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 KV_STORE_CHANGED_DATA_IMPL_H
17 #define KV_STORE_CHANGED_DATA_IMPL_H
18 
19 #include <mutex>
20 
21 #include "kv_store_changed_data.h"
22 #include "kvdb_commit_notify_data.h"
23 
24 namespace DistributedDB {
25 class KvStoreChangedDataImpl : public KvStoreChangedData {
26 public:
KvStoreChangedDataImpl(const KvDBCommitNotifyData * observerData)27     explicit KvStoreChangedDataImpl(const KvDBCommitNotifyData *observerData) : observerData_(observerData) {}
28     virtual ~KvStoreChangedDataImpl();
29 
30     DISABLE_COPY_ASSIGN_MOVE(KvStoreChangedDataImpl);
31 
32     const std::list<Entry> &GetEntriesInserted() const override;
33 
34     const std::list<Entry> &GetEntriesUpdated() const override;
35 
36     const std::list<Entry> &GetEntriesDeleted() const override;
37 
38     bool IsCleared() const override;
39 
40 private:
41     const KvDBCommitNotifyData *observerData_;
42     mutable std::mutex mutex_;
43     mutable std::list<Entry> insertedEntries_;
44     mutable std::list<Entry> updatedEntries_;
45     mutable std::list<Entry> deletedEntries_;
46 };
47 } // namespace DistributedDB
48 
49 #endif // KV_STORE_CHANGED_DATA_IMPL_H
50 
51