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 SQLITE_KVDB_HANDLE_POOL_H 17 #define SQLITE_KVDB_HANDLE_POOL_H 18 19 #include <vector> 20 21 #include "macro_utils.h" 22 #include "storage_engine.h" 23 #include "sqlite_utils.h" 24 25 namespace DistributedDB { 26 class SQLiteStorageEngine : public StorageEngine { 27 public: 28 SQLiteStorageEngine(); 29 ~SQLiteStorageEngine() override; 30 31 // Delete the copy and assign constructors 32 DISABLE_COPY_ASSIGN_MOVE(SQLiteStorageEngine); 33 34 int InitSQLiteStorageEngine(const StorageEngineAttr &poolSize, const OpenDbProperties &option, 35 const std::string &identifier = std::string()); 36 37 bool IsNeedTobeReleased() const override; 38 39 const std::string &GetIdentifier() const override; 40 41 EngineState GetEngineState() const override; 42 43 int ExecuteMigrate() override; 44 45 void SetEngineState(EngineState state) override; 46 47 const OpenDbProperties &GetOpenOption() const; 48 49 virtual void IncreaseCacheRecordVersion(); 50 virtual uint64_t GetCacheRecordVersion() const; 51 virtual uint64_t GetAndIncreaseCacheRecordVersion(); 52 53 virtual bool IsEngineCorrupted() const; 54 55 void ClearEnginePasswd() override; 56 57 int CheckEngineOption(const KvDBProperties &kvdbOption) const override; 58 59 protected: 60 61 virtual int Upgrade(sqlite3 *db); 62 63 virtual StorageExecutor *NewSQLiteStorageExecutor(sqlite3 *dbHandle, bool isWrite, bool isMemDb) = 0; 64 65 int CreateNewExecutor(bool isWrite, StorageExecutor *&handle) override; 66 67 virtual int ReInit(); 68 69 bool IsNeedMigrate() const override; 70 71 OpenDbProperties option_; 72 }; 73 } // namespace DistributedDB 74 #endif // SQLITE_DB_HANDLE_H 75