mirror of
https://github.com/prometheus/prometheus.git
synced 2024-12-25 13:44:05 -08:00
510 lines
17 KiB
Go
510 lines
17 KiB
Go
// 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"
|
|
"encoding/binary"
|
|
"errors"
|
|
"fmt"
|
|
"hash/crc32"
|
|
"io/ioutil"
|
|
"math/rand"
|
|
"os"
|
|
"path/filepath"
|
|
"sort"
|
|
"strconv"
|
|
"testing"
|
|
|
|
"github.com/go-kit/kit/log"
|
|
"github.com/stretchr/testify/require"
|
|
|
|
"github.com/prometheus/prometheus/pkg/labels"
|
|
"github.com/prometheus/prometheus/storage"
|
|
"github.com/prometheus/prometheus/tsdb/chunks"
|
|
"github.com/prometheus/prometheus/tsdb/fileutil"
|
|
"github.com/prometheus/prometheus/tsdb/tsdbutil"
|
|
"github.com/prometheus/prometheus/tsdb/wal"
|
|
)
|
|
|
|
// In Prometheus 2.1.0 we had a bug where the meta.json version was falsely bumped
|
|
// to 2. We had a migration in place resetting it to 1 but we should move immediately to
|
|
// version 3 next time to avoid confusion and issues.
|
|
func TestBlockMetaMustNeverBeVersion2(t *testing.T) {
|
|
dir, err := ioutil.TempDir("", "metaversion")
|
|
require.NoError(t, err)
|
|
defer func() {
|
|
require.NoError(t, os.RemoveAll(dir))
|
|
}()
|
|
|
|
_, err = writeMetaFile(log.NewNopLogger(), dir, &BlockMeta{})
|
|
require.NoError(t, err)
|
|
|
|
meta, _, err := readMetaFile(dir)
|
|
require.NoError(t, err)
|
|
require.NotEqual(t, 2, meta.Version, "meta.json version must never be 2")
|
|
}
|
|
|
|
func TestSetCompactionFailed(t *testing.T) {
|
|
tmpdir, err := ioutil.TempDir("", "test")
|
|
require.NoError(t, err)
|
|
defer func() {
|
|
require.NoError(t, os.RemoveAll(tmpdir))
|
|
}()
|
|
|
|
blockDir := createBlock(t, tmpdir, genSeries(1, 1, 0, 1))
|
|
b, err := OpenBlock(nil, blockDir, nil)
|
|
require.NoError(t, err)
|
|
require.Equal(t, false, b.meta.Compaction.Failed)
|
|
require.NoError(t, b.setCompactionFailed())
|
|
require.Equal(t, true, b.meta.Compaction.Failed)
|
|
require.NoError(t, b.Close())
|
|
|
|
b, err = OpenBlock(nil, blockDir, nil)
|
|
require.NoError(t, err)
|
|
require.Equal(t, true, b.meta.Compaction.Failed)
|
|
require.NoError(t, b.Close())
|
|
}
|
|
|
|
func TestCreateBlock(t *testing.T) {
|
|
tmpdir, err := ioutil.TempDir("", "test")
|
|
require.NoError(t, err)
|
|
defer func() {
|
|
require.NoError(t, os.RemoveAll(tmpdir))
|
|
}()
|
|
b, err := OpenBlock(nil, createBlock(t, tmpdir, genSeries(1, 1, 0, 10)), nil)
|
|
if err == nil {
|
|
require.NoError(t, b.Close())
|
|
}
|
|
require.NoError(t, err)
|
|
}
|
|
|
|
func TestCorruptedChunk(t *testing.T) {
|
|
for _, tc := range []struct {
|
|
name string
|
|
corrFunc func(f *os.File) // Func that applies the corruption.
|
|
openErr error
|
|
iterErr error
|
|
}{
|
|
{
|
|
name: "invalid header size",
|
|
corrFunc: func(f *os.File) {
|
|
require.NoError(t, f.Truncate(1))
|
|
},
|
|
openErr: errors.New("invalid segment header in segment 0: invalid size"),
|
|
},
|
|
{
|
|
name: "invalid magic number",
|
|
corrFunc: func(f *os.File) {
|
|
magicChunksOffset := int64(0)
|
|
_, err := f.Seek(magicChunksOffset, 0)
|
|
require.NoError(t, err)
|
|
|
|
// Set invalid magic number.
|
|
b := make([]byte, chunks.MagicChunksSize)
|
|
binary.BigEndian.PutUint32(b[:chunks.MagicChunksSize], 0x00000000)
|
|
n, err := f.Write(b)
|
|
require.NoError(t, err)
|
|
require.Equal(t, chunks.MagicChunksSize, n)
|
|
},
|
|
openErr: errors.New("invalid magic number 0"),
|
|
},
|
|
{
|
|
name: "invalid chunk format version",
|
|
corrFunc: func(f *os.File) {
|
|
chunksFormatVersionOffset := int64(4)
|
|
_, err := f.Seek(chunksFormatVersionOffset, 0)
|
|
require.NoError(t, err)
|
|
|
|
// Set invalid chunk format version.
|
|
b := make([]byte, chunks.ChunksFormatVersionSize)
|
|
b[0] = 0
|
|
n, err := f.Write(b)
|
|
require.NoError(t, err)
|
|
require.Equal(t, chunks.ChunksFormatVersionSize, n)
|
|
},
|
|
openErr: errors.New("invalid chunk format version 0"),
|
|
},
|
|
{
|
|
name: "chunk not enough bytes to read the chunk length",
|
|
corrFunc: func(f *os.File) {
|
|
// Truncate one byte after the segment header.
|
|
require.NoError(t, f.Truncate(chunks.SegmentHeaderSize+1))
|
|
},
|
|
iterErr: errors.New("cannot populate chunk 8: segment doesn't include enough bytes to read the chunk size data field - required:13, available:9"),
|
|
},
|
|
{
|
|
name: "chunk not enough bytes to read the data",
|
|
corrFunc: func(f *os.File) {
|
|
fi, err := f.Stat()
|
|
require.NoError(t, err)
|
|
require.NoError(t, f.Truncate(fi.Size()-1))
|
|
},
|
|
iterErr: errors.New("cannot populate chunk 8: segment doesn't include enough bytes to read the chunk - required:26, available:25"),
|
|
},
|
|
{
|
|
name: "checksum mismatch",
|
|
corrFunc: func(f *os.File) {
|
|
fi, err := f.Stat()
|
|
require.NoError(t, err)
|
|
|
|
// Get the chunk data end offset.
|
|
chkEndOffset := int(fi.Size()) - crc32.Size
|
|
|
|
// Seek to the last byte of chunk data and modify it.
|
|
_, err = f.Seek(int64(chkEndOffset-1), 0)
|
|
require.NoError(t, err)
|
|
n, err := f.Write([]byte("x"))
|
|
require.NoError(t, err)
|
|
require.Equal(t, n, 1)
|
|
},
|
|
iterErr: errors.New("cannot populate chunk 8: checksum mismatch expected:cfc0526c, actual:34815eae"),
|
|
},
|
|
} {
|
|
t.Run(tc.name, func(t *testing.T) {
|
|
tmpdir, err := ioutil.TempDir("", "test_open_block_chunk_corrupted")
|
|
require.NoError(t, err)
|
|
defer func() {
|
|
require.NoError(t, os.RemoveAll(tmpdir))
|
|
}()
|
|
|
|
series := storage.NewListSeries(labels.FromStrings("a", "b"), []tsdbutil.Sample{sample{1, 1}})
|
|
blockDir := createBlock(t, tmpdir, []storage.Series{series})
|
|
files, err := sequenceFiles(chunkDir(blockDir))
|
|
require.NoError(t, err)
|
|
require.Greater(t, len(files), 0, "No chunk created.")
|
|
|
|
f, err := os.OpenFile(files[0], os.O_RDWR, 0666)
|
|
require.NoError(t, err)
|
|
|
|
// Apply corruption function.
|
|
tc.corrFunc(f)
|
|
require.NoError(t, f.Close())
|
|
|
|
// Check open err.
|
|
b, err := OpenBlock(nil, blockDir, nil)
|
|
if tc.openErr != nil {
|
|
require.Equal(t, tc.openErr.Error(), err.Error())
|
|
return
|
|
}
|
|
defer func() { require.NoError(t, b.Close()) }()
|
|
|
|
querier, err := NewBlockQuerier(b, 0, 1)
|
|
require.NoError(t, err)
|
|
defer func() { require.NoError(t, querier.Close()) }()
|
|
set := querier.Select(false, nil, labels.MustNewMatcher(labels.MatchEqual, "a", "b"))
|
|
|
|
// Check chunk errors during iter time.
|
|
require.True(t, set.Next())
|
|
it := set.At().Iterator()
|
|
require.Equal(t, false, it.Next())
|
|
require.Equal(t, tc.iterErr.Error(), it.Err().Error())
|
|
})
|
|
}
|
|
}
|
|
|
|
func TestLabelValuesWithMatchers(t *testing.T) {
|
|
tmpdir, err := ioutil.TempDir("", "test_block_label_values_with_matchers")
|
|
require.NoError(t, err)
|
|
defer func() {
|
|
require.NoError(t, os.RemoveAll(tmpdir))
|
|
}()
|
|
|
|
var seriesEntries []storage.Series
|
|
for i := 0; i < 100; i++ {
|
|
seriesEntries = append(seriesEntries, storage.NewListSeries(labels.Labels{
|
|
{Name: "unique", Value: fmt.Sprintf("value%d", i)},
|
|
{Name: "tens", Value: fmt.Sprintf("value%d", i/10)},
|
|
}, []tsdbutil.Sample{sample{100, 0}}))
|
|
}
|
|
|
|
blockDir := createBlock(t, tmpdir, seriesEntries)
|
|
files, err := sequenceFiles(chunkDir(blockDir))
|
|
require.NoError(t, err)
|
|
require.Greater(t, len(files), 0, "No chunk created.")
|
|
|
|
// Check open err.
|
|
block, err := OpenBlock(nil, blockDir, nil)
|
|
require.NoError(t, err)
|
|
defer func() { require.NoError(t, block.Close()) }()
|
|
|
|
indexReader, err := block.Index()
|
|
require.NoError(t, err)
|
|
defer func() { require.NoError(t, indexReader.Close()) }()
|
|
|
|
testCases := []struct {
|
|
name string
|
|
labelName string
|
|
matchers []*labels.Matcher
|
|
expectedValues []string
|
|
}{
|
|
{
|
|
name: "get tens based on unique id",
|
|
labelName: "tens",
|
|
matchers: []*labels.Matcher{labels.MustNewMatcher(labels.MatchEqual, "unique", "value35")},
|
|
expectedValues: []string{"value3"},
|
|
}, {
|
|
name: "get unique ids based on a ten",
|
|
labelName: "unique",
|
|
matchers: []*labels.Matcher{labels.MustNewMatcher(labels.MatchEqual, "tens", "value1")},
|
|
expectedValues: []string{"value10", "value11", "value12", "value13", "value14", "value15", "value16", "value17", "value18", "value19"},
|
|
}, {
|
|
name: "get tens by pattern matching on unique id",
|
|
labelName: "tens",
|
|
matchers: []*labels.Matcher{labels.MustNewMatcher(labels.MatchRegexp, "unique", "value[5-7]5")},
|
|
expectedValues: []string{"value5", "value6", "value7"},
|
|
}, {
|
|
name: "get tens by matching for absence of unique label",
|
|
labelName: "tens",
|
|
matchers: []*labels.Matcher{labels.MustNewMatcher(labels.MatchNotEqual, "unique", "")},
|
|
expectedValues: []string{"value0", "value1", "value2", "value3", "value4", "value5", "value6", "value7", "value8", "value9"},
|
|
},
|
|
}
|
|
|
|
for _, tt := range testCases {
|
|
t.Run(tt.name, func(t *testing.T) {
|
|
actualValues, err := indexReader.SortedLabelValues(tt.labelName, tt.matchers...)
|
|
require.NoError(t, err)
|
|
require.Equal(t, tt.expectedValues, actualValues)
|
|
|
|
actualValues, err = indexReader.LabelValues(tt.labelName, tt.matchers...)
|
|
sort.Strings(actualValues)
|
|
require.NoError(t, err)
|
|
require.Equal(t, tt.expectedValues, actualValues)
|
|
})
|
|
}
|
|
}
|
|
|
|
// TestBlockSize ensures that the block size is calculated correctly.
|
|
func TestBlockSize(t *testing.T) {
|
|
tmpdir, err := ioutil.TempDir("", "test_blockSize")
|
|
require.NoError(t, err)
|
|
defer func() {
|
|
require.NoError(t, os.RemoveAll(tmpdir))
|
|
}()
|
|
|
|
var (
|
|
blockInit *Block
|
|
expSizeInit int64
|
|
blockDirInit string
|
|
)
|
|
|
|
// Create a block and compare the reported size vs actual disk size.
|
|
{
|
|
blockDirInit = createBlock(t, tmpdir, genSeries(10, 1, 1, 100))
|
|
blockInit, err = OpenBlock(nil, blockDirInit, nil)
|
|
require.NoError(t, err)
|
|
defer func() {
|
|
require.NoError(t, blockInit.Close())
|
|
}()
|
|
expSizeInit = blockInit.Size()
|
|
actSizeInit, err := fileutil.DirSize(blockInit.Dir())
|
|
require.NoError(t, err)
|
|
require.Equal(t, expSizeInit, actSizeInit)
|
|
}
|
|
|
|
// Delete some series and check the sizes again.
|
|
{
|
|
require.NoError(t, blockInit.Delete(1, 10, labels.MustNewMatcher(labels.MatchRegexp, "", ".*")))
|
|
expAfterDelete := blockInit.Size()
|
|
require.Greater(t, expAfterDelete, expSizeInit, "after a delete the block size should be bigger as the tombstone file should grow %v > %v", expAfterDelete, expSizeInit)
|
|
actAfterDelete, err := fileutil.DirSize(blockDirInit)
|
|
require.NoError(t, err)
|
|
require.Equal(t, expAfterDelete, actAfterDelete, "after a delete reported block size doesn't match actual disk size")
|
|
|
|
c, err := NewLeveledCompactor(context.Background(), nil, log.NewNopLogger(), []int64{0}, nil, nil)
|
|
require.NoError(t, err)
|
|
blockDirAfterCompact, err := c.Compact(tmpdir, []string{blockInit.Dir()}, nil)
|
|
require.NoError(t, err)
|
|
blockAfterCompact, err := OpenBlock(nil, filepath.Join(tmpdir, blockDirAfterCompact.String()), nil)
|
|
require.NoError(t, err)
|
|
defer func() {
|
|
require.NoError(t, blockAfterCompact.Close())
|
|
}()
|
|
expAfterCompact := blockAfterCompact.Size()
|
|
actAfterCompact, err := fileutil.DirSize(blockAfterCompact.Dir())
|
|
require.NoError(t, err)
|
|
require.Greater(t, actAfterDelete, actAfterCompact, "after a delete and compaction the block size should be smaller %v,%v", actAfterDelete, actAfterCompact)
|
|
require.Equal(t, expAfterCompact, actAfterCompact, "after a delete and compaction reported block size doesn't match actual disk size")
|
|
}
|
|
}
|
|
|
|
func TestReadIndexFormatV1(t *testing.T) {
|
|
/* The block here was produced at the commit
|
|
706602daed1487f7849990678b4ece4599745905 used in 2.0.0 with:
|
|
db, _ := Open("v1db", nil, nil, nil)
|
|
app := db.Appender()
|
|
app.Add(labels.FromStrings("foo", "bar"), 1, 2)
|
|
app.Add(labels.FromStrings("foo", "baz"), 3, 4)
|
|
app.Add(labels.FromStrings("foo", "meh"), 1000*3600*4, 4) // Not in the block.
|
|
// Make sure we've enough values for the lack of sorting of postings offsets to show up.
|
|
for i := 0; i < 100; i++ {
|
|
app.Add(labels.FromStrings("bar", strconv.FormatInt(int64(i), 10)), 0, 0)
|
|
}
|
|
app.Commit()
|
|
db.compact()
|
|
db.Close()
|
|
*/
|
|
|
|
blockDir := filepath.Join("testdata", "index_format_v1")
|
|
block, err := OpenBlock(nil, blockDir, nil)
|
|
require.NoError(t, err)
|
|
|
|
q, err := NewBlockQuerier(block, 0, 1000)
|
|
require.NoError(t, err)
|
|
require.Equal(t, query(t, q, labels.MustNewMatcher(labels.MatchEqual, "foo", "bar")),
|
|
map[string][]tsdbutil.Sample{`{foo="bar"}`: {sample{t: 1, v: 2}}})
|
|
|
|
q, err = NewBlockQuerier(block, 0, 1000)
|
|
require.NoError(t, err)
|
|
require.Equal(t, query(t, q, labels.MustNewMatcher(labels.MatchNotRegexp, "foo", "^.?$")),
|
|
map[string][]tsdbutil.Sample{
|
|
`{foo="bar"}`: {sample{t: 1, v: 2}},
|
|
`{foo="baz"}`: {sample{t: 3, v: 4}},
|
|
})
|
|
}
|
|
|
|
func BenchmarkLabelValuesWithMatchers(b *testing.B) {
|
|
tmpdir, err := ioutil.TempDir("", "bench_block_label_values_with_matchers")
|
|
require.NoError(b, err)
|
|
defer func() {
|
|
require.NoError(b, os.RemoveAll(tmpdir))
|
|
}()
|
|
|
|
var seriesEntries []storage.Series
|
|
metricCount := 1000000
|
|
for i := 0; i < metricCount; i++ {
|
|
seriesEntries = append(seriesEntries, storage.NewListSeries(labels.Labels{
|
|
{Name: "unique", Value: fmt.Sprintf("value%d", i)},
|
|
{Name: "tens", Value: fmt.Sprintf("value%d", i/(metricCount/10))},
|
|
{Name: "ninety", Value: fmt.Sprintf("value%d", i/(metricCount/10)/9)}, // "0" for the first 90%, then "1"
|
|
}, []tsdbutil.Sample{sample{100, 0}}))
|
|
}
|
|
|
|
blockDir := createBlock(b, tmpdir, seriesEntries)
|
|
files, err := sequenceFiles(chunkDir(blockDir))
|
|
require.NoError(b, err)
|
|
require.Greater(b, len(files), 0, "No chunk created.")
|
|
|
|
// Check open err.
|
|
block, err := OpenBlock(nil, blockDir, nil)
|
|
require.NoError(b, err)
|
|
defer func() { require.NoError(b, block.Close()) }()
|
|
|
|
indexReader, err := block.Index()
|
|
require.NoError(b, err)
|
|
defer func() { require.NoError(b, indexReader.Close()) }()
|
|
|
|
matchers := []*labels.Matcher{labels.MustNewMatcher(labels.MatchEqual, "ninety", "value0")}
|
|
|
|
b.ResetTimer()
|
|
b.ReportAllocs()
|
|
|
|
for benchIdx := 0; benchIdx < b.N; benchIdx++ {
|
|
actualValues, err := indexReader.LabelValues("tens", matchers...)
|
|
require.NoError(b, err)
|
|
require.Equal(b, 9, len(actualValues))
|
|
}
|
|
}
|
|
|
|
// createBlock creates a block with given set of series and returns its dir.
|
|
func createBlock(tb testing.TB, dir string, series []storage.Series) string {
|
|
blockDir, err := CreateBlock(series, dir, 0, log.NewNopLogger())
|
|
require.NoError(tb, err)
|
|
return blockDir
|
|
}
|
|
|
|
func createBlockFromHead(tb testing.TB, dir string, head *Head) string {
|
|
compactor, err := NewLeveledCompactor(context.Background(), nil, log.NewNopLogger(), []int64{1000000}, nil, nil)
|
|
require.NoError(tb, err)
|
|
|
|
require.NoError(tb, os.MkdirAll(dir, 0777))
|
|
|
|
// Add +1 millisecond to block maxt because block intervals are half-open: [b.MinTime, b.MaxTime).
|
|
// Because of this block intervals are always +1 than the total samples it includes.
|
|
ulid, err := compactor.Write(dir, head, head.MinTime(), head.MaxTime()+1, nil)
|
|
require.NoError(tb, err)
|
|
return filepath.Join(dir, ulid.String())
|
|
}
|
|
|
|
func createHead(tb testing.TB, w *wal.WAL, series []storage.Series, chunkDir string) *Head {
|
|
opts := DefaultHeadOptions()
|
|
opts.ChunkDirRoot = chunkDir
|
|
head, err := NewHead(nil, nil, w, opts)
|
|
require.NoError(tb, err)
|
|
|
|
app := head.Appender(context.Background())
|
|
for _, s := range series {
|
|
ref := uint64(0)
|
|
it := s.Iterator()
|
|
lset := s.Labels()
|
|
for it.Next() {
|
|
t, v := it.At()
|
|
ref, err = app.Append(ref, lset, t, v)
|
|
require.NoError(tb, err)
|
|
}
|
|
require.NoError(tb, it.Err())
|
|
}
|
|
require.NoError(tb, app.Commit())
|
|
return head
|
|
}
|
|
|
|
const (
|
|
defaultLabelName = "labelName"
|
|
defaultLabelValue = "labelValue"
|
|
)
|
|
|
|
// genSeries generates series with a given number of labels and values.
|
|
func genSeries(totalSeries, labelCount int, mint, maxt int64) []storage.Series {
|
|
if totalSeries == 0 || labelCount == 0 {
|
|
return nil
|
|
}
|
|
|
|
series := make([]storage.Series, totalSeries)
|
|
|
|
for i := 0; i < totalSeries; i++ {
|
|
lbls := make(map[string]string, labelCount)
|
|
lbls[defaultLabelName] = strconv.Itoa(i)
|
|
for j := 1; len(lbls) < labelCount; j++ {
|
|
lbls[defaultLabelName+strconv.Itoa(j)] = defaultLabelValue + strconv.Itoa(j)
|
|
}
|
|
samples := make([]tsdbutil.Sample, 0, maxt-mint+1)
|
|
for t := mint; t < maxt; t++ {
|
|
samples = append(samples, sample{t: t, v: rand.Float64()})
|
|
}
|
|
series[i] = storage.NewListSeries(labels.FromMap(lbls), samples)
|
|
}
|
|
return series
|
|
}
|
|
|
|
// populateSeries generates series from given labels, mint and maxt.
|
|
func populateSeries(lbls []map[string]string, mint, maxt int64) []storage.Series {
|
|
if len(lbls) == 0 {
|
|
return nil
|
|
}
|
|
|
|
series := make([]storage.Series, 0, len(lbls))
|
|
for _, lbl := range lbls {
|
|
if len(lbl) == 0 {
|
|
continue
|
|
}
|
|
samples := make([]tsdbutil.Sample, 0, maxt-mint+1)
|
|
for t := mint; t <= maxt; t++ {
|
|
samples = append(samples, sample{t: t, v: rand.Float64()})
|
|
}
|
|
series = append(series, storage.NewListSeries(labels.FromMap(lbl), samples))
|
|
}
|
|
return series
|
|
}
|