414 lines
12 KiB
Go
414 lines
12 KiB
Go
package tsi1_test
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import (
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"fmt"
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"io/ioutil"
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"os"
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"path/filepath"
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"reflect"
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"regexp"
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"testing"
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"github.com/influxdata/influxdb/models"
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"github.com/influxdata/influxdb/tsdb/index/tsi1"
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)
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// Bloom filter settings used in tests.
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const M, K = 4096, 6
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// Ensure index can iterate over all measurement names.
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func TestIndex_ForEachMeasurementName(t *testing.T) {
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idx := MustOpenIndex(1)
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defer idx.Close()
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// Add series to index.
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if err := idx.CreateSeriesSliceIfNotExists([]Series{
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{Name: []byte("cpu"), Tags: models.NewTags(map[string]string{"region": "east"})},
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{Name: []byte("cpu"), Tags: models.NewTags(map[string]string{"region": "west"})},
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{Name: []byte("mem"), Tags: models.NewTags(map[string]string{"region": "east"})},
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}); err != nil {
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t.Fatal(err)
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}
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// Verify measurements are returned.
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idx.Run(t, func(t *testing.T) {
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var names []string
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if err := idx.ForEachMeasurementName(func(name []byte) error {
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names = append(names, string(name))
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return nil
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}); err != nil {
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t.Fatal(err)
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}
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if !reflect.DeepEqual(names, []string{"cpu", "mem"}) {
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t.Fatalf("unexpected names: %#v", names)
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}
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})
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// Add more series.
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if err := idx.CreateSeriesSliceIfNotExists([]Series{
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{Name: []byte("disk")},
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{Name: []byte("mem")},
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}); err != nil {
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t.Fatal(err)
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}
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// Verify new measurements.
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idx.Run(t, func(t *testing.T) {
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var names []string
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if err := idx.ForEachMeasurementName(func(name []byte) error {
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names = append(names, string(name))
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return nil
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}); err != nil {
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t.Fatal(err)
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}
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if !reflect.DeepEqual(names, []string{"cpu", "disk", "mem"}) {
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t.Fatalf("unexpected names: %#v", names)
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}
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})
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}
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// Ensure index can return whether a measurement exists.
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func TestIndex_MeasurementExists(t *testing.T) {
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idx := MustOpenIndex(1)
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defer idx.Close()
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// Add series to index.
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if err := idx.CreateSeriesSliceIfNotExists([]Series{
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{Name: []byte("cpu"), Tags: models.NewTags(map[string]string{"region": "east"})},
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{Name: []byte("cpu"), Tags: models.NewTags(map[string]string{"region": "west"})},
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}); err != nil {
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t.Fatal(err)
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}
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// Verify measurement exists.
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idx.Run(t, func(t *testing.T) {
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if v, err := idx.MeasurementExists([]byte("cpu")); err != nil {
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t.Fatal(err)
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} else if !v {
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t.Fatal("expected measurement to exist")
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}
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})
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name, tags := []byte("cpu"), models.NewTags(map[string]string{"region": "east"})
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sid := idx.Index.SeriesFile().SeriesID(name, tags, nil)
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if sid == 0 {
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t.Fatalf("got 0 series id for %s/%v", name, tags)
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}
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// Delete one series.
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if err := idx.DropSeries(sid, models.MakeKey(name, tags), true); err != nil {
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t.Fatal(err)
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}
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// Verify measurement still exists.
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idx.Run(t, func(t *testing.T) {
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if v, err := idx.MeasurementExists([]byte("cpu")); err != nil {
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t.Fatal(err)
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} else if !v {
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t.Fatal("expected measurement to still exist")
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}
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})
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// Delete second series.
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tags.Set([]byte("region"), []byte("west"))
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sid = idx.Index.SeriesFile().SeriesID(name, tags, nil)
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if sid == 0 {
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t.Fatalf("got 0 series id for %s/%v", name, tags)
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}
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if err := idx.DropSeries(sid, models.MakeKey(name, tags), true); err != nil {
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t.Fatal(err)
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}
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// Verify measurement is now deleted.
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idx.Run(t, func(t *testing.T) {
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if v, err := idx.MeasurementExists([]byte("cpu")); err != nil {
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t.Fatal(err)
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} else if v {
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t.Fatal("expected measurement to be deleted")
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}
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})
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}
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// Ensure index can return a list of matching measurements.
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func TestIndex_MeasurementNamesByRegex(t *testing.T) {
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idx := MustOpenIndex(1)
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defer idx.Close()
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// Add series to index.
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if err := idx.CreateSeriesSliceIfNotExists([]Series{
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{Name: []byte("cpu")},
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{Name: []byte("disk")},
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{Name: []byte("mem")},
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}); err != nil {
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t.Fatal(err)
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}
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// Retrieve measurements by regex.
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idx.Run(t, func(t *testing.T) {
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names, err := idx.MeasurementNamesByRegex(regexp.MustCompile(`cpu|mem`))
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if err != nil {
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t.Fatal(err)
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} else if !reflect.DeepEqual(names, [][]byte{[]byte("cpu"), []byte("mem")}) {
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t.Fatalf("unexpected names: %v", names)
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}
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})
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}
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// Ensure index can delete a measurement and all related keys, values, & series.
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func TestIndex_DropMeasurement(t *testing.T) {
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idx := MustOpenIndex(1)
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defer idx.Close()
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// Add series to index.
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if err := idx.CreateSeriesSliceIfNotExists([]Series{
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{Name: []byte("cpu"), Tags: models.NewTags(map[string]string{"region": "east"})},
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{Name: []byte("cpu"), Tags: models.NewTags(map[string]string{"region": "west"})},
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{Name: []byte("disk"), Tags: models.NewTags(map[string]string{"region": "north"})},
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{Name: []byte("mem"), Tags: models.NewTags(map[string]string{"region": "west", "country": "us"})},
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}); err != nil {
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t.Fatal(err)
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}
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// Drop measurement.
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if err := idx.DropMeasurement([]byte("cpu")); err != nil {
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t.Fatal(err)
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}
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// Verify data is gone in each stage.
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idx.Run(t, func(t *testing.T) {
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// Verify measurement is gone.
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if v, err := idx.MeasurementExists([]byte("cpu")); err != nil {
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t.Fatal(err)
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} else if v {
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t.Fatal("expected no measurement")
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}
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// Obtain file set to perform lower level checks.
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fs, err := idx.PartitionAt(0).RetainFileSet()
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if err != nil {
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t.Fatal(err)
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}
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defer fs.Release()
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// Verify tags & values are gone.
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if e := fs.TagKeyIterator([]byte("cpu")).Next(); e != nil && !e.Deleted() {
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t.Fatal("expected deleted tag key")
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}
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if itr := fs.TagValueIterator([]byte("cpu"), []byte("region")); itr != nil {
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t.Fatal("expected nil tag value iterator")
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}
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})
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}
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func TestIndex_Open(t *testing.T) {
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// Opening a fresh index should set the MANIFEST version to current version.
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idx := NewIndex(tsi1.DefaultPartitionN)
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t.Run("open new index", func(t *testing.T) {
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if err := idx.Open(); err != nil {
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t.Fatal(err)
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}
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// Check version set appropriately.
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for i := 0; uint64(i) < tsi1.DefaultPartitionN; i++ {
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partition := idx.PartitionAt(i)
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if got, exp := partition.Manifest().Version, 1; got != exp {
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t.Fatalf("got index version %d, expected %d", got, exp)
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}
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}
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})
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// Reopening an open index should return an error.
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t.Run("reopen open index", func(t *testing.T) {
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err := idx.Open()
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if err == nil {
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idx.Close()
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t.Fatal("didn't get an error on reopen, but expected one")
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}
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idx.Close()
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})
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// Opening an incompatible index should return an error.
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incompatibleVersions := []int{-1, 0, 2}
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for _, v := range incompatibleVersions {
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t.Run(fmt.Sprintf("incompatible index version: %d", v), func(t *testing.T) {
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idx = NewIndex(tsi1.DefaultPartitionN)
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// Manually create a MANIFEST file for an incompatible index version.
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// under one of the partitions.
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partitionPath := filepath.Join(idx.Path(), "2")
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os.MkdirAll(partitionPath, 0777)
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mpath := filepath.Join(partitionPath, tsi1.ManifestFileName)
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m := tsi1.NewManifest(mpath)
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m.Levels = nil
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m.Version = v // Set example MANIFEST version.
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if _, err := m.Write(); err != nil {
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t.Fatal(err)
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}
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// Log the MANIFEST file.
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data, err := ioutil.ReadFile(mpath)
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if err != nil {
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panic(err)
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}
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t.Logf("Incompatible MANIFEST: %s", data)
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// Opening this index should return an error because the MANIFEST has an
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// incompatible version.
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err = idx.Open()
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if err != tsi1.ErrIncompatibleVersion {
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idx.Close()
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t.Fatalf("got error %v, expected %v", err, tsi1.ErrIncompatibleVersion)
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}
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})
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}
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}
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func TestIndex_Manifest(t *testing.T) {
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t.Run("current MANIFEST", func(t *testing.T) {
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idx := MustOpenIndex(tsi1.DefaultPartitionN)
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// Check version set appropriately.
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for i := 0; uint64(i) < tsi1.DefaultPartitionN; i++ {
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partition := idx.PartitionAt(i)
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if got, exp := partition.Manifest().Version, tsi1.Version; got != exp {
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t.Fatalf("got MANIFEST version %d, expected %d", got, exp)
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}
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}
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})
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}
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func TestIndex_DiskSizeBytes(t *testing.T) {
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idx := MustOpenIndex(tsi1.DefaultPartitionN)
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defer idx.Close()
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// Add series to index.
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if err := idx.CreateSeriesSliceIfNotExists([]Series{
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{Name: []byte("cpu"), Tags: models.NewTags(map[string]string{"region": "east"})},
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{Name: []byte("cpu"), Tags: models.NewTags(map[string]string{"region": "west"})},
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{Name: []byte("disk"), Tags: models.NewTags(map[string]string{"region": "north"})},
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{Name: []byte("mem"), Tags: models.NewTags(map[string]string{"region": "west", "country": "us"})},
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}); err != nil {
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t.Fatal(err)
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}
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// Verify on disk size is the same in each stage.
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// Each series stores flag(1) + series(uvarint(2)) + len(name)(1) + len(key)(1) + len(value)(1) + checksum(4).
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expSize := int64(4 * 9)
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// Each MANIFEST file is 419 bytes and there are tsi1.DefaultPartitionN of them
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expSize += int64(tsi1.DefaultPartitionN * 419)
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idx.Run(t, func(t *testing.T) {
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if got, exp := idx.DiskSizeBytes(), expSize; got != exp {
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t.Fatalf("got %d bytes, expected %d", got, exp)
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}
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})
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}
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// Index is a test wrapper for tsi1.Index.
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type Index struct {
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*tsi1.Index
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SeriesFile *SeriesFile
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}
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// NewIndex returns a new instance of Index at a temporary path.
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func NewIndex(partitionN uint64) *Index {
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idx := &Index{SeriesFile: NewSeriesFile()}
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idx.Index = tsi1.NewIndex(idx.SeriesFile.SeriesFile, "db0", tsi1.WithPath(MustTempDir()))
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idx.Index.PartitionN = partitionN
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return idx
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}
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// MustOpenIndex returns a new, open index. Panic on error.
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func MustOpenIndex(partitionN uint64) *Index {
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idx := NewIndex(partitionN)
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if err := idx.Open(); err != nil {
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panic(err)
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}
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return idx
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}
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// Open opens the underlying tsi1.Index and tsdb.SeriesFile
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func (idx Index) Open() error {
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if err := idx.SeriesFile.Open(); err != nil {
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return err
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}
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return idx.Index.Open()
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}
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// Close closes and removes the index directory.
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func (idx *Index) Close() error {
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defer os.RemoveAll(idx.Path())
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if err := idx.SeriesFile.Close(); err != nil {
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return err
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}
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return idx.Index.Close()
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}
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// Reopen closes and opens the index.
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func (idx *Index) Reopen() error {
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if err := idx.Index.Close(); err != nil {
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return err
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}
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// Reopen the series file correctly, by initialising a new underlying series
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// file using the same disk data.
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if err := idx.SeriesFile.Reopen(); err != nil {
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return err
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}
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partitionN := idx.Index.PartitionN // Remember how many partitions to use.
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idx.Index = tsi1.NewIndex(idx.SeriesFile.SeriesFile, "db0", tsi1.WithPath(idx.Index.Path()))
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idx.Index.PartitionN = partitionN
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return idx.Open()
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}
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// Run executes a subtest for each of several different states:
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//
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// - Immediately
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// - After reopen
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// - After compaction
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// - After reopen again
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//
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// The index should always respond in the same fashion regardless of
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// how data is stored. This helper allows the index to be easily tested
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// in all major states.
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func (idx *Index) Run(t *testing.T, fn func(t *testing.T)) {
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// Invoke immediately.
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t.Run("state=initial", fn)
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// Reopen and invoke again.
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if err := idx.Reopen(); err != nil {
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t.Fatalf("reopen error: %s", err)
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}
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t.Run("state=reopen", fn)
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// TODO: Request a compaction.
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// if err := idx.Compact(); err != nil {
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// t.Fatalf("compact error: %s", err)
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// }
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// t.Run("state=post-compaction", fn)
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// Reopen and invoke again.
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if err := idx.Reopen(); err != nil {
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t.Fatalf("post-compaction reopen error: %s", err)
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}
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t.Run("state=post-compaction-reopen", fn)
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}
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// CreateSeriesSliceIfNotExists creates multiple series at a time.
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func (idx *Index) CreateSeriesSliceIfNotExists(a []Series) error {
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keys := make([][]byte, 0, len(a))
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names := make([][]byte, 0, len(a))
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tags := make([]models.Tags, 0, len(a))
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for _, s := range a {
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keys = append(keys, models.MakeKey(s.Name, s.Tags))
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names = append(names, s.Name)
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tags = append(tags, s.Tags)
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}
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return idx.CreateSeriesListIfNotExists(keys, names, tags)
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}
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