mirror of
https://github.com/seaweedfs/seaweedfs.git
synced 2024-01-19 02:48:24 +00:00
filer: add leveldb3
support dedicated leveldb instance for each bucket
This commit is contained in:
Chris Lu
parent
361043e6c1
commit
629c9962e7
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@ -89,6 +89,12 @@ buckets_folder = "/buckets"
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enabled = true
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dir = "./filerldb2" # directory to store level db files
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[leveldb3]
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# similar to leveldb2.
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# each bucket has its own meta store.
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enabled = false
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dir = "./filerldb3" # directory to store level db files
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[rocksdb]
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# local on disk, similar to leveldb
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# since it is using a C wrapper, you need to install rocksdb and build it by yourself
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363
weed/filer/leveldb3/leveldb3_store.go
Normal file
363
weed/filer/leveldb3/leveldb3_store.go
Normal file
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@ -0,0 +1,363 @@
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package leveldb
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import (
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"bytes"
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"context"
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"crypto/md5"
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"fmt"
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"github.com/syndtr/goleveldb/leveldb"
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leveldb_errors "github.com/syndtr/goleveldb/leveldb/errors"
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"github.com/syndtr/goleveldb/leveldb/opt"
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leveldb_util "github.com/syndtr/goleveldb/leveldb/util"
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"io"
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"os"
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"strings"
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"sync"
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"github.com/chrislusf/seaweedfs/weed/filer"
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"github.com/chrislusf/seaweedfs/weed/glog"
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"github.com/chrislusf/seaweedfs/weed/pb/filer_pb"
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weed_util "github.com/chrislusf/seaweedfs/weed/util"
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)
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const (
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DEFAULT = "_main"
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)
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func init() {
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filer.Stores = append(filer.Stores, &LevelDB3Store{})
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}
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type LevelDB3Store struct {
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dir string
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dbs map[string]*leveldb.DB
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dbsLock sync.RWMutex
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}
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func (store *LevelDB3Store) GetName() string {
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return "leveldb3"
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}
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func (store *LevelDB3Store) Initialize(configuration weed_util.Configuration, prefix string) (err error) {
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dir := configuration.GetString(prefix + "dir")
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return store.initialize(dir)
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}
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func (store *LevelDB3Store) initialize(dir string) (err error) {
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glog.Infof("filer store leveldb3 dir: %s", dir)
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if err := weed_util.TestFolderWritable(dir); err != nil {
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return fmt.Errorf("Check Level Folder %s Writable: %s", dir, err)
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}
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store.dir = dir
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db, loadDbErr := store.loadDB(DEFAULT)
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if loadDbErr != nil {
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return loadDbErr
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}
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store.dbs = make(map[string]*leveldb.DB)
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store.dbs[DEFAULT] = db
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return
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}
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func (store *LevelDB3Store) loadDB(name string) (*leveldb.DB, error) {
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opts := &opt.Options{
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BlockCacheCapacity: 32 * 1024 * 1024, // default value is 8MiB
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WriteBuffer: 16 * 1024 * 1024, // default value is 4MiB
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CompactionTableSizeMultiplier: 4,
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}
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if name != DEFAULT {
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opts = &opt.Options{
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BlockCacheCapacity: 4 * 1024 * 1024, // default value is 8MiB
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WriteBuffer: 2 * 1024 * 1024, // default value is 4MiB
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CompactionTableSizeMultiplier: 4,
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}
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}
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dbFolder := fmt.Sprintf("%s/%s", store.dir, name)
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os.MkdirAll(dbFolder, 0755)
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db, dbErr := leveldb.OpenFile(dbFolder, opts)
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if leveldb_errors.IsCorrupted(dbErr) {
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db, dbErr = leveldb.RecoverFile(dbFolder, opts)
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}
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if dbErr != nil {
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glog.Errorf("filer store open dir %s: %v", dbFolder, dbErr)
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return nil, dbErr
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}
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return db, nil
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}
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func (store *LevelDB3Store) findDB(fullpath weed_util.FullPath, isForChildren bool) (*leveldb.DB, string, weed_util.FullPath, error) {
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store.dbsLock.RLock()
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defaultDB := store.dbs[DEFAULT]
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if !strings.HasPrefix(string(fullpath), "/buckets/") {
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store.dbsLock.RUnlock()
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return defaultDB, DEFAULT, fullpath, nil
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}
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// detect bucket
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bucketAndObjectKey := string(fullpath)[len("/buckets/"):]
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t := strings.Index(bucketAndObjectKey, "/")
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if t < 0 && !isForChildren {
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store.dbsLock.RUnlock()
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return defaultDB, DEFAULT, fullpath, nil
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}
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bucket := bucketAndObjectKey
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shortPath := weed_util.FullPath("/")
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if t > 0 {
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bucket = bucketAndObjectKey[:t]
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shortPath = weed_util.FullPath(bucketAndObjectKey[t:])
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}
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println("bucket:", bucket, "shortPath", shortPath)
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if db, found := store.dbs[bucket]; found {
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store.dbsLock.RUnlock()
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return db, bucket, shortPath, nil
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}
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store.dbsLock.RUnlock()
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// upgrade to write lock
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store.dbsLock.Lock()
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defer store.dbsLock.Unlock()
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// double check after getting the write lock
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if db, found := store.dbs[bucket]; found {
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return db, bucket, shortPath, nil
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}
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// create db
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db, err := store.loadDB(bucket)
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if err != nil {
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return nil, bucket, shortPath, err
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}
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store.dbs[bucket] = db
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return db, bucket, shortPath, nil
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}
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func (store *LevelDB3Store) BeginTransaction(ctx context.Context) (context.Context, error) {
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return ctx, nil
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}
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func (store *LevelDB3Store) CommitTransaction(ctx context.Context) error {
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return nil
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}
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func (store *LevelDB3Store) RollbackTransaction(ctx context.Context) error {
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return nil
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}
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func (store *LevelDB3Store) InsertEntry(ctx context.Context, entry *filer.Entry) (err error) {
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db, _, shortPath, err := store.findDB(entry.FullPath, false)
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if err != nil {
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return fmt.Errorf("findDB %s : %v", entry.FullPath, err)
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}
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dir, name := shortPath.DirAndName()
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key := genKey(dir, name)
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value, err := entry.EncodeAttributesAndChunks()
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if err != nil {
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return fmt.Errorf("encoding %s %+v: %v", entry.FullPath, entry.Attr, err)
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}
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if len(entry.Chunks) > 50 {
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value = weed_util.MaybeGzipData(value)
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}
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err = db.Put(key, value, nil)
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if err != nil {
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return fmt.Errorf("persisting %s : %v", entry.FullPath, err)
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}
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// println("saved", entry.FullPath, "chunks", len(entry.Chunks))
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return nil
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}
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func (store *LevelDB3Store) UpdateEntry(ctx context.Context, entry *filer.Entry) (err error) {
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return store.InsertEntry(ctx, entry)
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}
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func (store *LevelDB3Store) FindEntry(ctx context.Context, fullpath weed_util.FullPath) (entry *filer.Entry, err error) {
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db, _, shortPath, err := store.findDB(fullpath, false)
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if err != nil {
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return nil, fmt.Errorf("findDB %s : %v", fullpath, err)
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}
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dir, name := shortPath.DirAndName()
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key := genKey(dir, name)
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data, err := db.Get(key, nil)
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if err == leveldb.ErrNotFound {
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return nil, filer_pb.ErrNotFound
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}
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if err != nil {
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return nil, fmt.Errorf("get %s : %v", fullpath, err)
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}
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entry = &filer.Entry{
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FullPath: fullpath,
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}
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err = entry.DecodeAttributesAndChunks(weed_util.MaybeDecompressData(data))
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if err != nil {
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return entry, fmt.Errorf("decode %s : %v", entry.FullPath, err)
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}
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// println("read", entry.FullPath, "chunks", len(entry.Chunks), "data", len(data), string(data))
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return entry, nil
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}
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func (store *LevelDB3Store) DeleteEntry(ctx context.Context, fullpath weed_util.FullPath) (err error) {
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db, _, shortPath, err := store.findDB(fullpath, false)
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if err != nil {
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return fmt.Errorf("findDB %s : %v", fullpath, err)
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}
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dir, name := shortPath.DirAndName()
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key := genKey(dir, name)
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err = db.Delete(key, nil)
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if err != nil {
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return fmt.Errorf("delete %s : %v", fullpath, err)
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}
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return nil
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}
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func (store *LevelDB3Store) DeleteFolderChildren(ctx context.Context, fullpath weed_util.FullPath) (err error) {
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db, bucket, shortPath, err := store.findDB(fullpath, true)
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if err != nil {
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return fmt.Errorf("findDB %s : %v", fullpath, err)
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}
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if bucket != DEFAULT && shortPath == "/" {
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db.Close()
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if bucket != "" { // just to make sure
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os.RemoveAll(store.dir + "/" + bucket)
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}
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return nil
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}
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directoryPrefix := genDirectoryKeyPrefix(shortPath, "")
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batch := new(leveldb.Batch)
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iter := db.NewIterator(&leveldb_util.Range{Start: directoryPrefix}, nil)
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for iter.Next() {
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key := iter.Key()
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if !bytes.HasPrefix(key, directoryPrefix) {
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break
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}
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fileName := getNameFromKey(key)
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if fileName == "" {
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continue
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}
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batch.Delete(append(directoryPrefix, []byte(fileName)...))
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}
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iter.Release()
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err = db.Write(batch, nil)
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if err != nil {
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return fmt.Errorf("delete %s : %v", fullpath, err)
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}
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return nil
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}
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func (store *LevelDB3Store) ListDirectoryEntries(ctx context.Context, fullpath weed_util.FullPath, startFileName string, inclusive bool,
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limit int) (entries []*filer.Entry, err error) {
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return store.ListDirectoryPrefixedEntries(ctx, fullpath, startFileName, inclusive, limit, "")
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}
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func (store *LevelDB3Store) ListDirectoryPrefixedEntries(ctx context.Context, fullpath weed_util.FullPath, startFileName string, inclusive bool, limit int, prefix string) (entries []*filer.Entry, err error) {
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db, _, shortPath, err := store.findDB(fullpath, true)
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if err != nil {
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return nil, fmt.Errorf("findDB %s : %v", fullpath, err)
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}
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directoryPrefix := genDirectoryKeyPrefix(shortPath, prefix)
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lastFileStart := directoryPrefix
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if startFileName != "" {
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lastFileStart = genDirectoryKeyPrefix(shortPath, startFileName)
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}
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iter := db.NewIterator(&leveldb_util.Range{Start: lastFileStart}, nil)
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for iter.Next() {
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key := iter.Key()
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if !bytes.HasPrefix(key, directoryPrefix) {
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break
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}
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fileName := getNameFromKey(key)
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if fileName == "" {
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continue
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}
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if fileName == startFileName && !inclusive {
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continue
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}
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limit--
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if limit < 0 {
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break
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}
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entry := &filer.Entry{
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FullPath: weed_util.NewFullPath(string(fullpath), fileName),
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}
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// println("list", entry.FullPath, "chunks", len(entry.Chunks))
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if decodeErr := entry.DecodeAttributesAndChunks(weed_util.MaybeDecompressData(iter.Value())); decodeErr != nil {
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err = decodeErr
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glog.V(0).Infof("list %s : %v", entry.FullPath, err)
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break
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}
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entries = append(entries, entry)
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}
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iter.Release()
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return entries, err
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}
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func genKey(dirPath, fileName string) (key []byte) {
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key = hashToBytes(dirPath)
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key = append(key, []byte(fileName)...)
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return key
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}
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func genDirectoryKeyPrefix(fullpath weed_util.FullPath, startFileName string) (keyPrefix []byte) {
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keyPrefix = hashToBytes(string(fullpath))
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if len(startFileName) > 0 {
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keyPrefix = append(keyPrefix, []byte(startFileName)...)
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}
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return keyPrefix
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}
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func getNameFromKey(key []byte) string {
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return string(key[md5.Size:])
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}
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// hash directory
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func hashToBytes(dir string) []byte {
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h := md5.New()
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io.WriteString(h, dir)
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b := h.Sum(nil)
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return b
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}
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func (store *LevelDB3Store) Shutdown() {
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for _, db := range store.dbs {
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db.Close()
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}
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}
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46
weed/filer/leveldb3/leveldb3_store_kv.go
Normal file
46
weed/filer/leveldb3/leveldb3_store_kv.go
Normal file
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@ -0,0 +1,46 @@
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package leveldb
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import (
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"context"
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"fmt"
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"github.com/chrislusf/seaweedfs/weed/filer"
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"github.com/syndtr/goleveldb/leveldb"
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)
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func (store *LevelDB3Store) KvPut(ctx context.Context, key []byte, value []byte) (err error) {
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err = store.dbs[DEFAULT].Put(key, value, nil)
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if err != nil {
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return fmt.Errorf("kv put: %v", err)
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}
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return nil
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}
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func (store *LevelDB3Store) KvGet(ctx context.Context, key []byte) (value []byte, err error) {
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value, err = store.dbs[DEFAULT].Get(key, nil)
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if err == leveldb.ErrNotFound {
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return nil, filer.ErrKvNotFound
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}
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if err != nil {
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return nil, fmt.Errorf("kv get: %v", err)
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}
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return
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}
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func (store *LevelDB3Store) KvDelete(ctx context.Context, key []byte) (err error) {
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err = store.dbs[DEFAULT].Delete(key, nil)
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if err != nil {
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return fmt.Errorf("kv delete: %v", err)
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}
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return nil
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}
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88
weed/filer/leveldb3/leveldb3_store_test.go
Normal file
88
weed/filer/leveldb3/leveldb3_store_test.go
Normal file
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@ -0,0 +1,88 @@
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package leveldb
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import (
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"context"
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"io/ioutil"
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"os"
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"testing"
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"github.com/chrislusf/seaweedfs/weed/filer"
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"github.com/chrislusf/seaweedfs/weed/util"
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)
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func TestCreateAndFind(t *testing.T) {
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testFiler := filer.NewFiler(nil, nil, "", 0, "", "", "", nil)
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dir, _ := ioutil.TempDir("", "seaweedfs_filer_test")
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defer os.RemoveAll(dir)
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store := &LevelDB3Store{}
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store.initialize(dir, 2)
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testFiler.SetStore(store)
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fullpath := util.FullPath("/home/chris/this/is/one/file1.jpg")
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ctx := context.Background()
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entry1 := &filer.Entry{
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FullPath: fullpath,
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Attr: filer.Attr{
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Mode: 0440,
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Uid: 1234,
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Gid: 5678,
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},
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}
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if err := testFiler.CreateEntry(ctx, entry1, false, false, nil); err != nil {
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t.Errorf("create entry %v: %v", entry1.FullPath, err)
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return
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}
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entry, err := testFiler.FindEntry(ctx, fullpath)
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if err != nil {
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t.Errorf("find entry: %v", err)
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return
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}
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if entry.FullPath != entry1.FullPath {
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t.Errorf("find wrong entry: %v", entry.FullPath)
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return
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}
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// checking one upper directory
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entries, _ := testFiler.ListDirectoryEntries(ctx, util.FullPath("/home/chris/this/is/one"), "", false, 100, "", "")
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if len(entries) != 1 {
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t.Errorf("list entries count: %v", len(entries))
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return
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}
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// checking one upper directory
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entries, _ = testFiler.ListDirectoryEntries(ctx, util.FullPath("/"), "", false, 100, "", "")
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if len(entries) != 1 {
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t.Errorf("list entries count: %v", len(entries))
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return
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}
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}
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func TestEmptyRoot(t *testing.T) {
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testFiler := filer.NewFiler(nil, nil, "", 0, "", "", "", nil)
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dir, _ := ioutil.TempDir("", "seaweedfs_filer_test2")
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||||
defer os.RemoveAll(dir)
|
||||
store := &LevelDB3Store{}
|
||||
store.initialize(dir, 2)
|
||||
testFiler.SetStore(store)
|
||||
|
||||
ctx := context.Background()
|
||||
|
||||
// checking one upper directory
|
||||
entries, err := testFiler.ListDirectoryEntries(ctx, util.FullPath("/"), "", false, 100, "", "")
|
||||
if err != nil {
|
||||
t.Errorf("list entries: %v", err)
|
||||
return
|
||||
}
|
||||
if len(entries) != 0 {
|
||||
t.Errorf("list entries count: %v", len(entries))
|
||||
return
|
||||
}
|
||||
|
||||
}
|
||||
|
|
@ -26,6 +26,7 @@ import (
|
|||
_ "github.com/chrislusf/seaweedfs/weed/filer/hbase"
|
||||
_ "github.com/chrislusf/seaweedfs/weed/filer/leveldb"
|
||||
_ "github.com/chrislusf/seaweedfs/weed/filer/leveldb2"
|
||||
_ "github.com/chrislusf/seaweedfs/weed/filer/leveldb3"
|
||||
_ "github.com/chrislusf/seaweedfs/weed/filer/mongodb"
|
||||
_ "github.com/chrislusf/seaweedfs/weed/filer/mysql"
|
||||
_ "github.com/chrislusf/seaweedfs/weed/filer/postgres"
|
||||
|
|
|
|||
Loading…
Reference in a new issue