IBM IMPACT 2009 Session 3100 - Dynamic Scripting and Rich Web 2.0 Interfaces with IBM CICS® Transaction Server

#3100 Dynamic Scripting and Rich Web 2.0 Interfaces with IBM CICS® Transaction Server Rob Nicholson Senior Technical Staff Member – WebSphere sMash Fraser Bohm Senior software engineer – CICS Web Service Lead © 2009 IBM Corporation

Abstract CICS has been powering the world's transactions for forty years, continually evolving and adopting new technologies. Many customers see CICS's adoption of a technology as validation that it's ready at the enterprise level. Through WebSphere sMash, CICS brings seamless integration of rich Web 2.0 interfaces to your core CICS applications. WebSphere sMash is a new agile Web application platform for developing and running modern Web 2.0 applications. It can be used to create RESTful Web services and rich AJAX interfaces using popular Web technologies such as PHP and Groovy. This session explores the integration of CICS and sMash and the role of dynamic scripting in the enterprise world. The session will explain and demonstrate the SupportPac CA1S provides the ability to use PHP scripts in CICS as an option to service enable your applications in a RESTful style. We will also show how easy it is to create situational applications using sMash with CICS via the CICS Transaction Gateway. 2 © 2009 IBM Corporation

Web 2.0 Definitions • Google: A perceived ongoing transition of the World Wide Web from a collection of websites to a full-fledged computing platform serving web applications to end user. Ultimately Web 2.0 services are expected to replace desktop computing applications for many purposes. • Tim O’Reilly (the person who coined the term): The business revolution in the computer industry caused by the move to the Internet as platform, and an attempt to understand the rules for success on that new platform. • Tim O’Reilly A true Web 2.0 application is one that gets better the more people use it. 5 © 2009 IBM Corporation

Web 2.0 – Philosophy – not just Technology • An important trend in delivering software applications • An enabler for richer web applications – New business models – Peer-to-peer user participation – New technologies – Interactive filtering, presentation, data entry • A combination of core technology components – Rich user experience (maps, grids, animation, D&D, etc) – Loose-coupling, composite applications via reuse and “mash-ups” – Technologies (SOAP, REST, JSON, ATOM, Java, PHP, Dojo, Ruby, Python, Perl, etc) 6 © 2009 IBM Corporation

Web 2.0 Application Characteristics • Rich user experience with minimal page transitions • Dynamic content • Data asynchronously retrieved via REST or SOAP service calls • Client-side validation • User encouraged to add value • Simplified user interface • Integration of relevant data from multiple sources 7 © 2009 IBM Corporation

Web 2.0 for the Enterprise? It’s fast becoming a Web 2.0 • Web 2.0 is business world, where innovation – Creating new markets never goes out of style. – Lowering competitive barriers According to Gartner – Encouraging creativity to come from anywhere According to Gartner Missing out on the non- Missing out on the non- – Harnessing community created media technology aspects of Web technology aspects of Web – Tapping into the wisdom of the crowds 2.0 means that many 2.0 means that many organizations will also miss organizations will also miss – Enhancing communications and making out on some of the positive out on some of the positive information more impactful business benefits business benefits • What does it means for the enterprise? – Greater collaboration and innovation across the value chain – Increased levels of customer intimacy – Simplification of complex IT and business infrastructure – Business model flexibility to capitalize on new market opportunities 8 © 2009 IBM Corporation

The Application Landscape Traditional developers building strategic applications Developers building simple applications and services to Enterprise solve simple problems applications SCM Usage CRM IT created applications ERP User created applications Sales analysis Dashboards Number of Applications 10 © 2009 IBM Corporation

Scenario: Simple Supply Chain Integration Goal: Integration between a manufacturer and a small supplier. Provide manufacturer with better view of available inventory; provide supplier with forecast and order information. WebSphere sMash used at supplier to more quickly integrate supplier information with the manufacturer’s ERP system. sMash RTE Large Enterprise sMash ERP Forecast Forecast Custom Orders ERP Orders 12 © 2009 IBM Corporation

WebSphere sMash • Speed Lightweight platform with – Dynamic scripting languages (PHP and browser-based Groovy – with Java as system language) composition Tools – Core application constructs: templates, pre-built services • Simplicity – Built-in browser-based composition tools: Visual tools (for web page construction or scripting activities into a flow) and scripting tools (server-side dynamic scripting) – REST-style architecture – simple ways to expose and consume services • Agility – Simple deployment (application “is” the server) – Runtime Characteristics (clean, cost effective, short-lived) 14 © 2009 IBM Corporation

Interacting with CICS Programs • Build a Java object representation of your COMMAREA with JZOS – JZOS is included in the IBM JDK for zOS • Use the CTG Java Client Libraries – From Groovy – From PHP via the Java Bridge Java Class for COMMAREA ADATA COMMAREA PHP Java Bridge COBOL Compiler JZOS ctgclient.jar Source 20 © 2009 IBM Corporation

What is REST ? • REST is the acronym for „Representational State Transfer“ – It is the architectural model on which the World Wide Web is based • Principles of REST – Resource centric approach – All relevant resources are addressable via URIs – Uniform access via HTTP – GET, POST, PUT, DELETE – Content type negotiation allows retrieving alternative representations from same URI • REST style services – are easy to access from code running in web browsers, any other client or servers • More info: http://www.ics.uci.edu/~fielding/pubs/dissertation/top.htm 22 © 2009 IBM Corporation

RESTful Resources HTTP URI Description RESTful Design Method Collection Model GET /people List members Action can be taken on the entire collection or a specified POST /people Create member member of the collection URI and HTTP method define GET /people/1 Retrieve member the resource request PUT /people/1 Update member DELETE /people/1 Delete member REST and WebSphere sMash WebSphere sMash supports URI and HTTP method define the collection resource model Each script in the <apphome>/app/resources directory represents a resource handler URL convention for interacting with resources based on /resources/<collectionName>[/<memberID>[/<pathInfo>]] where the actions are defined as follows: Resource GET PUT POST DELETE Collection list putCollection create deleteCollection Member retrieve update postMember delete 23 © 2009 IBM Corporation

ATOM support in CICS TS 4.1 http://winmvs2c.hursley.ibm.com/atom/cicsfile/filea URIMAP PATH(atom/*) ATOMSERVICE USAGE(ATOM) ATOMTYPE(FEED) STATUS(ENABLED) RESOURCENAME(FILEA) RESOURCETYPE(FILE) BINDFILE CONFIGFILE <cics:atomservice type=\"feed“ XSDBIND file <cics:feed cics:window=\"window-size\"> <cics:resource name=“FILEA\" type=“FILE“/> ... <atom:feed xmlns:atom=\"http://www.w3.org/2005/Atom\"> .... <atom:content cics:resource=\"cics-resource-name\" cics:type=\"cics-resource-type\"/> </atom:feed> </cics:atomservice> 26 © 2009 IBM Corporation

CICS PHP: Interfacing with CICS CA1S supportPac CICS TS V3 TCPIPSERVICE CSOL HTTP CPIH CWXN Requester Pipeline URIMAP RFPHNDLR matching HFS URIMAP pipeline JVM config PIPELINE PHP Interpreter PHP Scripts PHP Script 29 © 2009 IBM Corporation

PHP in CICS: Interacting with CICS Programs • PHP in CICS has a Java Bridge – Build a Java object representation of your COMMAREA with JZOS – LINK to your business program using the provided API – LINK, Syncpoint, and Rollback supported PHP Script CICS TS V3 Generate ADATA from compiler (data layout info) 1 3 Generate Java Data object using JZOS Data to 2 COMMAREA 2 1 COBOL JZOS COMMAREA Compiler ADATA Source 4 Load LINK Set data in COMMAREA object Module 3 5 COBOL LINK to business logic 4 Program Data from COMMAREA Get data from COMMAREA object 5 30 © 2009 IBM Corporation

Summary of CA1S Features • Handle HTTP requests with PHP code • Call CICS commarea programs from PHP • Access DB2 databases from PHP • Manage units of work from PHP (commit/rollback) • Use event handlers to easily create RESTful Web Services • Debug PHP scripts with Eclipse PDT • Access any Java classes from PHP code using the PHP/Java Bridge 31 © 2009 IBM Corporation

WebSphere sMash based on IBM’s Project Zero incubation effort • Project Zero is the development WebSphere sMash and incubation community – Live on the Internet since June 2007 Based on Project Zero • Project Zero represents www.projectzero.org – The people that build and use WebSphere sMash Community Site – The incubation of new technology – The community of 3rd party assets that leverage the WebSphere sMash platform • All released versions are called WebSphere sMash 34 © 2009 IBM Corporation

Resources: • WebSphere sMash - http://www-01.ibm.com/software/webservers/smash/ – Project Zero - http://projectzero.org • CA1S – PHP Support Pac – More info about CA1S: http://tinyurl.com/phpOnCics – Video of CA1S: http://tinyurl.com/phpOnCicsVideo • CA8k – Atom Support Pac http://www- 01.ibm.com/support/docview.wss?uid=swg24018619 • JZOS - http://www- 03.ibm.com/servers/eserver/zseries/software/java/products/jzos/overview.html ATOM - http://rollerweblogger.org/downloads/presentations/TriXML2006- BeyondBlogging.pdf REST - http://doc.opengarden.org/REST/REST_for_the_Rest_of_Us CICS Supportpac CA8K - http://www- 01.ibm.com/support/docview.wss?uid=swg24018619 35 © 2009 IBM Corporation

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IBM IMPACT 2009 Session 3100 - Dynamic Scripting and Rich Web 2.0 Interfaces with IBM CICS® Transaction Server

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