| /** |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you under the Apache License, Version 2.0 (the |
| * "License"); you may not use this file except in compliance |
| * with the License. You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, |
| * software distributed under the License is distributed on an |
| * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY |
| * KIND, either express or implied. See the License for the |
| * specific language governing permissions and limitations |
| * under the License. |
| */ |
| |
| #ifndef __TMANAGER_STATEFUL_RESTORER_H_ |
| #define __TMANAGER_STATEFUL_RESTORER_H_ |
| |
| #include <set> |
| #include <string> |
| #include "manager/tmanager.h" |
| |
| namespace heron { |
| namespace tmanager { |
| |
| class StatefulRestorer { |
| public: |
| StatefulRestorer(); |
| virtual ~StatefulRestorer(); |
| // Start a new 2 Phase Commit with this checkpoint_id |
| void StartRestore(const std::string& _ckeckpoint_id, |
| const StMgrMap& _stmgrs); |
| void HandleStMgrRestored(const std::string& _stmgr_id, |
| const std::string& _ckeckpoint_id, |
| int64_t _restore_txid, |
| const StMgrMap& _stmgrs); |
| |
| bool GotResponse(const std::string& _stmgr) const; |
| |
| // accessor functions |
| bool IsInProgress() const { return in_progress_; } |
| int64_t GetRestoreTxid() const { return restore_txid_; } |
| const std::string& GetCheckpointIdInProgress() const { return checkpoint_id_in_progress_; } |
| |
| private: |
| void Finish2PhaseCommit(const StMgrMap& _stmgrs); |
| bool in_progress_; |
| int64_t restore_txid_; |
| std::string checkpoint_id_in_progress_; |
| std::set<std::string> unreplied_stmgrs_; |
| }; |
| } // namespace tmanager |
| } // namespace heron |
| |
| #endif |