1 /* 2 * Copyright (c) 2021 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_ABILITY_RUNTIME_DATAOBS_MGR_SERVICE_H 17 #define OHOS_ABILITY_RUNTIME_DATAOBS_MGR_SERVICE_H 18 19 #include <memory> 20 #include <singleton.h> 21 #include <thread_ex.h> 22 #include <unordered_map> 23 24 #include "dataobs_mgr_inner.h" 25 #include "dataobs_mgr_stub.h" 26 #include "hilog_wrapper.h" 27 #include "iremote_object.h" 28 #include "system_ability.h" 29 #include "uri.h" 30 #include "event_runner.h" 31 #include "event_handler.h" 32 33 namespace OHOS { 34 namespace AAFwk { 35 using EventRunner = OHOS::AppExecFwk::EventRunner; 36 using EventHandler = OHOS::AppExecFwk::EventHandler; 37 enum class DataObsServiceRunningState { STATE_NOT_START, STATE_RUNNING }; 38 39 /** 40 * @class DataObsMgrService 41 * DataObsMgrService provides a facility for dataobserver. 42 */ 43 class DataObsMgrService : public SystemAbility, 44 public DataObsManagerStub, 45 public std::enable_shared_from_this<DataObsMgrService> { 46 DECLARE_DELAYED_SINGLETON(DataObsMgrService) 47 DECLEAR_SYSTEM_ABILITY(DataObsMgrService) 48 public: 49 void OnStart() override; 50 void OnStop() override; 51 DataObsServiceRunningState QueryServiceState() const; 52 53 virtual int RegisterObserver(const Uri &uri, const sptr<IDataAbilityObserver> &dataObserver) override; 54 virtual int UnregisterObserver(const Uri &uri, const sptr<IDataAbilityObserver> &dataObserver) override; 55 virtual int NotifyChange(const Uri &uri) override; 56 57 /** 58 * @brief DataObs hidumper. 59 * @param fd Indicates the fd. 60 * @param args Indicates the params. 61 * @return Returns the dump result. 62 */ 63 int Dump(int fd, const std::vector<std::u16string>& args) override; 64 65 /** 66 * GetEventHandler, get the dataobs manager service's handler. 67 * 68 * @return Returns EventHandler ptr. 69 */ 70 std::shared_ptr<EventHandler> GetEventHandler(); 71 72 private: 73 bool Init(); 74 void Dump(const std::vector<std::u16string>& args, std::string& result) const; 75 void ShowHelp(std::string& result) const; 76 77 private: 78 std::shared_ptr<EventRunner> eventLoop_; 79 std::shared_ptr<EventHandler> handler_; 80 DataObsServiceRunningState state_; 81 std::shared_ptr<DataObsMgrInner> dataObsMgrInner_; 82 const int taskMax_ = 50; 83 }; 84 } // namespace AAFwk 85 } // namespace OHOS 86 #endif // OHOS_ABILITY_RUNTIME_DATAOBS_MGR_SERVICE_H 87