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 OHOS_DISTRIBUTED_HARDWARE_META_INFO_MANAGER_H 17 #define OHOS_DISTRIBUTED_HARDWARE_META_INFO_MANAGER_H 18 19 #include <condition_variable> 20 #include <map> 21 22 #include "kvstore_observer.h" 23 24 #include "db_adapter.h" 25 #include "event_handler.h" 26 #include "meta_capability_info.h" 27 28 class DBAdapter; 29 namespace OHOS { 30 namespace DistributedHardware { 31 class MetaInfoManager : public std::enable_shared_from_this<MetaInfoManager>, 32 public DistributedKv::KvStoreObserver { 33 public: 34 MetaInfoManager(const MetaInfoManager &) = delete; 35 MetaInfoManager &operator = (const MetaInfoManager &) = delete; 36 MetaInfoManager(MetaInfoManager &&) = delete; 37 MetaInfoManager &operator = (MetaInfoManager &&) = delete; 38 static std::shared_ptr<MetaInfoManager> GetInstance(); 39 MetaInfoManager(); 40 virtual ~MetaInfoManager(); 41 int32_t Init(); 42 int32_t UnInit(); 43 int32_t AddMetaCapInfos(const std::vector<std::shared_ptr<MetaCapabilityInfo>> &meatCapInfos); 44 int32_t SyncMetaInfoFromDB(const std::string &udidHash); 45 int32_t SyncRemoteMetaInfos(); 46 int32_t GetDataByKeyPrefix(const std::string &keyPrefix, MetaCapInfoMap &metaCapMap); 47 int32_t RemoveMetaInfoByKey(const std::string &key); 48 int32_t GetMetaCapInfo(const std::string &udidHash, const std::string &dhId, 49 std::shared_ptr<MetaCapabilityInfo> &metaCapPtr); 50 void GetMetaCapInfosByUdidHash(const std::string &udidHash, 51 std::vector<std::shared_ptr<MetaCapabilityInfo>> &metaCapInfos); 52 int32_t GetMetaDataByDHType(const DHType dhType, MetaCapInfoMap &metaInfoMap); 53 int32_t SyncDataByNetworkId(const std::string &networkId); 54 /* Database data changes callback */ 55 virtual void OnChange(const DistributedKv::ChangeNotification &changeNotification) override; 56 /* Cloud data changes callback */ 57 void OnChange(const DistributedKv::DataOrigin &origin, Keys &&keys) override; 58 59 class MetaInfoManagerEventHandler : public AppExecFwk::EventHandler { 60 public: 61 MetaInfoManagerEventHandler(const std::shared_ptr<AppExecFwk::EventRunner> runner, 62 std::shared_ptr<MetaInfoManager> metaInfoMgrPtr); 63 ~MetaInfoManagerEventHandler() override = default; 64 void ProcessEvent(const AppExecFwk::InnerEvent::Pointer &event) override; 65 private: 66 std::weak_ptr<MetaInfoManager> metaInfoMgrWPtr_; 67 }; 68 std::shared_ptr<MetaInfoManager::MetaInfoManagerEventHandler> GetEventHandler(); 69 70 private: 71 int32_t GetMetaCapByValue(const std::string &value, std::shared_ptr<MetaCapabilityInfo> &metaCapPtr); 72 void HandleMetaCapabilityAddChange(const std::vector<DistributedKv::Entry> &insertRecords); 73 void HandleMetaCapabilityUpdateChange(const std::vector<DistributedKv::Entry> &updateRecords); 74 void HandleMetaCapabilityDeleteChange(const std::vector<DistributedKv::Entry> &deleteRecords); 75 std::vector<DistributedKv::Entry> GetEntriesByKeys(const std::vector<std::string> &keys); 76 private: 77 mutable std::mutex metaInfoMgrMutex_; 78 std::shared_ptr<DBAdapter> dbAdapterPtr_; 79 MetaCapInfoMap globalMetaInfoMap_; 80 81 std::shared_ptr<MetaInfoManager::MetaInfoManagerEventHandler> eventHandler_; 82 }; 83 } // namespace DistributedHardware 84 } // namespace OHOS 85 #endif