1 files changed, 43 insertions, 0 deletions
diff --git a/src/rocksdb/utilities/transactions/optimistic_transaction_db_impl.h b/src/rocksdb/utilities/transactions/optimistic_transaction_db_impl.h
new file mode 100644
index 00000000..49240a98
--- /dev/null
+++ b/src/rocksdb/utilities/transactions/optimistic_transaction_db_impl.h
@@ -0,0 +1,43 @@
+//  Copyright (c) 2011-present, Facebook, Inc.  All rights reserved.
+//  This source code is licensed under both the GPLv2 (found in the
+//  COPYING file in the root directory) and Apache 2.0 License
+//  (found in the LICENSE.Apache file in the root directory).
+
+#pragma once
+#ifndef ROCKSDB_LITE
+
+#include "rocksdb/db.h"
+#include "rocksdb/options.h"
+#include "rocksdb/utilities/optimistic_transaction_db.h"
+
+namespace rocksdb {
+
+class OptimisticTransactionDBImpl : public OptimisticTransactionDB {
+ public:
+  explicit OptimisticTransactionDBImpl(DB* db, bool take_ownership = true)
+      : OptimisticTransactionDB(db), db_owner_(take_ownership) {}
+
+  ~OptimisticTransactionDBImpl() {
+    // Prevent this stackable from destroying
+    // base db
+    if (!db_owner_) {
+      db_ = nullptr;
+    }
+  }
+
+  Transaction* BeginTransaction(const WriteOptions& write_options,
+                                const OptimisticTransactionOptions& txn_options,
+                                Transaction* old_txn) override;
+
+ private:
+
+   bool db_owner_;
+
+  void ReinitializeTransaction(Transaction* txn,
+                               const WriteOptions& write_options,
+                               const OptimisticTransactionOptions& txn_options =
+                                   OptimisticTransactionOptions());
+};
+
+}  //  namespace rocksdb
+#endif  // ROCKSDB_LITE