works

performance seems about the same as leveldb for insert entries

weed/filer/rocksdb/rocksdb_store_kv.go

@@ -0,0 +1,51 @@
+// +build rocksdb
+
+package rocksdb
+
+import (
+	"context"
+	"fmt"
+	"github.com/tecbot/gorocksdb"
+
+	"github.com/chrislusf/seaweedfs/weed/filer"
+)
+
+func (store *RocksDBStore) KvPut(ctx context.Context, key []byte, value []byte) (err error) {
+
+	wo := gorocksdb.NewDefaultWriteOptions()
+	err = store.db.Put(wo, key, value)
+
+	if err != nil {
+		return fmt.Errorf("kv put: %v", err)
+	}
+
+	return nil
+}
+
+func (store *RocksDBStore) KvGet(ctx context.Context, key []byte) (value []byte, err error) {
+
+	ro := gorocksdb.NewDefaultReadOptions()
+	value, err = store.db.GetBytes(ro, key)
+
+	if value == nil {
+		return nil, filer.ErrKvNotFound
+	}
+
+	if err != nil {
+		return nil, fmt.Errorf("kv get: %v", err)
+	}
+
+	return
+}
+
+func (store *RocksDBStore) KvDelete(ctx context.Context, key []byte) (err error) {
+
+	wo := gorocksdb.NewDefaultWriteOptions()
+	err = store.db.Delete(wo, key)
+
+	if err != nil {
+		return fmt.Errorf("kv delete: %v", err)
+	}
+
+	return nil
+}