1 /*
2  * Copyright (c) 2023-2024 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 #ifndef HIAPPEVENT_INTERFACES_NATIVE_INNER_API_INCLUDE_OS_EVENT_LISTENER_H
16 #define HIAPPEVENT_INTERFACES_NATIVE_INNER_API_INCLUDE_OS_EVENT_LISTENER_H
17 
18 #include <string>
19 #include <thread>
20 #include <vector>
21 
22 #include "json/json.h"
23 
24 namespace OHOS {
25 namespace HiviewDFX {
26 class AppEventPack;
27 
28 class OsEventListener : public std::enable_shared_from_this<OsEventListener> {
29 public:
30     OsEventListener();
31     ~OsEventListener();
32     bool StartListening();
33     bool RemoveOsEventDir();
34     void GetEvents(std::vector<std::shared_ptr<AppEventPack>>& events);
35     bool AddListenedEvents(uint64_t eventsMask);
36     bool SetListenedEvents(uint64_t eventsMask);
37 
38 private:
39     void Init();
40     bool InitDir(const std::string& dirPath);
41     bool RegisterDirListener(const std::string& dirPath);
42     void HandleDirEvent();
43     void HandleInotify(const std::string& files);
44     void GetEventsFromFiles(const std::vector<std::string>& files, std::vector<std::shared_ptr<AppEventPack>>& events);
45     std::shared_ptr<AppEventPack> GetAppEventPackFromJson(const std::string& jsonStr);
46 
47 private:
48     int inotifyFd_ = -1;
49     int inotifyWd_ = -1;
50     bool inotifyStopFlag_ = true;
51     std::string osEventPath_;
52     std::unique_ptr<std::thread> inotifyThread_ = nullptr;
53     std::vector<std::shared_ptr<AppEventPack>> historyEvents_;
54     uint64_t osEventsMask_ = 0;
55 };
56 } // namespace HiviewDFX
57 } // namespace OHOS
58 #endif // HIAPPEVENT_INTERFACES_NATIVE_INNER_API_INCLUDE_OS_EVENT_LISTENER_H