Cics Connectivity

CICS Connectivity Strategic Integration Options Tom Grieve [email_address]

Introduction ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

CICS and SOA is big ! Source: Arcati Limited

Applications are at the Heart of SOA ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],Foundational Extend End-to-End Transform Adapt Dynamically

CICS SOA solutions must integrate with other Service providers ,[object Object],[object Object],Connectivity Reuse Process People Information CICS Service Flow WebSphere Process Server CICS BMS or Web Browser WebSphere Portal Server CICS VSAM DB2 CICS ISC, CICS TG MQ and Message Broker WebSphere ESB DataPower CICS Native Web Sevices WebSphere Application Server Foundational Extend End-to-End Transform Adapt Dynamically

Web Services ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

CICS application architecture – a framework for reuse ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],CICS Transaction Server Client 3270 Presentation Integration logic Data access Transaction D I P Business logic B

Connectivity to CICS programs ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],A CICS TS 3270 terminal D B P Transaction Client A I A

Two models for SOA integration of CICS applications ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Two models of CICS SOA integration CICS TS Web service Client CICS Program Business logic B Requester connector Web services end-point Service Provider D Integration logic I SOAP CICS TS Web service Client CICS Web services support Integration logic Data access Business Function D I Business logic B Requester (Service Provider) SOAP A A

Factors Influencing your Integration Choices ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Reusing 3270 presentation logic – Link3270 bridge ,[object Object],[object Object],[object Object],[object Object],[object Object],CICS TS 3270 terminal D I/B P Transaction I/B P Client Link3270 Bridge

Reusing 3270 presentation logic – HATS ,[object Object],[object Object],[object Object],[object Object],CICS TS 3270 terminal D I/B P Transaction A WebSphere App Server Client

Service Flow Modeller ,[object Object],[object Object],[object Object],[object Object]

Integration with CICS - Strategic options ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],Whitepaper: Delivering quick access to CICS systems using strategic integration options ibm.com/software/htp/cics/library/indexes/whitepapers.html 1 4 5 6 3 2

Access to CICS - (inbound) CICS TS Web services Servlet Browser JCA EJB WebSphere MQ TCP/IP Sockets Web services 1 4 5 6 3 2 J2EE App Server D B A I

Access from CICS – (outbound) CICS TS 1 5 6 B A Web services Web server WebSphere MQ TCP/IP Sockets EJB Web services J2EE App Server 4 3

Standard architecture - JCA ,[object Object],[object Object],Client CICS TS CCI CICS Transaction Gateway JCA J2EE Server A D B 2

J2EE Connector Architecture (JCA) ,[object Object],J2EE Server (e.g WebSphere Application Server) Application Component (e.g EJB) Resource Adapter (e.g CICS ECI resource adapter) Enterprise Information System (e.g CICS) System Contracts Container-Component Contract ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],Common Client Interface (CCI) EIS Specific Interface ConnectionFactory cf =< JNDI lookup > Connection connection =cf.getConnection(); Interaction interaction =connection.createInteraction(); interaction.execute(<input and output data>); interaction.close(); connection.close();

Exposing CICS applications as Web service - Connector approach ,[object Object],[object Object],CICS TS Web Service Client CICS Program Business logic B Other/Any CICS Transaction Gateway CICS TG WebSphere Application Server Web Service Support WAS J CA D A

J2EE Connector Architecture (JCA) CICS Network HTML WebSphere Application Server and CICS TG on z/OS WebSphere Application Server and CICS TG on a distributed platform WebSphere Application Server on a distributed platform CICS TG z/OS Topology 1 Topology 3 Topology 2 zSeries

CICS Transaction Gateway – Secure interoperation ,[object Object],[object Object],[object Object],[object Object],CICS TS CICS Program Business logic B CICS Transaction Gateway CICS TG (z/OS) WebSphere Application Server Web Service Support WAS (any platform) J 2 C DB2 EJB SOAP EXCI RRS SSL Alice Authentication Confidentiality and Integrity Authorization Authentication (optional) Web Service Client Other/Any

CICS Transaction Gateway – Transactional interoperation ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],CICS TS Web Service Client CICS Program Business logic B Other/Any CICS Transaction Gateway CICS TG (z/OS) WebSphere Application Server Web Service Support WAS (any platform) J 2 C VSAM DB2 DB2 EJB SOAP EXCI IPIC TCP/IP XA Global transaction

CICS Transaction Gateway - Capability ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Standard architecture – Web services ,[object Object],[object Object],[object Object],Client A CICS Web support WebSphere MQ Trigger Monitor Pipeline CICS or custom data mapping CICS TS SOAP D B Proxy 1

Web services in CICS TS V3 CICS CICS provided utilities CICS Web service conversion WSDL Service Requester IDE tools WSBind file lang . structure top down bottom up Tools Runtime Business logic SOAP Pipeline CICS Web Services Assist Utilities: DFHLS2WS DFHWS2LS ,[object Object],[object Object],[object Object],[object Object]

Exposing CICS application as Web service Direct service call approach ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],CICS TS Web Service Client CICS Web Services support Integration logic Data access Business Function D I Business logic B Other/Any (Service Provider) A

CICS Web Services Support - outbound ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],CICS TS Web Service Provider CICS Web Services support From CICS Program Business logic B Other/Any (Service Requester) A

CICS Web Services Support – Secure interoperation ,[object Object],[object Object],[object Object],[object Object],CICS TS Web Service Requester CICS Web Services support Business logic WebSphere Application Server (any platform) Pipeline J2EE DB2 WS-Security Authentication SOAP/HTTPS Confidentiality and Integrity Authorization Alice D B I

CICS Web Services Support – Transactional interoperation ,[object Object],[object Object],[object Object],[object Object],[object Object],CICS TS Web Service Requester CICS Web Services support Business logic WebSphere Application Server (any platform) Pipeline VSAM DB2 EJB DB2 WS-Atomic Global transaction SOAP D B I

CICS Web Services - Capability ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

RMI over IIOP (EJB) ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],3

Enterprise JavaBeans CICS TS EJB Business Logic WAS B EJB Business Logic B CICS TS EJB Business Logic WAS B EJB Business Logic B OR CICS TS Web Service Client Other/Any EJB Business Logic WebSphere Application Server Web Service Support WebSphere App Server B EJB Integration Logic B WAS=WebSphere Application Server

Enterprise JavaBeans - Capability ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

WebSphere Process Server and ESB ,[object Object],CICS TS CICS Web Services support Integration logic Data access Business Function D I Business logic B (Service Provider) Staff Support Visual Composition Editor

Advanced ESB – WebSphere Message Broker ,[object Object],[object Object],[object Object],[object Object],[object Object],CICS TS Client CICS Program Business logic B Other/Any WebSphere Message Broker z/OS or distributed Web Service CICS Adapter WebSphere MQ Web Service Files WebSphere MQ Many, Many

WebSphere Datapower ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],CICS TS Client CICS Program Business logic B Other/Any Web Service WebSphere MQ Web Service XML WebSphere Datapower

Recommendations for integration Limit to specialized applications. Plan to adopt Web services where possible Mature technology that provides low level and flexible connectivity to CICS Lowest common denominator for CICS connectivity 6. TCP/IP sockets Use for Web services and to support browsers for niche applications Industry-wide open standard Ubiquitous for direct web browser and basis for web services Lightweight W3C standard for communications over the web 5. HTTP Continue to exploit WebSphere MQ for basic messaging and flowing Web services Widely adopted B2B integration technology that includes CICS connectivity Comprehensive industry standard for assured messaging 4. WebSphere MQ Standard transport Limit to apps that can benefit from consistent J2EE connectivity. Continue to exploit Java as an application language Niche technology that provides highly functional standards-based connectivity to CICS Comprehensive J2EE standard for J2EE components including EJBs in CICS 3. Enterprise JavaBeans Continue to exploit JCA and use within an SOA and ESB Widely adopted precision CICS connectivity with highest qualities of service today Lightweight J2EE standard for calling CICS and other EIS’s 2. JCA Establish plans to transform CICS apps so they can participate in a SOA pattern with Web services Industry-wide open standard integration technology that includes CICS connectivity. Improving QoS, features and performance Comprehensive W3C standards for messaging over the Web supporting SOA to and from CICS 1. Web services Recommendation Positioning Description Standard architecture

Summary ,[object Object],[object Object],[object Object],[object Object]

Cics Connectivity

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Cics Connectivity