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 DAEMON_H 17 #define DAEMON_H 18 19 #include <mutex> 20 21 #include "daemon_stub.h" 22 #include "i_daemon.h" 23 #include "iremote_stub.h" 24 #include "multiuser/os_account_observer.h" 25 #include "system_ability.h" 26 27 namespace OHOS { 28 namespace Storage { 29 namespace DistributedFile { 30 enum class ServiceRunningState { STATE_NOT_START, STATE_RUNNING }; 31 32 class Daemon final : public SystemAbility, public DaemonStub, protected NoCopyable { 33 DECLARE_SYSTEM_ABILITY(Daemon); 34 35 public: SystemAbility(saID,runOnCreate)36 explicit Daemon(int32_t saID, bool runOnCreate = true) : SystemAbility(saID, runOnCreate) {}; 37 virtual ~Daemon() = default; 38 39 void OnStart() override; 40 void OnStop() override; QueryServiceState()41 ServiceRunningState QueryServiceState() const 42 { 43 return state_; 44 } 45 46 int32_t EchoServerDemo(const std::string &echoStr) override; 47 48 private: 49 Daemon(); 50 ServiceRunningState state_ { ServiceRunningState::STATE_NOT_START }; 51 static sptr<Daemon> instance_; 52 static std::mutex instanceLock_; 53 bool registerToService_ { false }; 54 std::shared_ptr<OsAccountObserver> subScriber_; 55 void PublishSA(); 56 void RegisterOsAccount(); 57 }; 58 } // namespace DistributedFile 59 } // namespace Storage 60 } // namespace OHOS 61 #endif // DAEMON_H