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bptree_test.go
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package lotusdb
import (
"bytes"
"os"
"path/filepath"
"strconv"
"testing"
"github.com/cespare/xxhash/v2"
"github.com/rosedblabs/wal"
"github.com/stretchr/testify/assert"
"github.com/stretchr/testify/require"
"go.etcd.io/bbolt"
)
func Test_openIndexBoltDB(t *testing.T) {
tests := []struct {
name string
options indexOptions
want *BPTree
wantErr bool
}{
{"normal_1",
indexOptions{
indexType: BTree,
dirPath: filepath.Join(os.TempDir(), "bptree-open-1"),
partitionNum: 1,
keyHashFunction: xxhash.Sum64,
},
&BPTree{
options: indexOptions{
indexType: BTree,
dirPath: filepath.Join(os.TempDir(), "bptree-open-1"),
partitionNum: 1,
keyHashFunction: xxhash.Sum64,
},
trees: make([]*bbolt.DB, 1),
},
false,
},
{"normal_3",
indexOptions{
indexType: BTree,
dirPath: filepath.Join(os.TempDir(), "bptree-open-3"),
partitionNum: 3,
keyHashFunction: xxhash.Sum64,
},
&BPTree{
options: indexOptions{
indexType: BTree,
dirPath: filepath.Join(os.TempDir(), "bptree-open-3"),
partitionNum: 3,
keyHashFunction: xxhash.Sum64,
},
trees: make([]*bbolt.DB, 3),
},
false,
},
}
for _, tt := range tests {
t.Run(tt.name, func(t *testing.T) {
err := os.MkdirAll(tt.options.dirPath, os.ModePerm)
require.NoError(t, err)
defer func() {
_ = os.RemoveAll(tt.options.dirPath)
}()
got, err := openBTreeIndex(tt.options)
if (err != nil) != tt.wantErr {
t.Errorf("openIndexBoltDB() error = %v, wantErr %v", err, tt.wantErr)
return
}
assert.Equal(t, tt.want.options.indexType, got.options.indexType)
assert.Equal(t, tt.want.options.dirPath, got.options.dirPath)
assert.Equal(t, tt.want.options.partitionNum, got.options.partitionNum)
assert.Equal(t, len(tt.want.trees), len(got.trees))
})
}
}
func TestBPTree_Get_1(t *testing.T) {
testbptreeGet(t, 1)
}
func TestBPTree_Get_3(t *testing.T) {
testbptreeGet(t, 3)
}
func testbptreeGet(t *testing.T, partitionNum int) {
options := indexOptions{
indexType: BTree,
dirPath: filepath.Join(os.TempDir(), "bptree-get-"+strconv.Itoa(partitionNum)),
partitionNum: partitionNum,
keyHashFunction: xxhash.Sum64,
}
err := os.MkdirAll(options.dirPath, os.ModePerm)
require.NoError(t, err)
defer func() {
_ = os.RemoveAll(options.dirPath)
}()
bt, err := openBTreeIndex(options)
require.NoError(t, err)
var keyPositions []*KeyPosition
keyPositions = append(keyPositions, &KeyPosition{
key: []byte("exist"),
partition: uint32(bt.options.getKeyPartition([]byte("exist"))),
position: &wal.ChunkPosition{},
})
err = bt.PutBatch(keyPositions)
require.NoError(t, err)
tests := []struct {
name string
key []byte
exist bool
wantErr bool
}{
{"nil", nil, false, true},
{"not-exist", []byte("not-exist"), false, false},
{"exist", []byte("exist"), true, false},
{"len(key)=0", []byte(""), false, true},
}
var got *KeyPosition
for _, tt := range tests {
t.Run(tt.name, func(t *testing.T) {
got, err = bt.Get(tt.key)
if (err != nil) != tt.wantErr {
t.Errorf("BPTree.Get() error = %v, wantErr %v", err, tt.wantErr)
return
}
assert.Equal(t, got != nil, tt.exist)
})
}
}
func TestBPTree_PutBatch_1(t *testing.T) {
testbptreePutbatch(t, 1)
}
func TestBPTree_PutBatch_3(t *testing.T) {
testbptreePutbatch(t, 3)
}
func testbptreePutbatch(t *testing.T, partitionNum int) {
options := indexOptions{
indexType: BTree,
dirPath: filepath.Join(os.TempDir(), "bptree-putBatch-"+strconv.Itoa(partitionNum)),
partitionNum: partitionNum,
keyHashFunction: xxhash.Sum64,
}
err := os.MkdirAll(options.dirPath, os.ModePerm)
require.NoError(t, err)
defer func() {
_ = os.RemoveAll(options.dirPath)
}()
bt, err := openBTreeIndex(options)
require.NoError(t, err)
var keyPositions []*KeyPosition
keyPositions = append(keyPositions, &KeyPosition{
key: nil,
partition: 0,
position: &wal.ChunkPosition{},
}, &KeyPosition{
key: []byte("normal"),
partition: uint32(bt.options.getKeyPartition([]byte("normal"))),
position: &wal.ChunkPosition{},
}, &KeyPosition{
key: []byte(""),
partition: uint32(bt.options.getKeyPartition([]byte(""))),
position: &wal.ChunkPosition{},
},
)
tests := []struct {
name string
positions []*KeyPosition
wantErr bool
}{
{"empty", keyPositions[:0], false},
{"nil-key", keyPositions[:1], true},
{"normal", keyPositions[1:2], false},
{"len(key)=0", keyPositions[2:3], true},
}
for _, tt := range tests {
t.Run(tt.name, func(t *testing.T) {
if err = bt.PutBatch(tt.positions); (err != nil) != tt.wantErr {
t.Errorf("BPTree.PutBatch() error = %v, wantErr %v", err, tt.wantErr)
}
})
}
}
func TestBPTree_DeleteBatch_1(t *testing.T) {
testbptreeDeletebatch(t, 1)
}
func TestBPTree_DeleteBatch_3(t *testing.T) {
testbptreeDeletebatch(t, 3)
}
func testbptreeDeletebatch(t *testing.T, partitionNum int) {
options := indexOptions{
indexType: BTree,
dirPath: filepath.Join(os.TempDir(), "bptree-deleteBatch-"+strconv.Itoa(partitionNum)),
partitionNum: partitionNum,
keyHashFunction: xxhash.Sum64,
}
err := os.MkdirAll(options.dirPath, os.ModePerm)
require.NoError(t, err)
defer func() {
_ = os.RemoveAll(options.dirPath)
}()
bt, err := openBTreeIndex(options)
require.NoError(t, err)
var keys [][]byte
keys = append(keys, nil, []byte("not-exist"), []byte("exist"), []byte(""))
var keyPositions []*KeyPosition
keyPositions = append(keyPositions, &KeyPosition{
key: []byte("exist"),
partition: uint32(bt.options.getKeyPartition([]byte("exist"))),
position: &wal.ChunkPosition{},
})
err = bt.PutBatch(keyPositions)
require.NoError(t, err)
tests := []struct {
name string
keys [][]byte
wantErr bool
}{
{"nil", keys[:1], true},
{"no-exist", keys[1:2], false},
{"exist", keys[2:3], false},
{"len(key)=0", keys[3:], true},
}
for _, tt := range tests {
t.Run(tt.name, func(t *testing.T) {
if err = bt.DeleteBatch(tt.keys); (err != nil) != tt.wantErr {
t.Errorf("BPTree.DeleteBatch() error = %v, wantErr %v", err, tt.wantErr)
}
})
}
}
func TestBPTree_Close_1(t *testing.T) {
testbptreeClose(t, 1)
}
func TestBPTree_Close_3(t *testing.T) {
testbptreeClose(t, 3)
}
func testbptreeClose(t *testing.T, partitionNum int) {
options := indexOptions{
indexType: BTree,
dirPath: filepath.Join(os.TempDir(), "bptree-close-"+strconv.Itoa(partitionNum)),
partitionNum: partitionNum,
keyHashFunction: xxhash.Sum64,
}
err := os.MkdirAll(options.dirPath, os.ModePerm)
require.NoError(t, err)
defer func() {
_ = os.RemoveAll(options.dirPath)
}()
bt, err := openBTreeIndex(options)
require.NoError(t, err)
err = bt.Close()
assert.NoError(t, err)
}
func TestBPTree_Sync_1(t *testing.T) {
testbptreeSync(t, 1)
}
func TestBPTree_Sync_3(t *testing.T) {
testbptreeSync(t, 3)
}
func testbptreeSync(t *testing.T, partitionNum int) {
options := indexOptions{
indexType: BTree,
dirPath: filepath.Join(os.TempDir(), "bptree-sync-"+strconv.Itoa(partitionNum)),
partitionNum: partitionNum,
keyHashFunction: xxhash.Sum64,
}
err := os.MkdirAll(options.dirPath, os.ModePerm)
require.NoError(t, err)
defer func() {
_ = os.RemoveAll(options.dirPath)
}()
bt, err := openBTreeIndex(options)
require.NoError(t, err)
assert.NotNil(t, bt)
err = bt.Sync()
assert.NoError(t, err)
}
func Test_bptreeIterator(t *testing.T) {
options := indexOptions{
indexType: BTree,
dirPath: filepath.Join(os.TempDir(), "bptree-cursorIterator"+strconv.Itoa(1)),
partitionNum: 1,
keyHashFunction: xxhash.Sum64,
}
err := os.MkdirAll(options.dirPath, os.ModePerm)
require.NoError(t, err)
defer func() {
_ = os.RemoveAll(options.dirPath)
}()
bt, err := openBTreeIndex(options)
require.NoError(t, err)
m := map[string]*wal.ChunkPosition{
"key 0": {SegmentId: 0, BlockNumber: 0, ChunkOffset: 0, ChunkSize: 0},
"key 1": {SegmentId: 1, BlockNumber: 1, ChunkOffset: 1, ChunkSize: 1},
"key 2": {SegmentId: 2, BlockNumber: 2, ChunkOffset: 2, ChunkSize: 2},
}
m2 := map[string]*wal.ChunkPosition{
"abc 0": {SegmentId: 3, BlockNumber: 3, ChunkOffset: 3, ChunkSize: 3},
"abc 1": {SegmentId: 4, BlockNumber: 4, ChunkOffset: 4, ChunkSize: 4},
}
var keyPositions, keyPositions2 []*KeyPosition
keyPositions = append(keyPositions, &KeyPosition{
key: []byte("key 0"),
partition: 0,
position: &wal.ChunkPosition{SegmentId: 0, BlockNumber: 0, ChunkOffset: 0, ChunkSize: 0},
}, &KeyPosition{
key: []byte("key 1"),
partition: 0,
position: &wal.ChunkPosition{SegmentId: 1, BlockNumber: 1, ChunkOffset: 1, ChunkSize: 1},
}, &KeyPosition{
key: []byte("key 2"),
partition: 0,
position: &wal.ChunkPosition{SegmentId: 2, BlockNumber: 2, ChunkOffset: 2, ChunkSize: 2},
},
)
keyPositions2 = append(keyPositions2, &KeyPosition{
key: []byte("key 0"),
partition: 0,
position: &wal.ChunkPosition{SegmentId: 0, BlockNumber: 0, ChunkOffset: 0, ChunkSize: 0},
}, &KeyPosition{
key: []byte("key 1"),
partition: 0,
position: &wal.ChunkPosition{SegmentId: 1, BlockNumber: 1, ChunkOffset: 1, ChunkSize: 1},
}, &KeyPosition{
key: []byte("key 2"),
partition: 0,
position: &wal.ChunkPosition{SegmentId: 2, BlockNumber: 2, ChunkOffset: 2, ChunkSize: 2},
}, &KeyPosition{
key: []byte("abc 0"),
partition: 0,
position: &wal.ChunkPosition{SegmentId: 3, BlockNumber: 3, ChunkOffset: 3, ChunkSize: 3},
}, &KeyPosition{
key: []byte("key abc"),
partition: 0,
position: &wal.ChunkPosition{SegmentId: 4, BlockNumber: 4, ChunkOffset: 4, ChunkSize: 4},
}, &KeyPosition{
key: []byte("abc 1"),
partition: 0,
position: &wal.ChunkPosition{SegmentId: 4, BlockNumber: 4, ChunkOffset: 4, ChunkSize: 4},
})
err = bt.PutBatch(keyPositions)
require.NoError(t, err)
tree := bt.trees[0]
tx, err := tree.Begin(true)
require.NoError(t, err)
iteratorOptions := IteratorOptions{
Reverse: false,
}
itr := newBptreeIterator(tx, iteratorOptions)
require.NoError(t, err)
var prev []byte
itr.Rewind()
for itr.Valid() {
currKey := itr.Key()
assert.True(t, prev == nil || bytes.Compare(prev, currKey) == -1)
assert.Equal(t, m[string(itr.Key())].Encode(), itr.Value())
prev = currKey
itr.Next()
}
err = itr.Close()
require.NoError(t, err)
tx, err = tree.Begin(true)
require.NoError(t, err)
iteratorOptions = IteratorOptions{
Reverse: true,
}
prev = nil
itr = newBptreeIterator(tx, iteratorOptions)
require.NoError(t, err)
itr.Rewind()
for itr.Valid() {
currKey := itr.Key()
assert.True(t, prev == nil || bytes.Compare(prev, currKey) == 1)
assert.Equal(t, m[string(itr.Key())].Encode(), itr.Value())
prev = currKey
itr.Next()
}
itr.Seek([]byte("key 4"))
assert.Equal(t, []byte("key 2"), itr.Key())
itr.Seek([]byte("key 2"))
assert.Equal(t, []byte("key 2"), itr.Key())
itr.Seek([]byte("aye 2"))
assert.False(t, itr.Valid())
err = itr.Close()
require.NoError(t, err)
tx, err = tree.Begin(true)
require.NoError(t, err)
iteratorOptions = IteratorOptions{
Reverse: false,
}
prev = nil
itr = newBptreeIterator(tx, iteratorOptions)
require.NoError(t, err)
itr.Rewind()
for itr.Valid() {
currKey := itr.Key()
assert.True(t, prev == nil || bytes.Compare(prev, currKey) == -1)
assert.Equal(t, m[string(itr.Key())].Encode(), itr.Value())
prev = currKey
itr.Next()
}
itr.Seek([]byte("key 0"))
assert.Equal(t, []byte("key 0"), itr.Key())
itr.Seek([]byte("key 4"))
assert.False(t, itr.Valid())
itr.Seek([]byte("aye 2"))
assert.Equal(t, []byte("key 0"), itr.Key())
err = itr.Close()
require.NoError(t, err)
// prefix
err = bt.PutBatch(keyPositions2)
require.NoError(t, err)
tx, err = tree.Begin(true)
require.NoError(t, err)
iteratorOptions = IteratorOptions{
Reverse: false,
Prefix: []byte("not valid"),
}
itr = newBptreeIterator(tx, iteratorOptions)
require.NoError(t, err)
itr.Rewind()
assert.False(t, itr.Valid())
err = itr.Close()
require.NoError(t, err)
tx, err = tree.Begin(true)
require.NoError(t, err)
iteratorOptions = IteratorOptions{
Reverse: false,
Prefix: []byte("abc"),
}
itr = newBptreeIterator(tx, iteratorOptions)
require.NoError(t, err)
itr.Rewind()
assert.True(t, itr.Valid())
for itr.Valid() {
assert.True(t, bytes.HasPrefix(itr.Key(), iteratorOptions.Prefix))
assert.Equal(t, m2[string(itr.Key())].Encode(), itr.Value())
itr.Next()
}
err = itr.Close()
assert.NoError(t, err)
}