System integration with Web Services and XML

Transcription

1 System integration with Web Services and XML Peter Norrhall Callista Enterprise AB CADEC , Web Services, Slide 1

2 System integration with Web Services and XML Target audience Developers, architects and IT-managers Objectives Experiences from a real world project Non-Objectives Intro to Web Services CADEC , Web Services, Slide 2

3 To learn more Gå inte in i väggen, när du kan använda dörren Peter Norrhall O Reilly, 2003 ISBN We accept all major credit cards 10 % off in the bar tonight CADEC , Web Services, Slide 3

4 Agenda Papyrus e-services Technical issues Business issues Summary CADEC , Web Services, Slide 4

5 E-business vision Customer s preferred choice All routine communication fulfilled through internet Papyrus Hungary Papyrus UK Papyrus Norway Papyrus Sweden Papyrus Denmark Papyrus Finland Industry market leader Papyrus Lithuania 120 million EUR in annual sales (15% e-share) Leading the development of new e-services Focus on value adding services Significant business over internet Papyrus Latvia Papyrus Poland Papyrus Estonia Papyrus Holland Papyrus France Papyrus Belgium CADEC , Web Services, Slide 5

6 E-business is growing Key European markets, KTON with e-business traditionell CADEC , Web Services, Slide 6

7 Papyrus e-business history Supplier Papyrus Customer 1975 First Integration Replaced by EDI 1985 Partner 1.0, online system 1989 EDI solutions 1997 Partner 2.0, internet based 1999 papyrus.com 2000 Papyrus e-point 2002 Papyrus e-services CADEC , Web Services, Slide 7

8 System Integration EDI ORDRSP DESADV INVOIC PRICAT INVOIC Supplier Papyrus Customer ORDERS ORDERS CREEXT Bank CADEC , Web Services, Slide 8

9 System Integration XML Order Product Catalogue Price/Inventory Order Response Invoice Supplier Papyrus Customer Invoice Order Response Order CADEC , Web Services, Slide 9

10 papinet.org XML DTD and Schema (Order, Invoice, RFP, etc), Case Studies, Business Flow papinet Messenger CADEC , Web Services, Slide 10

11 papinet Message Router Supplier Customer papinet Messenger Stora Enso p-service papinet Messenger papinet Messenger Papyrus papinet Messenger papinet Messenger Mainframe CSS HTTP HTTP VCOM CADEC , Web Services, Slide 11

12 ERP/Portal Integration using Web Services Technical Issues Interoperability Security Business Issues Business Rules Business Model CADEC , Web Services, Slide 12

13 Interoperability Pick a limited number of target client platforms MS (SOAP Toolkit,.Net), Java (Apache Axis, Apache SOAP, Sun WSDK, IBM WSTK, Systinet WASP, Oracle), Delphi/Kylix, Perl,... Basic Profile : XML Schema 1.0, SOAP 1.1, WSDL 1.1, UDDI CADEC , Web Services, Slide 13

14 WSDL IDL start writing the interface WSDL2Java, WSDL.exe,... RPC (JAX-RPC) Structured Document (JAXM) Unstructured Recommended by WS-I, MS, SOAP 1.2 XML Schema Message (Axis non-standard) CADEC , Web Services, Slide 14

15 CADEC , Web Services, Slide 15 WSDL

16 Data Types Simple (XML Schema Part 2 : Built-in Datatypes) Types that work String, boolean, int,... Simple Complex Type (JavaBeans) Array of any valid type Beware of language specific types Floating-point, decimal and date data types Unsigned Enumeration java.util.hashlist XML Schema CADEC , Web Services, Slide 16

17 Encoding UTF-8 Base64Encoding Attachment CADEC , Web Services, Slide 17

18 Attachments Non XML documents Business documents (Order, Invoice,...) Interoperability problem DIME vs MIME Different implementations Axis, SAAJ, JAXM CADEC , Web Services, Slide 18

19 Example WSDL... <message name="receivecategoryinput"> <part name="pid" type="xsd:string"/> <part name="pcompletetree" type="xsd:boolean"/> </message> <message name="receivecategoryresponse"> <part name="result" type="xsd:string"/> </message> <porttype name="catalogserviceporttype"> <operation name="receivecategory" parameterorder="pid pcompletetree"> <input message="tns:receivecategoryinput"/> <output message="tns:receivecategoryresponse"/> </operation> </porttype>... CADEC , Web Services, Slide 19

20 Example WSDL... <message name="receivecategoryinput"> <part name="pid" type="xsd:string"/> <part name="pcompletetree" type="xsd:boolean"/> </message> <message name="receivecategoryresponse"> <part name="result" type="xsd:string"/> </message> <porttype name="catalogserviceporttype"> <operation name="receivecategory" parameterorder="pid pcompletetree"> <input message="tns:receivecategoryinput"/> <output message="tns:receivecategoryresponse"/> </operation> </porttype>... CADEC , Web Services, Slide 20

21 Example WSDL... <message name="receivecategoryinput"> <part name="pid" type="xsd:string"/> <part name="pcompletetree" type="xsd:boolean"/> </message> <message name="receivecategoryresponse"> <part name="result" type="xsd:string"/> </message> <porttype name="catalogserviceporttype"> <operation name="receivecategory" parameterorder="pid pcompletetree"> <input message="tns:receivecategoryinput"/> <output message="tns:receivecategoryresponse"/> </operation> </porttype>... CADEC , Web Services, Slide 21

22 Delphi CatalogServicePortType = interface(iinvokable) ['{639DAB2C-6AF6-E86A-AF07-F F8}'] function receivecategory(const pid: WideString; const pcompletetree: boolean): WideString; stdcall; end; CADEC , Web Services, Slide 22

23 CADEC , Web Services, Slide 23 Example

24 Security Basic Authentication and Security Server and client X.509 certificates SSL encryption Userid and password sent in the message WS-S endorsed by IBM, MS, Verisign, Sun, OASIS CADEC , Web Services, Slide 24

25 Security The weakest link problem : CADEC , Web Services, Slide 25

26 Sessions Do not rely on session support Depends on the application server and the client HTTP sessions/cookies SOAPHeader sessionid in message Dynamic endpoints (.Net remoting) Performance issues CADEC , Web Services, Slide 26

27 UDDI Not used JAXR CADEC , Web Services, Slide 27

28 Testing Write, deploy, test Tools (OpenSource) Soap/Tcp Monitor Anteater TestMaker - CADEC , Web Services, Slide 28

29 CADEC , Web Services, Slide 29 Business Issues

30 Pricing Customer unique Units Sheet Package Pallet Total quantity Promotions CADEC , Web Services, Slide 30

31 Business Model Data Mapping Agreement File formats XML (papinet, UBL, cxml,...) EDIFACT in-house (flat file) Mapping tools and/or XSLT/XPath cxml UBL xcbl papinet in-house... EDIFACT CADEC , Web Services, Slide 31

32 CADEC , Web Services, Slide 32 BizTalk Mapper

33 Architecture Papyrus papinet Server papinet Messenger BizTalk VCOM Axis SOAP Mainframe Customer SOAP Screen Scraping ERP Portal Server Commerce Server Customer WS Servlet Endpoint SOAP WS Servlet Endpoint Connector ERP ERP SOAP WS Servlet Endpoint CADEC , Web Services, Slide 33

34 Synchronous Web Container EJB Container Client WS Servlet Endpoint EJB SQL Connector Mainframe CADEC , Web Services, Slide 34

35 Asynchronous Web Container JMS EJB Container Client WS Servlet Endpoint MDB Connector Mainframe CADEC , Web Services, Slide 35

36 Summary It works Stay simple Tools is a must IDE (JBuilder, JDeveloper,...) XML editor Ant... Is Web Services the answer for your business? CADEC , Web Services, Slide 36

37 CADEC , Web Services, Slide 37 Questions?