1 /*
2  * Copyright (c) 2021 Huawei Device Co., Ltd.
3  * Licensed under the Apache License, Version 2.0 (the "License");
4  * you may not use this file except in compliance with the License.
5  * You may obtain a copy of the License at
6  *
7  *     http://www.apache.org/licenses/LICENSE-2.0
8  *
9  * Unless required by applicable law or agreed to in writing, software
10  * distributed under the License is distributed on an "AS IS" BASIS,
11  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12  * See the License for the specific language governing permissions and
13  * limitations under the License.
14  */
15 
16 #ifndef MULTI_STORAGE_ENGINE_H
17 #define MULTI_STORAGE_ENGINE_H
18 
19 #ifndef OMIT_MULTI_VER
20 #include "storage_engine.h"
21 #include "macro_utils.h"
22 #include "ikvdb.h"
23 #include "ikvdb_multi_ver_data_storage.h"
24 #include "ikvdb_commit_storage.h"
25 #include "multi_ver_kvdata_storage.h"
26 
27 namespace DistributedDB {
28 class MultiVerStorageEngine : public StorageEngine {
29 public:
30     MultiVerStorageEngine();
31     ~MultiVerStorageEngine() override;
32 
33     // Delete the copy and assign constructors
34     DISABLE_COPY_ASSIGN_MOVE(MultiVerStorageEngine);
35 
36     int InitDatabases(IKvDB *kvDB, IKvDBMultiVerDataStorage *dataStorage,
37         IKvDBCommitStorage *commitStorage, MultiVerKvDataStorage *kvDataStorage, const StorageEngineAttr &poolSize);
38 
39 protected:
40     int CreateNewExecutor(bool isWrite, StorageExecutor *&handle) override;
41 
42 private:
43     IKvDB *kvDB_;
44     IKvDBMultiVerDataStorage *dataStorage_;
45     IKvDBCommitStorage *commitStorage_;
46     MultiVerKvDataStorage *kvDataStorage_;
47 };
48 } // namespace DistributedDB
49 #endif // MULTI_STORAGE_ENGINE_H
50 #endif