mirror of
https://github.com/prometheus/prometheus.git
synced 2024-11-10 07:34:04 -08:00
702 lines
16 KiB
Go
702 lines
16 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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"math"
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"math/rand"
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"os"
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"sort"
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"testing"
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"time"
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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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// createTestHeadBlock creates a new head block with a SegmentWAL.
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func createTestHeadBlock(t testing.TB, dir string, mint, maxt int64) *HeadBlock {
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err := TouchHeadBlock(dir, 0, mint, maxt)
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require.NoError(t, err)
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return openTestHeadBlock(t, dir)
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}
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func openTestHeadBlock(t testing.TB, dir string) *HeadBlock {
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wal, err := OpenSegmentWAL(dir, nil, 5*time.Second)
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require.NoError(t, err)
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h, err := OpenHeadBlock(dir, nil, wal)
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require.NoError(t, err)
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return h
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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 := createTestHeadBlock(b, dir, 0, 1)
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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 TestAmendDatapointCausesError(t *testing.T) {
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dir, _ := ioutil.TempDir("", "test")
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defer os.RemoveAll(dir)
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hb := createTestHeadBlock(t, dir, 0, 1000)
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app := hb.Appender()
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_, err := app.Add(labels.Labels{}, 0, 0)
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require.NoError(t, err, "Failed to add sample")
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require.NoError(t, app.Commit(), "Unexpected error committing appender")
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app = hb.Appender()
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_, err = app.Add(labels.Labels{}, 0, 1)
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require.Equal(t, ErrAmendSample, err)
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}
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func TestDuplicateNaNDatapointNoAmendError(t *testing.T) {
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dir, _ := ioutil.TempDir("", "test")
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defer os.RemoveAll(dir)
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hb := createTestHeadBlock(t, dir, 0, 1000)
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app := hb.Appender()
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_, err := app.Add(labels.Labels{}, 0, math.NaN())
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require.NoError(t, err, "Failed to add sample")
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require.NoError(t, app.Commit(), "Unexpected error committing appender")
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app = hb.Appender()
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_, err = app.Add(labels.Labels{}, 0, math.NaN())
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require.NoError(t, err)
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}
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func TestNonDuplicateNaNDatapointsCausesAmendError(t *testing.T) {
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dir, _ := ioutil.TempDir("", "test")
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defer os.RemoveAll(dir)
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hb := createTestHeadBlock(t, dir, 0, 1000)
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app := hb.Appender()
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_, err := app.Add(labels.Labels{}, 0, math.Float64frombits(0x7ff0000000000001))
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require.NoError(t, err, "Failed to add sample")
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require.NoError(t, app.Commit(), "Unexpected error committing appender")
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app = hb.Appender()
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_, err = app.Add(labels.Labels{}, 0, math.Float64frombits(0x7ff0000000000002))
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require.Equal(t, ErrAmendSample, err)
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}
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func TestSkippingInvalidValuesInSameTxn(t *testing.T) {
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dir, _ := ioutil.TempDir("", "test")
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defer os.RemoveAll(dir)
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hb := createTestHeadBlock(t, dir, 0, 1000)
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// Append AmendedValue.
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app := hb.Appender()
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_, err := app.Add(labels.Labels{{"a", "b"}}, 0, 1)
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require.NoError(t, err)
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_, err = app.Add(labels.Labels{{"a", "b"}}, 0, 2)
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require.NoError(t, err)
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require.NoError(t, app.Commit())
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require.Equal(t, uint64(1), hb.Meta().Stats.NumSamples)
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// Make sure the right value is stored.
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q := hb.Querier(0, 10)
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ss := q.Select(labels.NewEqualMatcher("a", "b"))
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ssMap, err := readSeriesSet(ss)
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require.NoError(t, err)
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require.Equal(t, map[string][]sample{
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labels.New(labels.Label{"a", "b"}).String(): []sample{{0, 1}},
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}, ssMap)
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require.NoError(t, q.Close())
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// Append Out of Order Value.
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app = hb.Appender()
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_, err = app.Add(labels.Labels{{"a", "b"}}, 10, 3)
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require.NoError(t, err)
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_, err = app.Add(labels.Labels{{"a", "b"}}, 7, 5)
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require.NoError(t, err)
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require.NoError(t, app.Commit())
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require.Equal(t, uint64(2), hb.Meta().Stats.NumSamples)
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q = hb.Querier(0, 10)
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ss = q.Select(labels.NewEqualMatcher("a", "b"))
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ssMap, err = readSeriesSet(ss)
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require.NoError(t, err)
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require.Equal(t, map[string][]sample{
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labels.New(labels.Label{"a", "b"}).String(): []sample{{0, 1}, {10, 3}},
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}, ssMap)
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require.NoError(t, q.Close())
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}
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func TestHeadBlock_e2e(t *testing.T) {
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numDatapoints := 1000
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numRanges := 1000
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timeInterval := int64(3)
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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 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 := createTestHeadBlock(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.Error(t, ErrOutOfBounds, err)
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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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// Query each selector on 1000 random time-ranges.
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queries := []struct {
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ms []labels.Matcher
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}{
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{
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ms: []labels.Matcher{labels.NewEqualMatcher("a", "b")},
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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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},
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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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},
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// TODO: Add Regexp Matchers.
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}
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for _, qry := range queries {
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matched := labels.Slice{}
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for _, ls := range lbls {
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s := labels.Selector(qry.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(300)
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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(qry.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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// 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 TestDelete_simple(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 := createTestHeadBlock(t, dir, 0, 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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cases := []struct {
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dranges []trange
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remaint []int64
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}{
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{
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dranges: []trange{{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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dranges: []trange{{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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dranges: []trange{{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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dranges: []trange{{1, 3}, {4, 700}},
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remaint: []int64{0},
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},
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{
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dranges: []trange{{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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writeTombstoneFile(hb.dir, newEmptyTombstoneReader())
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hb.tombstones = newEmptyTombstoneReader()
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// Delete the ranges.
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for _, r := range c.dranges {
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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 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 := createTestHeadBlock(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{}
|
|
|
|
ts := rand.Int63n(300)
|
|
for i := 0; i < numDatapoints; i++ {
|
|
v := rand.Float64()
|
|
if ts >= minTime && ts <= maxTime {
|
|
series = append(series, sample{ts, v})
|
|
}
|
|
|
|
_, err := app.Add(ls, ts, v)
|
|
if ts >= minTime && ts <= maxTime {
|
|
require.NoError(t, err)
|
|
} else {
|
|
require.Error(t, ErrOutOfBounds, err)
|
|
}
|
|
|
|
ts += rand.Int63n(timeInterval) + 1
|
|
}
|
|
|
|
seriesMap[labels.New(l...).String()] = series
|
|
}
|
|
|
|
require.NoError(t, app.Commit())
|
|
|
|
// Delete a time-range from each-selector.
|
|
dels := []struct {
|
|
ms []labels.Matcher
|
|
drange []trange
|
|
}{
|
|
{
|
|
ms: []labels.Matcher{labels.NewEqualMatcher("a", "b")},
|
|
drange: []trange{{300, 500}, {600, 670}},
|
|
},
|
|
{
|
|
ms: []labels.Matcher{
|
|
labels.NewEqualMatcher("a", "b"),
|
|
labels.NewEqualMatcher("job", "prom-k8s"),
|
|
},
|
|
drange: []trange{{300, 500}, {100, 670}},
|
|
},
|
|
{
|
|
ms: []labels.Matcher{
|
|
labels.NewEqualMatcher("a", "c"),
|
|
labels.NewEqualMatcher("instance", "localhost:9090"),
|
|
labels.NewEqualMatcher("job", "prometheus"),
|
|
},
|
|
drange: []trange{{300, 400}, {100, 6700}},
|
|
},
|
|
// TODO: Add Regexp Matchers.
|
|
}
|
|
|
|
for _, del := range dels {
|
|
// Reset the deletes everytime.
|
|
writeTombstoneFile(hb.dir, newEmptyTombstoneReader())
|
|
hb.tombstones = newEmptyTombstoneReader()
|
|
|
|
for _, r := range del.drange {
|
|
require.NoError(t, hb.Delete(r.mint, r.maxt, del.ms...))
|
|
}
|
|
|
|
matched := labels.Slice{}
|
|
for _, ls := range lbls {
|
|
s := labels.Selector(del.ms)
|
|
if s.Matches(ls) {
|
|
matched = append(matched, ls)
|
|
}
|
|
}
|
|
|
|
sort.Sort(matched)
|
|
|
|
for i := 0; i < numRanges; i++ {
|
|
mint := rand.Int63n(200)
|
|
maxt := mint + rand.Int63n(timeInterval*int64(numDatapoints))
|
|
|
|
q := hb.Querier(mint, maxt)
|
|
ss := q.Select(del.ms...)
|
|
|
|
// Build the mockSeriesSet.
|
|
matchedSeries := make([]Series, 0, len(matched))
|
|
for _, m := range matched {
|
|
smpls := boundedSamples(seriesMap[m.String()], mint, maxt)
|
|
smpls = deletedSamples(smpls, del.drange)
|
|
|
|
// Only append those series for which samples exist as mockSeriesSet
|
|
// doesn't skip series with no samples.
|
|
// TODO: But sometimes SeriesSet returns an empty SeriesIterator
|
|
if len(smpls) > 0 {
|
|
matchedSeries = append(matchedSeries, newSeries(
|
|
m.Map(),
|
|
smpls,
|
|
))
|
|
}
|
|
}
|
|
expSs := newListSeriesSet(matchedSeries)
|
|
|
|
// Compare both SeriesSets.
|
|
for {
|
|
eok, rok := expSs.Next(), ss.Next()
|
|
|
|
// Skip a series if iterator is empty.
|
|
if rok {
|
|
for !ss.At().Iterator().Next() {
|
|
rok = ss.Next()
|
|
if !rok {
|
|
break
|
|
}
|
|
}
|
|
}
|
|
require.Equal(t, eok, rok, "next")
|
|
|
|
if !eok {
|
|
break
|
|
}
|
|
sexp := expSs.At()
|
|
sres := ss.At()
|
|
|
|
require.Equal(t, sexp.Labels(), sres.Labels(), "labels")
|
|
|
|
smplExp, errExp := expandSeriesIterator(sexp.Iterator())
|
|
smplRes, errRes := expandSeriesIterator(sres.Iterator())
|
|
|
|
require.Equal(t, errExp, errRes, "samples error")
|
|
require.Equal(t, smplExp, smplRes, "samples")
|
|
}
|
|
}
|
|
}
|
|
|
|
return
|
|
}
|
|
|
|
func boundedSamples(full []sample, mint, maxt int64) []sample {
|
|
for len(full) > 0 {
|
|
if full[0].t >= mint {
|
|
break
|
|
}
|
|
full = full[1:]
|
|
}
|
|
for i, s := range full {
|
|
// Terminate on the first sample larger than maxt.
|
|
if s.t > maxt {
|
|
return full[:i]
|
|
}
|
|
}
|
|
// maxt is after highest sample.
|
|
return full
|
|
}
|
|
|
|
func deletedSamples(full []sample, dranges []trange) []sample {
|
|
ds := make([]sample, 0, len(full))
|
|
Outer:
|
|
for _, s := range full {
|
|
for _, r := range dranges {
|
|
if r.inBounds(s.t) {
|
|
continue Outer
|
|
}
|
|
}
|
|
|
|
ds = append(ds, s)
|
|
}
|
|
|
|
return ds
|
|
}
|