1 files changed, 227 insertions, 0 deletions
diff --git a/weed/filer/hbase/hbase_store.go b/weed/filer/hbase/hbase_store.go
new file mode 100644
index 000000000..6b0ad58b9
--- /dev/null
+++ b/weed/filer/hbase/hbase_store.go
@@ -0,0 +1,227 @@
+package hbase
+
+import (
+	"bytes"
+	"context"
+	"fmt"
+	"github.com/chrislusf/seaweedfs/weed/filer"
+	"github.com/chrislusf/seaweedfs/weed/glog"
+	"github.com/chrislusf/seaweedfs/weed/pb/filer_pb"
+	"github.com/chrislusf/seaweedfs/weed/util"
+	"github.com/tsuna/gohbase"
+	"github.com/tsuna/gohbase/hrpc"
+	"io"
+)
+
+func init() {
+	filer.Stores = append(filer.Stores, &HbaseStore{})
+}
+
+type HbaseStore struct {
+	Client    gohbase.Client
+	table     []byte
+	cfKv      string
+	cfMetaDir string
+	column    string
+}
+
+func (store *HbaseStore) GetName() string {
+	return "hbase"
+}
+
+func (store *HbaseStore) Initialize(configuration util.Configuration, prefix string) (err error) {
+	return store.initialize(
+		configuration.GetString(prefix+"zkquorum"),
+		configuration.GetString(prefix+"table"),
+	)
+}
+
+func (store *HbaseStore) initialize(zkquorum, table string) (err error) {
+	store.Client = gohbase.NewClient(zkquorum)
+	store.table = []byte(table)
+	store.cfKv = "kv"
+	store.cfMetaDir = "meta"
+	store.column = "a"
+
+	// check table exists
+	key := "whatever"
+	headers := map[string][]string{store.cfMetaDir: nil}
+	get, err := hrpc.NewGet(context.Background(), store.table, []byte(key), hrpc.Families(headers))
+	if err != nil {
+		return fmt.Errorf("NewGet returned an error: %v", err)
+	}
+	_, err = store.Client.Get(get)
+	if err != gohbase.TableNotFound {
+		return nil
+	}
+
+	// create table
+	adminClient := gohbase.NewAdminClient(zkquorum)
+	cFamilies := []string{store.cfKv, store.cfMetaDir}
+	cf := make(map[string]map[string]string, len(cFamilies))
+	for _, f := range cFamilies {
+		cf[f] = nil
+	}
+	ct := hrpc.NewCreateTable(context.Background(), []byte(table), cf)
+	if err := adminClient.CreateTable(ct); err != nil {
+		return err
+	}
+
+	return nil
+}
+
+func (store *HbaseStore) InsertEntry(ctx context.Context, entry *filer.Entry) error {
+	value, err := entry.EncodeAttributesAndChunks()
+	if err != nil {
+		return fmt.Errorf("encoding %s %+v: %v", entry.FullPath, entry.Attr, err)
+	}
+	if len(entry.Chunks) > 50 {
+		value = util.MaybeGzipData(value)
+	}
+
+	return store.doPut(ctx, store.cfMetaDir, []byte(entry.FullPath), value, entry.TtlSec)
+}
+
+func (store *HbaseStore) UpdateEntry(ctx context.Context, entry *filer.Entry) (err error) {
+	return store.InsertEntry(ctx, entry)
+}
+
+func (store *HbaseStore) FindEntry(ctx context.Context, path util.FullPath) (entry *filer.Entry, err error) {
+	value, err := store.doGet(ctx, store.cfMetaDir, []byte(path))
+	if err != nil {
+		if err == filer.ErrKvNotFound {
+			return nil, filer_pb.ErrNotFound
+		}
+		return nil, err
+	}
+
+	entry = &filer.Entry{
+		FullPath: path,
+	}
+	err = entry.DecodeAttributesAndChunks(util.MaybeDecompressData(value))
+	if err != nil {
+		return entry, fmt.Errorf("decode %s : %v", entry.FullPath, err)
+	}
+	return entry, nil
+}
+
+func (store *HbaseStore) DeleteEntry(ctx context.Context, path util.FullPath) (err error) {
+	return store.doDelete(ctx, store.cfMetaDir, []byte(path))
+}
+
+func (store *HbaseStore) DeleteFolderChildren(ctx context.Context, path util.FullPath) (err error) {
+
+	family := map[string][]string{store.cfMetaDir: {COLUMN_NAME}}
+	expectedPrefix := []byte(path.Child(""))
+	scan, err := hrpc.NewScanRange(ctx, store.table, expectedPrefix, nil, hrpc.Families(family))
+	if err != nil {
+		return err
+	}
+
+	scanner := store.Client.Scan(scan)
+	defer scanner.Close()
+	for {
+		res, err := scanner.Next()
+		if err != nil {
+			break
+		}
+		if len(res.Cells) == 0 {
+			continue
+		}
+		cell := res.Cells[0]
+
+		if !bytes.HasPrefix(cell.Row, expectedPrefix) {
+			break
+		}
+		fullpath := util.FullPath(cell.Row)
+		dir, _ := fullpath.DirAndName()
+		if dir != string(path) {
+			continue
+		}
+
+		err = store.doDelete(ctx, store.cfMetaDir, cell.Row)
+		if err != nil {
+			break
+		}
+
+	}
+	return
+}
+
+func (store *HbaseStore) ListDirectoryEntries(ctx context.Context, dirPath util.FullPath, startFileName string, includeStartFile bool, limit int) ([]*filer.Entry, error) {
+	return store.ListDirectoryPrefixedEntries(ctx, dirPath, startFileName, includeStartFile, limit, "")
+}
+
+func (store *HbaseStore) ListDirectoryPrefixedEntries(ctx context.Context, dirPath util.FullPath, startFileName string, includeStartFile bool, limit int, prefix string) ([]*filer.Entry, error) {
+	family := map[string][]string{store.cfMetaDir: {COLUMN_NAME}}
+	expectedPrefix := []byte(dirPath.Child(prefix))
+	scan, err := hrpc.NewScanRange(ctx, store.table, expectedPrefix, nil, hrpc.Families(family))
+	if err != nil {
+		return nil, err
+	}
+
+	var entries []*filer.Entry
+	scanner := store.Client.Scan(scan)
+	defer scanner.Close()
+	for {
+		res, err := scanner.Next()
+		if err == io.EOF {
+			break
+		}
+		if err != nil {
+			return entries, err
+		}
+		if len(res.Cells) == 0 {
+			continue
+		}
+		cell := res.Cells[0]
+
+		if !bytes.HasPrefix(cell.Row, expectedPrefix) {
+			break
+		}
+
+		fullpath := util.FullPath(cell.Row)
+		dir, fileName := fullpath.DirAndName()
+		if dir != string(dirPath) {
+			continue
+		}
+
+		value := cell.Value
+
+		if fileName == startFileName && !includeStartFile {
+			continue
+		}
+
+		limit--
+		if limit < 0 {
+			break
+		}
+		entry := &filer.Entry{
+			FullPath: fullpath,
+		}
+		if decodeErr := entry.DecodeAttributesAndChunks(util.MaybeDecompressData(value)); decodeErr != nil {
+			err = decodeErr
+			glog.V(0).Infof("list %s : %v", entry.FullPath, err)
+			break
+		}
+		entries = append(entries, entry)
+	}
+
+	return entries, nil
+}
+
+func (store *HbaseStore) BeginTransaction(ctx context.Context) (context.Context, error) {
+	return ctx, nil
+}
+
+func (store *HbaseStore) CommitTransaction(ctx context.Context) error {
+	return nil
+}
+
+func (store *HbaseStore) RollbackTransaction(ctx context.Context) error {
+	return nil
+}
+
+func (store *HbaseStore) Shutdown() {
+	store.Client.Close()
+}