1 /*
2  * Copyright (c) 2022 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 "iconnection.h"
16 
17 #include "runtime_context.h"
18 
19 namespace DistributedDB {
IConnection()20 IConnection::IConnection()
21     : connectionId_(0)
22 {
23 }
24 
GetConnectionId()25 uint64_t IConnection::GetConnectionId()
26 {
27     if (connectionId_ != 0) {
28         return connectionId_;
29     }
30     std::lock_guard<std::mutex> autoLock(connectionIdLock_);
31     // check again here, may be generated after get lock
32     if (connectionId_ == 0) {
33         connectionId_ = static_cast<uint64_t>(RuntimeContext::GetInstance()->GenerateSessionId());
34     }
35     return connectionId_;
36 }
37 }