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db_impl_test.go
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328 lines (268 loc) · 7.58 KB
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package bitcask
import (
"crypto/sha1"
"os"
"strconv"
"sync"
"testing"
"github.com/stretchr/testify/assert"
)
func sha1Bytes(input string) [20]byte {
return sha1.Sum([]byte(input))
}
func setupDB(t *testing.T) *DBImpl {
dir := "./test_bitcask_db"
_ = os.RemoveAll(dir)
assert.Nil(t, os.MkdirAll(dir, os.ModePerm))
opts := &Options{
Dir: dir,
WalMaxSize: 1024 * 1024, // 1MB
ManifestMaxSize: 1024 * 1024, // 1MB
IndexCapacity: 1000000,
IndexLimited: 800000,
IndexEvictionPoolCapacity: 32,
IndexSampleKeys: 5,
BlockCacheCapacity: 8192, // 256MB
BlockCacheLimited: 8192,
BlockCacheSampleKeys: 5,
BlockCacheEvictionPoolCapacity: 32,
BlockReaderConcurrent: 32,
NsSize: DefaultNsSize,
EtagSize: DefaultEtagSize,
}
db, err := NewDB(opts)
assert.Nil(t, err)
assert.NotNil(t, db)
return db
}
func loadDB(t *testing.T) *DBImpl {
dir := "./test_bitcask_db"
opts := &Options{
Dir: dir,
WalMaxSize: 1024 * 1024, // 1MB
ManifestMaxSize: 1024 * 1024, // 1MB
IndexCapacity: 1000000,
IndexLimited: 800000,
IndexEvictionPoolCapacity: 32,
IndexSampleKeys: 5,
BlockCacheCapacity: 8192, // 256MB
BlockCacheLimited: 8192,
BlockCacheSampleKeys: 5,
BlockCacheEvictionPoolCapacity: 32,
BlockReaderConcurrent: 32,
NsSize: DefaultNsSize,
EtagSize: DefaultEtagSize,
}
db, err := NewDB(opts)
assert.Nil(t, err)
assert.NotNil(t, db)
return db
}
func teardownDB(db *DBImpl) {
db.Close()
_ = os.RemoveAll(db.opts.Dir)
}
func TestDBImplBasicWriteRead(t *testing.T) {
db := setupDB(t)
defer teardownDB(db)
now := uint64(db.WallTime().Unix())
ns := sha1Bytes("namespace")
key := []byte("testKey")
value := []byte("testValue")
etag := sha1Bytes(string(value))
meta := NewMeta(nil).SetExpire(now + 60).SetEtag(etag[:])
err := db.Put(ns[:], key, value, meta, &WriteOptions{})
assert.NoError(t, err)
// write without options
err = db.Put(ns[:], key, value, meta, nil)
assert.Nil(t, err)
readVal, readMeta, err := db.Get(ns[:], key, &ReadOptions{})
assert.NoError(t, err)
assert.Equal(t, value, readVal)
assert.Equal(t, meta, readMeta)
// read without options
readVal, readMeta, err = db.Get(ns[:], key, nil)
assert.NoError(t, err)
assert.Equal(t, value, readVal)
assert.Equal(t, meta, readMeta)
}
func TestDBImplBasicWriteReadV2(t *testing.T) {
db := setupDB(t)
defer teardownDB(db)
now := uint64(db.WallTime().Unix())
ns := sha1Bytes("namespace")
key := []byte("testKey")
value := []byte("testValue")
etag := sha1Bytes(string(value))
meta := NewMeta(nil).SetExpire(now + 60).SetEtag(etag[:])
err := db.Put(ns[:], key, value, meta, &WriteOptions{})
assert.NoError(t, err)
// write without options
err = db.Put(ns[:], key, value, meta, nil)
assert.Nil(t, err)
readVal, readMeta, err := db.GetV2(ns[:], key, &ReadOptions{})
assert.NoError(t, err)
assert.Equal(t, value, readVal)
assert.Equal(t, meta, readMeta)
// read without options
readVal, readMeta, err = db.GetV2(ns[:], key, nil)
assert.NoError(t, err)
assert.Equal(t, value, readVal)
assert.Equal(t, meta, readMeta)
}
func TestDBImplWriteEmptyValue(t *testing.T) {
db := setupDB(t)
defer teardownDB(db)
ns := sha1Bytes("namespace")
key := []byte("testKey")
meta := NewMeta(nil)
// no etag, no expire and no value
err := db.Put(ns[:], key, nil, meta, &WriteOptions{})
assert.NoError(t, err)
readVal, _, err := db.Get(ns[:], key, &ReadOptions{})
assert.NoError(t, err)
assert.Equal(t, len(readVal), 0)
}
func TestDBImplWriteDeleteRead(t *testing.T) {
db := setupDB(t)
defer teardownDB(db)
ns := sha1Bytes("namespace")
key := []byte("testKey")
value := []byte("testValue")
meta := NewMeta(nil)
_ = db.Put(ns[:], key, value, meta, &WriteOptions{})
_ = db.Delete(ns[:], key, &WriteOptions{})
readVal, _, err := db.Get(ns[:], key, &ReadOptions{})
assert.ErrorIs(t, err, ErrKeyNotFound)
assert.Nil(t, readVal)
}
func TestDBImplWALRotate(t *testing.T) {
db := setupDB(t)
defer teardownDB(db)
ns := sha1Bytes("wal-rotation")
meta := NewMeta(nil)
opts := &WriteOptions{}
initFid := db.manifest.active.Fid()
// 50000 > (1MB Wal / min 50B per record = 20000)
for i := 0; i < 50000; i++ {
key := sha1Bytes("key" + strconv.Itoa(i))
value := sha1Bytes("val" + strconv.Itoa(i))
err := db.Put(ns[:], key[:], value[:], meta, opts)
assert.Nil(t, err)
}
assert.NotEqual(t, initFid, db.manifest.active.Fid())
}
func TestDBImplPersistence(t *testing.T) {
db := setupDB(t)
bin4K := GenNKBytes(4)
appMeta := make(map[string]string)
appMeta["test"] = string(bin4K)
ns := sha1Bytes("persistence")
meta := NewMeta(appMeta)
opts := &WriteOptions{}
// write 10000 keys
for i := 0; i < 10000; i++ {
key := sha1Bytes("key" + strconv.Itoa(i))
value := sha1Bytes("val" + strconv.Itoa(i))
err := db.Put(ns[:], key[:], value[:], meta, opts)
assert.Nil(t, err)
}
// check
for i := 0; i < 10000; i++ {
key := sha1Bytes("key" + strconv.Itoa(i))
value := sha1Bytes("val" + strconv.Itoa(i))
readVal, readMeta, err := db.Get(ns[:], key[:], &ReadOptions{})
assert.Nil(t, err)
assert.Equal(t, readVal, value[:])
assert.Equal(t, readMeta.AppMeta, meta.AppMeta)
}
// re-open db
db.Close()
db = loadDB(t)
defer teardownDB(db)
// check again
for i := 0; i < 10000; i++ {
key := sha1Bytes("key" + strconv.Itoa(i))
value := sha1Bytes("val" + strconv.Itoa(i))
readVal, readMeta, err := db.Get(ns[:], key[:], &ReadOptions{})
assert.Nil(t, err)
assert.Equal(t, readVal, value[:])
assert.Equal(t, readMeta.AppMeta, meta.AppMeta)
}
}
/*
func TestDBImplBatchWrite(t *testing.T) {
}
*/
func TestDBImplConcurrentWriteAndRead(t *testing.T) {
db := setupDB(t)
defer teardownDB(db)
var wg sync.WaitGroup
ns := sha1Bytes("concurrent")
meta := NewMeta(nil)
genBytes := func(i, j int) []byte {
return []byte("i" + strconv.Itoa(i) + "j" + strconv.Itoa(j))
}
// total: 25000 keys
for i := 0; i < 50; i++ {
wg.Add(1)
// each goroutine writes 500 keys
go func(i int) {
defer wg.Done()
for j := 0; j < 500; j++ {
// key equals it's value
key := genBytes(i, j)
value := genBytes(i, j)
err := db.Put(ns[:], key, value, meta, &WriteOptions{})
assert.Nil(t, err)
}
// check
for j := 0; j < 500; j++ {
key := genBytes(i, j)
val, _, err := db.Get(ns[:], key, &ReadOptions{})
if err != nil {
print(err.Error())
}
assert.Nil(t, err)
assert.Equal(t, val, key)
}
}(i)
}
wg.Wait()
}
func TestDBImplConcurrentWriteAndReadV2(t *testing.T) {
db := setupDB(t)
defer teardownDB(db)
var wg sync.WaitGroup
ns := sha1Bytes("concurrent")
meta := NewMeta(nil)
genBytes := func(i, j int) []byte {
return []byte("i" + strconv.Itoa(i) + "j" + strconv.Itoa(j))
}
// total: 25000 keys
for i := 0; i < 50; i++ {
wg.Add(1)
// each goroutine writes 500 keys
go func(i int) {
defer wg.Done()
for j := 0; j < 500; j++ {
// key equals it's value
key := genBytes(i, j)
value := genBytes(i, j)
err := db.Put(ns[:], key, value, meta, &WriteOptions{})
assert.Nil(t, err)
}
// check
for j := 0; j < 500; j++ {
key := genBytes(i, j)
val, _, err := db.GetV2(ns[:], key, &ReadOptions{})
if err != nil {
print(err.Error())
}
assert.Nil(t, err)
assert.Equal(t, val, key)
}
}(i)
}
wg.Wait()
}