}
}
}
// TestClose ensures that calling Close more than once doesn't block and doesn't panic.
func TestClose(t *testing.T) {
dir := t.TempDir()
createBlock(t, dir, genSeries(1, 1, 0, 10))
createBlock(t, dir, genSeries(1, 1, 10, 20))
db, err := Open(dir, nil, nil, DefaultOptions(), nil)
if err != nil {
t.Fatalf("Opening test storage failed: %s", err)
}
defer func() {
require.NoError(t, db.Close())
}()
q, err := db.Querier(context.TODO(), 0, 20)
require.NoError(t, err)
require.NoError(t, q.Close())
require.Error(t, q.Close())
}
func BenchmarkQueries(b *testing.B) {
cases := map[string]labels.Selector{
"Eq Matcher: Expansion - 1": {
labels.MustNewMatcher(labels.MatchEqual, "la", "va"),
},
"Eq Matcher: Expansion - 2": {
labels.MustNewMatcher(labels.MatchEqual, "la", "va"),
labels.MustNewMatcher(labels.MatchEqual, "lb", "vb"),
},
"Eq Matcher: Expansion - 3": {
labels.MustNewMatcher(labels.MatchEqual, "la", "va"),
labels.MustNewMatcher(labels.MatchEqual, "lb", "vb"),
labels.MustNewMatcher(labels.MatchEqual, "lc", "vc"),
},
"Regex Matcher: Expansion - 1": {
labels.MustNewMatcher(labels.MatchRegexp, "la", ".*va"),
},
"Regex Matcher: Expansion - 2": {
labels.MustNewMatcher(labels.MatchRegexp, "la", ".*va"),
labels.MustNewMatcher(labels.MatchRegexp, "lb", ".*vb"),
},
"Regex Matcher: Expansion - 3": {
labels.MustNewMatcher(labels.MatchRegexp, "la", ".*va"),
labels.MustNewMatcher(labels.MatchRegexp, "lb", ".*vb"),
labels.MustNewMatcher(labels.MatchRegexp, "lc", ".*vc"),
},
}
queryTypes := make(map[string]storage.Querier)
defer func() {
for _, q := range queryTypes {
// Can't run a check for error here as some of these will fail as
// queryTypes is using the same slice for the different block queriers
// and would have been closed in the previous iteration.
q.Close()
}
}()
for title, selectors := range cases {
for _, nSeries := range []int{10} {
for _, nSamples := range []int64{1000, 10000, 100000} {
dir := b.TempDir()
series := genSeries(nSeries, 5, 1, nSamples)
// Add some common labels to make the matchers select these series.
{
var commonLbls labels.Labels
for _, selector := range selectors {
switch selector.Type {
case labels.MatchEqual:
commonLbls = append(commonLbls, labels.Label{Name: selector.Name, Value: selector.Value})
case labels.MatchRegexp:
commonLbls = append(commonLbls, labels.Label{Name: selector.Name, Value: selector.Value})
}
}
for i := range commonLbls {
s := series[i].(*storage.SeriesEntry)
allLabels := append(commonLbls, s.Labels()...)
newS := storage.NewListSeries(allLabels, nil)
newS.SampleIteratorFn = s.SampleIteratorFn
series[i] = newS
}
}
qs := make([]storage.Querier, 0, 10)
for x := 0; x <= 10; x++ {
block, err := OpenBlock(nil, createBlock(b, dir, series), nil)
require.NoError(b, err)
q, err := NewBlockQuerier(block, 1, int64(nSamples))
require.NoError(b, err)
qs = append(qs, q)
}
queryTypes["_1-Block"] = storage.NewMergeQuerier(qs[:1], nil, storage.ChainedSeriesMerge)
queryTypes["_3-Blocks"] = storage.NewMergeQuerier(qs[0:3], nil, storage.ChainedSeriesMerge)
queryTypes["_10-Blocks"] = storage.NewMergeQuerier(qs, nil, storage.ChainedSeriesMerge)
chunkDir := b.TempDir()
head := createHead(b, nil, series, chunkDir)
qHead, err := NewBlockQuerier(head, 1, nSamples)
require.NoError(b, err)
queryTypes["_Head"] = qHead
for qtype, querier := range queryTypes {
b.Run(title+qtype+"_nSeries:"+strconv.Itoa(nSeries)+"_nSamples:"+strconv.Itoa(int(nSamples)), func(b *testing.B) {
expExpansions, err := strconv.Atoi(string(title[len(title)-1]))
require.NoError(b, err)
benchQuery(b, expExpansions, querier, selectors)
})
}
require.NoError(b, head.Close())
}
}
}
}
func benchQuery(b *testing.B, expExpansions int, q storage.Querier, selectors labels.Selector) {
b.ResetTimer()
b.ReportAllocs()
for i := 0; i < b.N; i++ {
ss := q.Select(false, nil, selectors...)
var actualExpansions int
for ss.Next() {
s := ss.At()
s.Labels()
it := s.Iterator()
for it.Next() {
}
actualExpansions++
}
require.NoError(b, ss.Err())
require.Equal(b, 0, len(ss.Warnings()))
require.Equal(b, expExpansions, actualExpansions)
require.NoError(b, ss.Err())
}
}
// mockMatcherIndex is used to check if the regex matcher works as expected.
type mockMatcherIndex struct{}
func (m mockMatcherIndex) Symbols() index.StringIter { return nil }
func (m mockMatcherIndex) Close() error { return nil }
// SortedLabelValues will return error if it is called.
func (m mockMatcherIndex) SortedLabelValues(name string, matchers ...*labels.Matcher) ([]string, error) {
return []string{}, errors.New("sorted label values called")
}
// LabelValues will return error if it is called.
func (m mockMatcherIndex) LabelValues(name string, matchers ...*labels.Matcher) ([]string, error) {
return []string{}, errors.New("label values called")
}
func (m mockMatcherIndex) LabelValueFor(id storage.SeriesRef, label string) (string, error) {
return "", errors.New("label value for called")
}
func (m mockMatcherIndex) LabelNamesFor(ids ...storage.SeriesRef) ([]string, error) {
return nil, errors.New("label names for for called")
}
func (m mockMatcherIndex) Postings(name string, values ...string) (index.Postings, error) {
return index.EmptyPostings(), nil
}
func (m mockMatcherIndex) SortedPostings(p index.Postings) index.Postings {
return index.EmptyPostings()
}
func (m mockMatcherIndex) Series(ref storage.SeriesRef, lset *labels.Labels, chks *[]chunks.Meta) error {
return nil
}
func (m mockMatcherIndex) LabelNames(...*labels.Matcher) ([]string, error) {
return []string{}, nil
}
func TestPostingsForMatcher(t *testing.T) {
cases := []struct {
matcher *labels.Matcher
hasError bool
}{
{
// Equal label matcher will just return.
matcher: labels.MustNewMatcher(labels.MatchEqual, "test", "test"),
hasError: false,
},
{
// Regex matcher which doesn't have '|' will call Labelvalues()
matcher: labels.MustNewMatcher(labels.MatchRegexp, "test", ".*"),
hasError: true,
},
{
matcher: labels.MustNewMatcher(labels.MatchRegexp, "test", "a|b"),
hasError: false,
},
{
// Test case for double quoted regex matcher
matcher: labels.MustNewMatcher(labels.MatchRegexp, "test", "^(?:a|b)$"),
hasError: true,
},
}
for _, tc := range cases {
ir := &mockMatcherIndex{}
_, err := postingsForMatcher(ir, tc.matcher)
if tc.hasError {
require.Error(t, err)
} else {
require.NoError(t, err)
}
}
}
func TestBlockBaseSeriesSet(t *testing.T) {
type refdSeries struct {
lset labels.Labels
chunks []chunks.Meta
ref storage.SeriesRef
}
cases := []struct {
series []refdSeries
// Postings should be in the sorted order of the series
postings []storage.SeriesRef
expIdxs []int
}{
{
series: []refdSeries{
{
lset: labels.New([]labels.Label{{Name: "a", Value: "a"}}...),
chunks: []chunks.Meta{
{Ref: 29},
{Ref: 45},
{Ref: 245},
{Ref: 123},
{Ref: 4232},
{Ref: 5344},
{Ref: 121},
},
ref: 12,
},
{
lset: labels.New([]labels.Label{{Name: "a", Value: "a"}, {Name: "b", Value: "b"}}...),
chunks: []chunks.Meta{
{Ref: 82}, {Ref: 23}, {Ref: 234}, {Ref: 65}, {Ref: 26},
},
ref: 10,
},
{
lset: labels.New([]labels.Label{{Name: "b", Value: "c"}}...),
chunks: []chunks.Meta{{Ref: 8282}},
ref: 1,
},
{
lset: labels.New([]labels.Label{{Name: "b", Value: "b"}}...),
chunks: []chunks.Meta{
{Ref: 829}, {Ref: 239}, {Ref: 2349}, {Ref: 659}, {Ref: 269},
},
ref: 108,
},
},
postings: []storage.SeriesRef{12, 13, 10, 108}, // 13 doesn't exist and should just be skipped over.
expIdxs: []int{0, 1, 3},
},
{
series: []refdSeries{
{
lset: labels.New([]labels.Label{{Name: "a", Value: "a"}, {Name: "b", Value: "b"}}...),
chunks: []chunks.Meta{
{Ref: 82}, {Ref: 23}, {Ref: 234}, {Ref: 65}, {Ref: 26},
},
ref: 10,
},
{
lset: labels.New([]labels.Label{{Name: "b", Value: "c"}}...),
chunks: []chunks.Meta{{Ref: 8282}},
ref: 3,
},
},
postings: []storage.SeriesRef{},
expIdxs: []int{},
},
}
for _, tc := range cases {
mi := newMockIndex()
for _, s := range tc.series {
require.NoError(t, mi.AddSeries(s.ref, s.lset, s.chunks...))
}
bcs := &blockBaseSeriesSet{
p: index.NewListPostings(tc.postings),
index: mi,
tombstones: tombstones.NewMemTombstones(),
}
i := 0
for bcs.Next() {
chks := bcs.currIterFn().chks
idx := tc.expIdxs[i]
require.Equal(t, tc.series[idx].lset, bcs.currLabels)
require.Equal(t, tc.series[idx].chunks, chks)
i++
}
require.Equal(t, len(tc.expIdxs), i)
require.NoError(t, bcs.Err())
}
}
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