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 VIRTUAL_CLOUD_SYNCER_H
16 #define VIRTUAL_CLOUD_SYNCER_H
17 #include "cloud_syncer.h"
18 
19 namespace DistributedDB {
20 class VirtualCloudSyncer final : public CloudSyncer {
21 public:
22     explicit VirtualCloudSyncer(std::shared_ptr<StorageProxy> storageProxy);
23     ~VirtualCloudSyncer() override = default;
24 
25     int DoDownload(TaskId taskId, bool isFirstDownload) override;
26 
27     int DoDownloadInNeed(const CloudTaskInfo &taskInfo, const bool needUpload, bool isFirstDownload) override;
28 
29     int DoUpload(TaskId taskId, bool lastTable, LockAction lockAction) override;
30 
31     void SetSyncAction(bool doDownload, bool doUpload);
32 
33     void SetDownloadFunc(const std::function<int (void)> &);
34 
35     void SetDownloadInNeedFunc(const std::function<int ()> &);
36 
37     void SetTaskNeedUpload();
38 
39     void SetUploadFunc(const std::function<int (void)> &);
40 
41     void Notify(bool notifyIfError = false);
42 
43     size_t GetQueueCount();
44 
45     void SetCurrentTaskInfo(const SyncProcessCallback &callback, CloudSyncer::TaskId taskId);
46 
47     int CallTagStatusByStrategy(bool isExist, const DataInfoWithLog &localInfo, const LogInfo &cloudInfo,
48         OpType &strategyOpResult);
49 
50     void PauseCurrentTask();
51 private:
52     std::function<int (void)> downloadFunc_;
53     std::function<int (void)> downloadInNeedFunc_;
54     std::function<int (void)> uploadFunc_;
55     std::atomic<bool> doDownload_;
56     std::atomic<bool> doUpload_;
57 };
58 }
59 #endif // VIRTUAL_CLOUD_SYNCER_H
60