mirror of
https://source.quilibrium.com/quilibrium/ceremonyclient.git
synced 2024-12-25 08:05:17 +00:00
514 lines
14 KiB
Go
514 lines
14 KiB
Go
// 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 sstable
|
|
|
|
import (
|
|
"bytes"
|
|
"fmt"
|
|
"strconv"
|
|
"strings"
|
|
"testing"
|
|
"time"
|
|
"unsafe"
|
|
|
|
"github.com/cockroachdb/datadriven"
|
|
"github.com/cockroachdb/pebble/internal/base"
|
|
"github.com/cockroachdb/pebble/internal/itertest"
|
|
"github.com/stretchr/testify/require"
|
|
"golang.org/x/exp/rand"
|
|
)
|
|
|
|
func ikey(s string) InternalKey {
|
|
return InternalKey{UserKey: []byte(s)}
|
|
}
|
|
|
|
func TestBlockWriter(t *testing.T) {
|
|
w := &rawBlockWriter{
|
|
blockWriter: blockWriter{restartInterval: 16},
|
|
}
|
|
w.add(ikey("apple"), nil)
|
|
w.add(ikey("apricot"), nil)
|
|
w.add(ikey("banana"), nil)
|
|
block := w.finish()
|
|
|
|
expected := []byte(
|
|
"\x00\x05\x00apple" +
|
|
"\x02\x05\x00ricot" +
|
|
"\x00\x06\x00banana" +
|
|
"\x00\x00\x00\x00\x01\x00\x00\x00")
|
|
if !bytes.Equal(expected, block) {
|
|
t.Fatalf("expected\n%q\nfound\n%q", expected, block)
|
|
}
|
|
}
|
|
|
|
func TestBlockWriterWithPrefix(t *testing.T) {
|
|
w := &rawBlockWriter{
|
|
blockWriter: blockWriter{restartInterval: 2},
|
|
}
|
|
curKey := func() string {
|
|
return string(base.DecodeInternalKey(w.curKey).UserKey)
|
|
}
|
|
addAdapter := func(
|
|
key InternalKey,
|
|
value []byte,
|
|
addValuePrefix bool,
|
|
valuePrefix valuePrefix,
|
|
setHasSameKeyPrefix bool) {
|
|
w.addWithOptionalValuePrefix(
|
|
key, false, value, len(key.UserKey), addValuePrefix, valuePrefix, setHasSameKeyPrefix)
|
|
}
|
|
addAdapter(
|
|
ikey("apple"), []byte("red"), false, 0, true)
|
|
require.Equal(t, "apple", curKey())
|
|
require.Equal(t, "red", string(w.curValue))
|
|
addAdapter(
|
|
ikey("apricot"), []byte("orange"), true, '\xff', false)
|
|
require.Equal(t, "apricot", curKey())
|
|
require.Equal(t, "orange", string(w.curValue))
|
|
// Even though this call has setHasSameKeyPrefix=true, the previous call,
|
|
// which was after the last restart set it to false. So the restart encoded
|
|
// with banana has this cumulative bit set to false.
|
|
addAdapter(
|
|
ikey("banana"), []byte("yellow"), true, '\x00', true)
|
|
require.Equal(t, "banana", curKey())
|
|
require.Equal(t, "yellow", string(w.curValue))
|
|
addAdapter(
|
|
ikey("cherry"), []byte("red"), false, 0, true)
|
|
require.Equal(t, "cherry", curKey())
|
|
require.Equal(t, "red", string(w.curValue))
|
|
// All intervening calls has setHasSameKeyPrefix=true, so the cumulative bit
|
|
// will be set to true in this restart.
|
|
addAdapter(
|
|
ikey("mango"), []byte("juicy"), false, 0, true)
|
|
require.Equal(t, "mango", curKey())
|
|
require.Equal(t, "juicy", string(w.curValue))
|
|
|
|
block := w.finish()
|
|
|
|
expected := []byte(
|
|
"\x00\x0d\x03apple\x00\x00\x00\x00\x00\x00\x00\x00red" +
|
|
"\x02\x0d\x07ricot\x00\x00\x00\x00\x00\x00\x00\x00\xfforange" +
|
|
"\x00\x0e\x07banana\x00\x00\x00\x00\x00\x00\x00\x00\x00yellow" +
|
|
"\x00\x0e\x03cherry\x00\x00\x00\x00\x00\x00\x00\x00red" +
|
|
"\x00\x0d\x05mango\x00\x00\x00\x00\x00\x00\x00\x00juicy" +
|
|
// Restarts are:
|
|
// 00000000 (restart at apple), 2a000000 (restart at banana), 56000080 (restart at mango)
|
|
// 03000000 (number of restart, i.e., 3). The restart at mango has 1 in the most significant
|
|
// bit of the uint32, so the last byte in the little endian encoding is \x80.
|
|
"\x00\x00\x00\x00\x2a\x00\x00\x00\x56\x00\x00\x80\x03\x00\x00\x00")
|
|
if !bytes.Equal(expected, block) {
|
|
t.Fatalf("expected\n%x\nfound\n%x", expected, block)
|
|
}
|
|
}
|
|
|
|
func testBlockCleared(t *testing.T, w, b *blockWriter) {
|
|
require.Equal(t, w.restartInterval, b.restartInterval)
|
|
require.Equal(t, w.nEntries, b.nEntries)
|
|
require.Equal(t, w.nextRestart, b.nextRestart)
|
|
require.Equal(t, len(w.buf), len(b.buf))
|
|
require.Equal(t, len(w.restarts), len(b.restarts))
|
|
require.Equal(t, len(w.curKey), len(b.curKey))
|
|
require.Equal(t, len(w.prevKey), len(b.prevKey))
|
|
require.Equal(t, len(w.curValue), len(b.curValue))
|
|
require.Equal(t, w.tmp, b.tmp)
|
|
|
|
// Make sure that we didn't lose the allocated byte slices.
|
|
require.True(t, cap(w.buf) > 0 && cap(b.buf) == 0)
|
|
require.True(t, cap(w.restarts) > 0 && cap(b.restarts) == 0)
|
|
require.True(t, cap(w.curKey) > 0 && cap(b.curKey) == 0)
|
|
require.True(t, cap(w.prevKey) > 0 && cap(b.prevKey) == 0)
|
|
require.True(t, cap(w.curValue) > 0 && cap(b.curValue) == 0)
|
|
}
|
|
|
|
func TestBlockClear(t *testing.T) {
|
|
w := blockWriter{restartInterval: 16}
|
|
w.add(ikey("apple"), nil)
|
|
w.add(ikey("apricot"), nil)
|
|
w.add(ikey("banana"), nil)
|
|
|
|
w.clear()
|
|
|
|
// Once a block is cleared, we expect its fields to be cleared, but we expect
|
|
// it to keep its allocated byte slices.
|
|
b := blockWriter{}
|
|
testBlockCleared(t, &w, &b)
|
|
}
|
|
|
|
func TestInvalidInternalKeyDecoding(t *testing.T) {
|
|
// Invalid keys since they don't have an 8 byte trailer.
|
|
testCases := []string{
|
|
"",
|
|
"\x01\x02\x03\x04\x05\x06\x07",
|
|
"foo",
|
|
}
|
|
for _, tc := range testCases {
|
|
i := blockIter{}
|
|
i.decodeInternalKey([]byte(tc))
|
|
require.Nil(t, i.ikey.UserKey)
|
|
require.Equal(t, uint64(InternalKeyKindInvalid), i.ikey.Trailer)
|
|
}
|
|
}
|
|
|
|
func TestBlockIter(t *testing.T) {
|
|
// k is a block that maps three keys "apple", "apricot", "banana" to empty strings.
|
|
k := block([]byte(
|
|
"\x00\x05\x00apple" +
|
|
"\x02\x05\x00ricot" +
|
|
"\x00\x06\x00banana" +
|
|
"\x00\x00\x00\x00\x01\x00\x00\x00"))
|
|
var testcases = []struct {
|
|
index int
|
|
key string
|
|
}{
|
|
{0, ""},
|
|
{0, "a"},
|
|
{0, "aaaaaaaaaaaaaaa"},
|
|
{0, "app"},
|
|
{0, "apple"},
|
|
{1, "appliance"},
|
|
{1, "apricos"},
|
|
{1, "apricot"},
|
|
{2, "azzzzzzzzzzzzzz"},
|
|
{2, "b"},
|
|
{2, "banan"},
|
|
{2, "banana"},
|
|
{3, "banana\x00"},
|
|
{3, "c"},
|
|
}
|
|
for _, tc := range testcases {
|
|
i, err := newRawBlockIter(bytes.Compare, k)
|
|
require.NoError(t, err)
|
|
i.SeekGE([]byte(tc.key))
|
|
for j, keyWant := range []string{"apple", "apricot", "banana"}[tc.index:] {
|
|
if !i.Valid() {
|
|
t.Fatalf("key=%q, index=%d, j=%d: Valid got false, keyWant true", tc.key, tc.index, j)
|
|
}
|
|
if keyGot := string(i.Key().UserKey); keyGot != keyWant {
|
|
t.Fatalf("key=%q, index=%d, j=%d: got %q, keyWant %q", tc.key, tc.index, j, keyGot, keyWant)
|
|
}
|
|
i.Next()
|
|
}
|
|
if i.Valid() {
|
|
t.Fatalf("key=%q, index=%d: Valid got true, keyWant false", tc.key, tc.index)
|
|
}
|
|
if err := i.Close(); err != nil {
|
|
t.Fatalf("key=%q, index=%d: got err=%v", tc.key, tc.index, err)
|
|
}
|
|
}
|
|
|
|
{
|
|
i, err := newRawBlockIter(bytes.Compare, k)
|
|
require.NoError(t, err)
|
|
i.Last()
|
|
for j, keyWant := range []string{"banana", "apricot", "apple"} {
|
|
if !i.Valid() {
|
|
t.Fatalf("j=%d: Valid got false, want true", j)
|
|
}
|
|
if keyGot := string(i.Key().UserKey); keyGot != keyWant {
|
|
t.Fatalf("j=%d: got %q, want %q", j, keyGot, keyWant)
|
|
}
|
|
i.Prev()
|
|
}
|
|
if i.Valid() {
|
|
t.Fatalf("Valid got true, want false")
|
|
}
|
|
if err := i.Close(); err != nil {
|
|
t.Fatalf("got err=%v", err)
|
|
}
|
|
}
|
|
}
|
|
|
|
func TestBlockIter2(t *testing.T) {
|
|
makeIkey := func(s string) InternalKey {
|
|
j := strings.Index(s, ":")
|
|
seqNum, err := strconv.Atoi(s[j+1:])
|
|
if err != nil {
|
|
panic(err)
|
|
}
|
|
return base.MakeInternalKey([]byte(s[:j]), uint64(seqNum), InternalKeyKindSet)
|
|
}
|
|
|
|
var block []byte
|
|
|
|
for _, r := range []int{1, 2, 3, 4} {
|
|
t.Run(fmt.Sprintf("restart=%d", r), func(t *testing.T) {
|
|
datadriven.RunTest(t, "testdata/block", func(t *testing.T, d *datadriven.TestData) string {
|
|
switch d.Cmd {
|
|
case "build":
|
|
w := &blockWriter{restartInterval: r}
|
|
for _, e := range strings.Split(strings.TrimSpace(d.Input), ",") {
|
|
w.add(makeIkey(e), nil)
|
|
}
|
|
block = w.finish()
|
|
return ""
|
|
|
|
case "iter":
|
|
iter, err := newBlockIter(bytes.Compare, block)
|
|
if err != nil {
|
|
return err.Error()
|
|
}
|
|
|
|
iter.globalSeqNum, err = scanGlobalSeqNum(d)
|
|
if err != nil {
|
|
return err.Error()
|
|
}
|
|
return itertest.RunInternalIterCmd(t, d, iter, itertest.Condensed)
|
|
|
|
default:
|
|
return fmt.Sprintf("unknown command: %s", d.Cmd)
|
|
}
|
|
})
|
|
})
|
|
}
|
|
}
|
|
|
|
func TestBlockIterKeyStability(t *testing.T) {
|
|
w := &blockWriter{restartInterval: 1}
|
|
expected := [][]byte{
|
|
[]byte("apple"),
|
|
[]byte("apricot"),
|
|
[]byte("banana"),
|
|
}
|
|
for i := range expected {
|
|
w.add(InternalKey{UserKey: expected[i]}, nil)
|
|
}
|
|
block := w.finish()
|
|
|
|
i, err := newBlockIter(bytes.Compare, block)
|
|
require.NoError(t, err)
|
|
|
|
// Check that the supplied slice resides within the bounds of the block.
|
|
check := func(v []byte) {
|
|
t.Helper()
|
|
begin := unsafe.Pointer(&v[0])
|
|
end := unsafe.Pointer(uintptr(begin) + uintptr(len(v)))
|
|
blockBegin := unsafe.Pointer(&block[0])
|
|
blockEnd := unsafe.Pointer(uintptr(blockBegin) + uintptr(len(block)))
|
|
if uintptr(begin) < uintptr(blockBegin) || uintptr(end) > uintptr(blockEnd) {
|
|
t.Fatalf("key %p-%p resides outside of block %p-%p", begin, end, blockBegin, blockEnd)
|
|
}
|
|
}
|
|
|
|
// Check that various means of iterating over the data match our expected
|
|
// values. Note that this is only guaranteed because of the usage of a
|
|
// restart-interval of 1 so that prefix compression was not performed.
|
|
for j := range expected {
|
|
keys := [][]byte{}
|
|
for key, _ := i.SeekGE(expected[j], base.SeekGEFlagsNone); key != nil; key, _ = i.Next() {
|
|
check(key.UserKey)
|
|
keys = append(keys, key.UserKey)
|
|
}
|
|
require.EqualValues(t, expected[j:], keys)
|
|
}
|
|
|
|
for j := range expected {
|
|
keys := [][]byte{}
|
|
for key, _ := i.SeekLT(expected[j], base.SeekLTFlagsNone); key != nil; key, _ = i.Prev() {
|
|
check(key.UserKey)
|
|
keys = append(keys, key.UserKey)
|
|
}
|
|
for i, j := 0, len(keys)-1; i < j; i, j = i+1, j-1 {
|
|
keys[i], keys[j] = keys[j], keys[i]
|
|
}
|
|
require.EqualValues(t, expected[:j], keys)
|
|
}
|
|
}
|
|
|
|
// Regression test for a bug in blockIter.Next where it was failing to handle
|
|
// the case where it is switching from reverse to forward iteration. When that
|
|
// switch occurs we need to populate blockIter.fullKey so that prefix
|
|
// decompression works properly.
|
|
func TestBlockIterReverseDirections(t *testing.T) {
|
|
w := &blockWriter{restartInterval: 4}
|
|
keys := [][]byte{
|
|
[]byte("apple0"),
|
|
[]byte("apple1"),
|
|
[]byte("apple2"),
|
|
[]byte("banana"),
|
|
[]byte("carrot"),
|
|
}
|
|
for i := range keys {
|
|
w.add(InternalKey{UserKey: keys[i]}, nil)
|
|
}
|
|
block := w.finish()
|
|
|
|
for targetPos := 0; targetPos < w.restartInterval; targetPos++ {
|
|
t.Run("", func(t *testing.T) {
|
|
i, err := newBlockIter(bytes.Compare, block)
|
|
require.NoError(t, err)
|
|
|
|
pos := 3
|
|
if key, _ := i.SeekLT([]byte("carrot"), base.SeekLTFlagsNone); !bytes.Equal(keys[pos], key.UserKey) {
|
|
t.Fatalf("expected %s, but found %s", keys[pos], key.UserKey)
|
|
}
|
|
for pos > targetPos {
|
|
pos--
|
|
if key, _ := i.Prev(); !bytes.Equal(keys[pos], key.UserKey) {
|
|
t.Fatalf("expected %s, but found %s", keys[pos], key.UserKey)
|
|
}
|
|
}
|
|
pos++
|
|
if key, _ := i.Next(); !bytes.Equal(keys[pos], key.UserKey) {
|
|
t.Fatalf("expected %s, but found %s", keys[pos], key.UserKey)
|
|
}
|
|
})
|
|
}
|
|
}
|
|
|
|
func BenchmarkBlockIterSeekGE(b *testing.B) {
|
|
const blockSize = 32 << 10
|
|
|
|
for _, restartInterval := range []int{16} {
|
|
b.Run(fmt.Sprintf("restart=%d", restartInterval),
|
|
func(b *testing.B) {
|
|
w := &blockWriter{
|
|
restartInterval: restartInterval,
|
|
}
|
|
|
|
var ikey InternalKey
|
|
var keys [][]byte
|
|
for i := 0; w.estimatedSize() < blockSize; i++ {
|
|
key := []byte(fmt.Sprintf("%05d", i))
|
|
keys = append(keys, key)
|
|
ikey.UserKey = key
|
|
w.add(ikey, nil)
|
|
}
|
|
|
|
it, err := newBlockIter(bytes.Compare, w.finish())
|
|
if err != nil {
|
|
b.Fatal(err)
|
|
}
|
|
rng := rand.New(rand.NewSource(uint64(time.Now().UnixNano())))
|
|
|
|
b.ResetTimer()
|
|
for i := 0; i < b.N; i++ {
|
|
k := keys[rng.Intn(len(keys))]
|
|
it.SeekGE(k, base.SeekGEFlagsNone)
|
|
if testing.Verbose() {
|
|
if !it.valid() {
|
|
b.Fatal("expected to find key")
|
|
}
|
|
if !bytes.Equal(k, it.Key().UserKey) {
|
|
b.Fatalf("expected %s, but found %s", k, it.Key().UserKey)
|
|
}
|
|
}
|
|
}
|
|
})
|
|
}
|
|
}
|
|
|
|
func BenchmarkBlockIterSeekLT(b *testing.B) {
|
|
const blockSize = 32 << 10
|
|
|
|
for _, restartInterval := range []int{16} {
|
|
b.Run(fmt.Sprintf("restart=%d", restartInterval),
|
|
func(b *testing.B) {
|
|
w := &blockWriter{
|
|
restartInterval: restartInterval,
|
|
}
|
|
|
|
var ikey InternalKey
|
|
var keys [][]byte
|
|
for i := 0; w.estimatedSize() < blockSize; i++ {
|
|
key := []byte(fmt.Sprintf("%05d", i))
|
|
keys = append(keys, key)
|
|
ikey.UserKey = key
|
|
w.add(ikey, nil)
|
|
}
|
|
|
|
it, err := newBlockIter(bytes.Compare, w.finish())
|
|
if err != nil {
|
|
b.Fatal(err)
|
|
}
|
|
rng := rand.New(rand.NewSource(uint64(time.Now().UnixNano())))
|
|
|
|
b.ResetTimer()
|
|
for i := 0; i < b.N; i++ {
|
|
j := rng.Intn(len(keys))
|
|
it.SeekLT(keys[j], base.SeekLTFlagsNone)
|
|
if testing.Verbose() {
|
|
if j == 0 {
|
|
if it.valid() {
|
|
b.Fatal("unexpected key")
|
|
}
|
|
} else {
|
|
if !it.valid() {
|
|
b.Fatal("expected to find key")
|
|
}
|
|
k := keys[j-1]
|
|
if !bytes.Equal(k, it.Key().UserKey) {
|
|
b.Fatalf("expected %s, but found %s", k, it.Key().UserKey)
|
|
}
|
|
}
|
|
}
|
|
}
|
|
})
|
|
}
|
|
}
|
|
|
|
func BenchmarkBlockIterNext(b *testing.B) {
|
|
const blockSize = 32 << 10
|
|
|
|
for _, restartInterval := range []int{16} {
|
|
b.Run(fmt.Sprintf("restart=%d", restartInterval),
|
|
func(b *testing.B) {
|
|
w := &blockWriter{
|
|
restartInterval: restartInterval,
|
|
}
|
|
|
|
var ikey InternalKey
|
|
for i := 0; w.estimatedSize() < blockSize; i++ {
|
|
ikey.UserKey = []byte(fmt.Sprintf("%05d", i))
|
|
w.add(ikey, nil)
|
|
}
|
|
|
|
it, err := newBlockIter(bytes.Compare, w.finish())
|
|
if err != nil {
|
|
b.Fatal(err)
|
|
}
|
|
|
|
b.ResetTimer()
|
|
for i := 0; i < b.N; i++ {
|
|
if !it.valid() {
|
|
it.First()
|
|
}
|
|
it.Next()
|
|
}
|
|
})
|
|
}
|
|
}
|
|
|
|
func BenchmarkBlockIterPrev(b *testing.B) {
|
|
const blockSize = 32 << 10
|
|
|
|
for _, restartInterval := range []int{16} {
|
|
b.Run(fmt.Sprintf("restart=%d", restartInterval),
|
|
func(b *testing.B) {
|
|
w := &blockWriter{
|
|
restartInterval: restartInterval,
|
|
}
|
|
|
|
var ikey InternalKey
|
|
for i := 0; w.estimatedSize() < blockSize; i++ {
|
|
ikey.UserKey = []byte(fmt.Sprintf("%05d", i))
|
|
w.add(ikey, nil)
|
|
}
|
|
|
|
it, err := newBlockIter(bytes.Compare, w.finish())
|
|
if err != nil {
|
|
b.Fatal(err)
|
|
}
|
|
|
|
b.ResetTimer()
|
|
for i := 0; i < b.N; i++ {
|
|
if !it.valid() {
|
|
it.Last()
|
|
}
|
|
it.Prev()
|
|
}
|
|
})
|
|
}
|
|
}
|