MVC Design in Web backend Server
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1. The document discusses the design of DM and different approaches to message handling, including an Old Msg Selector, DLL Factory, and Object Message Factory. 2. Issues with the Old Msg Selector approach include difficulty in debugging, duplicative code across messages, and inability to reuse logic. 3. The DLL Factory approach separates message implementation from the server base but makes debugging harder. 4. The Object Message Factory approach uses a MessageProcessorFactory and base MessageProcessor class to better separate and reuse message handling logic.
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MVC Design in Web backend Server
- 6. DM的設計 正片開始
- 7. Message Selector Server共用基底 Request Msg Pool Process Timer List
- 8. Server共用基底 Request Msg Pool Process Timer List DLL Factory Obj Msg Factory Old Msg Selector
- 9. Server共用基底 Request Msg Pool Process Timer List DLL Factory Obj Msg Factory Old Msg Selector 重構
- 10. Server共用基底 Request Msg Pool Process Timer List DLL Factory Obj Msg Factory
- 12. Old Msg Selector oldDispatchMessaeg(m_MessageId, m_ChannelId, m_Transaction);
- 13. Old Msg Selector void SuServiceKernel::oldDispatchMessaeg( string m_MessageId, string m_ChannelId... ) { while( true ) { try { if( m_MessageId == SuMessage::MESSAGE_REPORT_USER_ACCOUNT_REQUEST ) { DoReportUserAccountRequest(m_ChannelId, m_MessageId, m_Transaction); SendReply(m_ChannelId, SuMessage::MESSAGE_REPORT_USER_ACCOUNT_REPLY, m_Transaction); break; } //...more if without else } catch(...) { } break; } }
- 14. Old Msg Selector void SuServiceKernel::oldDispatchMessaeg( string m_MessageId, string m_ChannelId... ) { while( true ) { try { if( m_MessageId == SuMessage::MESSAGE_REPORT_USER_ACCOUNT_REQUEST ) { DoReportUserAccountRequest(m_ChannelId, m_MessageId, m_Transaction); SendReply(m_ChannelId, SuMessage::MESSAGE_REPORT_USER_ACCOUNT_REPLY, m_Transaction); break; } //...more if without else } catch(...) { } break; } } 一個Message要做的事
- 15. Old Msg Selector void SuServiceKernel::oldDispatchMessaeg( string m_MessageId, string m_ChannelId... ) { while( true ) { try { if( m_MessageId == SuMessage::MESSAGE_REPORT_USER_ACCOUNT_REQUEST ) { DoReportUserAccountRequest(m_ChannelId, m_MessageId, m_Transaction); SendReply(m_ChannelId, SuMessage::MESSAGE_REPORT_USER_ACCOUNT_REPLY, m_Transaction); break; } //...more if without else } catch(...) { } break; } }
- 16. Old Msg Selector void SuServiceKernel::oldDispatchMessaeg( string m_MessageId, string m_ChannelId... ) { while( true ) { try { if( m_MessageId == SuMessage::MESSAGE_REPORT_USER_ACCOUNT_REQUEST ) { DoReportUserAccountRequest(m_ChannelId, m_MessageId, m_Transaction); SendReply(m_ChannelId, SuMessage::MESSAGE_REPORT_USER_ACCOUNT_REPLY, m_Transaction); break; } //...more if without else } catch(...) { } break; } } Message is function
- 17. Old Msg Selector SuServiceKernel ServiceImpl ServiceTransactions ServiceKernel
- 18. Old Msg Selector SuServiceKernel ServiceImpl ServiceKernel Msg -> Struct Try-catch transaction CRUD to SQL 和一些邏輯 ServiceTransactions
- 19. Old Msg Selector SuServiceKernel ServiceImpl ServiceTransactions DB
- 21. Old Msg Selector • 優點 • 免洗筷開發很快。 • 缺點 • 大量使用MARCO, 難以debug • 一支Message要coding三個地方 • SuServiceKernel 相同Table, 不同Message的Xml處理無法共用 • ServiceImpl大多數的code和其它Message相同卻無法共用 • ServiceTransactions 不同Message，相同Table的邏輯不共用，曝露太多細節。 (欲知更多詳情，可以看看code)
- 22. DLL Factory KDoTier2ServerManager::DispatchMessage (m_ChannelId, m_MessageId, m_MessageType, m_IsMonitor, m_Transaction);
- 23. DLL Factory bool isDllMsg = KDoTier2ServerManager::DispatchMessage (m_ChannelId, m_MessageId, m_MessageType, m_IsMonitor, m_Transaction); if (isDllMsg) { // processed by plugin dll }
- 24. DLL Factory • 有興趣再來聊聊二次開發吧 • 其它的細節都在KgsLib • 優點 • 分散編譯負擔 • 隔離Server共用基礎實作與Message實作 • 缺點 • debug比較辛苦(要掛載執行檔才可以對dll做debug)
- 25. Object Message Factory cv_MessageProcessorFactory.CreateMessageProcessorObject (m_ChannelId, m_MessageId, m_MessageType, m_IsMonitor, m_Transaction);
- 26. Object Message Factory KMessageProcessorBase* message_process_obj = cv_MessageProcessorFactory.CreateMessageProcessorObject (m_ChannelId, m_MessageId, m_MessageType, m_IsMonitor, m_Transaction); if( message_process_obj ) { message_process_obj->ExecuteProcess(); SendReply(message_process_obj->GetChannelId(), message_process_obj->GetMessageId(), m_Transaction); delete message_process_obj; } https://zh.wikipedia.org/wiki/%E6%83%B0%E6%80%A7%E5%88%9D%E5%A7%8B%E6%A8%A1%E5%BC%8F#C.2B.2B
- 27. Object Message Factory MessageProcessorFactory ----------------------------------------------- CreateMessageProcessorObject map<string, MsgConstructor> cv_FunctionMap KMessageProcessorBase -------------------------------------- ExecuteProcess() Message MessageMessage
- 28. Object Message Factory CUDReply ---------------------------- KDoTransaction RReply MessageProcessorFactory ----------------------------------------------- CreateMessageProcessorObject map<string, MsgConstructor> cv_FunctionMap KMessageProcessorBase -------------------------------------- ExecuteProcess() Message MessageMessageMessage MessageMessage
- 32. 處理Xml邏輯、Table邏輯 Organization1 obj(xxxx); obj.Function(); //呼叫TableObject1的funciton Obj->Function(); //呼叫KDoObject的funciton
- 34. TableObject1 先說說
- 35. 以Organization1為例 1. 建構子、=運算子 2. ->運算子 3. 資料操作 4. 組合Xml
- 41. TableObjectList1 1. 建構子 2. 資料處理 3. 組Xml