mirror of
https://github.com/seaweedfs/seaweedfs.git
synced 2024-12-03 00:49:13 +08:00
314 lines
7.6 KiB
Go
314 lines
7.6 KiB
Go
//go:build rocksdb
|
|
// +build rocksdb
|
|
|
|
package rocksdb
|
|
|
|
import (
|
|
"bytes"
|
|
"context"
|
|
"crypto/md5"
|
|
"fmt"
|
|
"io"
|
|
"os"
|
|
|
|
gorocksdb "github.com/linxGnu/grocksdb"
|
|
|
|
"github.com/seaweedfs/seaweedfs/weed/filer"
|
|
"github.com/seaweedfs/seaweedfs/weed/glog"
|
|
"github.com/seaweedfs/seaweedfs/weed/pb/filer_pb"
|
|
weed_util "github.com/seaweedfs/seaweedfs/weed/util"
|
|
)
|
|
|
|
func init() {
|
|
filer.Stores = append(filer.Stores, &RocksDBStore{})
|
|
}
|
|
|
|
type options struct {
|
|
opt *gorocksdb.Options
|
|
bto *gorocksdb.BlockBasedTableOptions
|
|
ro *gorocksdb.ReadOptions
|
|
wo *gorocksdb.WriteOptions
|
|
}
|
|
|
|
func (opt *options) init() {
|
|
opt.opt = gorocksdb.NewDefaultOptions()
|
|
opt.bto = gorocksdb.NewDefaultBlockBasedTableOptions()
|
|
opt.ro = gorocksdb.NewDefaultReadOptions()
|
|
opt.wo = gorocksdb.NewDefaultWriteOptions()
|
|
}
|
|
|
|
func (opt *options) close() {
|
|
opt.opt.Destroy()
|
|
opt.bto.Destroy()
|
|
opt.ro.Destroy()
|
|
opt.wo.Destroy()
|
|
}
|
|
|
|
type RocksDBStore struct {
|
|
path string
|
|
db *gorocksdb.DB
|
|
options
|
|
}
|
|
|
|
func (store *RocksDBStore) GetName() string {
|
|
return "rocksdb"
|
|
}
|
|
|
|
func (store *RocksDBStore) Initialize(configuration weed_util.Configuration, prefix string) (err error) {
|
|
dir := configuration.GetString(prefix + "dir")
|
|
return store.initialize(dir)
|
|
}
|
|
|
|
func (store *RocksDBStore) initialize(dir string) (err error) {
|
|
glog.Infof("filer store rocksdb dir: %s", dir)
|
|
os.MkdirAll(dir, 0755)
|
|
if err := weed_util.TestFolderWritable(dir); err != nil {
|
|
return fmt.Errorf("Check Level Folder %s Writable: %s", dir, err)
|
|
}
|
|
store.options.init()
|
|
store.opt.SetCreateIfMissing(true)
|
|
// reduce write amplification
|
|
// also avoid expired data stored in highest level never get compacted
|
|
store.opt.SetLevelCompactionDynamicLevelBytes(true)
|
|
store.opt.SetCompactionFilter(NewTTLFilter())
|
|
// store.opt.SetMaxBackgroundCompactions(2)
|
|
|
|
// https://github.com/tecbot/gorocksdb/issues/132
|
|
store.bto.SetFilterPolicy(gorocksdb.NewBloomFilterFull(8))
|
|
store.opt.SetBlockBasedTableFactory(store.bto)
|
|
// store.opt.EnableStatistics()
|
|
|
|
store.db, err = gorocksdb.OpenDb(store.opt, dir)
|
|
|
|
return
|
|
}
|
|
|
|
func (store *RocksDBStore) BeginTransaction(ctx context.Context) (context.Context, error) {
|
|
return ctx, nil
|
|
}
|
|
func (store *RocksDBStore) CommitTransaction(ctx context.Context) error {
|
|
return nil
|
|
}
|
|
func (store *RocksDBStore) RollbackTransaction(ctx context.Context) error {
|
|
return nil
|
|
}
|
|
|
|
func (store *RocksDBStore) InsertEntry(ctx context.Context, entry *filer.Entry) (err error) {
|
|
dir, name := entry.DirAndName()
|
|
key := genKey(dir, name)
|
|
|
|
value, err := entry.EncodeAttributesAndChunks()
|
|
if err != nil {
|
|
return fmt.Errorf("encoding %s %+v: %v", entry.FullPath, entry.Attr, err)
|
|
}
|
|
|
|
err = store.db.Put(store.wo, key, value)
|
|
|
|
if err != nil {
|
|
return fmt.Errorf("persisting %s : %v", entry.FullPath, err)
|
|
}
|
|
|
|
// println("saved", entry.FullPath, "chunks", len(entry.GetChunks()))
|
|
|
|
return nil
|
|
}
|
|
|
|
func (store *RocksDBStore) UpdateEntry(ctx context.Context, entry *filer.Entry) (err error) {
|
|
|
|
return store.InsertEntry(ctx, entry)
|
|
}
|
|
|
|
func (store *RocksDBStore) FindEntry(ctx context.Context, fullpath weed_util.FullPath) (entry *filer.Entry, err error) {
|
|
dir, name := fullpath.DirAndName()
|
|
key := genKey(dir, name)
|
|
data, err := store.db.Get(store.ro, key)
|
|
|
|
if data == nil || !data.Exists() {
|
|
return nil, filer_pb.ErrNotFound
|
|
}
|
|
defer data.Free()
|
|
|
|
if err != nil {
|
|
return nil, fmt.Errorf("get %s : %v", fullpath, err)
|
|
}
|
|
|
|
entry = &filer.Entry{
|
|
FullPath: fullpath,
|
|
}
|
|
err = entry.DecodeAttributesAndChunks(data.Data())
|
|
if err != nil {
|
|
return entry, fmt.Errorf("decode %s : %v", entry.FullPath, err)
|
|
}
|
|
|
|
// println("read", entry.FullPath, "chunks", len(entry.GetChunks()), "data", len(data), string(data))
|
|
|
|
return entry, nil
|
|
}
|
|
|
|
func (store *RocksDBStore) DeleteEntry(ctx context.Context, fullpath weed_util.FullPath) (err error) {
|
|
dir, name := fullpath.DirAndName()
|
|
key := genKey(dir, name)
|
|
|
|
err = store.db.Delete(store.wo, key)
|
|
if err != nil {
|
|
return fmt.Errorf("delete %s : %v", fullpath, err)
|
|
}
|
|
|
|
return nil
|
|
}
|
|
|
|
func (store *RocksDBStore) DeleteFolderChildren(ctx context.Context, fullpath weed_util.FullPath) (err error) {
|
|
directoryPrefix := genDirectoryKeyPrefix(fullpath, "")
|
|
|
|
batch := gorocksdb.NewWriteBatch()
|
|
defer batch.Destroy()
|
|
|
|
ro := gorocksdb.NewDefaultReadOptions()
|
|
defer ro.Destroy()
|
|
ro.SetFillCache(false)
|
|
|
|
iter := store.db.NewIterator(ro)
|
|
defer iter.Close()
|
|
err = enumerate(iter, directoryPrefix, nil, false, -1, func(key, value []byte) bool {
|
|
batch.Delete(key)
|
|
return true
|
|
})
|
|
if err != nil {
|
|
return fmt.Errorf("delete list %s : %v", fullpath, err)
|
|
}
|
|
|
|
err = store.db.Write(store.wo, batch)
|
|
|
|
if err != nil {
|
|
return fmt.Errorf("delete %s : %v", fullpath, err)
|
|
}
|
|
|
|
return nil
|
|
}
|
|
|
|
func enumerate(iter *gorocksdb.Iterator, prefix, lastKey []byte, includeLastKey bool, limit int64, fn func(key, value []byte) bool) (err error) {
|
|
|
|
if len(lastKey) == 0 {
|
|
iter.Seek(prefix)
|
|
} else {
|
|
iter.Seek(lastKey)
|
|
if !includeLastKey {
|
|
if iter.Valid() {
|
|
if bytes.Equal(iter.Key().Data(), lastKey) {
|
|
iter.Next()
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
i := int64(0)
|
|
for ; iter.Valid(); iter.Next() {
|
|
|
|
if limit > 0 {
|
|
i++
|
|
if i > limit {
|
|
break
|
|
}
|
|
}
|
|
|
|
key := iter.Key().Data()
|
|
|
|
if !bytes.HasPrefix(key, prefix) {
|
|
break
|
|
}
|
|
|
|
ret := fn(key, iter.Value().Data())
|
|
|
|
if !ret {
|
|
break
|
|
}
|
|
|
|
}
|
|
|
|
if err := iter.Err(); err != nil {
|
|
return fmt.Errorf("prefix scan iterator: %v", err)
|
|
}
|
|
return nil
|
|
}
|
|
|
|
func (store *RocksDBStore) ListDirectoryEntries(ctx context.Context, dirPath weed_util.FullPath, startFileName string, includeStartFile bool, limit int64, eachEntryFunc filer.ListEachEntryFunc) (lastFileName string, err error) {
|
|
return store.ListDirectoryPrefixedEntries(ctx, dirPath, startFileName, includeStartFile, limit, "", eachEntryFunc)
|
|
}
|
|
|
|
func (store *RocksDBStore) ListDirectoryPrefixedEntries(ctx context.Context, dirPath weed_util.FullPath, startFileName string, includeStartFile bool, limit int64, prefix string, eachEntryFunc filer.ListEachEntryFunc) (lastFileName string, err error) {
|
|
|
|
directoryPrefix := genDirectoryKeyPrefix(dirPath, prefix)
|
|
lastFileStart := directoryPrefix
|
|
if startFileName != "" {
|
|
lastFileStart = genDirectoryKeyPrefix(dirPath, startFileName)
|
|
}
|
|
|
|
ro := gorocksdb.NewDefaultReadOptions()
|
|
defer ro.Destroy()
|
|
ro.SetFillCache(false)
|
|
|
|
iter := store.db.NewIterator(ro)
|
|
defer iter.Close()
|
|
err = enumerate(iter, directoryPrefix, lastFileStart, includeStartFile, limit, func(key, value []byte) bool {
|
|
fileName := getNameFromKey(key)
|
|
if fileName == "" {
|
|
return true
|
|
}
|
|
entry := &filer.Entry{
|
|
FullPath: weed_util.NewFullPath(string(dirPath), fileName),
|
|
}
|
|
lastFileName = fileName
|
|
|
|
// println("list", entry.FullPath, "chunks", len(entry.GetChunks()))
|
|
if decodeErr := entry.DecodeAttributesAndChunks(value); decodeErr != nil {
|
|
err = decodeErr
|
|
glog.V(0).Infof("list %s : %v", entry.FullPath, err)
|
|
return false
|
|
}
|
|
if !eachEntryFunc(entry) {
|
|
return false
|
|
}
|
|
return true
|
|
})
|
|
if err != nil {
|
|
return lastFileName, fmt.Errorf("prefix list %s : %v", dirPath, err)
|
|
}
|
|
|
|
return lastFileName, err
|
|
}
|
|
|
|
func genKey(dirPath, fileName string) (key []byte) {
|
|
key = hashToBytes(dirPath)
|
|
key = append(key, []byte(fileName)...)
|
|
return key
|
|
}
|
|
|
|
func genDirectoryKeyPrefix(fullpath weed_util.FullPath, startFileName string) (keyPrefix []byte) {
|
|
keyPrefix = hashToBytes(string(fullpath))
|
|
if len(startFileName) > 0 {
|
|
keyPrefix = append(keyPrefix, []byte(startFileName)...)
|
|
}
|
|
return keyPrefix
|
|
}
|
|
|
|
func getNameFromKey(key []byte) string {
|
|
|
|
return string(key[md5.Size:])
|
|
|
|
}
|
|
|
|
// hash directory, and use last byte for partitioning
|
|
func hashToBytes(dir string) []byte {
|
|
h := md5.New()
|
|
io.WriteString(h, dir)
|
|
|
|
b := h.Sum(nil)
|
|
|
|
return b
|
|
}
|
|
|
|
func (store *RocksDBStore) Shutdown() {
|
|
store.db.Close()
|
|
store.options.close()
|
|
}
|