Some further considerations working towards WebServices, EAI and B2B solutions

Transcription

1 Some further considerations working towards WebServices, EAI and B2B solutions Just a selection: - deploy/design platform choices - Development Life Cycle approaches -Maturity - what you missed Web Service Implementation Platform line-up 1

2 Webservice implementation platforms: SoapWebServer's Simple wrapper systems to easily provide (OO-based) legacy applications with a Web service interface examples: SOAP-Lite, GLUE,... Webservice implementation platforms: Application Servers A standard (scalable) virtual engine runs a set of configurable and extendible components that take care of the different aspects of the webservices running examples: Tomcat+java servlets, J2EE, DotNet+C# progs,... 2

3 Webservice implementation platforms: Intergration Servers Mostly a robust configuration of an Application Server with all the tools and basic facilities for complex Webservices (IDE, routing, securing, administrating, UDDI, monitoring,...) already runnable and easily configurable examples: Intalio, Bizztalk, Collaxa, Websphere+... Webservice Development LifeCycle How do we build our new service? -what development process shall we adopt? -how much modeling and what tools to use? 3

4 Alternative (WS) Development Life Cycle approaches Architectural (Simplified): TopDown: Business Process design first Interfaces next Implementation last BottomUp Implement pieces (try to ) Connect the pieces (try to..) to whole solution Document and derive your automated process (model) Cycle Speed (simplified) Waterfall Do 1 big initial complete develop Cycle before release. Only small correction and adaptation cycles next. Iterative Do many smaller but maybe partially covering incremental cycles before first release WizWise Technology 11 Iterative Development Business Model Design Automation Build Build Build Build Build Release Build Deploy Infrastructure Development WizWise Technology 12 4

5 using (non WS related!) Models and Standards: OMG Model Driven Architecture: The MDA hype Ingredients: High level platform independent models Technology Models Mapping choices: between standards and between standards and artifacts Custom Standard Feature: Standard Models produce technology specific standards artifacts (e.g. applications) OMG Standards before the WebService Hype WizWise Technology 13 How to do MDA? Tooltypes TopDown Let tools generate artifacts from models (relatively easy) BottomUp Let tools analyze your self created pieces (relatively hard) and generate models Iterative Use tools that generate and analyze => ROUNDTRIIP WizWise Technology 14 5

6 High level tooling & infrastructure Executable models? MUST BE SIMPLE! We must be able to create better applications faster We must separate the technology and business concerns, enable the user Tooling + Infrastructure Executable models are source code A Tooling must be technology aware Infrastructure must support tooling Model based component architectures WizWise Technology 18 MDA version for WebServices: Model Driven Business Integration Apply successes of MDA Re-usability Fast, development and re-engineering Design transparency (towards Management, third parties, new developers,.. A method: Use UML and highlevel WS languages (WSCI, WSDL, BPEL,...) and mappings between them.: E.g.UML-2-BPEL (ibm), N3 designer (intalio),.. WizWise Technology 19 6

7 A WS Development Life Cycle approach... (our favorite practice) An Approach: Analyze EAI situation Determin/Decide soa type solution (ist->soll,...) determ/decide matching platform type solution (ist -> soll) model solution parts (best practice: mixed Ask Top/Down(P->I) Bottom/Up(I-<P,I->D) Us! bootstrap mode) D. Datatypes +req. conversies(db struc, Doc struc,-> schema, xlst, prototypes) I. Interfaces (UML, WSDL, prototypes) P. Processes (UML, BPEL,BPM, prototypes(js,vb) Design Feedback/cycle, Incremental Build parts and try (differs for SWS, AS, IS!!) and (re-)cycle Iterative, incremental Easiest with (partial) roundtrio tools WizWise Technology 20 Maturity of WS approaches? WizWise Technology 21 7

8 Curve of expectations 2001 WizWise Technology 22 Curve of expectations 2002 WizWise Technology 23 8

9 What we/you missed? Buzz words The GRID?.Net? J2EE?... Unmentioned standards/vocabularies WS-Policy Requirements exchange ARIES Reputation exchange WSRM, HTTPR, Reliability provision WSFR Fail-over provision CBE Wsbased event snmp variant... WizWise Technology 24 Web Services, does it still/already sound as music? WizWise Technology 27 9

10 THANKS WizWise Technology 28 10