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 SINGLE_VER_SYNC_ENGINE_H 17 #define SINGLE_VER_SYNC_ENGINE_H 18 19 #include <mutex> 20 #include "sync_engine.h" 21 22 namespace DistributedDB { 23 class SingleVerSyncEngine final : public SyncEngine { 24 public: SingleVerSyncEngine()25 SingleVerSyncEngine() : needClearRemoteStaleData_(false) {}; 26 27 // If set true, remote stale data will be clear when remote db rebuilt. 28 void EnableClearRemoteStaleData(bool enable); 29 30 // used by SingleVerKVSyncer when db online 31 int StartAutoSubscribeTimer(const ISyncInterface &syncInterface) override; 32 33 // used by SingleVerKVSyncer when remote/local db closed 34 void StopAutoSubscribeTimer() override; 35 36 int SubscribeTimeOut(TimerId id); 37 38 DISABLE_COPY_ASSIGN_MOVE(SingleVerSyncEngine); 39 protected: ~SingleVerSyncEngine()40 ~SingleVerSyncEngine() override {}; 41 42 // Create a context 43 ISyncTaskContext *CreateSyncTaskContext(const ISyncInterface &syncInterface) override; 44 45 private: 46 DECLARE_OBJECT_TAG(SingleVerSyncEngine); 47 #ifndef RUNNING_ON_TESTCASE 48 static constexpr int SUBSCRIBE_TRIGGER_TIME_OUT = 30 * 60 * 1000; // 30min 49 #else 50 static constexpr int SUBSCRIBE_TRIGGER_TIME_OUT = 5 * 60 * 1000; // 5min for test 51 #endif 52 53 bool needClearRemoteStaleData_; 54 55 // for subscribe timeout callback 56 std::mutex timerLock_; 57 TimerId subscribeTimerId_ = 0; 58 }; 59 } // namespace DistributedDB 60 61 #endif // SINGLE_VER_SYNC_ENGINE_H