1 /* 2 * Copyright (c) 2021-2024 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 COMMUNICATIONNETSTACK_EVENT_MANAGER_H 17 #define COMMUNICATIONNETSTACK_EVENT_MANAGER_H 18 19 #include <atomic> 20 #include <condition_variable> 21 #include <iosfwd> 22 #include <list> 23 #include <memory> 24 #include <mutex> 25 #include <queue> 26 #include <string> 27 #include <unordered_set> 28 #include <utility> 29 30 #include "event_listener.h" 31 #include "napi/native_api.h" 32 #include "uv.h" 33 34 namespace OHOS::NetStack { 35 static constexpr const uint32_t EVENT_MANAGER_MAGIC_NUMBER = 0x86161616; 36 37 namespace Websocket { 38 class UserData; 39 } 40 41 class EventManager : public std::enable_shared_from_this<EventManager> { 42 public: 43 EventManager(); 44 45 ~EventManager(); 46 47 EventManager(const EventManager &) = delete; 48 EventManager &operator=(const EventManager &manager) = delete; 49 50 void AddListener(napi_env env, const std::string &type, napi_value callback, bool once, bool asyncCallback); 51 52 void DeleteListener(const std::string &type, napi_value callback); 53 54 void Emit(const std::string &type, const std::pair<napi_value, napi_value> &argv); 55 56 void SetData(void *data); 57 58 [[nodiscard]] void *GetData(); 59 60 void EmitByUv(const std::string &type, void *data, void(Handler)(uv_work_t *, int status)); 61 62 void EmitByUvWithoutCheck(const std::string &type, void *data, void(Handler)(uv_work_t *, int status)); 63 64 void EmitByUvWithoutCheckShared(const std::string &type, void *data, void(Handler)(uv_work_t *, int status)); 65 66 bool HasEventListener(const std::string &type); 67 68 void DeleteListener(const std::string &type); 69 70 static void SetInvalid(EventManager *manager); 71 72 static bool IsManagerValid(EventManager *manager); 73 74 static void SetValid(EventManager *manager); 75 76 void SetQueueData(void *data); 77 78 void *GetQueueData(); 79 80 void CreateEventReference(napi_env env, napi_value value); 81 82 void DeleteEventReference(napi_env env); 83 84 void SetEventDestroy(bool flag); 85 86 bool IsEventDestroy(); 87 88 const std::string &GetWebSocketTextData(); 89 90 void AppendWebSocketTextData(void *data, size_t length); 91 92 const std::string &GetWebSocketBinaryData(); 93 94 void AppendWebSocketBinaryData(void *data, size_t length); 95 96 void ClearWebSocketTextData(); 97 98 void ClearWebSocketBinaryData(); 99 100 void NotifyRcvThdExit(); 101 102 void WaitForRcvThdExit(); 103 104 void SetReuseAddr(bool reuse); 105 106 void SetWebSocketUserData(const std::shared_ptr<Websocket::UserData> &userData); 107 108 std::shared_ptr<Websocket::UserData> GetWebSocketUserData(); 109 110 bool GetReuseAddr(); 111 112 private: 113 std::mutex mutexForListenersAndEmitByUv_; 114 std::mutex mutexForEmitAndEmitByUv_; 115 std::mutex dataMutex_; 116 std::mutex dataQueueMutex_; 117 std::list<EventListener> listeners_; 118 void *data_; 119 std::queue<void *> dataQueue_; 120 static std::mutex mutexForManager_; 121 static std::unordered_set<EventManager *> validManager_; 122 napi_ref eventRef_; 123 std::atomic_bool isDestroy_; 124 std::string webSocketTextData_; 125 std::string webSocketBinaryData_; 126 std::mutex sockRcvThdMtx_; 127 std::condition_variable sockRcvThdCon_; 128 bool sockRcvExit_ = false; 129 std::atomic_bool isReuseAddr_ = false; 130 std::shared_ptr<Websocket::UserData> webSocketUserData_; 131 132 public: 133 struct { 134 uint32_t magicNumber = EVENT_MANAGER_MAGIC_NUMBER; 135 } innerMagic_; 136 }; 137 138 struct UvWorkWrapper { 139 UvWorkWrapper() = delete; 140 141 UvWorkWrapper(void *theData, napi_env theEnv, std::string eventType, EventManager *eventManager); 142 143 void *data = nullptr; 144 napi_env env = nullptr; 145 std::string type; 146 EventManager *manager = nullptr; 147 }; 148 149 class EventManagerForHttp { 150 private: 151 [[maybe_unused]] std::mutex mutexForListenersAndEmitByUv_; 152 [[maybe_unused]] std::mutex mutexForEmitAndEmitByUv_; 153 [[maybe_unused]] std::mutex dataMutex_; 154 [[maybe_unused]] std::mutex dataQueueMutex_; 155 [[maybe_unused]] std::list<EventListener> listeners_; 156 [[maybe_unused]] void *data_ = nullptr; 157 [[maybe_unused]] std::queue<void *> dataQueue_; 158 [[maybe_unused]] static std::mutex mutexForManager_; 159 [[maybe_unused]] static std::unordered_set<EventManager *> validManager_; 160 [[maybe_unused]] napi_ref eventRef_ = nullptr; 161 [[maybe_unused]] std::atomic_bool isDestroy_; 162 [[maybe_unused]] std::string webSocketTextData_; 163 [[maybe_unused]] std::string webSocketBinaryData_; 164 [[maybe_unused]] std::mutex sockRcvThdMtx_; 165 [[maybe_unused]] std::condition_variable sockRcvThdCon_; 166 [[maybe_unused]] bool sockRcvExit_ = false; 167 [[maybe_unused]] std::atomic_bool isReuseAddr_ = false; 168 [[maybe_unused]] std::shared_ptr<Websocket::UserData> webSocketUserData_; 169 170 public: 171 [[maybe_unused]] struct { 172 uint32_t magicNumber = EVENT_MANAGER_MAGIC_NUMBER; 173 } innerMagic_; 174 }; 175 176 struct EventManagerWrapper { 177 EventManagerForHttp eventManager; 178 std::shared_ptr<EventManager> sharedManager; 179 }; 180 181 struct UvWorkWrapperShared { 182 UvWorkWrapperShared() = delete; 183 184 UvWorkWrapperShared(void *theData, napi_env theEnv, std::string eventType, 185 const std::shared_ptr<EventManager> &eventManager); 186 187 void *data = nullptr; 188 napi_env env = nullptr; 189 std::string type; 190 std::shared_ptr<EventManager> manager; 191 }; 192 } // namespace OHOS::NetStack 193 #endif /* COMMUNICATIONNETSTACK_EVENT_MANAGER_H */ 194