1 /* 2 * Copyright (c) 2023 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 DATASHARESERVICE_RDB_SUBSCRIBER_MANAGER_H 17 #define DATASHARESERVICE_RDB_SUBSCRIBER_MANAGER_H 18 19 #include <list> 20 #include <string> 21 22 #include "concurrent_map.h" 23 #include "context.h" 24 #include "data_proxy_observer.h" 25 #include "datashare_template.h" 26 #include "executor_pool.h" 27 namespace OHOS::DataShare { 28 struct Key { 29 Key(const std::string &uri, int64_t subscriberId, const std::string &bundleName); 30 bool operator==(const Key &rhs) const; 31 bool operator!=(const Key &rhs) const; 32 bool operator<(const Key &rhs) const; 33 bool operator>(const Key &rhs) const; 34 bool operator<=(const Key &rhs) const; 35 bool operator>=(const Key &rhs) const; 36 const std::string uri; 37 const int64_t subscriberId; 38 const std::string bundleName; 39 }; 40 class TemplateManager { 41 public: 42 static TemplateManager &GetInstance(); 43 int32_t Add(const Key &key, int32_t userId, const Template &tpl); 44 int32_t Delete(const Key &key, int32_t userId); 45 bool Get(const Key &key, int32_t userId, Template &tpl); 46 47 private: 48 TemplateManager(); 49 friend class RdbSubscriberManager; 50 }; 51 52 class RdbSubscriberManager { 53 public: 54 static RdbSubscriberManager &GetInstance(); 55 int Add(const Key &key, const sptr<IDataProxyRdbObserver> observer, std::shared_ptr<Context> context, 56 std::shared_ptr<ExecutorPool> executorPool); 57 int Delete(const Key &key, uint32_t firstCallerTokenId); 58 void Delete(uint32_t callerTokenId); 59 int Disable(const Key &key, uint32_t firstCallerTokenId); 60 int Enable(const Key &key, std::shared_ptr<Context> context); 61 void Emit(const std::string &uri, int64_t subscriberId, std::shared_ptr<Context> context); 62 void Emit(const std::string &uri, std::shared_ptr<Context> context); 63 void EmitByKey(const Key &key, int32_t userId, const std::string &rdbPath, int version); 64 std::vector<Key> GetKeysByUri(const std::string &uri); 65 void Clear(); 66 67 private: 68 struct ObserverNode { 69 ObserverNode(const sptr<IDataProxyRdbObserver> &observer, uint32_t firstCallerTokenId, 70 uint32_t callerTokenId = 0); 71 sptr<IDataProxyRdbObserver> observer; 72 uint32_t firstCallerTokenId; 73 uint32_t callerTokenId; 74 bool enabled = true; 75 bool isNotifyOnEnabled = false; 76 }; 77 78 RdbSubscriberManager() = default; 79 ConcurrentMap<Key, std::vector<ObserverNode>> rdbCache_; 80 int Notify(const Key &key, int32_t userId, const std::vector<ObserverNode> &val, const std::string &rdbDir, 81 int rdbVersion); 82 int GetEnableObserverCount(const Key &key); 83 void SetObserverNotifyOnEnabled(std::vector<ObserverNode> &nodes); 84 }; 85 } // namespace OHOS::DataShare 86 #endif 87