SOA for CICS Customers

8/8/2019 SOA for CICS Customers

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Mike Jeffery, ConsultantMike Jeffery, Consultant

[email protected][email protected]

February 2006February 2006

Service OrientatedService Orientated

Architecture, for the CICSArchitecture, for the CICS

CustomerCustomer


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Important copyright informationImportant copyright information

This presentation is written by Mike Jeffery, ExHursley Ltd, and is covered under internationalcopyright laws.

Any reuse, or distribution requires my approval The following are trademarks of International Business Machines Corporation in the United

States, other countries, or both: IBM, CICS, CICS/ESA, CICS TS, CICS Transaction Server,DB2, MQSeries, OS/390, S/390, WebSphere, z/OS, zSeries, Parallel Sysplex.

Java, and all Java-based trademarks and logos, are trademarks of Sun Microsystems, Inc.in the United States, other countries, or both.

Microsoft, Windows, Windows NT, and the Windows logo are trademarks of MicrosoftCorporation in the United States, other countries, or both.

Some graphics in this presentation are used with kind permission of IBM


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AgendaAgenda

Business needs

Service Orientated Architecture (SOA)

Architectural patterns, and components

Work flow, brokers, adapters

CICS 3.1 added value

Lets look at Version 2 as welland adapters available

Tooling

How to start


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Service Orientated ArchitectureService Orientated Architecture

Service Orientated Architecture (SOA)

means defining an execution of (say) a CICS transaction,

or a collection of CICS transactions as a serviceThis servicecan then be called and executed,'orchestrated' by an outside intelligent process

Data can be passed to the service, and received from it

by the intelligent process

The serviceis now automatic, and plays a part in a widerdefinition of a business process


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Business Needs 1/2Business Needs 1/2

Information Week Survey of business priorities showed thatthe top 4 items were -

Streamline or optimize business processes

Boost worker productivity across the companyImprove customer service

Gain better return on IT capital investments


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Business Needs 2/2Business Needs 2/2

Quick deployment of new business function

using existing working applications, and data

using partners, services, new technology

getting productivity gains from tooling

Re engineering of business processes

Workflow engines driving automatic application execution

with data being passed

VERY quick manipulation of workflow activities

Loosely coupled execution of components

nothing causes a blockage Using new technology

Web services, XML, programming language of choice

Tooling to link it all together, easily and quickly


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e-business workloads areunpredictable

Seasonally / time of day

Continuous availability is essential

Users impatient and intolerantMore complex interactions ...

Reach further back into network

Require more transactions

100Mhits/day

15M

trans/day

12% signon

40%order

3% Buy

45% browse

Business interactions

ee--business problem statementbusiness problem statement

Time scale

Volumes


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Connecting to/from a CICSConnecting to/from a CICS serviceservice

Websphere MQ

Just MQ, via Broker, or Workflow

XML, Soap, any program, any bridge, any adapter

HTTPGateways, XML, Soap, any program, any bridge , anyadapter


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Used in the connection to/from a CICSUsed in the connection to/from a CICS serviceservice

CICS Transaction Gateway

being driven by another CICS, or Websphere Application

Server

Java programs, EJB's

Web Services

SOAP, XML

Programs

EJB, Java, perhaps instigated by Server Foundation

CICS Adapters

CICS Integrator Agent, a part of V3Integrator Agent for CICS..... A product for use with

Version 2

CICS Business Process Event Publisher


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Some termsSome terms

Business Integration (BI) is remodeling business processes

e.g. like a process for servicing an insurance claim

or updating an address fileOn Demand Computing, encompasses BI and SOA

the architecture templates, and marketing material usethese terms in the same context

Brokers used to be called Integrators

Server Foundation is an IBM Java workflow product, that

uses services

it runs in Websphere Application Serveras can a CICS Transaction Gateway

IBM also has a non Java workflow product, WebSphereWorkflow Manager 3.5


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Architectural Patterns, the different tiersArchitectural Patterns, the different tiers

Data Tier

Relational, Flat file ........

Transactional Tier

CICS, IMS .........

Business services tier

Broker, Workflow

Web Management Tier

Web site data, portals, WAS, etc

Input Tier

browser, portal, wireless, desktops, telemetry, anyprogram

Many protocols, SCADA, Web services, XML.......


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Web Sites,

Portals,

Data,

B2B

Web,

CallCenter,

Mobile,

Telemetry

Broker,

Workflow

engines

ApplicationExecution

and

Data Store

IncludingCICS, DB2,

IMS

Input TierWeb

ManagementTier

ProcessControl Tier

Application /Data Tier

Work mostly instigated by Input Tier

Each interaction takes an individual path dependent on data

Work ebbs / flows through the model , controlled by the Process Tier

CICS has data and transaction requests flowed automatically

A Logical view of a re-engeneered architecture


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Workflow foils did not convertWorkflow foils did not convert


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Message BrokersMessage Brokers

Message Hub/Broker

Transformation

Business Rules

Intelligent Routing

Adapter


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Adapters, their usesAdapters, their uses

iSeries

NT

Any

CICS

Sun

HP

Broker

Modeling

Broker

Broker

Workflow

A

A

A

A

A

A


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CICS as aCICS as a serviceservice

Each application can be aservice

CICS and non CICS

It can be used/reused, ondemand

Workflow sets a path through

applications

CICS and non CICS

The business process ismodeled in the Workflow

engine


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The process control tiers, workflow and SOAThe process control tiers, workflow and SOA

Workflow engines use / need

An inventory of services

Memory test haha, CICS apps are defined as a servicewith lots of other services, on many platforms

Loose coupling via a messaging infrastructure

They are a process control engines

that run business processes

they are interuptable

hold state, over a large period of time if need be

have many instances of the same process active at onetime


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The process control tiers, brokersThe process control tiers, brokers

Brokers can

Change MQ message structure, format

Select data from fieldsMake new messages

in new formats

Issue SQL callsStore data

invoke different message models (like publish / subscribe)

They work on MQ messages 'in flight' and can provide a

useful process point into / out of CICS


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CICS V3 how does this help 1/2CICS V3 how does this help 1/2

New function makes SOA easier, more automatic in baseproduct

SOAP built into the product

1.1 and 1.2 level

'pipelines' are good, SOAP call/request is automatic

no install/migration needs

easier for inbound/outboundHTTP 1.1 with outbound API

Transport Layer Security (TLS) support

Improved SSL V3 supportcaching, more secure connections

XPlink for C and C++ programs

Threadsafe WEB commands, many new commands too !

Threadsafe OTE (Open Transaction Environment)

applications


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CICS V3 how does this help 2/2CICS V3 how does this help 2/2

Continued............

EJB 2.1 deployment descriptor toleration

Websphere V6 tooling can deploy EJB 1.1

32K COMMAREA limit removed by using 'containers'

Codepage conversion enhancements

Application templates for easy start

Catalog manager and purchase order applicationsLots of Cipher suits supported (AES)

selection of encryption levels

Mixed case passwordsEnhancements to revocation processing


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Summarizing CICS V3 for SOASummarizing CICS V3 for SOA

Their are more CICS V3 enhancements

See other SHARE presentations for the full content

I've just selected the parts that give you more SOAfunctionality

This means you have a scalable, secure, atomicWeb Services transaction in CICS.

CICS transactions are servicesthat can be calledfrom any / many environments


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CICS V3.1 adaptersCICS V3.1 adapters

CICS Integrator Adapter for z/OS (CIAZ)

built into V3

provides adapters framework for

3270, Commarea, FEPI, MQ

in V2 CICS WEB SERVICES you have to handlethe encode/decode yourself

WSED tooling will do it for you CIAZCICS 3270 Bridge Adapter for z/OS (C3BA)

V2 and up

WSED tooling allows developmentwith navigation through screens


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And the tooling ..........in CICS.........And the tooling ..........in CICS.........

CICS Web Services Assistant, provided with V3

runs as a batch job

maps XML onto structures for Cobol, PL/I and Cconverted automatically at runtime

inbound / outbound

performance figures are good

check my zJournal article ! free copy in the trade show !

Make no mistake, this is a VERY useful tool !!!


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And the tooling ..........in Websphere workbenchesAnd the tooling ..........in Websphere workbenches

WebSphere Studio Enterprise Developer (WSED) V6

Eclipse based, covers MANY development needs, many

platformsAllows development of Web Services applications

spanning all environments, CICS ones tested on

distributed CICS

Service Flow Modeler, this is the tooling for CICS

Technology preview, sign up on the IBM web site

Works with HATS, 3270 bridge, and CIA

allows whole scope of program development tocommunicate with CICS services


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CICS Business Event Publisher for MQSeries V1.2CICS Business Event Publisher for MQSeries V1.2

Detects application and data events in CICS without

changing your applications

Does not interfere with the application operationDistributes information / data using MQ

Your CICS systems can automatically trigger actions onanything

eg phones, pagers, application programs, workflow

engines

Very easy setup

Works in a similar way for IMS/DB and DB2


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CICS Business Event Publisher for MQCICS Business Event Publisher for MQ

Databaseserver

3270

Rules VSAMdatabaseCICS TS

TC True

Message Server

MQ Queuesand Q ManagerOperations

The World

Admin

Client


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WAS SF, to CICS EJBWAS SF, to CICS EJB

New Java

Programs

Reworked Cobol

programs

Existing CobolPrograms

CI

C

S

Web

Servicesor

CIAZ

WebsphereEnvironmentWebsitemanagement,ServerFoundation,

CTG

Web Access


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Why should I look at SOA ?Why should I look at SOA ?

It answers your companies senior management's concernsBusiness process re-engeneering

Doing more with less

Improving customer serviceOptimizing IT resources

Scalable and secure

Easy deployment, reuse

Tooling is , more or less, in place


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So what do I do , how do I startSo what do I do , how do I start

Management control and commitment is needed

A project would need to look at the companies businessprocesses

Apply them to their architecture

Define your application programs as services in the

modeled business processes

Look at adapters to handle data retrieval / insertionModel intelligent processes to 'orchestrate' execution of

services

From a CICS perspective, check .........your version, version 3 is better !

adapters, CIA, CBEP

MQ usage, and configuration


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Depends who yu are ......Depends who yu are ......

What's your companies 'policy', on .........

Websphere ?

Tooling ?Web Services ?

Distributed, mainframe ?

CICS development ?

Other platforms, other application packages ?

Java programming ?

MQ / Brokers / Workflow ?

Answering these questions will determine you companiesarchitectural patterns

and show where CICS fits


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And where yu going............And where yu going............

Get ready in CICS for SOA and the use of services

make an inventory of your CICS serviceswith the WSED

toolingPrepare your CICS for use in business processes

Look at .....................

Version 3, and the CICS Integrator Adapter (CIA)

Evaluate the CICS Business Event Publisher

If you have brokers, put them next to CICS

Check the capabilities of the WSED tooling .........

its very powerful and enables the whole environment


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If you are Version 2If you are Version 2

Look at Version 3........... get it !!

if you want SOA .........Version 3 is the place to be

If you are staying on V2 for a whileYour HTTP won't use the new CIA for Web Services

You will need to install the SOAP feature / support pac

You probably need to look at an adapter

CBEP

If you use WAS, you will probably use EJB's

Check the WSED tooling support

be aware that if you will be using Web Services that thenew levels will be supported (first?) in Version3


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If you are going to Version 3If you are going to Version 3

Check the WSED tooling

inventory your CICS services

Understand and implement CIALook at CBEP

Work with the developers

and the architects


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SummarySummary

SOA addresses your senior management's needsVersion 3 is a big release for SOA

CICS servicescan be automatically 'orchestrated' byintelligent processes

Start now

Documents

SOA for CICS Customers