1 /*
2  * Copyright (c) 2021-2023 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 OHOS_FORM_FWK_FORM_CACHE_MGR_H
16 #define OHOS_FORM_FWK_FORM_CACHE_MGR_H
17 
18 #include <map>
19 #include <mutex>
20 #include <singleton.h>
21 #include <string>
22 
23 #include "form_provider_data.h"
24 #include "form_rdb_data_mgr.h"
25 
26 namespace OHOS {
27 namespace AppExecFwk {
28 enum class CacheState {
29     DEFAULT = 0,
30     REBOOT = 1,
31 };
32 struct FormCache {
33     std::string formId;
34     std::string dataCache;
35     std::string imgCache;
36     CacheState cacheState = CacheState::DEFAULT;
37 };
38 /**
39  * @class FormCacheMgr
40  * Form cache data manager.
41  */
42 class FormCacheMgr final : public DelayedRefSingleton<FormCacheMgr> {
43 DECLARE_DELAYED_REF_SINGLETON(FormCacheMgr)
44 public:
45     DISALLOW_COPY_AND_MOVE(FormCacheMgr);
46 
47     void Start();
48 
49     bool AddData(int64_t formId, const FormProviderData &formProviderData);
50 
51     bool DeleteData(int64_t formId);
52 
53     bool GetData(int64_t formId, std::string &data,
54         std::map<std::string, std::pair<sptr<FormAshmem>, int32_t>> &imageDataMap) const;
55 
56     bool NeedAcquireProviderData(int64_t formId) const;
57 private:
58     void CreateFormCacheTable();
59     bool GetDataCacheFromDb(int64_t formId, FormCache &formCache) const;
60     bool SaveDataCacheToDb(int64_t formId, const FormCache &formCache);
61     bool DeleteDataCacheInDb(int64_t formId);
62     bool GetImgCacheFromDb(int64_t rowId, std::vector<uint8_t> &blob, int32_t &size) const;
63     bool SaveImgCacheToDb(const std::vector<uint8_t> &value, int32_t size, int64_t &rowId);
64     bool DeleteImgCacheInDb(const std::string &rowId);
65 
66     bool AddCacheData(const FormProviderData &formProviderData, FormCache &formCache);
67     bool AddImgData(const FormProviderData &formProviderData, FormCache &formCache);
68     bool AddImgDataToDb(
69         const FormProviderData &formProviderData, nlohmann::json &imgDataJson);
70     bool GetImageDataFromAshmem(
71         const std::string& picName, const sptr<Ashmem> &ashmem, int32_t len, std::vector<uint8_t> &value);
72     bool InnerGetImageData(const FormCache &formCache,
73         std::map<std::string, std::pair<sptr<FormAshmem>, int32_t>> &imageDataMap) const;
74     void ResetCacheStateAfterReboot();
75 
76     mutable std::mutex cacheMutex_;
77 };
78 }  // namespace AppExecFwk
79 }  // namespace OHOS
80 
81 #endif // OHOS_FORM_FWK_FORM_CACHE_MGR_H
82