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data_test.go
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data_test.go
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// Copyright 2018 The LevelDB-Go and Pebble Authors. All rights reserved. Use
// of this source code is governed by a BSD-style license that can be found in
// the LICENSE file.
package pebble
import (
"bytes"
crand "crypto/rand"
"fmt"
"io"
"math"
"math/rand"
"regexp"
"strconv"
"strings"
"testing"
"time"
"github.com/cockroachdb/datadriven"
"github.com/cockroachdb/errors"
"github.com/cockroachdb/pebble/bloom"
"github.com/cockroachdb/pebble/internal/base"
"github.com/cockroachdb/pebble/internal/humanize"
"github.com/cockroachdb/pebble/internal/keyspan"
"github.com/cockroachdb/pebble/internal/private"
"github.com/cockroachdb/pebble/internal/rangedel"
"github.com/cockroachdb/pebble/internal/rangekey"
"github.com/cockroachdb/pebble/internal/testkeys"
"github.com/cockroachdb/pebble/objstorage/objstorageprovider"
"github.com/cockroachdb/pebble/objstorage/remote"
"github.com/cockroachdb/pebble/sstable"
"github.com/cockroachdb/pebble/vfs"
"github.com/cockroachdb/pebble/vfs/errorfs"
"github.com/ghemawat/stream"
"github.com/stretchr/testify/require"
)
func runGetCmd(t testing.TB, td *datadriven.TestData, d *DB) string {
snap := Snapshot{
db: d,
seqNum: InternalKeySeqNumMax,
}
td.MaybeScanArgs(t, "seq", &snap.seqNum)
var buf bytes.Buffer
for _, data := range strings.Split(td.Input, "\n") {
v, closer, err := snap.Get([]byte(data))
if err != nil {
fmt.Fprintf(&buf, "%s: %s\n", data, err)
} else {
fmt.Fprintf(&buf, "%s:%s\n", data, v)
closer.Close()
}
}
return buf.String()
}
func runIterCmd(d *datadriven.TestData, iter *Iterator, closeIter bool) string {
if closeIter {
defer func() {
if iter != nil {
iter.Close()
}
}()
}
var b bytes.Buffer
for _, line := range strings.Split(d.Input, "\n") {
parts := strings.Fields(line)
if len(parts) == 0 {
continue
}
printValidityState := false
var valid bool
var validityState IterValidityState
switch parts[0] {
case "seek-ge":
if len(parts) != 2 {
return "seek-ge <key>\n"
}
valid = iter.SeekGE([]byte(parts[1]))
case "seek-prefix-ge":
if len(parts) != 2 {
return "seek-prefix-ge <key>\n"
}
valid = iter.SeekPrefixGE([]byte(parts[1]))
case "seek-lt":
if len(parts) != 2 {
return "seek-lt <key>\n"
}
valid = iter.SeekLT([]byte(parts[1]))
case "seek-ge-limit":
if len(parts) != 3 {
return "seek-ge-limit <key> <limit>\n"
}
validityState = iter.SeekGEWithLimit(
[]byte(parts[1]), []byte(parts[2]))
printValidityState = true
case "seek-lt-limit":
if len(parts) != 3 {
return "seek-lt-limit <key> <limit>\n"
}
validityState = iter.SeekLTWithLimit(
[]byte(parts[1]), []byte(parts[2]))
printValidityState = true
case "inspect":
if len(parts) != 2 {
return "inspect <field>\n"
}
field := parts[1]
switch field {
case "lastPositioningOp":
op := "?"
switch iter.lastPositioningOp {
case unknownLastPositionOp:
op = "unknown"
case seekPrefixGELastPositioningOp:
op = "seekprefixge"
case seekGELastPositioningOp:
op = "seekge"
case seekLTLastPositioningOp:
op = "seeklt"
}
fmt.Fprintf(&b, "%s=%q\n", field, op)
default:
return fmt.Sprintf("unrecognized inspect field %q\n", field)
}
continue
case "next-limit":
if len(parts) != 2 {
return "next-limit <limit>\n"
}
validityState = iter.NextWithLimit([]byte(parts[1]))
printValidityState = true
case "internal-next":
validity, keyKind := iter.internalNext()
switch validity {
case internalNextError:
fmt.Fprintf(&b, "err: %s\n", iter.Error())
case internalNextExhausted:
fmt.Fprint(&b, ".\n")
case internalNextValid:
fmt.Fprintf(&b, "%s\n", keyKind)
default:
panic("unreachable")
}
continue
case "can-deterministically-single-delete":
ok, err := CanDeterministicallySingleDelete(iter)
if err != nil {
fmt.Fprintf(&b, "err: %s\n", err)
} else {
fmt.Fprintf(&b, "%t\n", ok)
}
continue
case "prev-limit":
if len(parts) != 2 {
return "prev-limit <limit>\n"
}
validityState = iter.PrevWithLimit([]byte(parts[1]))
printValidityState = true
case "first":
valid = iter.First()
case "last":
valid = iter.Last()
case "next":
valid = iter.Next()
case "next-prefix":
valid = iter.NextPrefix()
case "prev":
valid = iter.Prev()
case "set-bounds":
if len(parts) <= 1 || len(parts) > 3 {
return "set-bounds lower=<lower> upper=<upper>\n"
}
var lower []byte
var upper []byte
for _, part := range parts[1:] {
arg := strings.Split(part, "=")
switch arg[0] {
case "lower":
lower = []byte(arg[1])
case "upper":
upper = []byte(arg[1])
default:
return fmt.Sprintf("set-bounds: unknown arg: %s", arg)
}
}
iter.SetBounds(lower, upper)
valid = iter.Valid()
case "set-options":
opts := iter.opts
if _, err := parseIterOptions(&opts, &iter.opts, parts[1:]); err != nil {
return fmt.Sprintf("set-options: %s", err.Error())
}
iter.SetOptions(&opts)
valid = iter.Valid()
case "stats":
stats := iter.Stats()
// The timing is non-deterministic, so set to 0.
stats.InternalStats.BlockReadDuration = 0
fmt.Fprintf(&b, "stats: %s\n", stats.String())
continue
case "clone":
var opts CloneOptions
if len(parts) > 1 {
var iterOpts IterOptions
if foundAny, err := parseIterOptions(&iterOpts, &iter.opts, parts[1:]); err != nil {
return fmt.Sprintf("clone: %s", err.Error())
} else if foundAny {
opts.IterOptions = &iterOpts
}
for _, part := range parts[1:] {
if arg := strings.Split(part, "="); len(arg) == 2 && arg[0] == "refresh-batch" {
var err error
opts.RefreshBatchView, err = strconv.ParseBool(arg[1])
if err != nil {
return fmt.Sprintf("clone: refresh-batch: %s", err.Error())
}
}
}
}
clonedIter, err := iter.Clone(opts)
if err != nil {
fmt.Fprintf(&b, "error in clone, skipping rest of input: err=%v\n", err)
return b.String()
}
if err = iter.Close(); err != nil {
fmt.Fprintf(&b, "err=%v\n", err)
}
iter = clonedIter
case "is-using-combined":
if iter.opts.KeyTypes != IterKeyTypePointsAndRanges {
fmt.Fprintln(&b, "not configured for combined iteration")
} else if iter.lazyCombinedIter.combinedIterState.initialized {
fmt.Fprintln(&b, "using combined (non-lazy) iterator")
} else {
fmt.Fprintln(&b, "using lazy iterator")
}
continue
default:
return fmt.Sprintf("unknown op: %s", parts[0])
}
valid = valid || validityState == IterValid
if valid != iter.Valid() {
fmt.Fprintf(&b, "mismatched valid states: %t vs %t\n", valid, iter.Valid())
}
hasPoint, hasRange := iter.HasPointAndRange()
hasEither := hasPoint || hasRange
if hasEither != valid {
fmt.Fprintf(&b, "mismatched valid/HasPointAndRange states: valid=%t HasPointAndRange=(%t,%t)\n", valid, hasPoint, hasRange)
}
if valid {
validityState = IterValid
}
printIterState(&b, iter, validityState, printValidityState)
}
return b.String()
}
func parseIterOptions(
opts *IterOptions, ref *IterOptions, parts []string,
) (foundAny bool, err error) {
const usageString = "[lower=<lower>] [upper=<upper>] [key-types=point|range|both] [mask-suffix=<suffix>] [mask-filter=<bool>] [only-durable=<bool>] point-filters=reuse|none]\n"
for _, part := range parts {
arg := strings.SplitN(part, "=", 2)
if len(arg) != 2 {
return false, errors.Newf(usageString)
}
switch arg[0] {
case "point-filters":
switch arg[1] {
case "reuse":
opts.PointKeyFilters = ref.PointKeyFilters
case "none":
opts.PointKeyFilters = nil
default:
return false, errors.Newf("unknown arg point-filter=%q:\n%s", arg[1], usageString)
}
case "lower":
opts.LowerBound = []byte(arg[1])
case "upper":
opts.UpperBound = []byte(arg[1])
case "key-types":
switch arg[1] {
case "point":
opts.KeyTypes = IterKeyTypePointsOnly
case "range":
opts.KeyTypes = IterKeyTypeRangesOnly
case "both":
opts.KeyTypes = IterKeyTypePointsAndRanges
default:
return false, errors.Newf("unknown key-type %q:\n%s", arg[1], usageString)
}
case "mask-suffix":
opts.RangeKeyMasking.Suffix = []byte(arg[1])
case "mask-filter":
opts.RangeKeyMasking.Filter = func() BlockPropertyFilterMask {
return sstable.NewTestKeysMaskingFilter()
}
case "only-durable":
var err error
opts.OnlyReadGuaranteedDurable, err = strconv.ParseBool(arg[1])
if err != nil {
return false, errors.Newf("cannot parse only-durable=%q: %s", arg[1], err)
}
default:
continue
}
foundAny = true
}
return foundAny, nil
}
func printIterState(
b io.Writer, iter *Iterator, validity IterValidityState, printValidityState bool,
) {
var validityStateStr string
if printValidityState {
switch validity {
case IterExhausted:
validityStateStr = " exhausted"
case IterValid:
validityStateStr = " valid"
case IterAtLimit:
validityStateStr = " at-limit"
}
}
if validity == IterValid {
switch {
case iter.opts.pointKeys():
hasPoint, hasRange := iter.HasPointAndRange()
fmt.Fprintf(b, "%s:%s (", iter.Key(), validityStateStr)
if hasPoint {
fmt.Fprintf(b, "%s, ", iter.Value())
} else {
fmt.Fprint(b, "., ")
}
if hasRange {
start, end := iter.RangeBounds()
fmt.Fprintf(b, "[%s-%s)", formatASCIIKey(start), formatASCIIKey(end))
writeRangeKeys(b, iter)
} else {
fmt.Fprint(b, ".")
}
if iter.RangeKeyChanged() {
fmt.Fprint(b, " UPDATED")
}
fmt.Fprint(b, ")")
default:
if iter.Valid() {
hasPoint, hasRange := iter.HasPointAndRange()
if hasPoint || !hasRange {
panic(fmt.Sprintf("pebble: unexpected HasPointAndRange (%t, %t)", hasPoint, hasRange))
}
start, end := iter.RangeBounds()
fmt.Fprintf(b, "%s [%s-%s)", iter.Key(), formatASCIIKey(start), formatASCIIKey(end))
writeRangeKeys(b, iter)
} else {
fmt.Fprint(b, ".")
}
if iter.RangeKeyChanged() {
fmt.Fprint(b, " UPDATED")
}
}
fmt.Fprintln(b)
} else {
if err := iter.Error(); err != nil {
fmt.Fprintf(b, "err=%v\n", err)
} else {
fmt.Fprintf(b, ".%s\n", validityStateStr)
}
}
}
func formatASCIIKey(b []byte) string {
if bytes.IndexFunc(b, func(r rune) bool { return r < 'A' || r > 'z' }) != -1 {
// This key is not just ASCII letters. Quote it.
return fmt.Sprintf("%q", b)
}
return string(b)
}
func writeRangeKeys(b io.Writer, iter *Iterator) {
rangeKeys := iter.RangeKeys()
for j := 0; j < len(rangeKeys); j++ {
if j > 0 {
fmt.Fprint(b, ",")
}
fmt.Fprintf(b, " %s=%s", rangeKeys[j].Suffix, rangeKeys[j].Value)
}
}
func runBatchDefineCmd(d *datadriven.TestData, b *Batch) error {
for _, line := range strings.Split(d.Input, "\n") {
parts := strings.Fields(line)
if len(parts) == 0 {
continue
}
if parts[1] == `<nil>` {
parts[1] = ""
}
var err error
switch parts[0] {
case "set":
if len(parts) != 3 {
return errors.Errorf("%s expects 2 arguments", parts[0])
}
err = b.Set([]byte(parts[1]), []byte(parts[2]), nil)
case "del":
if len(parts) != 2 {
return errors.Errorf("%s expects 1 argument", parts[0])
}
err = b.Delete([]byte(parts[1]), nil)
case "del-sized":
if len(parts) != 3 {
return errors.Errorf("%s expects 2 arguments", parts[0])
}
var valSize uint64
valSize, err = strconv.ParseUint(parts[2], 10, 32)
if err != nil {
return err
}
err = b.DeleteSized([]byte(parts[1]), uint32(valSize), nil)
case "singledel":
if len(parts) != 2 {
return errors.Errorf("%s expects 1 argument", parts[0])
}
err = b.SingleDelete([]byte(parts[1]), nil)
case "del-range":
if len(parts) != 3 {
return errors.Errorf("%s expects 2 arguments", parts[0])
}
err = b.DeleteRange([]byte(parts[1]), []byte(parts[2]), nil)
case "merge":
if len(parts) != 3 {
return errors.Errorf("%s expects 2 arguments", parts[0])
}
err = b.Merge([]byte(parts[1]), []byte(parts[2]), nil)
case "range-key-set":
if len(parts) < 4 || len(parts) > 5 {
return errors.Errorf("%s expects 3 or 4 arguments", parts[0])
}
var val []byte
if len(parts) == 5 {
val = []byte(parts[4])
}
err = b.RangeKeySet(
[]byte(parts[1]),
[]byte(parts[2]),
[]byte(parts[3]),
val,
nil)
case "range-key-unset":
if len(parts) != 4 {
return errors.Errorf("%s expects 3 arguments", parts[0])
}
err = b.RangeKeyUnset(
[]byte(parts[1]),
[]byte(parts[2]),
[]byte(parts[3]),
nil)
case "range-key-del":
if len(parts) != 3 {
return errors.Errorf("%s expects 2 arguments", parts[0])
}
err = b.RangeKeyDelete(
[]byte(parts[1]),
[]byte(parts[2]),
nil)
default:
return errors.Errorf("unknown op: %s", parts[0])
}
if err != nil {
return err
}
}
return nil
}
func runBuildRemoteCmd(td *datadriven.TestData, d *DB, storage remote.Storage) error {
b := d.NewIndexedBatch()
if err := runBatchDefineCmd(td, b); err != nil {
return err
}
if len(td.CmdArgs) < 1 {
return errors.New("build <path>: argument missing")
}
path := td.CmdArgs[0].String()
// Override table format, if provided.
tableFormat := d.opts.FormatMajorVersion.MaxTableFormat()
var blockSize int64
for _, cmdArg := range td.CmdArgs[1:] {
switch cmdArg.Key {
case "format":
switch cmdArg.Vals[0] {
case "pebblev1":
tableFormat = sstable.TableFormatPebblev1
case "pebblev2":
tableFormat = sstable.TableFormatPebblev2
case "pebblev3":
tableFormat = sstable.TableFormatPebblev3
case "pebblev4":
tableFormat = sstable.TableFormatPebblev4
default:
return errors.Errorf("unknown format string %s", cmdArg.Vals[0])
}
case "block-size":
var err error
blockSize, err = strconv.ParseInt(cmdArg.Vals[0], 10, 64)
if err != nil {
return errors.Wrap(err, td.Pos)
}
}
}
writeOpts := d.opts.MakeWriterOptions(0 /* level */, tableFormat)
if blockSize == 0 && rand.Intn(4) == 0 {
// Force two-level indexes if not already forced on or off.
blockSize = 5
}
writeOpts.BlockSize = int(blockSize)
writeOpts.IndexBlockSize = int(blockSize)
f, err := storage.CreateObject(path)
if err != nil {
return err
}
w := sstable.NewWriter(objstorageprovider.NewRemoteWritable(f), writeOpts)
iter := b.newInternalIter(nil)
for kv := iter.First(); kv != nil; kv = iter.Next() {
tmp := kv.K
tmp.SetSeqNum(0)
if err := w.Add(tmp, kv.InPlaceValue()); err != nil {
return err
}
}
if err := iter.Close(); err != nil {
return err
}
if rdi := b.newRangeDelIter(nil, math.MaxUint64); rdi != nil {
s, err := rdi.First()
for ; s != nil && err == nil; s, err = rdi.Next() {
err = rangedel.Encode(s, func(k base.InternalKey, v []byte) error {
k.SetSeqNum(0)
return w.Add(k, v)
})
if err != nil {
return err
}
}
if err != nil {
return err
}
}
if rki := b.newRangeKeyIter(nil, math.MaxUint64); rki != nil {
s, err := rki.First()
for ; s != nil; s, err = rki.Next() {
for _, k := range s.Keys {
var err error
switch k.Kind() {
case base.InternalKeyKindRangeKeySet:
err = w.RangeKeySet(s.Start, s.End, k.Suffix, k.Value)
case base.InternalKeyKindRangeKeyUnset:
err = w.RangeKeyUnset(s.Start, s.End, k.Suffix)
case base.InternalKeyKindRangeKeyDelete:
err = w.RangeKeyDelete(s.Start, s.End)
default:
panic("not a range key")
}
if err != nil {
return err
}
}
}
if err != nil {
return err
}
}
return w.Close()
}
func runBuildCmd(td *datadriven.TestData, d *DB, fs vfs.FS) error {
b := newIndexedBatch(nil, d.opts.Comparer)
if err := runBatchDefineCmd(td, b); err != nil {
return err
}
if len(td.CmdArgs) < 1 {
return errors.New("build <path>: argument missing")
}
path := td.CmdArgs[0].String()
// Override table format, if provided.
tableFormat := d.opts.FormatMajorVersion.MaxTableFormat()
for _, cmdArg := range td.CmdArgs[1:] {
switch cmdArg.Key {
case "format":
switch cmdArg.Vals[0] {
case "pebblev1":
tableFormat = sstable.TableFormatPebblev1
case "pebblev2":
tableFormat = sstable.TableFormatPebblev2
case "pebblev3":
tableFormat = sstable.TableFormatPebblev3
case "pebblev4":
tableFormat = sstable.TableFormatPebblev4
default:
return errors.Errorf("unknown format string %s", cmdArg.Vals[0])
}
}
}
writeOpts := d.opts.MakeWriterOptions(0 /* level */, tableFormat)
f, err := fs.Create(path, vfs.WriteCategoryUnspecified)
if err != nil {
return err
}
w := sstable.NewWriter(objstorageprovider.NewFileWritable(f), writeOpts)
iter := b.newInternalIter(nil)
for kv := iter.First(); kv != nil; kv = iter.Next() {
tmp := kv.K
tmp.SetSeqNum(0)
if err := w.Add(tmp, kv.InPlaceValue()); err != nil {
return err
}
}
if err := iter.Close(); err != nil {
return err
}
if rdi := b.newRangeDelIter(nil, math.MaxUint64); rdi != nil {
s, err := rdi.First()
for ; s != nil && err == nil; s, err = rdi.Next() {
err = rangedel.Encode(s, func(k base.InternalKey, v []byte) error {
k.SetSeqNum(0)
return w.Add(k, v)
})
if err != nil {
return err
}
}
if err != nil {
return err
}
}
if rki := b.newRangeKeyIter(nil, math.MaxUint64); rki != nil {
s, err := rki.First()
for ; s != nil; s, err = rki.Next() {
for _, k := range s.Keys {
var err error
switch k.Kind() {
case base.InternalKeyKindRangeKeySet:
err = w.RangeKeySet(s.Start, s.End, k.Suffix, k.Value)
case base.InternalKeyKindRangeKeyUnset:
err = w.RangeKeyUnset(s.Start, s.End, k.Suffix)
case base.InternalKeyKindRangeKeyDelete:
err = w.RangeKeyDelete(s.Start, s.End)
default:
panic("not a range key")
}
if err != nil {
return err
}
}
}
if err != nil {
return err
}
}
return w.Close()
}
func runCompactCmd(td *datadriven.TestData, d *DB) error {
if len(td.CmdArgs) > 4 {
return errors.Errorf("%s expects at most four arguments", td.Cmd)
}
parts := strings.Split(td.CmdArgs[0].Key, "-")
if len(parts) != 2 {
return errors.Errorf("expected <begin>-<end>: %s", td.Input)
}
parallelize := td.HasArg("parallel")
if len(td.CmdArgs) >= 2 && strings.HasPrefix(td.CmdArgs[1].Key, "L") {
levelString := td.CmdArgs[1].String()
iStart := base.MakeInternalKey([]byte(parts[0]), InternalKeySeqNumMax, InternalKeyKindMax)
iEnd := base.MakeInternalKey([]byte(parts[1]), 0, 0)
if levelString[0] != 'L' {
return errors.Errorf("expected L<n>: %s", levelString)
}
level, err := strconv.Atoi(levelString[1:])
if err != nil {
return err
}
return d.manualCompact(iStart.UserKey, iEnd.UserKey, level, parallelize)
}
return d.Compact([]byte(parts[0]), []byte(parts[1]), parallelize)
}
// runDBDefineCmd prepares a database state, returning the opened
// database with the initialized state.
//
// The command accepts input describing memtables and sstables to
// construct. Each new table is indicated by a line containing the
// level of the next table to build (eg, "L6"), or "mem" to build
// a memtable. Each subsequent line contains a new key-value pair.
//
// Point keys and range deletions should be encoded as the
// InternalKey's string representation, as understood by
// ParseInternalKey, followed a colon and the corresponding value.
//
// b.SET.50:foo
// c.DEL.20
//
// Range keys may be encoded by prefixing the line with `rangekey:`,
// followed by the keyspan.Span string representation, as understood
// by keyspan.ParseSpan.
//
// rangekey:b-d:{(#5,RANGEKEYSET,@2,foo)}
//
// # Mechanics
//
// runDBDefineCmd works by simulating a flush for every file written.
// Keys are written to a memtable. When a file is complete, the table
// is flushed to physical files through manually invoking runCompaction.
// The resulting version edit is then manipulated to write the files
// to the indicated level.
//
// Because of it's low-level manipulation, runDBDefineCmd does allow the
// creation of invalid database states. If opts.DebugCheck is set, the
// level checker should detect the invalid state.
func runDBDefineCmd(td *datadriven.TestData, opts *Options) (*DB, error) {
opts = opts.EnsureDefaults()
opts.FS = vfs.NewMem()
return runDBDefineCmdReuseFS(td, opts)
}
// runDBDefineCmdReuseFS is like runDBDefineCmd, but does not set opts.FS, expecting
// the caller to have set an appropriate FS already.
func runDBDefineCmdReuseFS(td *datadriven.TestData, opts *Options) (*DB, error) {
opts = opts.EnsureDefaults()
var snapshots []uint64
var levelMaxBytes map[int]int64
for _, arg := range td.CmdArgs {
switch arg.Key {
case "target-file-sizes":
opts.Levels = make([]LevelOptions, len(arg.Vals))
for i := range arg.Vals {
size, err := strconv.ParseInt(arg.Vals[i], 10, 64)
if err != nil {
return nil, err
}
opts.Levels[i].TargetFileSize = size
}
case "snapshots":
snapshots = make([]uint64, len(arg.Vals))
for i := range arg.Vals {
seqNum, err := strconv.ParseUint(arg.Vals[i], 10, 64)
if err != nil {
return nil, err
}
snapshots[i] = seqNum
if i > 0 && snapshots[i] < snapshots[i-1] {
return nil, errors.New("Snapshots must be in ascending order")
}
}
case "lbase-max-bytes":
lbaseMaxBytes, err := strconv.ParseInt(arg.Vals[0], 10, 64)
if err != nil {
return nil, err
}
opts.LBaseMaxBytes = lbaseMaxBytes
case "level-max-bytes":
levelMaxBytes = map[int]int64{}
for i := range arg.Vals {
j := strings.Index(arg.Vals[i], ":")
levelStr := strings.TrimSpace(arg.Vals[i][:j])
level, err := strconv.Atoi(levelStr[1:])
if err != nil {
return nil, err
}
size, err := strconv.ParseInt(strings.TrimSpace(arg.Vals[i][j+1:]), 10, 64)
if err != nil {
return nil, err
}
levelMaxBytes[level] = size
}
case "auto-compactions":
switch arg.Vals[0] {
case "off":
opts.DisableAutomaticCompactions = true
case "on":
opts.DisableAutomaticCompactions = false
default:
return nil, errors.Errorf("Unrecognized %q %q arg value: %q", td.Cmd, arg.Key, arg.Vals[0])
}
case "enable-table-stats":
enable, err := strconv.ParseBool(arg.Vals[0])
if err != nil {
return nil, errors.Errorf("%s: could not parse %q as bool: %s", td.Cmd, arg.Vals[0], err)
}
opts.DisableTableStats = !enable
case "block-size":
size, err := strconv.Atoi(arg.Vals[0])
if err != nil {
return nil, err
}
for _, levelOpts := range opts.Levels {
levelOpts.BlockSize = size
}
case "format-major-version":
fmv, err := strconv.Atoi(arg.Vals[0])
if err != nil {
return nil, err
}
opts.FormatMajorVersion = FormatMajorVersion(fmv)
case "disable-multi-level":
opts.Experimental.MultiLevelCompactionHeuristic = NoMultiLevel{}
}
}
// This is placed after the argument parsing above, because the arguments
// to define should be parsed even if td.Input is empty.
if td.Input == "" {
// Empty LSM.
d, err := Open("", opts)
if err != nil {
return nil, err
}
d.mu.Lock()
for i := range snapshots {
s := &Snapshot{db: d}
s.seqNum = snapshots[i]
d.mu.snapshots.pushBack(s)
}
for l, maxBytes := range levelMaxBytes {
d.mu.versions.picker.(*compactionPickerByScore).levelMaxBytes[l] = maxBytes
}
d.mu.Unlock()
return d, nil
}
d, err := Open("", opts)
if err != nil {
return nil, err
}
d.mu.Lock()
d.mu.versions.dynamicBaseLevel = false
for i := range snapshots {
s := &Snapshot{db: d}
s.seqNum = snapshots[i]
d.mu.snapshots.pushBack(s)
}
defer d.mu.Unlock()
var mem *memTable
var start, end *base.InternalKey
ve := &versionEdit{}
level := -1
maybeFlush := func() error {
if level < 0 {
return nil
}
toFlush := flushableList{{
flushable: mem,
flushed: make(chan struct{}),
}}
c, err := newFlush(d.opts, d.mu.versions.currentVersion(),
d.mu.versions.picker.getBaseLevel(), toFlush, time.Now())
if err != nil {
return err
}
c.disableSpanElision = true
// NB: define allows the test to exactly specify which keys go
// into which sstables. If the test has a small target file
// size to test grandparent limits, etc, the maxOutputFileSize
// can cause splitting /within/ the bounds specified to the
// test. Ignore the target size here, and split only according
// to the user-defined boundaries.
c.maxOutputFileSize = math.MaxUint64
newVE, _, _, err := d.runCompaction(0, c)
if err != nil {
return err
}
largestSeqNum := d.mu.versions.logSeqNum.Load()
for _, f := range newVE.NewFiles {
if start != nil {
f.Meta.SmallestPointKey = *start
f.Meta.Smallest = *start
}
if end != nil {
f.Meta.LargestPointKey = *end
f.Meta.Largest = *end
}
if largestSeqNum <= f.Meta.LargestSeqNum {
largestSeqNum = f.Meta.LargestSeqNum + 1
}
ve.NewFiles = append(ve.NewFiles, newFileEntry{
Level: level,
Meta: f.Meta,
})
}
// The committed keys were never written to the WAL, so neither
// the logSeqNum nor the commit pipeline's visibleSeqNum have
// been ratcheted. Manually ratchet them to the largest sequence
// number committed to ensure iterators opened from the database
// correctly observe the committed keys.
if d.mu.versions.logSeqNum.Load() < largestSeqNum {
d.mu.versions.logSeqNum.Store(largestSeqNum)
}
if d.mu.versions.visibleSeqNum.Load() < largestSeqNum {
d.mu.versions.visibleSeqNum.Store(largestSeqNum)
}
level = -1
return nil
}
// Example, a-c.
parseMeta := func(s string) (*fileMetadata, error) {
parts := strings.Split(s, "-")
if len(parts) != 2 {
return nil, errors.Errorf("malformed table spec: %s", s)
}
m := (&fileMetadata{}).ExtendPointKeyBounds(
opts.Comparer.Compare,
InternalKey{UserKey: []byte(parts[0])},
InternalKey{UserKey: []byte(parts[1])},
)
m.InitPhysicalBacking()
return m, nil
}
// Example, compact: a-c.
parseCompaction := func(outputLevel int, s string) (*compaction, error) {
m, err := parseMeta(s[len("compact:"):])
if err != nil {
return nil, err
}
c := &compaction{
inputs: []compactionLevel{{}, {level: outputLevel}},
smallest: m.Smallest,
largest: m.Largest,
}
c.startLevel, c.outputLevel = &c.inputs[0], &c.inputs[1]
return c, nil
}
for _, line := range strings.Split(td.Input, "\n") {
fields := strings.Fields(line)
if len(fields) > 0 {
switch fields[0] {
case "mem":
if err := maybeFlush(); err != nil {
return nil, err
}
// Add a memtable layer.
if !d.mu.mem.mutable.empty() {
d.mu.mem.mutable = newMemTable(memTableOptions{Options: d.opts})
entry := d.newFlushableEntry(d.mu.mem.mutable, 0, 0)
entry.readerRefs.Add(1)
d.mu.mem.queue = append(d.mu.mem.queue, entry)
d.updateReadStateLocked(nil)
}
mem = d.mu.mem.mutable
start, end = nil, nil
fields = fields[1:]
case "L0", "L1", "L2", "L3", "L4", "L5", "L6":
if err := maybeFlush(); err != nil {
return nil, err
}
var err error
if level, err = strconv.Atoi(fields[0][1:]); err != nil {
return nil, err
}
fields = fields[1:]
start, end = nil, nil
boundFields := 0
for _, field := range fields {
toBreak := false
switch {
case strings.HasPrefix(field, "start="):
ikey := base.ParseInternalKey(strings.TrimPrefix(field, "start="))
start = &ikey
boundFields++
case strings.HasPrefix(field, "end="):
ikey := base.ParseInternalKey(strings.TrimPrefix(field, "end="))
end = &ikey