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 #include "kv_store_changed_data_impl.h"
17 
18 namespace DistributedDB {
~KvStoreChangedDataImpl()19 KvStoreChangedDataImpl::~KvStoreChangedDataImpl()
20 {
21     observerData_ = nullptr;
22 }
23 
GetEntriesInserted() const24 const std::list<Entry> &KvStoreChangedDataImpl::GetEntriesInserted() const
25 {
26     std::lock_guard<std::mutex> lock(mutex_);
27     if (insertedEntries_.empty() && observerData_ != nullptr) {
28         int errCode;
29         insertedEntries_ = observerData_->GetInsertedEntries(errCode);
30     }
31 
32     return insertedEntries_;
33 }
34 
GetEntriesUpdated() const35 const std::list<Entry> &KvStoreChangedDataImpl::GetEntriesUpdated() const
36 {
37     std::lock_guard<std::mutex> lock(mutex_);
38     if (updatedEntries_.empty() && observerData_ != nullptr) {
39         int errCode;
40         updatedEntries_ = observerData_->GetUpdatedEntries(errCode);
41     }
42 
43     return updatedEntries_;
44 }
45 
GetEntriesDeleted() const46 const std::list<Entry> &KvStoreChangedDataImpl::GetEntriesDeleted() const
47 {
48     std::lock_guard<std::mutex> lock(mutex_);
49     if (deletedEntries_.empty() && observerData_ != nullptr) {
50         int errCode;
51         deletedEntries_ = observerData_->GetDeletedEntries(errCode);
52     }
53 
54     return deletedEntries_;
55 }
56 
IsCleared() const57 bool KvStoreChangedDataImpl::IsCleared() const
58 {
59     if (observerData_ != nullptr) {
60         return observerData_->IsCleared();
61     }
62 
63     return false;
64 }
65 } // namespace DistributedDB
66 
67