480 lines
11 KiB
Go
480 lines
11 KiB
Go
// Copyright 2017 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 tsdb
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import (
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"io/ioutil"
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"os"
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"testing"
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"unsafe"
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"github.com/pkg/errors"
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"github.com/prometheus/tsdb/labels"
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promlabels "github.com/prometheus/prometheus/pkg/labels"
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"github.com/prometheus/prometheus/pkg/textparse"
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"github.com/stretchr/testify/require"
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)
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func BenchmarkCreateSeries(b *testing.B) {
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lbls, err := readPrometheusLabels("cmd/tsdb/testdata.1m", 1e6)
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require.NoError(b, err)
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b.Run("", func(b *testing.B) {
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dir, err := ioutil.TempDir("", "create_series_bench")
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require.NoError(b, err)
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defer os.RemoveAll(dir)
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h, err := NewHead(nil, nil, 10000)
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if err != nil {
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require.NoError(b, err)
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}
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b.ReportAllocs()
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b.ResetTimer()
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for _, l := range lbls[:b.N] {
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h.create(l.Hash(), l)
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}
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})
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}
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func readPrometheusLabels(fn string, n int) ([]labels.Labels, error) {
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f, err := os.Open(fn)
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if err != nil {
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return nil, err
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}
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defer f.Close()
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b, err := ioutil.ReadAll(f)
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if err != nil {
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return nil, err
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}
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p := textparse.New(b)
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i := 0
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var mets []labels.Labels
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hashes := map[uint64]struct{}{}
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for p.Next() && i < n {
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m := make(labels.Labels, 0, 10)
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p.Metric((*promlabels.Labels)(unsafe.Pointer(&m)))
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h := m.Hash()
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if _, ok := hashes[h]; ok {
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continue
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}
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mets = append(mets, m)
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hashes[h] = struct{}{}
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i++
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}
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if err := p.Err(); err != nil {
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return nil, err
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}
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if i != n {
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return mets, errors.Errorf("requested %d metrics but found %d", n, i)
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}
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return mets, nil
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}
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// func TestHBDeleteSimple(t *testing.T) {
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// numSamples := int64(10)
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// hb, close := openTestDB(t, nil)
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// defer close()
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// app := hb.Appender()
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// smpls := make([]float64, numSamples)
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// for i := int64(0); i < numSamples; i++ {
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// smpls[i] = rand.Float64()
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// app.Add(labels.Labels{{"a", "b"}}, i, smpls[i])
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// }
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// require.NoError(t, app.Commit())
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// cases := []struct {
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// intervals Intervals
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// remaint []int64
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// }{
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// {
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// intervals: Intervals{{0, 3}},
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// remaint: []int64{4, 5, 6, 7, 8, 9},
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// },
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// {
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// intervals: Intervals{{1, 3}},
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// remaint: []int64{0, 4, 5, 6, 7, 8, 9},
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// },
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// {
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// intervals: Intervals{{1, 3}, {4, 7}},
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// remaint: []int64{0, 8, 9},
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// },
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// {
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// intervals: Intervals{{1, 3}, {4, 700}},
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// remaint: []int64{0},
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// },
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// {
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// intervals: Intervals{{0, 9}},
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// remaint: []int64{},
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// },
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// }
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// Outer:
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// for _, c := range cases {
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// // Reset the tombstones.
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// hb.tombstones = newEmptyTombstoneReader()
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// // Delete the ranges.
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// for _, r := range c.intervals {
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// require.NoError(t, hb.Delete(r.Mint, r.Maxt, labels.NewEqualMatcher("a", "b")))
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// }
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// // Compare the result.
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// q := hb.Querier(0, numSamples)
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// res := q.Select(labels.NewEqualMatcher("a", "b"))
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// expSamples := make([]sample, 0, len(c.remaint))
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// for _, ts := range c.remaint {
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// expSamples = append(expSamples, sample{ts, smpls[ts]})
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// }
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// expss := newListSeriesSet([]Series{
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// newSeries(map[string]string{"a": "b"}, expSamples),
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// })
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// if len(expSamples) == 0 {
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// require.False(t, res.Next())
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// continue
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// }
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// for {
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// eok, rok := expss.Next(), res.Next()
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// require.Equal(t, eok, rok, "next")
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// if !eok {
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// continue Outer
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// }
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// sexp := expss.At()
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// sres := res.At()
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// require.Equal(t, sexp.Labels(), sres.Labels(), "labels")
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// smplExp, errExp := expandSeriesIterator(sexp.Iterator())
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// smplRes, errRes := expandSeriesIterator(sres.Iterator())
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// require.Equal(t, errExp, errRes, "samples error")
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// require.Equal(t, smplExp, smplRes, "samples")
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// }
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// }
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// }
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// func TestDeleteUntilCurMax(t *testing.T) {
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// numSamples := int64(10)
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// dir, _ := ioutil.TempDir("", "test")
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// defer os.RemoveAll(dir)
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// hb := createTestHead(t, dir, 0, 2*numSamples)
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// app := hb.Appender()
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// smpls := make([]float64, numSamples)
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// for i := int64(0); i < numSamples; i++ {
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// smpls[i] = rand.Float64()
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// app.Add(labels.Labels{{"a", "b"}}, i, smpls[i])
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// }
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// require.NoError(t, app.Commit())
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// require.NoError(t, hb.Delete(0, 10000, labels.NewEqualMatcher("a", "b")))
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// app = hb.Appender()
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// _, err := app.Add(labels.Labels{{"a", "b"}}, 11, 1)
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// require.NoError(t, err)
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// require.NoError(t, app.Commit())
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// q := hb.Querier(0, 100000)
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// res := q.Select(labels.NewEqualMatcher("a", "b"))
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// require.True(t, res.Next())
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// exps := res.At()
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// it := exps.Iterator()
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// ressmpls, err := expandSeriesIterator(it)
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// require.NoError(t, err)
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// require.Equal(t, []sample{{11, 1}}, ressmpls)
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// }
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// func TestDelete_e2e(t *testing.T) {
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// numDatapoints := 1000
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// numRanges := 1000
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// timeInterval := int64(2)
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// maxTime := int64(2 * 1000)
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// minTime := int64(200)
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// // Create 8 series with 1000 data-points of different ranges, delete and run queries.
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// lbls := [][]labels.Label{
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// {
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// {"a", "b"},
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// {"instance", "localhost:9090"},
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// {"job", "prometheus"},
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// },
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// {
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// {"a", "b"},
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// {"instance", "127.0.0.1:9090"},
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// {"job", "prometheus"},
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// },
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// {
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// {"a", "b"},
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// {"instance", "127.0.0.1:9090"},
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// {"job", "prom-k8s"},
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// },
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// {
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// {"a", "b"},
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// {"instance", "localhost:9090"},
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// {"job", "prom-k8s"},
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// },
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// {
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// {"a", "c"},
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// {"instance", "localhost:9090"},
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// {"job", "prometheus"},
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// },
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// {
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// {"a", "c"},
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// {"instance", "127.0.0.1:9090"},
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// {"job", "prometheus"},
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// },
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// {
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// {"a", "c"},
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// {"instance", "127.0.0.1:9090"},
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// {"job", "prom-k8s"},
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// },
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// {
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// {"a", "c"},
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// {"instance", "localhost:9090"},
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// {"job", "prom-k8s"},
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// },
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// }
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// seriesMap := map[string][]sample{}
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// for _, l := range lbls {
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// seriesMap[labels.New(l...).String()] = []sample{}
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// }
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// dir, _ := ioutil.TempDir("", "test")
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// defer os.RemoveAll(dir)
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// hb := createTestHead(t, dir, minTime, maxTime)
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// app := hb.Appender()
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// for _, l := range lbls {
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// ls := labels.New(l...)
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// series := []sample{}
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// ts := rand.Int63n(300)
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// for i := 0; i < numDatapoints; i++ {
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// v := rand.Float64()
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// if ts >= minTime && ts <= maxTime {
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// series = append(series, sample{ts, v})
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// }
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// _, err := app.Add(ls, ts, v)
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// if ts >= minTime && ts <= maxTime {
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// require.NoError(t, err)
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// } else {
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// require.EqualError(t, err, ErrOutOfBounds.Error())
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// }
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// ts += rand.Int63n(timeInterval) + 1
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// }
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// seriesMap[labels.New(l...).String()] = series
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// }
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// require.NoError(t, app.Commit())
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// // Delete a time-range from each-selector.
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// dels := []struct {
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// ms []labels.Matcher
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// drange Intervals
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// }{
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// {
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// ms: []labels.Matcher{labels.NewEqualMatcher("a", "b")},
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// drange: Intervals{{300, 500}, {600, 670}},
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// },
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// {
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// ms: []labels.Matcher{
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// labels.NewEqualMatcher("a", "b"),
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// labels.NewEqualMatcher("job", "prom-k8s"),
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// },
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// drange: Intervals{{300, 500}, {100, 670}},
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// },
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// {
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// ms: []labels.Matcher{
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// labels.NewEqualMatcher("a", "c"),
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// labels.NewEqualMatcher("instance", "localhost:9090"),
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// labels.NewEqualMatcher("job", "prometheus"),
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// },
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// drange: Intervals{{300, 400}, {100, 6700}},
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// },
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// // TODO: Add Regexp Matchers.
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// }
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// for _, del := range dels {
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// // Reset the deletes everytime.
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// writeTombstoneFile(hb.dir, newEmptyTombstoneReader())
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// hb.tombstones = newEmptyTombstoneReader()
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// for _, r := range del.drange {
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// require.NoError(t, hb.Delete(r.Mint, r.Maxt, del.ms...))
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// }
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// matched := labels.Slice{}
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// for _, ls := range lbls {
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// s := labels.Selector(del.ms)
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// if s.Matches(ls) {
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// matched = append(matched, ls)
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// }
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// }
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// sort.Sort(matched)
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// for i := 0; i < numRanges; i++ {
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// mint := rand.Int63n(200)
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// maxt := mint + rand.Int63n(timeInterval*int64(numDatapoints))
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// q := hb.Querier(mint, maxt)
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// ss := q.Select(del.ms...)
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// // Build the mockSeriesSet.
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// matchedSeries := make([]Series, 0, len(matched))
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// for _, m := range matched {
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// smpls := boundedSamples(seriesMap[m.String()], mint, maxt)
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// smpls = deletedSamples(smpls, del.drange)
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// // Only append those series for which samples exist as mockSeriesSet
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// // doesn't skip series with no samples.
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// // TODO: But sometimes SeriesSet returns an empty SeriesIterator
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// if len(smpls) > 0 {
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// matchedSeries = append(matchedSeries, newSeries(
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// m.Map(),
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// smpls,
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// ))
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// }
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// }
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// expSs := newListSeriesSet(matchedSeries)
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// // Compare both SeriesSets.
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// for {
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// eok, rok := expSs.Next(), ss.Next()
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// // Skip a series if iterator is empty.
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// if rok {
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// for !ss.At().Iterator().Next() {
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// rok = ss.Next()
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// if !rok {
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// break
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// }
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// }
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// }
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// require.Equal(t, eok, rok, "next")
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// if !eok {
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// break
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// }
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// sexp := expSs.At()
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// sres := ss.At()
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// require.Equal(t, sexp.Labels(), sres.Labels(), "labels")
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// smplExp, errExp := expandSeriesIterator(sexp.Iterator())
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// smplRes, errRes := expandSeriesIterator(sres.Iterator())
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// require.Equal(t, errExp, errRes, "samples error")
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// require.Equal(t, smplExp, smplRes, "samples")
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// }
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// }
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// }
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// return
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// }
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func boundedSamples(full []sample, mint, maxt int64) []sample {
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for len(full) > 0 {
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if full[0].t >= mint {
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break
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}
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full = full[1:]
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}
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for i, s := range full {
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// Terminate on the first sample larger than maxt.
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if s.t > maxt {
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return full[:i]
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}
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}
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// maxt is after highest sample.
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return full
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}
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func deletedSamples(full []sample, dranges Intervals) []sample {
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ds := make([]sample, 0, len(full))
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Outer:
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for _, s := range full {
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for _, r := range dranges {
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if r.inBounds(s.t) {
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continue Outer
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}
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}
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ds = append(ds, s)
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}
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return ds
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}
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func TestComputeChunkEndTime(t *testing.T) {
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cases := []struct {
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start, cur, max int64
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res int64
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}{
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{
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start: 0,
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cur: 250,
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max: 1000,
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res: 1000,
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},
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{
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start: 100,
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cur: 200,
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max: 1000,
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res: 550,
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},
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// Case where we fit floored 0 chunks. Must catch division by 0
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// and default to maximum time.
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{
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start: 0,
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cur: 500,
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max: 1000,
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res: 1000,
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},
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// Catch divison by zero for cur == start. Strictly not a possible case.
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{
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start: 100,
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cur: 100,
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max: 1000,
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res: 104,
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},
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}
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for _, c := range cases {
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got := computeChunkEndTime(c.start, c.cur, c.max)
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if got != c.res {
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t.Errorf("expected %d for (start: %d, cur: %d, max: %d), got %d", c.res, c.start, c.cur, c.max, got)
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}
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}
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}
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