mirror of
https://github.com/VictoriaMetrics/VictoriaMetrics.git
synced 2024-11-21 14:44:00 +00:00
343 lines
11 KiB
Go
343 lines
11 KiB
Go
package logstorage
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import (
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"fmt"
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"math"
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"math/rand"
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"reflect"
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"sort"
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"testing"
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"github.com/VictoriaMetrics/VictoriaMetrics/lib/logger"
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)
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func TestInmemoryPartMustInitFromRows(t *testing.T) {
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f := func(lr *LogRows, blocksCountExpected int, compressionRateExpected float64) {
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t.Helper()
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uncompressedSizeBytesExpected := uncompressedRowsSizeBytes(lr.rows)
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rowsCountExpected := len(lr.timestamps)
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minTimestampExpected := int64(math.MaxInt64)
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maxTimestampExpected := int64(math.MinInt64)
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// make a copy of lr - it is used for comapring the results later,
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// since lr may be modified by inmemoryPart.mustInitFromRows()
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lrOrig := GetLogRows(nil, nil)
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for i, timestamp := range lr.timestamps {
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if timestamp < minTimestampExpected {
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minTimestampExpected = timestamp
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}
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if timestamp > maxTimestampExpected {
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maxTimestampExpected = timestamp
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}
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lrOrig.mustAddInternal(lr.streamIDs[i], timestamp, lr.rows[i], lr.streamTagsCanonicals[i])
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}
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// Create inmemory part from lr
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mp := getInmemoryPart()
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mp.mustInitFromRows(lr)
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// Check mp.ph
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ph := &mp.ph
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checkCompressionRate(t, ph, compressionRateExpected)
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if ph.UncompressedSizeBytes != uncompressedSizeBytesExpected {
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t.Fatalf("unexpected UncompressedSizeBytes in partHeader; got %d; want %d", ph.UncompressedSizeBytes, uncompressedSizeBytesExpected)
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}
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if ph.RowsCount != uint64(rowsCountExpected) {
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t.Fatalf("unexpected rowsCount in partHeader; got %d; want %d", ph.RowsCount, rowsCountExpected)
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}
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if ph.BlocksCount != uint64(blocksCountExpected) {
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t.Fatalf("unexpected blocksCount in partHeader; got %d; want %d", ph.BlocksCount, blocksCountExpected)
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}
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if ph.RowsCount > 0 {
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if ph.MinTimestamp != minTimestampExpected {
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t.Fatalf("unexpected minTimestamp in partHeader; got %d; want %d", ph.MinTimestamp, minTimestampExpected)
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}
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if ph.MaxTimestamp != maxTimestampExpected {
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t.Fatalf("unexpected maxTimestamp in partHeader; got %d; want %d", ph.MaxTimestamp, maxTimestampExpected)
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}
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}
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// Read log entries from mp to rrsResult
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sbu := getStringsBlockUnmarshaler()
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defer putStringsBlockUnmarshaler(sbu)
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vd := getValuesDecoder()
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defer putValuesDecoder(vd)
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lrResult := mp.readLogRows(sbu, vd)
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putInmemoryPart(mp)
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// compare lrOrig to lrResult
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if err := checkEqualRows(lrResult, lrOrig); err != nil {
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t.Fatalf("unequal log entries: %s", err)
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}
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}
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f(GetLogRows(nil, nil), 0, 0)
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// Check how inmemoryPart works with a single stream
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f(newTestLogRows(1, 1, 0), 1, 0.8)
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f(newTestLogRows(1, 2, 0), 1, 0.9)
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f(newTestLogRows(1, 10, 0), 1, 2.0)
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f(newTestLogRows(1, 1000, 0), 1, 7.1)
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f(newTestLogRows(1, 20000, 0), 2, 7.2)
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// Check how inmemoryPart works with multiple streams
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f(newTestLogRows(2, 1, 0), 2, 0.8)
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f(newTestLogRows(10, 1, 0), 10, 0.9)
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f(newTestLogRows(100, 1, 0), 100, 1.0)
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f(newTestLogRows(10, 5, 0), 10, 1.4)
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f(newTestLogRows(10, 1000, 0), 10, 7.2)
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f(newTestLogRows(100, 100, 0), 100, 5.0)
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}
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func checkCompressionRate(t *testing.T, ph *partHeader, compressionRateExpected float64) {
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t.Helper()
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compressionRate := float64(ph.UncompressedSizeBytes) / float64(ph.CompressedSizeBytes)
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if math.Abs(compressionRate-compressionRateExpected) > math.Abs(compressionRate+compressionRateExpected)*0.05 {
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t.Fatalf("unexpected compression rate; got %.1f; want %.1f", compressionRate, compressionRateExpected)
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}
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}
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func TestInmemoryPartInitFromBlockStreamReaders(t *testing.T) {
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f := func(lrs []*LogRows, blocksCountExpected int, compressionRateExpected float64) {
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t.Helper()
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uncompressedSizeBytesExpected := uint64(0)
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rowsCountExpected := 0
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minTimestampExpected := int64(math.MaxInt64)
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maxTimestampExpected := int64(math.MinInt64)
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// make a copy of rrss in order to compare the results after merge.
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lrOrig := GetLogRows(nil, nil)
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for _, lr := range lrs {
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uncompressedSizeBytesExpected += uncompressedRowsSizeBytes(lr.rows)
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rowsCountExpected += len(lr.timestamps)
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for j, timestamp := range lr.timestamps {
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if timestamp < minTimestampExpected {
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minTimestampExpected = timestamp
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}
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if timestamp > maxTimestampExpected {
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maxTimestampExpected = timestamp
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}
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lrOrig.mustAddInternal(lr.streamIDs[j], timestamp, lr.rows[j], lr.streamTagsCanonicals[j])
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}
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}
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// Initialize readers from lrs
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var mpsSrc []*inmemoryPart
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var bsrs []*blockStreamReader
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for _, lr := range lrs {
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mp := getInmemoryPart()
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mp.mustInitFromRows(lr)
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mpsSrc = append(mpsSrc, mp)
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bsr := getBlockStreamReader()
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bsr.MustInitFromInmemoryPart(mp)
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bsrs = append(bsrs, bsr)
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}
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defer func() {
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for _, bsr := range bsrs {
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putBlockStreamReader(bsr)
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}
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for _, mp := range mpsSrc {
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putInmemoryPart(mp)
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}
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}()
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// Merge data from bsrs into mpDst
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mpDst := getInmemoryPart()
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bsw := getBlockStreamWriter()
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bsw.MustInitForInmemoryPart(mpDst)
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mustMergeBlockStreams(&mpDst.ph, bsw, bsrs, nil)
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putBlockStreamWriter(bsw)
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// Check mpDst.ph stats
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ph := &mpDst.ph
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checkCompressionRate(t, ph, compressionRateExpected)
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if ph.UncompressedSizeBytes != uncompressedSizeBytesExpected {
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t.Fatalf("unexpected uncompressedSizeBytes in partHeader; got %d; want %d", ph.UncompressedSizeBytes, uncompressedSizeBytesExpected)
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}
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if ph.RowsCount != uint64(rowsCountExpected) {
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t.Fatalf("unexpected number of entries in partHeader; got %d; want %d", ph.RowsCount, rowsCountExpected)
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}
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if ph.BlocksCount != uint64(blocksCountExpected) {
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t.Fatalf("unexpected blocksCount in partHeader; got %d; want %d", ph.BlocksCount, blocksCountExpected)
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}
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if ph.RowsCount > 0 {
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if ph.MinTimestamp != minTimestampExpected {
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t.Fatalf("unexpected minTimestamp in partHeader; got %d; want %d", ph.MinTimestamp, minTimestampExpected)
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}
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if ph.MaxTimestamp != maxTimestampExpected {
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t.Fatalf("unexpected maxTimestamp in partHeader; got %d; want %d", ph.MaxTimestamp, maxTimestampExpected)
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}
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}
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// Read log entries from mpDst to rrsResult
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sbu := getStringsBlockUnmarshaler()
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defer putStringsBlockUnmarshaler(sbu)
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vd := getValuesDecoder()
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defer putValuesDecoder(vd)
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lrResult := mpDst.readLogRows(sbu, vd)
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putInmemoryPart(mpDst)
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// compare rrsOrig to rrsResult
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if err := checkEqualRows(lrResult, lrOrig); err != nil {
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t.Fatalf("unequal log entries: %s", err)
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}
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}
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// Check empty readers
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f(nil, 0, 0)
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f([]*LogRows{GetLogRows(nil, nil)}, 0, 0)
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f([]*LogRows{GetLogRows(nil, nil), GetLogRows(nil, nil)}, 0, 0)
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// Check merge with a single reader
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f([]*LogRows{newTestLogRows(1, 1, 0)}, 1, 0.8)
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f([]*LogRows{newTestLogRows(1, 10, 0)}, 1, 2.0)
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f([]*LogRows{newTestLogRows(1, 100, 0)}, 1, 4.9)
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f([]*LogRows{newTestLogRows(1, 1000, 0)}, 1, 7.1)
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f([]*LogRows{newTestLogRows(1, 10000, 0)}, 1, 7.4)
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f([]*LogRows{newTestLogRows(10, 1, 0)}, 10, 0.9)
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f([]*LogRows{newTestLogRows(100, 1, 0)}, 100, 1.0)
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f([]*LogRows{newTestLogRows(1000, 1, 0)}, 1000, 1.0)
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f([]*LogRows{newTestLogRows(10, 10, 0)}, 10, 2.1)
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f([]*LogRows{newTestLogRows(10, 100, 0)}, 10, 4.9)
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//Check merge with multiple readers
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f([]*LogRows{
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newTestLogRows(1, 1, 0),
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newTestLogRows(1, 1, 1),
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}, 2, 0.9)
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f([]*LogRows{
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newTestLogRows(2, 2, 0),
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newTestLogRows(2, 2, 0),
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}, 2, 1.8)
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f([]*LogRows{
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newTestLogRows(1, 20, 0),
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newTestLogRows(1, 10, 1),
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newTestLogRows(1, 5, 2),
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}, 3, 2.2)
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f([]*LogRows{
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newTestLogRows(10, 20, 0),
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newTestLogRows(20, 10, 1),
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newTestLogRows(30, 5, 2),
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}, 60, 2.0)
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f([]*LogRows{
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newTestLogRows(10, 20, 0),
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newTestLogRows(20, 10, 1),
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newTestLogRows(30, 5, 2),
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newTestLogRows(20, 7, 3),
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newTestLogRows(10, 9, 4),
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}, 90, 1.9)
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}
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func newTestLogRows(streams, rowsPerStream int, seed int64) *LogRows {
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streamTags := []string{
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"some-stream-tag",
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}
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lr := GetLogRows(streamTags, nil)
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rng := rand.New(rand.NewSource(seed))
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var fields []Field
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for i := 0; i < streams; i++ {
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tenantID := TenantID{
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AccountID: rng.Uint32(),
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ProjectID: rng.Uint32(),
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}
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for j := 0; j < rowsPerStream; j++ {
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// Add stream tags
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fields = append(fields[:0], Field{
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Name: "some-stream-tag",
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Value: fmt.Sprintf("some-stream-value-%d", i),
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})
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// Add the remaining tags
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for k := 0; k < 5; k++ {
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if rng.Float64() < 0.5 {
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fields = append(fields, Field{
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Name: fmt.Sprintf("field_%d", k),
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Value: fmt.Sprintf("value_%d_%d_%d", i, j, k),
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})
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}
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}
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// add a message field
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fields = append(fields, Field{
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Name: "",
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Value: fmt.Sprintf("some row number %d at stream %d", j, i),
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})
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// add a field with constant value
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fields = append(fields, Field{
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Name: "job",
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Value: "foobar",
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})
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// add a field with uint value
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fields = append(fields, Field{
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Name: "response_size_bytes",
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Value: fmt.Sprintf("%d", rng.Intn(1234)),
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})
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// shuffle fields in order to check de-shuffling algorithm
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rng.Shuffle(len(fields), func(i, j int) {
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fields[i], fields[j] = fields[j], fields[i]
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})
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timestamp := rng.Int63()
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lr.MustAdd(tenantID, timestamp, fields)
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}
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}
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return lr
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}
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func checkEqualRows(lrResult, lrOrig *LogRows) error {
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if len(lrResult.timestamps) != len(lrOrig.timestamps) {
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return fmt.Errorf("unexpected length LogRows; got %d; want %d", len(lrResult.timestamps), len(lrOrig.timestamps))
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}
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sort.Sort(lrResult)
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sort.Sort(lrOrig)
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sortFieldNames := func(fields []Field) {
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sort.Slice(fields, func(i, j int) bool {
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return fields[i].Name < fields[j].Name
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})
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}
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for i := range lrOrig.timestamps {
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if !lrOrig.streamIDs[i].equal(&lrResult.streamIDs[i]) {
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return fmt.Errorf("unexpected streamID for log entry %d\ngot\n%s\nwant\n%s", i, &lrResult.streamIDs[i], &lrOrig.streamIDs[i])
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}
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if lrOrig.timestamps[i] != lrResult.timestamps[i] {
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return fmt.Errorf("unexpected timestamp for log entry %d\ngot\n%d\nwant\n%d", i, lrResult.timestamps[i], lrOrig.timestamps[i])
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}
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fieldsOrig := lrOrig.rows[i]
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fieldsResult := lrResult.rows[i]
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if len(fieldsOrig) != len(fieldsResult) {
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return fmt.Errorf("unexpected number of fields at log entry %d\ngot\n%s\nwant\n%s", i, fieldsResult, fieldsOrig)
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}
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sortFieldNames(fieldsOrig)
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sortFieldNames(fieldsResult)
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if !reflect.DeepEqual(fieldsOrig, fieldsResult) {
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return fmt.Errorf("unexpected fields for log entry %d\ngot\n%s\nwant\n%s", i, fieldsResult, fieldsOrig)
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}
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}
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return nil
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}
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// readLogRows reads log entries from mp.
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//
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// This function is for testing and debugging purposes only.
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func (mp *inmemoryPart) readLogRows(sbu *stringsBlockUnmarshaler, vd *valuesDecoder) *LogRows {
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lr := GetLogRows(nil, nil)
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bsr := getBlockStreamReader()
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defer putBlockStreamReader(bsr)
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bsr.MustInitFromInmemoryPart(mp)
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var tmp rows
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for bsr.NextBlock() {
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bd := &bsr.blockData
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streamID := bd.streamID
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if err := bd.unmarshalRows(&tmp, sbu, vd); err != nil {
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logger.Panicf("BUG: cannot unmarshal log entries from inmemoryPart: %s", err)
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}
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for i, timestamp := range tmp.timestamps {
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lr.MustAdd(streamID.tenantID, timestamp, tmp.rows[i])
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lr.streamIDs[len(lr.streamIDs)-1] = streamID
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}
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tmp.reset()
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}
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return lr
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}
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