| /* |
| * 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 __OFFSETSTORE_H__ |
| #define __OFFSETSTORE_H__ |
| |
| #include <boost/asio.hpp> |
| #include <boost/thread/mutex.hpp> |
| #include <boost/thread/thread.hpp> |
| #include <map> |
| #include "MQMessageQueue.h" |
| #include "SessionCredentials.h" |
| |
| namespace rocketmq { |
| class MQClientFactory; |
| //<!*************************************************************************** |
| enum ReadOffsetType { |
| // read offset from memory |
| READ_FROM_MEMORY, |
| // read offset from remoting |
| READ_FROM_STORE, |
| // read offset from memory firstly, then from remoting |
| MEMORY_FIRST_THEN_STORE, |
| }; |
| |
| //<!*************************************************************************** |
| class OffsetStore { |
| public: |
| OffsetStore(const std::string& groupName, MQClientFactory*); |
| virtual ~OffsetStore(); |
| |
| virtual void load() = 0; |
| virtual void updateOffset(const MQMessageQueue& mq, int64 offset) = 0; |
| virtual int64 readOffset(const MQMessageQueue& mq, |
| ReadOffsetType type, |
| const SessionCredentials& session_credentials) = 0; |
| virtual void persist(const MQMessageQueue& mq, const SessionCredentials& session_credentials) = 0; |
| virtual void persistAll(const std::vector<MQMessageQueue>& mq) = 0; |
| virtual void removeOffset(const MQMessageQueue& mq) = 0; |
| |
| protected: |
| std::string m_groupName; |
| typedef std::map<MQMessageQueue, int64> MQ2OFFSET; |
| MQ2OFFSET m_offsetTable; |
| MQClientFactory* m_pClientFactory; |
| boost::mutex m_lock; |
| }; |
| |
| //<!*************************************************************************** |
| class LocalFileOffsetStore : public OffsetStore { |
| public: |
| LocalFileOffsetStore(const std::string& groupName, MQClientFactory*); |
| virtual ~LocalFileOffsetStore(); |
| |
| virtual void load(); |
| virtual void updateOffset(const MQMessageQueue& mq, int64 offset); |
| virtual int64 readOffset(const MQMessageQueue& mq, |
| ReadOffsetType type, |
| const SessionCredentials& session_credentials); |
| virtual void persist(const MQMessageQueue& mq, const SessionCredentials& session_credentials); |
| virtual void persistAll(const std::vector<MQMessageQueue>& mq); |
| virtual void removeOffset(const MQMessageQueue& mq); |
| |
| private: |
| std::string m_storePath; |
| std::string m_storeFile; |
| }; |
| |
| //<!*************************************************************************** |
| class RemoteBrokerOffsetStore : public OffsetStore { |
| public: |
| RemoteBrokerOffsetStore(const std::string& groupName, MQClientFactory*); |
| virtual ~RemoteBrokerOffsetStore(); |
| |
| virtual void load(); |
| virtual void updateOffset(const MQMessageQueue& mq, int64 offset); |
| virtual int64 readOffset(const MQMessageQueue& mq, |
| ReadOffsetType type, |
| const SessionCredentials& session_credentials); |
| virtual void persist(const MQMessageQueue& mq, const SessionCredentials& session_credentials); |
| virtual void persistAll(const std::vector<MQMessageQueue>& mq); |
| virtual void removeOffset(const MQMessageQueue& mq); |
| |
| private: |
| void updateConsumeOffsetToBroker(const MQMessageQueue& mq, |
| int64 offset, |
| const SessionCredentials& session_credentials); |
| int64 fetchConsumeOffsetFromBroker(const MQMessageQueue& mq, const SessionCredentials& session_credentials); |
| }; |
| //<!*************************************************************************** |
| } // namespace rocketmq |
| |
| #endif |