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How Southern California Edison Used Service Oriented Architecture to Integrate Legacy Web Applications into Its SAP NetWeaver Portal

How Southern California Edison Used Service Oriented Architecture to Integrate Legacy Web Applications into Its SAP NetWeaver Portal

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Portal / BI 2008 Presentation by Ted Tschopp Portal / BI 2008 Presentation by Ted Tschopp Presentation Transcript

  • How Southern CaliforniaEdison Used Service OrientedArchitecture to IntegrateLegacy Web Applications intoIts SAP NetWeaver PortalTed TschoppSouthern California Edison © 2008 Wellesley Information Services. All rights reserved.
  • What We’ll Cover …• Introductions• The Problem• Workable Solutions – Development• The SOA Approach• Wrap-up 1
  • About Edison International & Southern California Edison• Edison International, through its subsidiaries, is a generator and distributor of electric power and an investor in infrastructure and energy assets, including renewable energy. Headquartered in Rosemead, California, Edison International is the parent company of Southern California Edison—a regulated electric utility—and Edison Mission Group, a competitive power generation business.• Southern California Edison (SCE) is the largest electric utility in California, serving more than 13 million people in a 50,000 square- mile area of central, coastal and Southern California, excluding the City of Los Angeles and certain other cities. Based in Rosemead, California, the utility has been providing electric service in the region for more than 120 years. SCEs service territory includes more 180 cities. As of September 30, 2007, SCE had consolidated assets of approximately $27.5 billion. As of November 2006, SCE had approximately 15,500 employees. 2
  • About Ted Tschopp• Senior IT Specialist/Engineer currently assigned to SAP Portal implementation at Southern California Edison. A member of the architecture, engineering, and IT security group specializing in web based portal and search technologies with almost 10 years experience working in large scale enterprises.• Specialties:  Application architecture, design, and development in large scale enterprise environments, SAP, Plumtree, .NET, Java, Web Services and Service Oriented Architectures. 3
  • About our SAP ImplementationProgram Statistics - Release 1 of 4Process Owners 109Deployment Locations 195Processes, Sub-Processes, Activities 27 / 130 / 1,083SAP Modules and Sub-Modules 47 / 151Release 1 Roles 380Legacy Systems Being Replaced in R1 441 (out of 1,040)Development Objects 536End User Training Courses 150Active End Users / 16,000 / 20,000 Total End Users including Retirees 4
  • What We’ll Cover …• The Problem• Workable Solutions – Development• The SOA Approach• Wrap-up 5
  • What We’ll Cover …• The Problem  Legacy Web Applications  Integration with SAP Portal  Leverage Portal Features  Demo: A Look at SCE’s Legacy Application• Workable Solutions – Development• The SOA Approach• Wrap-up 6
  • The Problem: Legacy Web Applications• You just spent a money on SAP• You also have a bunch legacy web applications  Some will be replaced with SAP  Some will be retired  Some will be kept until…  They are all different  Different Technologies  ASP / ASP.NET, Perl, Lotus, php, etc….  Different Platforms  Windows 2000/2003, Netscape Web Server, Apache, etc… 7
  • The Problem: How to Integrate with the Portal• Links & Pop Ups  Pros  Quick & Easy  Cons  Doesn’t Leverage the Portal at All  Not Real Integration• URL iViews  Pros  Quick & Easy  Cons  Not Real Integration 8
  • The Problem: I Want to Leverage Portal Features• The Legacy Application Should Know Who I am  I logged into the Portal  Look up the personal information in the Portal• The Legacy Application Should Look Like My Portal  Leverage the Custom Style Sheets of the Portal• Use iView’s preferences to save settings used in the Legacy Application 9
  • What We’ll Cover …• The Problem• Workable Solutions - Development• The SOA Approach• Wrap-up 10
  • Workable Solutions - Development• Develop a WebDynPro Application  Pros - Fully Integrated into the Portal  Cons - Two Development Applications  WebDynPro Application  Data Connector• Develop a PDK Application  Pros - Fully Integrated into the Portal  Cons - Two Development Applications  PDK Application  Data Connector• If you are going to do this, you are not Integrating 11
  • What We’ll Cover …• The Problem• Workable Solutions - Development• The SOA Approach• Wrap-up 12
  • What We’ll Cover …• The Problem• Workable Solutions - Development• The SOA Approach  Demo: The Legacy Application  Architecture of the Legacy Application  The SOA Approach  Demo: The Portal Application  Code• Wrap-up 13
  • Demo: The Legacy Application 14
  • Architecture of the Legacy Application• User• Load Balancer• Web Servers  Netscape Web Servers  Perl• Databases  Sybase gets nightly updates from HR and IT / Security databases 15
  • Architecture of the Legacy Application• User• Load Balancer• Web Servers  Netscape Web Servers  Perl• Databases  Sybase gets nightly updates from HR and IT / Security databases 16
  • Architecture of the Legacy Application• User• Load Balancer• Web Servers  Netscape Web Servers  Perl• Databases  Sybase gets nightly updates from HR and IT / Security databases 17
  • Architecture of the Legacy Application• User• Load Balancer• Web Servers  Netscape Web Servers  Perl• Databases  Sybase gets nightly updates from HR and IT / Security databases 18
  • What We’ll Cover …• The Problem• Workable Solutions - Development• The SOA Approach  Demo: The Legacy Application  Architecture of the Legacy Application  The SOA Approach  Transforming the Legacy Application Into a Service  Integration of the Service into the Portal  Demo: More Code Walk Through  Architecture of the New Application  Demo: The Portal Application• Wrap-up 19
  • Transforming the Legacy Application Into a Service• Most websites can be converted quite quickly  Web Pages become Web Services  Most Web Pages have one Stored Procedure / Database Call  Strip all HTML out of the page  Normalize all data used on the page  Don’t forget to include calculated data points  Build up XML to encapsulate the data  Points to watch out for  You don’t need to make a full SOAP / WSDL service  Don’t go crazy with normalizing the data  If you have loops, create different levels in the XML 20
  • Integration of the Service into the Portal• Create an XSL file to transform the Web Service into a nicely formatted XHTLM file Go get a copy of XML Cooktop (it’s Free!) http://www.xmlcooktop.com/  Create an XSL file that will convert the XML file into XHTML  Remember:  This is not a full XHTML file. This will get inserted into the portal framework  You have a full browser experience to play in  JavaScript, AJAX, Images, CSS, etc…  DO NOT STEP ON THE PORTALS JAVASCRIPTGOTCHA! FRAMEWORK. DON’T GET FANCY! 21
  • Integration of the Service into the Portal• Use XML Transformer to integrate the Web Service into the Portal• strSearchResultsXsl is a link to the XSL file• strSearchResultsXml is a URL to the XML Web Service 22
  • Integration of the Service into the Portal• You Can Insert Variables from the Portal using JavaScript and Response.Write  This example is outputting personalization values into a drop down. JavaScript will insure it gets dropped in at client build time.  You might need to get creative with your JavaScript 23
  • Integration of the Service into the Portal• You Can Send Variables from the Portal back to the Web Service to be included in the XML sent back.  In this case strParam is being sent back. It will contain strSceID.  Each Service Call sends strSceID if it was present. strSceID is the username of the user logged in. 24
  • Demo: More Code Walk Through with Q/A 25
  • What We’ll Cover …• The Problem• Workable Solutions - Development• The SOA Approach  Demo: The Legacy Application  Architecture of the Legacy Application  The SOA Approach  Transforming the Legacy Application Into a Service  Integration of the Service into the Portal  Demo: More Code Walk Through  Architecture of the New Application  Demo: The Portal Application• Wrap-up 26
  • Architecture of the New Application• User• SAP Application Servers• Load Balancer• Web Servers  Netscape Web Servers  Perl• Databases  Sybase gets nightly updates from HR and IT / Security databases 27
  • Architecture of the New Application• User• SAP Application Servers• Load Balancer• Web Servers  Netscape Web Servers  Perl• Databases  Sybase gets nightly updates from HR and IT / Security databases 28
  • Architecture of the New Application• User• SAP Application Servers• Load Balancer• Web Servers  Netscape Web Servers  Perl• Databases  Sybase gets nightly updates from HR and IT / Security databases 29
  • Architecture of the New Application• User• SAP Application Servers• Load Balancer• Web Servers  Netscape Web Servers  Perl• Databases  Sybase gets nightly updates from HR and IT / Security databases 30
  • Architecture of the New Application• User• Load Balancer• Web Servers  Netscape Web Servers  Perl• Databases  Sybase gets nightly updates from HR and IT / Security databases 31
  • What We’ll Cover …• The Problem• Workable Solutions - Development• The SOA Approach  Demo: The Legacy Application  Architecture of the Legacy Application  The SOA Approach  Transforming the Legacy Application Into a Service  Integration of the Service into the Portal  Demo: More Code Walk Through  Architecture of the New Application  Demo: The Portal Application• Wrap-up 32
  • Demo: More Code Walk Through with Q/A 33
  • What We’ll Cover …• The Problem• Workable Solutions - Development• The SOA Approach• Wrap-up 34
  • What We’ll Cover …• The Problem• Workable Solutions - Development• The SOA Approach• Wrap-up  Where to use this Technique  Resources  7 Key Points to Take Home  Your Turn 35
  • Wrap-up: Where to use this Technique• You are Solving User Problems• This is Simple  This isn’t some amazing secret  This isn’t ―Sexy‖  But… It stands up to load• Places where this can be used  Simple Web Applications  Translating legacy portal apps into SAP Portal Apps  External Web Services• Be Careful: Make sure you don’t really need a fully integrated solution 36
  • Resources• www.xmlcooktop.com  Free Application for creating XSL files• www.tedtschopp.com/sap/  Code and Files used in this presentation• sdn.sap.com  SAP Developers Network – We got a lot of help working out the kinks 37
  • 7 Key Points to Take Home1. Legacy Web Pages can become Web Services2. Don’t use this technique as a replacement for Needed Development / Integration3. You are solving USER problems not IT problems4. Most of the time ―Sexy‖ IT solutions do not translate into ―Sexy‖ user solutions5. Don’t Worry About Being 100% Buzzword / Standards Compliant6. Don’t step on the Portal Framework7. You don’t need to be a Fortune 200 company to take advantage of these techniques 38
  • Your Turn! How to contact me: Ted Tschopp Ted.Tschopp@sce.com 39