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 #include "kvdb_observer_handle.h"
16 #include "db_errno.h"
17 #include "log_print.h"
18 
19 namespace DistributedDB {
KvDBObserverHandle(uint32_t mode)20 KvDBObserverHandle::KvDBObserverHandle(uint32_t mode)
21     : mode_(mode)
22 {}
23 
~KvDBObserverHandle()24 KvDBObserverHandle::~KvDBObserverHandle()
25 {
26     for (auto &listener : listeners_) {
27         int errCode = listener->Drop(true);
28         if (errCode != E_OK) {
29             LOGE("Drop listener failed!");
30         }
31         listener = nullptr;
32     }
33 }
34 
InsertListener(NotificationChain::Listener * listener)35 void KvDBObserverHandle::InsertListener(NotificationChain::Listener *listener)
36 {
37     listeners_.push_back(listener);
38 }
39 
GetObserverMode() const40 uint32_t KvDBObserverHandle::GetObserverMode() const
41 {
42     return mode_;
43 }
44 } // namespace DistributedDB
45