1 /* 2 * Copyright (c) 2023 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 #ifndef IASSET_LOADER_H 16 #define IASSET_LOADER_H 17 18 #include <cstdint> 19 #include <functional> 20 #include <memory> 21 #include <string> 22 #include <vector> 23 #include "cloud/cloud_store_types.h" 24 25 namespace DistributedDB { 26 class IAssetLoader { 27 public: 28 virtual ~IAssetLoader() = default; 29 30 // for single primary key data, prefix is the key; otherwise, prefix is default value of std::std::monostate Download(const std::string & tableName,const std::string & gid,const Type & prefix,std::map<std::string,Assets> & assets)31 virtual DBStatus Download(const std::string &tableName, const std::string &gid, const Type &prefix, 32 std::map<std::string, Assets> &assets) 33 { 34 return DBStatus::OK; 35 } 36 RemoveLocalAssets(const std::vector<Asset> & assets)37 virtual DBStatus RemoveLocalAssets(const std::vector<Asset> &assets) 38 { 39 return DBStatus::OK; 40 } 41 RemoveLocalAssets(const std::string & tableName,const std::string & gid,const Type & prefix,std::map<std::string,Assets> & assets)42 virtual DBStatus RemoveLocalAssets(const std::string &tableName, const std::string &gid, const Type &prefix, 43 std::map<std::string, Assets> &assets) 44 { 45 return DBStatus::OK; 46 } 47 48 struct AssetRecord { 49 const std::string gid; 50 const Type prefix; 51 std::map<std::string, Assets> assets; 52 DBStatus status = OK; 53 }; 54 BatchDownload(const std::string & tableName,std::vector<AssetRecord> & downloadAssets)55 virtual void BatchDownload(const std::string &tableName, std::vector<AssetRecord> &downloadAssets) 56 { 57 } 58 BatchRemoveLocalAssets(const std::string & tableName,std::vector<AssetRecord> & removeAssets)59 virtual void BatchRemoveLocalAssets(const std::string &tableName, std::vector<AssetRecord> &removeAssets) 60 { 61 } 62 CancelDownload()63 virtual DBStatus CancelDownload() 64 { 65 return OK; 66 } 67 }; 68 } // namespace DistributedDB 69 70 #endif // IASSET_LOADER_H