mirror of
https://source.quilibrium.com/quilibrium/ceremonyclient.git
synced 2024-11-14 04:05:17 +00:00
540 lines
14 KiB
Go
540 lines
14 KiB
Go
/*
|
|
* Copyright 2017 Dgraph Labs, Inc. and Contributors
|
|
* Modifications copyright (C) 2017 Andy Kimball and Contributors
|
|
*
|
|
* Licensed under the Apache License, Version 2.0 (the "License");
|
|
* you may not use this file except in compliance with the License.
|
|
* You may obtain a copy of the License at
|
|
*
|
|
* http://www.apache.org/licenses/LICENSE-2.0
|
|
*
|
|
* Unless required by applicable law or agreed to in writing, software
|
|
* distributed under the License is distributed on an "AS IS" BASIS,
|
|
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
|
* See the License for the specific language governing permissions and
|
|
* limitations under the License.
|
|
*/
|
|
|
|
package batchskl
|
|
|
|
import (
|
|
"bytes"
|
|
"encoding/binary"
|
|
"fmt"
|
|
"testing"
|
|
"time"
|
|
|
|
"github.com/cockroachdb/errors"
|
|
"github.com/cockroachdb/pebble/internal/base"
|
|
"github.com/stretchr/testify/require"
|
|
"golang.org/x/exp/rand"
|
|
)
|
|
|
|
// iterAdapter adapts the new Iterator API which returns the key and value from
|
|
// positioning methods (Seek*, First, Last, Next, Prev) to the old API which
|
|
// returned a boolean corresponding to Valid. Only used by test code.
|
|
type iterAdapter struct {
|
|
Iterator
|
|
}
|
|
|
|
func (i *iterAdapter) verify(key *base.InternalKey) bool {
|
|
valid := key != nil
|
|
if valid != i.Valid() {
|
|
panic(fmt.Sprintf("inconsistent valid: %t != %t", valid, i.Valid()))
|
|
}
|
|
if valid {
|
|
if base.InternalCompare(bytes.Compare, *key, i.Key()) != 0 {
|
|
panic(fmt.Sprintf("inconsistent key: %s != %s", *key, i.Key()))
|
|
}
|
|
}
|
|
return valid
|
|
}
|
|
|
|
func (i *iterAdapter) SeekGE(key []byte) bool {
|
|
return i.verify(i.Iterator.SeekGE(key, base.SeekGEFlagsNone))
|
|
}
|
|
|
|
func (i *iterAdapter) SeekLT(key []byte) bool {
|
|
return i.verify(i.Iterator.SeekLT(key))
|
|
}
|
|
|
|
func (i *iterAdapter) First() bool {
|
|
return i.verify(i.Iterator.First())
|
|
}
|
|
|
|
func (i *iterAdapter) Last() bool {
|
|
return i.verify(i.Iterator.Last())
|
|
}
|
|
|
|
func (i *iterAdapter) Next() bool {
|
|
return i.verify(i.Iterator.Next())
|
|
}
|
|
|
|
func (i *iterAdapter) Prev() bool {
|
|
return i.verify(i.Iterator.Prev())
|
|
}
|
|
|
|
func (i *iterAdapter) Key() base.InternalKey {
|
|
return *i.Iterator.Key()
|
|
}
|
|
|
|
// length iterates over skiplist to give exact size.
|
|
func length(s *Skiplist) int {
|
|
count := 0
|
|
|
|
it := iterAdapter{s.NewIter(nil, nil)}
|
|
for valid := it.First(); valid; valid = it.Next() {
|
|
count++
|
|
}
|
|
|
|
return count
|
|
}
|
|
|
|
// length iterates over skiplist in reverse order to give exact size.
|
|
func lengthRev(s *Skiplist) int {
|
|
count := 0
|
|
|
|
it := iterAdapter{s.NewIter(nil, nil)}
|
|
for valid := it.Last(); valid; valid = it.Prev() {
|
|
count++
|
|
}
|
|
|
|
return count
|
|
}
|
|
|
|
func makeKey(s string) []byte {
|
|
return []byte(s)
|
|
}
|
|
|
|
type testStorage struct {
|
|
data []byte
|
|
}
|
|
|
|
func (d *testStorage) add(key string) uint32 {
|
|
offset := uint32(len(d.data))
|
|
d.data = append(d.data, uint8(base.InternalKeyKindSet))
|
|
var buf [binary.MaxVarintLen64]byte
|
|
n := binary.PutUvarint(buf[:], uint64(len(key)))
|
|
d.data = append(d.data, buf[:n]...)
|
|
d.data = append(d.data, key...)
|
|
return offset
|
|
}
|
|
|
|
func (d *testStorage) addBytes(key []byte) uint32 {
|
|
offset := uint32(len(d.data))
|
|
d.data = append(d.data, uint8(base.InternalKeyKindSet))
|
|
var buf [binary.MaxVarintLen64]byte
|
|
n := binary.PutUvarint(buf[:], uint64(len(key)))
|
|
d.data = append(d.data, buf[:n]...)
|
|
d.data = append(d.data, key...)
|
|
return offset
|
|
}
|
|
|
|
func newTestSkiplist(storage *testStorage) *Skiplist {
|
|
return NewSkiplist(&storage.data, base.DefaultComparer.Compare,
|
|
base.DefaultComparer.AbbreviatedKey)
|
|
}
|
|
|
|
func TestEmpty(t *testing.T) {
|
|
key := makeKey("aaa")
|
|
l := newTestSkiplist(&testStorage{})
|
|
it := iterAdapter{l.NewIter(nil, nil)}
|
|
|
|
require.False(t, it.Valid())
|
|
|
|
it.First()
|
|
require.False(t, it.Valid())
|
|
|
|
it.Last()
|
|
require.False(t, it.Valid())
|
|
|
|
require.False(t, it.SeekGE(key))
|
|
require.False(t, it.Valid())
|
|
}
|
|
|
|
// TestBasic tests seeks and adds.
|
|
func TestBasic(t *testing.T) {
|
|
d := &testStorage{}
|
|
l := newTestSkiplist(d)
|
|
it := iterAdapter{l.NewIter(nil, nil)}
|
|
|
|
// Try adding values.
|
|
require.Nil(t, l.Add(d.add("key1")))
|
|
require.Nil(t, l.Add(d.add("key2")))
|
|
require.Nil(t, l.Add(d.add("key3")))
|
|
|
|
require.True(t, it.SeekGE(makeKey("key")))
|
|
require.EqualValues(t, "key1", it.Key().UserKey)
|
|
|
|
require.True(t, it.SeekGE(makeKey("key1")))
|
|
require.EqualValues(t, "key1", it.Key().UserKey)
|
|
|
|
require.True(t, it.SeekGE(makeKey("key2")))
|
|
require.EqualValues(t, "key2", it.Key().UserKey)
|
|
|
|
require.True(t, it.SeekGE(makeKey("key3")))
|
|
require.EqualValues(t, "key3", it.Key().UserKey)
|
|
|
|
require.True(t, it.SeekGE(makeKey("key2")))
|
|
require.True(t, it.SeekGE(makeKey("key3")))
|
|
}
|
|
|
|
func TestSkiplistAdd(t *testing.T) {
|
|
d := &testStorage{}
|
|
l := newTestSkiplist(d)
|
|
it := iterAdapter{l.NewIter(nil, nil)}
|
|
|
|
// Add empty key.
|
|
require.Nil(t, l.Add(d.add("")))
|
|
require.EqualValues(t, []byte(nil), it.Key().UserKey)
|
|
require.True(t, it.First())
|
|
require.EqualValues(t, []byte{}, it.Key().UserKey)
|
|
|
|
// Add to empty list.
|
|
require.Nil(t, l.Add(d.add("00002")))
|
|
require.True(t, it.SeekGE(makeKey("00002")))
|
|
require.EqualValues(t, "00002", it.Key().UserKey)
|
|
|
|
// Add first element in non-empty list.
|
|
require.Nil(t, l.Add(d.add("00001")))
|
|
require.True(t, it.SeekGE(makeKey("00001")))
|
|
require.EqualValues(t, "00001", it.Key().UserKey)
|
|
|
|
// Add last element in non-empty list.
|
|
require.Nil(t, l.Add(d.add("00004")))
|
|
require.True(t, it.SeekGE(makeKey("00004")))
|
|
require.EqualValues(t, "00004", it.Key().UserKey)
|
|
|
|
// Add element in middle of list.
|
|
require.Nil(t, l.Add(d.add("00003")))
|
|
require.True(t, it.SeekGE(makeKey("00003")))
|
|
require.EqualValues(t, "00003", it.Key().UserKey)
|
|
|
|
// Try to add element that already exists.
|
|
require.Nil(t, l.Add(d.add("00002")))
|
|
require.Equal(t, 6, length(l))
|
|
require.Equal(t, 6, lengthRev(l))
|
|
}
|
|
|
|
func TestSkiplistAdd_Overflow(t *testing.T) {
|
|
// Regression test for cockroachdb/pebble#1258. The length of the nodes buffer
|
|
// cannot exceed the maximum allowable size.
|
|
d := &testStorage{}
|
|
l := newTestSkiplist(d)
|
|
|
|
// Simulate a full nodes slice. This speeds up the test significantly, as
|
|
// opposed to adding data to the list.
|
|
l.nodes = make([]byte, maxNodesSize)
|
|
|
|
// Adding a new node to the list would overflow the nodes slice. Note that it
|
|
// is the size of a new node struct that is relevant here, rather than the
|
|
// size of the data being added to the list.
|
|
err := l.Add(d.add("too much!"))
|
|
require.Error(t, err)
|
|
require.True(t, errors.Is(err, ErrTooManyRecords))
|
|
}
|
|
|
|
// TestIteratorNext tests a basic iteration over all nodes from the beginning.
|
|
func TestIteratorNext(t *testing.T) {
|
|
const n = 100
|
|
d := &testStorage{}
|
|
l := newTestSkiplist(d)
|
|
it := iterAdapter{l.NewIter(nil, nil)}
|
|
|
|
require.False(t, it.Valid())
|
|
|
|
it.First()
|
|
require.False(t, it.Valid())
|
|
|
|
for i := n - 1; i >= 0; i-- {
|
|
require.Nil(t, l.Add(d.add(fmt.Sprintf("%05d", i))))
|
|
}
|
|
|
|
it.First()
|
|
for i := 0; i < n; i++ {
|
|
require.True(t, it.Valid())
|
|
require.EqualValues(t, fmt.Sprintf("%05d", i), it.Key().UserKey)
|
|
it.Next()
|
|
}
|
|
require.False(t, it.Valid())
|
|
}
|
|
|
|
// // TestIteratorPrev tests a basic iteration over all nodes from the end.
|
|
func TestIteratorPrev(t *testing.T) {
|
|
const n = 100
|
|
d := &testStorage{}
|
|
l := newTestSkiplist(d)
|
|
it := iterAdapter{l.NewIter(nil, nil)}
|
|
|
|
require.False(t, it.Valid())
|
|
|
|
it.Last()
|
|
require.False(t, it.Valid())
|
|
|
|
for i := 0; i < n; i++ {
|
|
l.Add(d.add(fmt.Sprintf("%05d", i)))
|
|
}
|
|
|
|
it.Last()
|
|
for i := n - 1; i >= 0; i-- {
|
|
require.True(t, it.Valid())
|
|
require.EqualValues(t, fmt.Sprintf("%05d", i), string(it.Key().UserKey))
|
|
it.Prev()
|
|
}
|
|
require.False(t, it.Valid())
|
|
}
|
|
|
|
func TestIteratorSeekGE(t *testing.T) {
|
|
const n = 1000
|
|
d := &testStorage{}
|
|
l := newTestSkiplist(d)
|
|
it := iterAdapter{l.NewIter(nil, nil)}
|
|
|
|
require.False(t, it.Valid())
|
|
it.First()
|
|
require.False(t, it.Valid())
|
|
// 1000, 1010, 1020, ..., 1990.
|
|
for i := n - 1; i >= 0; i-- {
|
|
require.Nil(t, l.Add(d.add(fmt.Sprintf("%05d", i*10+1000))))
|
|
}
|
|
|
|
require.True(t, it.SeekGE(makeKey("")))
|
|
require.True(t, it.Valid())
|
|
require.EqualValues(t, "01000", it.Key().UserKey)
|
|
|
|
require.True(t, it.SeekGE(makeKey("01000")))
|
|
require.True(t, it.Valid())
|
|
require.EqualValues(t, "01000", it.Key().UserKey)
|
|
|
|
require.True(t, it.SeekGE(makeKey("01005")))
|
|
require.True(t, it.Valid())
|
|
require.EqualValues(t, "01010", it.Key().UserKey)
|
|
|
|
require.True(t, it.SeekGE(makeKey("01010")))
|
|
require.True(t, it.Valid())
|
|
require.EqualValues(t, "01010", it.Key().UserKey)
|
|
|
|
require.False(t, it.SeekGE(makeKey("99999")))
|
|
require.False(t, it.Valid())
|
|
|
|
// Test seek for empty key.
|
|
require.Nil(t, l.Add(d.add("")))
|
|
require.True(t, it.SeekGE([]byte{}))
|
|
require.True(t, it.Valid())
|
|
|
|
require.True(t, it.SeekGE(makeKey("")))
|
|
require.True(t, it.Valid())
|
|
}
|
|
|
|
func TestIteratorSeekLT(t *testing.T) {
|
|
const n = 100
|
|
d := &testStorage{}
|
|
l := newTestSkiplist(d)
|
|
it := iterAdapter{l.NewIter(nil, nil)}
|
|
|
|
require.False(t, it.Valid())
|
|
it.First()
|
|
require.False(t, it.Valid())
|
|
// 1000, 1010, 1020, ..., 1990.
|
|
for i := n - 1; i >= 0; i-- {
|
|
require.Nil(t, l.Add(d.add(fmt.Sprintf("%05d", i*10+1000))))
|
|
}
|
|
|
|
require.False(t, it.SeekLT(makeKey("")))
|
|
require.False(t, it.Valid())
|
|
|
|
require.False(t, it.SeekLT(makeKey("01000")))
|
|
require.False(t, it.Valid())
|
|
|
|
require.True(t, it.SeekLT(makeKey("01001")))
|
|
require.EqualValues(t, "01000", it.Key().UserKey)
|
|
require.True(t, it.Valid())
|
|
|
|
require.True(t, it.SeekLT(makeKey("01005")))
|
|
require.EqualValues(t, "01000", it.Key().UserKey)
|
|
require.True(t, it.Valid())
|
|
|
|
require.True(t, it.SeekLT(makeKey("01991")))
|
|
require.EqualValues(t, "01990", it.Key().UserKey)
|
|
require.True(t, it.Valid())
|
|
|
|
require.True(t, it.SeekLT(makeKey("99999")))
|
|
require.True(t, it.Valid())
|
|
require.EqualValues(t, "01990", it.Key().UserKey)
|
|
|
|
// Test seek for empty key.
|
|
require.Nil(t, l.Add(d.add("")))
|
|
require.False(t, it.SeekLT([]byte{}))
|
|
require.False(t, it.Valid())
|
|
require.True(t, it.SeekLT(makeKey("\x01")))
|
|
require.True(t, it.Valid())
|
|
require.EqualValues(t, "", it.Key().UserKey)
|
|
}
|
|
|
|
// TODO(peter): test First and Last.
|
|
func TestIteratorBounds(t *testing.T) {
|
|
d := &testStorage{}
|
|
l := newTestSkiplist(d)
|
|
for i := 1; i < 10; i++ {
|
|
require.NoError(t, l.Add(d.add(fmt.Sprintf("%05d", i))))
|
|
}
|
|
|
|
it := iterAdapter{l.NewIter(makeKey("00003"), makeKey("00007"))}
|
|
|
|
// SeekGE within the lower and upper bound succeeds.
|
|
for i := 3; i <= 6; i++ {
|
|
key := makeKey(fmt.Sprintf("%05d", i))
|
|
require.True(t, it.SeekGE(key))
|
|
require.EqualValues(t, string(key), string(it.Key().UserKey))
|
|
}
|
|
|
|
// SeekGE before the lower bound still succeeds (only the upper bound is
|
|
// checked).
|
|
for i := 1; i < 3; i++ {
|
|
key := makeKey(fmt.Sprintf("%05d", i))
|
|
require.True(t, it.SeekGE(key))
|
|
require.EqualValues(t, string(key), string(it.Key().UserKey))
|
|
}
|
|
|
|
// SeekGE beyond the upper bound fails.
|
|
for i := 7; i < 10; i++ {
|
|
key := makeKey(fmt.Sprintf("%05d", i))
|
|
require.False(t, it.SeekGE(key))
|
|
}
|
|
|
|
require.True(t, it.SeekGE(makeKey("00006")))
|
|
require.EqualValues(t, "00006", it.Key().UserKey)
|
|
|
|
// Next into the upper bound fails.
|
|
require.False(t, it.Next())
|
|
|
|
// SeekLT within the lower and upper bound succeeds.
|
|
for i := 4; i <= 7; i++ {
|
|
key := makeKey(fmt.Sprintf("%05d", i))
|
|
require.True(t, it.SeekLT(key))
|
|
require.EqualValues(t, fmt.Sprintf("%05d", i-1), string(it.Key().UserKey))
|
|
}
|
|
|
|
// SeekLT beyond the upper bound still succeeds (only the lower bound is
|
|
// checked).
|
|
for i := 8; i < 9; i++ {
|
|
key := makeKey(fmt.Sprintf("%05d", i))
|
|
require.True(t, it.SeekLT(key))
|
|
require.EqualValues(t, fmt.Sprintf("%05d", i-1), string(it.Key().UserKey))
|
|
}
|
|
|
|
// SeekLT before the lower bound fails.
|
|
for i := 1; i < 4; i++ {
|
|
key := makeKey(fmt.Sprintf("%05d", i))
|
|
require.False(t, it.SeekLT(key))
|
|
}
|
|
|
|
require.True(t, it.SeekLT(makeKey("00004")))
|
|
require.EqualValues(t, "00003", it.Key().UserKey)
|
|
|
|
// Prev into the lower bound fails.
|
|
require.False(t, it.Prev())
|
|
}
|
|
|
|
func randomKey(rng *rand.Rand, b []byte) []byte {
|
|
key := rng.Uint32()
|
|
key2 := rng.Uint32()
|
|
binary.LittleEndian.PutUint32(b, key)
|
|
binary.LittleEndian.PutUint32(b[4:], key2)
|
|
return b
|
|
}
|
|
|
|
// Standard test. Some fraction is read. Some fraction is write. Writes have
|
|
// to go through mutex lock.
|
|
func BenchmarkReadWrite(b *testing.B) {
|
|
for i := 0; i <= 10; i++ {
|
|
readFrac := float32(i) / 10.0
|
|
b.Run(fmt.Sprintf("frac_%d", i*10), func(b *testing.B) {
|
|
var buf [8]byte
|
|
d := &testStorage{
|
|
data: make([]byte, 0, b.N*10),
|
|
}
|
|
l := newTestSkiplist(d)
|
|
it := l.NewIter(nil, nil)
|
|
rng := rand.New(rand.NewSource(uint64(time.Now().UnixNano())))
|
|
|
|
b.ResetTimer()
|
|
for i := 0; i < b.N; i++ {
|
|
key := randomKey(rng, buf[:])
|
|
if rng.Float32() < readFrac {
|
|
_ = it.SeekGE(key, base.SeekGEFlagsNone)
|
|
} else {
|
|
offset := d.addBytes(buf[:])
|
|
_ = l.Add(offset)
|
|
}
|
|
}
|
|
b.StopTimer()
|
|
})
|
|
}
|
|
}
|
|
|
|
func BenchmarkOrderedWrite(b *testing.B) {
|
|
var buf [8]byte
|
|
d := &testStorage{
|
|
data: make([]byte, 0, b.N*10),
|
|
}
|
|
l := newTestSkiplist(d)
|
|
|
|
b.ResetTimer()
|
|
for i := 0; i < b.N; i++ {
|
|
binary.BigEndian.PutUint64(buf[:], uint64(i))
|
|
offset := d.addBytes(buf[:])
|
|
_ = l.Add(offset)
|
|
}
|
|
}
|
|
|
|
func BenchmarkIterNext(b *testing.B) {
|
|
var buf [8]byte
|
|
d := &testStorage{
|
|
data: make([]byte, 0, 64<<10),
|
|
}
|
|
l := newTestSkiplist(d)
|
|
|
|
rng := rand.New(rand.NewSource(uint64(time.Now().UnixNano())))
|
|
for len(d.data)+20 < cap(d.data) {
|
|
key := randomKey(rng, buf[:])
|
|
offset := d.addBytes(key)
|
|
err := l.Add(offset)
|
|
require.NoError(b, err)
|
|
}
|
|
|
|
it := l.NewIter(nil, nil)
|
|
b.ResetTimer()
|
|
for i := 0; i < b.N; i++ {
|
|
if !it.Valid() {
|
|
it.First()
|
|
}
|
|
it.Next()
|
|
}
|
|
}
|
|
|
|
func BenchmarkIterPrev(b *testing.B) {
|
|
var buf [8]byte
|
|
d := &testStorage{
|
|
data: make([]byte, 0, 64<<10),
|
|
}
|
|
l := newTestSkiplist(d)
|
|
|
|
rng := rand.New(rand.NewSource(uint64(time.Now().UnixNano())))
|
|
for len(d.data)+20 < cap(d.data) {
|
|
key := randomKey(rng, buf[:])
|
|
offset := d.addBytes(key)
|
|
err := l.Add(offset)
|
|
require.NoError(b, err)
|
|
}
|
|
|
|
it := l.NewIter(nil, nil)
|
|
b.ResetTimer()
|
|
for i := 0; i < b.N; i++ {
|
|
if !it.Valid() {
|
|
it.Last()
|
|
}
|
|
it.Prev()
|
|
}
|
|
}
|