© 2009 ibm corporation cics cics connectivity ronnie simon ibm belux - websphere...

© 2009 IBM Corporation

CICS

CICS Connectivity

Ronnie SimonIBM BELUX - WebSphere

[email protected]

2

IBM

© Copyright IBM Corporation 2009

Built to Support Evolution!

Business SystemsFront End

Browser

Server

PersonalComputer

"Dumb" Terminal

e-business

e-business with Core Business Systems

Client-Server

GUI Front-End

TerminalProcessing

Internet Enterprise Network Central Site

Web Server

Appl. Server

Personal Computer

Tim

e

Applic

ati

on Invest

ment

Pro

tect

ion

CoreBusiness Services

CoreBusiness Systems

Applications

Rich Client

Rich Client

Business SystemsDatabases

Browser

Web Server

Appl. Server

IBM Software Group | WebSphere software

3

The Business Benefit of Application Reuse ?

http://www.logiclibrary.com/pdf/wp/ROI_of_SOA.pdf

24%

F

aste

r!

SOA Components

Non-SOA Components

24% Faster ROI using

SOA!

“Industry has already invested trillions in IT. If faster results can be achieved reusing rather than rewriting, only a fool would chose to rewrite”

-- John Balderson, The Spencer Group

What is the cost to your IT budgetif you are not already reusing your applications?

4

IBM


CICS Red Books – Most Popular

1. Java Application Development for CICS (14,000+)

2. Application Development for CICS Web Services (14,000+)

3. Architecting Access to CICS within an SOA (13,000+)

4. CICS Transaction Gateway for z/OS Version 6.1 (11,000+)

5. CICS Performance Analyzer (7,000+)

6. CICS Transaction Server V3R1 Channels and Containers Revealed (7,000+)

Securing CICS Web Services

Updated

5

IBM


Connecting to CICS …

1. CICS Integration strategy ( P A I B D )

2. Web Services and WSRR integration

3. Web 2.0 integration strategy

4. Business events for Realtime Information and Insight

6

IBM


CICS application architecture – a framework for reuse

Best practice in CICS application design is to separate key elements of the application, in particular:- Presentation logic eg. 3270, HTML, XML

- Integration or aggregation logic Menu, router, tooling

- Business logic Reusable component

- Data access logic VSAM, DB2, IMS, …

Provides a framework for reuse and facilitates separation of concerns, clear interfaces, ownership, and optimisation

CICS Transaction Server

Client3270

PresentationIntegration

logicData

access

Transaction

DIP

Business logic

B


7zWAS - CICS © 2009 IBM Corporation

Reusing 3270 presentation logic – Link3270 bridge

Some programs combine presentation, integration, and business logic

Link3270 Bridge provides a COMMAREA interface to BMS and terminal-oriented programs

– ADS information in the COMMAREA is passed to the BMS application

– Does not use VTAM or screen scraping

– No changes required to existing BMS application

CICS TS

3270 terminal DI/BP

Transaction

I/BP

Client Link3270 Bridge



Connectivity to CICS programs

Typical clients…– Web service requester

– Java servlet or EJB running in a J2EE app server

– C# application running in a Microsoft .NET VM

– Web browser

– Messaging middleware

Adapter can be – External or Internal

– Written or generated by tools

A

CICS TS

3270 terminal

DB

P

Transaction

Client

A

A

I

P Presentation logic

Integration logicI

Business logicB

Data access logicD

CICS connectivity for SOA



IBM Rational Developerfor System z

Rational Application Developer or Rational Business Developer

IBM Rational Developer for System z version 7.5

CICS BMS/IMS MFS Map Support CICS BMS/ IMS MFS Map Support

• Visually create and modify BMS Map sets or IMS/MFS

• Generates JCL• Work with local or remote maps

z/OS Application Development

z/OS Application Development• Work with z/OS resources like COBOL,

PL/I , C, C++, JCL, etc.• Interact with the Job Entry Subsystem (JES) to

submit jobs, monitor jobs, and review job output• Perform dataset management actions• Perform typical edit, compile, and debug tasks

on remote z/OS resources from the workstation

XML Services for the Enterprise

XML Services for the Enterprise- SOA support for COBOL or PL/I using CICS

or IMS • Bottom-up/Top-down or meet-in-the-middle

COBOL/PLI to XML mapping support• meet-in-the-middle development scenario

tooling wizards. for CICS, IMS, and batch applications

CICS Service Flow support

CICS Service Flow support• Supports CICS Service Flow Feature• Wizards to build service flows out of your

existing COMMAREA WSDL and Terminal based CICS applications.

DB2 Stored Proc for COBOL - PL/I

DB2 Stored Procedure for COBOL and PL/I

• Create DB2 stored procedures on z/OS in either COBOL or PL/I

• Build and catalog support for the DB2 stored procedure

• Debug z/OS based stored procedures from workstation

z/OS Tooling Integration

z/OS Tooling Integration• Read/Write/Update VSAM datasets via

integration with IBM File Manager• Access IBM Fault analyzer reports for

analyzing ABENDS and associating back to source code

DB2 App Generator wizard

DB2 App Generator wizard• Generate WSDL, JCL and CICS COBOL

program to access DB2• Generate CRUD programs code from existing

DB2 table, which can also be integrated into web service applications

VSAM App Generator wizardVSAM App Generator wizardGenerate JCL , BATCH or CICS

COBOL program skeletons to access VSAM/QSAM

UML to COBOL Transformation(*) UML to COBOL Transformation(*)• Provide UML assets in order to represent

COBOL in UML (Models, Profiles, Patterns)• UML transformations generate models more

specific to COBOL target• Final transformation generates COBOL source

(*) Requires Rational Software Architect (RSA)

Core functions

Secondary functions

10

IBM


Web Services Enablement Styles

Generate

ExistingBusiness App

(e.g. COBOL, C, C++, PLI)

New service: WSDL

Bottom-up

Generate

Existing service description WSDL

NewBusiness App (COBOL,

C, C++, PLI)

Top-down

Map andGenerate

Meet in the middle

ExistingBusiness App

(COBOL, C, C++, PLI)

Existing service description WSDL

11

IBM


CICS support for WSRR

A Web service registry is the 3rd aspect of Web services

• Requester, provider, registry• WSRR provides central repository for Web services and... Query/search, user defined meta-data, lifecycle, version #, relationships, dynamic service

selection and binding, governance, enforce policies, federation with other repositories (e.g. UDDI)

Institute best practices, encourages discovery and reuse of Web services

CICS and WSRR• Publish WSDL representing CICS Web service providers• Retrieve WSDL representing Web services to be used by CICS requesters• Complements CICS Web services assistants, WSDL editors, etc.• Currently available as SupportPac CA1N for CICS TS V3



Two models of CICS SOA integration

CICS TS

Web service Client

CICS Program

Business logic

B

Requester

connector

Web services end-point

Service Provider

DIntegration

logic

I

ASOAP

CICS TS

Web service Client

CICSWeb

servicessupport

Integration logic

Dataaccess

Business Function

DI

Business logic

B

Requester (Service Provider)

SOAPA


13

CICS Transaction GatewayCICS Transaction Gateway

CICS TS

CICS Program

Business logic

B

CICS Transaction

Gateway

CICS TGServlet, JSP,

EJB

WAS

J2C

Any Java application

ECI

Many Languages, Many Platforms

WAS=WebSphere Application Server

© 2009 IBM Corporation14

WEBSPHERE APPLICATION SERVER

15

CICS Transaction GatewayCICS Transaction Gateway

CICS TS

Web Service Client

CICS Program

Business logic

B

Other/Any

CICS Transaction

Gateway

CICS TG

WebSphere Application Server Web

Service Support

WAS

J2C

WAS=WebSphere Application Server

I

D



CICS Transaction Gateway Topologies

Whitepaper: Integrating WebSphere Application Server and CICS using the CICS Transaction Gateway http://www.ibm.com/software/htp/cics/ctg/zos/

CICS

Network

HTML

WebSphere Application Server

and CICS TG on System z

WebSphere Application Server and CICS TG on a

distributed platform


on a distributed platform

CICS TGz/OS

Topology 1

Topology 3

Topology 2

System z

ServiceConsumer SOAP

CTG topologies



Exposing CICS applications as Web service - Connector approach

CICS TS

Web Service Client

CICS Program

Business logic

B

Other/Any

CICS Transaction

Gateway

CICS TG


Service Support

WAS

JCA D

The J2EE Connector Architecture (JCA) defines the common client interface (CCI) for a Java client to drive interactions with enterprise information systems such as CICS

The CICS Transaction Gateway (CICS TG) provides the JCA access to CICS

A

Wizards are available in Rational Application Developer, WebSphere Integration Developer, and Rational Developer for System z to generate the objects (‘J2C bean’) that do any necessary conversion and data formatting before invoking the CICS program via the CICS TG.




CICS TS

CICS Program

Business logic

B

Web Service Client

Other/Any

CICS TGWebSphere Application Server Web

Service Support

WAS (any platform)

J2C

Topology 1

DB2

EJB

SOAP

SNA

TCP/IP

Supports ECI and EPI resource adapters

Local protocol specified on connection settings of connection factory

– Servername parameter used to specify IPIC or Client daemon connection

Communication from WebSphere can be SNA or TCP/IP, or IPIC if CICS system is V3.2

– IPIC allows sending >32 KB

Supports asserted identity and 2PC XA transactions if IPIC connection used from CICS TG V7.1 to CICS TS V3.2

Alice

CICS TG V7.1

Client daemon

IPIC driver IPIC

CTG topologies



CICS TS

CICS Program

Business logic

B

Web Service Client

Other/Any

CICS Transaction

Gateway

CICS TG (z/OS)WebSphere Application Server Web

Service Support

WAS (any platform)

J2C

Topology 2

DB2

EJB

SOAP

EXCI

IPICTCPSSL

Remote protocol specified on connection settings of connection factory can specify TCP or SSL

Alice

CICS TG V7.1

Communication from Gateway daemon can be EXCI or IPIC

– IPIC server definitions are stored in the configuration file of the Gateway daemon

– IPIC allows sending >32 KB if CICS system is V3.2

CTG topologies



CICS TS

CICS Program

Business logic

B

Web Service Client

Other/Any WebSphere Application Server Web

Service Support

WAS (z/OS)

J2C

Topology 3

DB2

EJB

SOAP

EXCI

IPIC

Local protocol specified on connection settings of connection factory (local:)

Communication from WebSphere (servant region) can be EXCI or IPIC

– IPIC allows sending >32 KB if CICS system is V3.2

Remote connection support is also provided for this topology

Alice

CICS TG V7.1

CTG topologies

21

CICS Web Services SupportCICS Web Services Support – – Transactional interoperationTransactional interoperation

• WS standards provide two-phase commit transactional support WS-AtomicTransaction WS-Coordination

• All flows are via TCP/IP• WebSphere Application Server becomes the transaction manager

CICS TS

Web Service

Requester

CICSWeb

Servicessupport

Businesslogic

DB


(any platform)

Pipeline

VSAM

DB2I

EJB

DB2

WS-Atomic

Global transaction

SOAP

22

CICS TS

Web Service Client

CICS Program

Business logic

B

Other/Any

CICS Transaction

Gateway

CICS TG (z/OS)


Service Support

WAS (any platform)

J2C

CICS Transaction Gateway – CICS Transaction Gateway – Transactional Transactional

interoperationinteroperation

VSAM

DB2

DB2

EJB

SOAP EXCI

RRS

TCP/IP

XA

Global transaction

• J2EE standards provide for two-phase commit recovery XA protocol used for syncpointing and recovery CTG issues RRS to communicate with CICS

• CICS Transaction Gateway must reside on z/OS• CICS Transaction Gateway can provide high availability solution• WebSphere Application Server controls the transaction


WEB 2.0


Typical challenges faced by IT organisations and the businesses they support

Nu

mb

er o

f u

sers

per

ap

pli

cati

on

# of applications

… so the backlog of simple, tactical applications is not adequately addressed

Strategic, long-term apps consume all resources …

Lack of agility – IT can’t respond fast enough to business requirements Spreadsheet “apps” hard to manage, share, keep current Silo-ed, outdated information

Business Challenges

IT is backlogged and suffering from too many business requests Underground or “shadow” IT

Security violations Loss of information

IT Challenges

25

A little bit of theory

Mashup– A lightweight web application that combines data from more than one

source

REST– Uniform access via HTTP – GET, POST, PUT, DELETE

– All relevant resources are addressable via URIs

Widget– a small program or piece of dynamic content that can be easily placed

into a web site.

Feed– Web feed is a data format used to provide frequently updated content

26

IBM


IBM Provides A Blueprint For Helping Customers Unlock The Value Of Their Enterprise Assets With Web 2.0

Lotus Mashups1

WebSphere Portal

Use quick & easy composition for immediate value

Liberate your services to the

Web

Expose services via widgets/feeds for maximum reuse

IBM Middleware

Data

Applications

REST

IBM REST-enabling all its middleware

InfoSphere Mashup Hub1

Lotus Widget Factory1

WebSphere sMash

Mashups

1 IBM Mashup Center components

27

WebSphere sMash & Lotus Mashups

Lotus Mashups: Assemble of mashable assets.widgets into dynamic mashups

WebSphere sMash: Use dynamic scripting languages to create and run widgets

28


By clicking on the link, other properties already insured in the same area – and the resulting

exposure – are added to the map

Insurance Underwriting Mashup

29


-

CICS Web 2.0 ATOM Feeds

Enable CICS applications to - Provide live information for Web 2.0 consumption- Integrate with related data- Give full picture in a single holistic view

Make new kinds of applications based on up-to-date content and information- Decision-support tools for knowledge workers- Composite user interfaces for expert workers- Information feeds & widgets to consumers for use in

their own mashups Develop using WebSphere sMash or Rational

Developer for z with EGL In CICS V3, use SupportPac CA8K to generate

feeds

High level architecture: CICS Atom feeds

PC Browser

Map API

z/OS 1.9

CICS Transaction

Server DB2 9 for z/OS

InsuranceCustomers and

Policies

Mainframe

Atom feeds

IBM LotusMashupsServer

Unix

Servlet


BUSINESS EVENTS

39

IBM


Event Sources

Know What’s Happening, When to Act, and What to Do

Turning Insight into Action Leveraging Business Event Processing

What’s Happening ?What’s Happening ?

When to Act ?When to Act ?

What to Do ?What to Do ?


CICS Transactions

New! WBE Integration with CICS Transaction ServerCapture Mainframe Event Sources for Smarter Business Outcomes

Stock Trades WebSphere

Business Events

Events

Actions to Investigate

suspicious activity

WebSphereBusiness Monitor

Account Activity

WebSphereProcess Server

Providing Real-Time Detection and Compliance

CICS TS V4.1CICS TS V4.1

Publish Find

WebSphere Service Registry and Repository

WBE RuntimeEvaluations Correlations

!

CICS Events SupportPac 4Q08Full CICS events support 2Q09

Events

41

IBM


Evaluations Correlations

Event Sources

!

Know What to detect, When to Act and What to Do

Turning Insight into Action Leveraging Business Event Processing

What needs to be detected ? What needs to be detected ? When to Act ?When to Act ?

What to Do ?What to Do ?


Allows business users detect, evaluate and react to business events in real time

Designed for process analysts─ Understands business language and vernacular─ Enables straightforward expression of business logic─ Codeless, Graphical Authoring tools

Accepts events from many sources─ “Derived" events─ Plug & Play to extend your existing SOA and BPM

infrastructures

Sense meaningful patterns─ Simple and complex rules patterns─ Define filters and conditions─ Event flows and long running correlations

Initiate the appropriate response─ Take action when those patterns form─ Drive existing services (WPS business process, ESB, etc.)─ Automated Tasks (Update DB, write to file, etc.)─ Notifications (Email, pager, etc.)

WebSphere Business EventsSense when to act … AND ACT!!

Event Definitions

Event Flow

Event Processing


Scenarios

Improved Customer Relationship Management

Improved Decision Support

Improved Self Service

– WebSphere Application Server Web 2.0 feature pack exposes CICS information to desktop gadgets for Retail Banking customers.

– White label Facebook application for Retail Banking customers

Operational Dashboards

– IBM Mashup Centre plots branch, server and data centre locations against network connectivity and sales figures.


Operational Dashboards - UK bank

Business events such as major financial transactions, exceptions, threshold breaches etc. are often difficult to expose from operational systems in real-time.

Real-time event alerting can be useful for fraud detection, compliance monitoring, business intelligence and account management.

IT events from operational applications, infrastructure components and systems management often provide indicators of business issues.

Changing situations demand flexible dashboards with the ability to drill down and analyse any element of business or IT performance

Manager

Mashup

Catalogue

MashupMashupHubHub Operational

DataApplicationsBusiness ProcessesOperations

Systems Mgmt.



Transform Insight into Action with CICS Events and WBE

CICS Application Algorithms

WebSphere Business Events

WebSphereBusiness Monitor

CICS TS Version 4.1

Business Occurrences

Business Information

Events

Key Business information can be externalized from criticalApplications as execution occurs to

• Immediately update business views• Trigger other business behaviours

NO APPLICATION CHANGE REQUIRED Business Professional

Business

LeaderWebSphere

Process Server

46

IBM


Connecting to CICS …

1. CICS Integration strategy ( P A I B D )

2. Web Services and WSRR integration

3. Web 2.0 integration strategy

4. Business events for Realtime Information and Insight into Action

© 2009 ibm corporation cics cics connectivity ronnie simon ibm belux - websphere...

Documents

cics application architecture

cics application design

ibm copyright ibm corporation

bms application cics

cics transaction gateway

securing cics web services

server slide

cics integration strategy