《即时系统开发》PPT课件.ppt

《《即时系统开发》PPT课件.ppt》由会员分享，可在线阅读，更多相关《《即时系统开发》PPT课件.ppt（34页珍藏版）》请在淘文阁 - 分享文档赚钱的网站上搜索。

1、國立台灣大學國立台灣大學資訊工程學系資訊工程學系薛智文http:/www.csie.ntu.edu.tw/chsueh/95 FallReal-Time System Development即時系統開發即時系統開發SOAService-Oriented Architecture10/25/20220 資工系網媒所資工系網媒所 NEWS實驗室實驗室Preface变变“亚太营运中心亚太营运中心”为为“全球运筹中心全球运筹中心 經濟現況與展望,930618,何美玥台灣經濟的願景與出路,930929,何美玥,凱達格蘭學校女性公共事務領導班Enterprise MiddlewareSOAThings s

2、hould be made as simple as possible,but no simpler.-Albert Einstein Simple is not easy!10/25/20221 資工系網媒所資工系網媒所 NEWS實驗室實驗室10/25/20222 資工系網媒所資工系網媒所 NEWS實驗室實驗室參、經濟施政之重點參、經濟施政之重點10/25/20223 資工系網媒所資工系網媒所 NEWS實驗室實驗室一、致力創意及速度的產業政策一、致力創意及速度的產業政策面臨的環境知識經濟時代知識成為競爭的核心10/25/20224 資工系網媒所資工系網媒所 NEWS實驗室實驗室計畫名稱96年

3、預定目標值93年預定目標高科技紡織1.產業結構：衣著：傢飾：產業用60：20：202.產值：2400億元。1.93年高科技紡織產值預計達1500億元。2.93年預計產業結構(比率)衣著:傢飾:產業用=70：15:15。保健機能性食品及保養品產業1.保健機能性食品產業產值290億元。2.保養品產業產值400 億元。1.93年保健機能性食品產值預計達250億元。2.93年保養品產業產值預計達240億元。高級材料工業產值達5500億元。預計93年產值3600億。光電電子用化學品產業產值達500億元。預計帶動廠商增加投資5千萬元，總產值預計330億元。輕金屬產業發展計畫產業產值800億元。促進投資2.

4、2億元，總產值620億元。輕型高效率電動車輛產業產值200億元。預計93年產值240億元。運動休閒產業提高產值至2,500億元產值預計1,600億元，民間投資8億元10/25/20225 資工系網媒所資工系網媒所 NEWS實驗室實驗室業別創造產值（億元）促進投資（億元）9192939495919293半導體6,5298,18810,78312,93915,9122,2382,2682,720影像顯示3,0064,1626,6209,50013,7001,0151,1991,591數位內容1,5371,8922,2682,9003,7007887108生物技術1,1091,2501,3771,5

5、851,897203215250總計12,18115,49221,04826,92435,2093,5343,7694,669備註：93年以後之數據為預估值。推動成效95年產值：年產值：半導體達半導體達1兆兆5,912億元、億元、影像顯示影像顯示1兆兆3,700億元、億元、數位內容數位內容 3,700億元及億元及 生物技術生物技術 1,897億元。億元。10/25/20226 資工系網媒所資工系網媒所 NEWS實驗室實驗室目標及重點目標及重點 服務業每年成長。知識密集服務業每年成長。發展策略發展策略 法令鬆綁 基礎環境 發展範疇 產業政策 投資誘因 釋出公有資源 人才培育 激發民間活力 擴張需

6、求 創新研發機制產業輔導產業輔導 金融服務 流通運輸服務 通訊媒體服務 醫療保健及照顧 人才培訓、人力派遣及物業管理 觀光及運動休閒 文化創意 設計服務 資訊服務 研發服務 環保服務 工程顧問服務本部為流通運輸、觀光及運動休閒、文化創意、設計、資訊、研發等服務業的主辦機關。10/25/20227 資工系網媒所資工系網媒所 NEWS實驗室實驗室 設計 數位台灣-e化商務產業協同設計 電子化營運總部-產業全球運籌電子化 全球運籌電子化深化 全球運籌電子化擴散 全球商業鏈整合及物流運籌E 計畫計畫(90.893.6)AB計畫計畫(89.190.12)D 計畫計畫 (90.892.12)C 計畫計畫中

7、心廠供應商國際客戶銀 行物流業者挑戰2008 3.3.產業電子化，台灣接單、全球生產及配送產業電子化，台灣接單、全球生產及配送10/25/20228 資工系網媒所資工系網媒所 NEWS實驗室實驗室總產出：總產出：-策略性促成國際大廠擴大對台採購（每年向國內採購資訊產品超過180億美元）-擴增國內中小企業接單能力（1800餘家業者導入電子化連線作業發揮整體競爭力）-提昇國際形象與知名度（成功導入國際資訊交換標準並進而制訂國際標準深獲讚揚）-帶動國內相關產業之電子化成長（扶植國內資訊服務並傳承電子化成功經驗）具體成效：具體成效：(以神達為例）以神達為例）訂單達交率：訂單達交率：95%，庫存：，庫存

8、：22億元億元億元，訂單億元，訂單回覆：回覆：天天天天IBMHPCompaq3家家國際採購商國際採購商國內系統廠商國內系統廠商國內零組件供應商國內零組件供應商A計畫計畫B計畫計畫自動詢報價自動詢報價訂購交貨訂購交貨驗收付款驗收付款品質管理品質管理供應商關係管理供應商關係管理自動詢報價自動詢報價訂購交貨訂購交貨驗收付款驗收付款IBM 體系：體系：20家家Compaq 體系：體系：10家家HP 體系：體系：12家家合合 計：計：42家次家次宏碁體系：宏碁體系：240家家神達體系：神達體系：212家家華碩體系：華碩體系：979家家：合合 計：計：3955家次家次威盛鴻海光寶國碁國巨世平.等1,800

9、家宏碁神達華碩大同英業達.等15家AB計畫10/25/20229 資工系網媒所資工系網媒所 NEWS實驗室實驗室產業需求產業需求/規格分析規格分析問題追蹤管理問題追蹤管理設計資料共享管理設計資料共享管理全球收付款、融資全球收付款、融資全球資金調度管理全球資金調度管理宏碁、神達、宏碁、神達、華碩、大同華碩、大同客客戶戶及及策策略略合合作作夥夥伴伴C計畫計畫E計畫計畫D計計畫畫貨況追蹤貨況追蹤庫存管理庫存管理全球運輸規劃全球運輸規劃通關文件管理通關文件管理物物流流資訊電子資訊電子製造體系製造體系威盛威盛台積電台積電日月光日月光建準建準瑞軒瑞軒.金流金流CashDelivery協同設計協同設計Eng

10、ineering Collaboration世華世華富邦富邦中銀中銀.金融金融機構機構物流服務業物流服務業CDE計畫成效：計畫成效：融資金額：92年底達120億，93年第1季達230億，93年底預估可達600億物流資訊透通：導入12個主要國家之出到貨及組裝據點，連結國內外物流平台及主要客戶Hub計16個。導入六個體系計有19家國際客戶及164家供應商一起參與建構各具特色的研發價值網路之虛擬社群。鼎新、仲訊、偉盟、關貿、汎宇、太一信通、怡康、訊豐.鴻霖、中菲行、寶靈頓、長榮、陽明鴻霖、中菲行、寶靈頓、長榮、陽明.CDE計畫10/25/202210 資工系網媒所資工系網媒所 NEWS實驗室實驗室伍

11、、願景高值台灣、運籌全球伍、願景高值台灣、運籌全球綠色綠色矽島矽島挑戰挑戰2008國家發展重點計畫國家發展重點計畫新十大建設新十大建設效益效益 挑戰目標挑戰目標1.世界第一的產品或技術至少世界第一的產品或技術至少15項。項。2.來台旅客超過目前來台旅客超過目前2倍以上。倍以上。3.R&D投資達到投資達到GDP的的3%。4.失業率降到失業率降到4%以下。以下。5.經濟成長率超過經濟成長率超過5%。6.寬頻用戶超過寬頻用戶超過6百萬戶。百萬戶。7.創造創造70萬個新工作機會。萬個新工作機會。1.促進經濟成長。促進經濟成長。2.創造就業機會。創造就業機會。3提升生活品質。提升生活品質。運籌全球運籌全

12、球高值台灣高值台灣10/25/202211 資工系網媒所資工系網媒所 NEWS實驗室實驗室Focus on Enterprise MiddlewareWhy?Who?What?When?Where?How?10/25/202212 資工系網媒所資工系網媒所 NEWS實驗室實驗室Introduction to SOAService-Oriented Architecturea Standard fOr Architecture description Society Of ActuarySociety Of Ancients10/25/202213 資工系網媒所資工系網媒所 NEWS實驗室實驗室

13、What is an Architecture?The architecture of an IT system is the structure or structures of the system,which comprise software and hardware components,the externally visible properties of those components,and the relationships among them.(Adapted from Bass et al.1)10/25/202214 資工系網媒所資工系網媒所 NEWS實驗室實驗室

14、What is a Service-Oriented Architecture(SOA)?SOA is an architectural style whose goal is to achieve loose coupling among interacting software agents.A service is a unit of work done by a service provider to achieve desired end results for a service consumer.Both provider and consumer are roles playe

15、d by software agents on behalf of their owners.10/25/202215 資工系網媒所資工系網媒所 NEWS實驗室實驗室Service-Oriented Architecture(1)An accepted industry model for representing applications on the network as reusable services.Various interface standards exist for these services.range from DCE/RPC and CORBA,DCE source

16、 code is now available under an Open Source license(LGPL).through stored procedures to Web Services.An architectural style whose goal is to achieve loose coupling among interacting software agents.10/25/202216 資工系網媒所資工系網媒所 NEWS實驗室實驗室Service-Oriented Architecture(2)In all cases,requests are made of t

17、he services by a calling application that expects some form of reply;often referred to as request/reply.A fundamental element of Service-Oriented Architectures is the separation of interface from implementation.This enables a more loose coupling between the service consumer and the service provider.

18、The separation is enabled by means of a metadata layer that makes the interface definition available at design time.10/25/202217 資工系網媒所資工系網媒所 NEWS實驗室實驗室How does SOA achieve loose coupling?Employing two architectural constraints:A small set of simple and ubiquitous interfaces to all participating sof

19、tware agents.Only generic semantics are encoded at the interfaces.The interfaces should be universally available for all providers and consumers.Descriptive messages constrained by an extensible schema delivered through the interfaces.No,or only minimal,system behavior is prescribed by messages.A sc

20、hema limits the vocabulary and structure of messages.An extensible schema allows new versions of services to be introduced without breaking existing services.10/25/202218 資工系網媒所資工系網媒所 NEWS實驗室實驗室Additional ConstraintsThere are a number of additional constraints one can apply on SOA in order to improv

21、e its scalability,performance and,reliability.Stateless Service Stateful Service Idempotent Request 10/25/202219 資工系網媒所資工系網媒所 NEWS實驗室實驗室Deriving Web Services from SOAA web service is a SOA with at least the following additional constraints:Interfaces must be based on Internet protocols such as HTTP,

22、FTP,and SMTP.Except for binary data attachment,messages must be in XMLThere are two main styles of Web services:SOAP web services and REST web services.10/25/202220 資工系網媒所資工系網媒所 NEWS實驗室實驗室SOAP Web services 1.Except for binary data attachment,messages must be carried by SOAP.2.The description of a se

23、rvice must be in WSDL.A SOAP RPC web service breaks the second constraint required by an SOA.10/25/202221 資工系網媒所資工系網媒所 NEWS實驗室實驗室REST Web Services 1.Interfaces are limited to HTTP.The following semantics are defined:HTTP GET is used for obtaining a representation of a resource.A consumer uses it to

24、retrieve a representation from a URI.Services provided through this interface must not incur any obligation from consumers.HTTP DELETE is used for removing representations of a resource.HTTP POST is used for updating or creating the representations of a resource.HTTP PUT is used for creating represe

25、ntations of a resource.2.Most messages are in XML,confined by a schema written in a schema language such as XML Schema from W3C or RELAX NG.3.Simple messages can be encoded with URL encoding.4.Service and service providers must be resources while a consumer can be a resource.10/25/202222 資工系網媒所資工系網媒

26、所 NEWS實驗室實驗室An SOAnot just Web servicesWithin a business environment,a pure architectural definition of an SOA might be an application architecture within which all functions are defined as independent services with well-defined invokable interfaces,which can be called in defined sequences to form b

27、usiness processes.two critical characteristics to be realized:the services are truly independent,they can be managed.10/25/202223 資工系網媒所資工系網媒所 NEWS實驗室實驗室Management includesSecurityto authorize requests,encrypt and decrypt data as required,and validate information.Deploymentto allow the service to be

28、 moved around the network to maximize performance or eliminate redundancy to provide optimum availability.Loggingto provide auditing and metering capabilities.Dynamic reroutingto provide fail-over or load-balancing capabilities.Maintenanceto manage new versions of the service.10/25/202224 資工系網媒所資工系網

29、媒所 NEWS實驗室實驗室What is a service?a simple business capabilitygetStockQuote,getCustomerAddress or checkCreditRatinga more complex business transactioncommitInventory,sellCoveredOption or scheduleDeliverya system service logMessageIn,authenticateUser10/25/202225 資工系網媒所資工系網媒所 NEWS實驗室實驗室Why migrating to a

30、 service-oriented architecture?ProblemsComplexityEnterprise Application Integration(EAI)tops the priority list of many CIOsredundant and nonreusable programmingas a result of mergers and acquisitionsmultiple interfacesthe n(n-1)integration problem10/25/202226 資工系網媒所資工系網媒所 NEWS實驗室實驗室What about the fu

31、ture?Java technology has provided platform-neutral programming.XML has provided self-describing,platform-neutral data.Web services have removed another barrier by allowing applications to interconnect in an object-model-neutral way.For example,using a simple XML-based messaging scheme,Java applicati

32、ons can invoke Microsoft.NET applications or CORBA-compliant,or even COBOL,applications.10/25/202227 資工系網媒所資工系網媒所 NEWS實驗室實驗室Common Misconceptions about SOA1.Web services are just like distributed objects 2.Web services is RPC for the Internet 3.Web Services need HTTP 4.Web services need web servers5

33、.Web services are reliable because they use TCP 6.Web services debugging is impossible 10/25/202228 資工系網媒所資工系網媒所 NEWS實驗室實驗室Distributed Computing Environment(DCE)LGPL?10/25/202229 資工系網媒所資工系網媒所 NEWS實驗室實驗室Enterprise Workframe Architecture10/25/202230 資工系網媒所資工系網媒所 NEWS實驗室實驗室InternetWhere to Open?Back-en

34、dFront-endJ2EE.NETCORBADCOMDCEWebsphereBiztalk:interfaces to openCompany A:Service 110/25/202231 資工系網媒所資工系網媒所 NEWS實驗室實驗室InternetEnterprise Middleware Platform關務後勤物流金流Open 物流 Middleware InterfaceJ2EE,CORBA,.NET,openopenmiddlewaresOpen Interface Platformopen10/25/202232 資工系網媒所資工系網媒所 NEWS實驗室實驗室Reference”全球运筹中心计划”經濟現況與展望.ppt台灣經濟的願景與出路.pptWhat is Architecture?What is Service-Oriented Architecture?Migrating to a service-oriented architectureWeb Services are not Distributed Objects:Common Misconceptions about Service Oriented Architectures What is Distributed Computing and DCE?10/25/202233