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 LINK_MANAGER_H
17 #define LINK_MANAGER_H
18 
19 #include <atomic>
20 #include <map>
21 #include <mutex>
22 #include <functional>
23 #include "inner_link.h"
24 #include "wifi_direct_types.h"
25 
26 namespace OHOS::SoftBus {
27 class LinkManager {
28 public:
GetInstance()29     static LinkManager& GetInstance()
30     {
31         static LinkManager instance;
32         return instance;
33     }
34 
35     using Handler = std::function<void(InnerLink &)>;
36     using Checker = std::function<bool(InnerLink &)>;
37 
38     int AllocateLinkId();
39     std::shared_ptr<InnerLink> GetLinkById(int linkId);
40 
41     void ForEach(const Checker &checker);
42     bool ProcessIfPresent(InnerLink::LinkType type, const std::string &remoteDeviceId, const Handler &handler);
43     bool ProcessIfAbsent(InnerLink::LinkType type, const std::string &remoteDeviceId, const Handler &handler);
44 
45     bool ProcessIfPresent(const std::string &remoteMac, const Handler &handler);
46     bool ProcessIfAbsent(const std::string &remoteMac, const Handler &handler);
47 
48     bool ProcessIfPresent(int linkId, const Handler &handler);
49     void RemoveLink(InnerLink::LinkType type, const std::string &remoteDeviceId);
50     void RemoveLink(const std::string &remoteMac);
51     void RemoveLinks(InnerLink::LinkType type);
52 
53     void GetAllLinksBasicInfo(std::vector<InnerLinkBasicInfo> &infos);
54 
55     std::shared_ptr<InnerLink> GetReuseLink(const std::string &remoteMac);
56     std::shared_ptr<InnerLink> GetReuseLink(WifiDirectConnectType connectType, const std::string &remoteDeviceId);
57     std::shared_ptr<InnerLink> GetReuseLink(WifiDirectLinkType linkType, const std::string &remoteDeviceId);
58     void RefreshRelationShip(const std::string &remoteDeviceId, const std::string &remoteMac);
59 
60     void Dump() const;
61 
62 private:
63     mutable std::recursive_mutex lock_;
64     /* key = {LinkType, RemoteDeviceId} */
65     std::map<std::pair<InnerLink::LinkType, std::string>, std::shared_ptr<InnerLink>> links_;
66     std::atomic<int> currentLinkId_ = 0;
67 };
68 }
69 #endif
70