1 /*
2  * Copyright (c) 2024 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 OHOS_DM_KV_ADAPTER_H
17 #define OHOS_DM_KV_ADAPTER_H
18 
19 #include <atomic>
20 #include <condition_variable>
21 #include <map>
22 #include <memory>
23 #include <string>
24 #include <unordered_set>
25 #include <vector>
26 
27 #include "dm_kv_info.h"
28 #include "distributed_kv_data_manager.h"
29 #include "kvstore_death_recipient.h"
30 #include "kvstore_observer.h"
31 
32 namespace OHOS {
33 namespace DistributedHardware {
34 class KVAdapter : public DistributedKv::KvStoreDeathRecipient, public std::enable_shared_from_this<KVAdapter> {
35 public:
36     KVAdapter() = default;
37     virtual ~KVAdapter() = default;
38     int32_t Init();
39     void UnInit();
40     int32_t ReInit();
41     int32_t Put(const std::string &key, const std::string &value);
42     int32_t Get(const std::string &key, std::string &value);
43     int32_t DeleteKvStore();
44     int32_t DeleteByAppId(const std::string &appId, const std::string &prefix);
45     int32_t DeleteBatch(const std::vector<std::string> &keys);
46     void OnRemoteDied() override;
47 
48 private:
49     DistributedKv::Status GetLocalKvStorePtr();
50     void RegisterKvStoreDeathListener();
51     void UnregisterKvStoreDeathListener();
52 
53 private:
54     DistributedKv::AppId appId_;
55     DistributedKv::StoreId storeId_;
56     DistributedKv::DistributedKvDataManager kvDataMgr_;
57     DistributedKv::DataType dataType_ = DistributedKv::DataType::TYPE_STATICS;
58     std::shared_ptr<DistributedKv::SingleKvStore> kvStorePtr_ = nullptr;
59     std::mutex kvAdapterMutex_;
60     std::atomic<bool> isInited_ = false;
61 };
62 } // namespace DistributedHardware
63 } // namespace OHOS
64 #endif // OHOS_DM_KV_ADAPTER_H
65