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© 2008 IBM Corporation
SOA on your terms and our expertise
Click to edit Master Title style
GSE 2008, Brussels, Belgium
Martin Cocks
CICS SOA and WSRR
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GSE 2008, Brussels, Belgium
© IBM Corporation 2008. All Rights Reserved.
The workshops, sessions and materials have been prepared by IBM or the session speakers and reflect their own views. They are provided for informational purposes only, and are neither intended to, nor shall have the effect of being, legal or other guidance or advice to any participant. While efforts were made to verify the completeness and accuracy of the information contained in this presentation, it is provided AS IS without warranty of any kind, express or implied. IBM shall not be responsible for any damages arising out of the use of, or otherwise related to, this presentation or any other materials. Nothing contained in this presentation is intended to, nor shall have the effect of, creating any warranties or representations from IBM or its suppliers or licensors, or altering the terms and conditions of the applicable license agreement governing the use of IBM software.
References in this presentation to IBM products, programs, or services do not imply that they will be available in all countries in which IBM operates. Product release dates and/or capabilities referenced in this presentation may change at any time at IBM’s sole discretion based on market opportunities or other factors, and are not intended to be a commitment to future product or feature availability in any way. Nothing contained in these materials is intended to, nor shall have the effect of, stating or implying that any activities undertaken by you will result in any specific sales, revenue growth or other results. Performance is based on measurements and projections using standard IBM benchmarks in a controlled environment. The actual throughput or performance that any user will experience will vary depending upon many factors, including considerations such as the amount of multiprogramming in the user's job stream, the I/O configuration, the storage configuration, and the workload processed. Therefore, no assurance can be given that an individual user will achieve results similar to those stated here.
All customer examples described are presented as illustrations of how those customers have used IBM products and the results they may have achieved. Actual environmental costs and performance characteristics may vary by customer.
The following are trademarks of the International Business Machines Corporation in the United States and/or other countries. For a complete list of IBM trademarks, see www.ibm.com/legal/copytrade.shtmlAIX, CICS, CICSPlex, DB2, DB2 Universal Database, i5/OS, IBM, the IBM logo, IMS, iSeries, Lotus, OMEGAMON, OS/390, Parallel Sysplex, pureXML, Rational, RACF, Redbooks, Sametime, Smart SOA, SupportPac, System i, System i5, System z , Tivoli, WebSphere, and z/OS. Java and all Java-based trademarks are trademarks of Sun Microsystems, Inc. in the United States, other countries, or both.Microsoft and Windows are trademarks of Microsoft Corporation in the United States, other countries, or both.Intel and Pentium are trademarks or registered trademarks of Intel Corporation or its subsidiaries in the United States and other countries.UNIX is a registered trademark of The Open Group in the United States and other countries.Linux is a registered trademark of Linus Torvalds in the United States, other countries, or both.
Other company, product, or service names may be trademarks or service marks of others.
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GSE 2008, Brussels, Belgium
Objectives Understand the value of using a Service Registry and Repository
– The value of SOA
– The importance of SOA Governance
– The value of Meta-data
WebSphere Service Registry and Repository– Overview
Publishing CICS service definitions into WSRR– Batch
– Rational Developer for System z (RDz)
Retrieving service definitions from WSRR– Batch
– Rational Developer for System z (RDz)
Managing service definitions within WSRR– Enabling Governance
– Properties
– Classifications
– Notifications
– Searching
– Access Control
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GSE 2008, Brussels, Belgium
The Value of SOA
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GSE 2008, Brussels, Belgium
What is Service Oriented Architecture (SOA)?
• Business Goals Flexible, Responsive, Time to market
• IT systems can be inflexible Tightly coupled applications, difficult to change, difficult to re-use
• SOA is an architectural style that can help the business goals
Develop loosely coupled re-usable services with well-defined interfaces Link services together to perform business processes Provide closer alignment between your IT systems and your Business Processes
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GSE 2008, Brussels, Belgium
What is Service Oriented Architecture (SOA)?
• Break business processes into repeatable business tasks
• Consider which repeatable business tasks are common across business processes
• Develop services that perform common business tasks
• Share services between business tasks
•Eliminate duplication
•Business processes use same source of information
• Services should be loosely coupled, with a well defined interface
•Web services provide an example of loosely coupled services with well defined interfaces
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GSE 2008, Brussels, Belgium
The promised benefits of SOA
Business process vitality
New value through reuse of assets
Improved connectivity
Closer alignment of IT to business
Business Flexibility
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GSE 2008, Brussels, Belgium
The Importance of SOA Governance
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GSE 2008, Brussels, Belgium
SOA brings new emphasis to the governance challenges within organizations
How do I eliminate “rogue services” and ensure control of my SOA?
How do I increase service reuse?
How do I govern services as part of my SOA?
How do I enable enforcement of policies across all internal and external services?
How do I help services interact efficiently and dynamically with each other?
How can I help my ESB execute in the right context?
How do I manage the services lifecycle?
How do I optimize service interactions to be better aligned with business process?
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GSE 2008, Brussels, Belgium
Without proper management and governance of your SOA…
This could become… … like this
The promise of SOA A pile of services
… and so would go the promised benefits of SOA
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GSE 2008, Brussels, Belgium
SOA Governance and Management
The governance model defines:
– What has to be done? The Service lifecycle
– How is it done? The governance decision path based processes
– Who has the authority to do it? As defined by the roles and responsibilities of the Service lifecycle processes
– How is it measured? The vitality and conformance checkpoints
Processes
People
Technology
Services
The focus of SOA is the
Services Model
Governance is enabled by management– Governance determines who has the authority to make a decisions
– Management is the process of making and implementing the decisions
Enable IT organizations to drive reuse of services, define and enforce Enable IT organizations to drive reuse of services, define and enforce policies, and manage the life cycle of servicespolicies, and manage the life cycle of services
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The Value of Meta-Data
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The value of Meta-data
Add meta-data to individual documents to provide additional information– For example
• Contact name• Contact telephone number• Department code• Owning system
Classify documents to enable them to be easily located by others– For example
• Internal Applications– Customer Related– Employee Related
• External Applications– Ordering– Registration
Provide logical links between documents that have a logical association– For example
• WSDL describes service interface• Documentation for service also available• Add a relationship between the two so that from one of the documents, the other can be easily
found
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GSE 2008, Brussels, Belgium
WSRR Overview
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GSE 2008, Brussels, Belgium
WebSphere Service Registry and Repository (WSRR)
Enables governance through configurable service lifecycle, classifications and access controls
Manages service metadata while providing better search granularity than most UDDI-based products
User-friendly UI to facilitate design time discovery
Provides location transparency through runtime access
Stores all service artifacts, not just WSDL
Provides fully configurable functionality to classify services
Supports state model functionality to manage service lifecycles in a shared environment
Service notification to facilitate communication between service consumers and providers
Enforces consumer access to services
Simple version management functionality
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GSE 2008, Brussels, Belgium
The WebSphere Service Registry and Repository provides value throughout the SOA lifecycle
WebSphere Service Registry and Repository
Publish Find Enrich GovernManage
Encourage ReuseFind and reuse services for building blocks for new composite applications.
Encourage ReuseFind and reuse services for building blocks for new composite applications.
Enhance ConnectivityEnable dynamic and efficient interactions between services at runtime.
Enhance ConnectivityEnable dynamic and efficient interactions between services at runtime.
Enable GovernanceGovern services throughout the service lifecycle
Enable GovernanceGovern services throughout the service lifecycle
Publish Find
Enrich
Govern Manage
Help optimizeservice performanceEnable enforcement of policies. Impact analysis
Help optimizeservice performanceEnable enforcement of policies. Impact analysis
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WSRR default lifecycle
CreatedCreated
PlanPlan
ModelModel AssembleAssemble
DeployDeployManageManage
Authorize DevelopmentAuthorize Development
CertifyCertify RepairRepair
ApproveApprove
DeprecateDeprecate
RetiredRetired
RevokeRevoke
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GSE 2008, Brussels, Belgium
Example: What actions need to occur in the “Plan” transition?
CreatedCreated
PlanPlan
ModelModel
Potential Actions for “Plan” Transition
● Define Service Focus - Understand the important business domains affected
● Identify Service Owners – Understand who will own the service
● Define Service Funding - Understand how the service will be funded
● Identify the Service – identify the service candidates (meet-in-the-middle approach)
● Specify the Service – Choose service candidate which will be developed, understand service dependencies, service composition, QoS requirements, message format specifications
● Realize the Service – Map technology to the service, make architectural and design decisions on technology implementation, standards compliance, adapters required for legacy systems
Potential Actions for “Plan” Transition
● Define Service Focus - Understand the important business domains affected
● Identify Service Owners – Understand who will own the service
● Define Service Funding - Understand how the service will be funded
● Identify the Service – identify the service candidates (meet-in-the-middle approach)
● Specify the Service – Choose service candidate which will be developed, understand service dependencies, service composition, QoS requirements, message format specifications
● Realize the Service – Map technology to the service, make architectural and design decisions on technology implementation, standards compliance, adapters required for legacy systems
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GSE 2008, Brussels, Belgium
Publishing and RetrievingDefinitions in WSRR
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GSE 2008, Brussels, Belgium
Publish WSDL from z/OS batch to WSRR
Input Parameters:Language, container, end of URI, Provider Application Name, etc...
WSBind
WSDL
Input Parameters:WSDL document location, meta data – description, name, version, encoding, user-defined name+value, WSRR server location + security credentials
LanguageStructures
OutputInput
WSRRWSRR
z/OS Batch JCL
.
.
.
.
.
.
.
.
.
.log
DFHWS2SRPublish to WSRR
DFHLS2WSBuild WSDL and WSBind
file from Language Structure(s)
Web service WSRR API
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Publishing WSDL from RDz into WSRR You can enable your CICS COBOL applications as Web
services using Rational Developer for System z (RDz). Having done this, the WSDL describing your CICS Web service can be published from RDz into WSRR by using a WSRR eclipse plugin.
Use the WSRR eclipse plugin to enable the publication of this WSDL to WSRR.
Pre conditions
– RDz successfully created WSDL
– Eclipse plugin installed into RDz
– Eclipse plugin configured with hostname and port of WSRR server
Process flow
– From Navigator view, right click on WSDL and select Service Registry -> Publish Document(s)
– Specify the Name, Namespace, Version, Description and File Type (WSDL) of the document
– Click Finish
Post conditions
– Log of activities
– Web service definition is available in service registry
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GSE 2008, Brussels, Belgium
Read WSDL from WSRR from z/OS batch
Input Parameters:Language, container, end of URI, Provider Application Name, etc...
WSBind
WSDL
Input Parameters:WSDL unique token, WSRR server location + security credentials
log LanguageStructures
OutputInput
WSRRWSRR
z/OS Batch JCL
.
.
.
.
.
.
.
.
.
.
DFHWS2LSBuild Language
Structure(s) & WSBIND file from WSDL
DFHSR2WSRead from WSRR
Web service WSRR API
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GSE 2008, Brussels, Belgium
Read a WSDL document from WSRR into RDz
WSRR 6.1 provides an eclipse plugin
– This interoperates with previous versions of WSRR
– Use the WSRR plugin to retrieve WSDLs from WSRR into an in-memory cache.
– Select the WSDL you wish to use and click on it to import it into a project
– Use the Enterprise Service Tools to generate the COBOL copybooks and WSBIND file from the WSDL.
– Develop your Web service requester or Web service provider using the generated COBOL copybooks
– This plugin requires an Eclipse 3.1 platform or higher
– A different plugin version is shipped with previous versions of WSRR and in SupportPac SA02
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Enabling Governance – Managing Service Definitions within WSRR
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Enabling Governance
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Enabling Governance
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Enabling Governance
Once a WSDL document is published into WSRR, governance can be enabled on it. This starts the process of taking the document through the lifecycle that you are using.
Documents can be governed individually, or as a collection. A Concept document can be used as a logical high level document that contains relationships to a number of other documents. The Concept can then be governed, which causes all the documents it has relationships with also to be governed.
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GSE 2008, Brussels, Belgium
Other Functions AvailableWithin WSRR
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Properties
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Classifications
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Notifications
WSRR supports notification by having service consumers subscribe to a service’s notification events.
These events include:
– Change in state within the lifecycle
– Change in classification
– Change in endpoint
– Change within the metadata of a service
– Any creation, update, delete or transition
An email is sent when an event occurs
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GSE 2008, Brussels, Belgium
Searching
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GSE 2008, Brussels, Belgium
Access Control
WSRR controls access to metadata not to services. Access control to services is left to middleware (ESB).
Having a classification requires access control to ensure the proper users (and only the proper users) have the ability to update the appropriate metadata
WSRR can integrate with enterprise wide security models by leveraging Tivoli Identity Management / Tivoli Access Management.
The roles defined within the access control can be based on any categorization of the service – business domains, states, geography, etc.
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GSE 2008, Brussels, Belgium
WebSphere Service Registry and Repository: Additional information
WebSphere Service Registry and Repository - Product Web Site
– http://www-306.ibm.com/software/integration/wsrr/index.html
WebSphere Service Registry and Repository – Information Center
– http://publib.boulder.ibm.com/infocenter/sr/v6r1/index.jsp
Rational Developer for System z - Product Web Site
– http://www.ibm.com/software/awdtools/rdz/index.html
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GSE 2008, Brussels, Belgium
Summary Understand the value of using a Service Registry and Repository
– The value of SOA
– The importance of SOA Governance
– The value of Meta-data
WebSphere Service Registry and Repository
Publishing CICS service definitions into WSRR– Batch
– Rational Developer for System z (RDz)
Retrieving service definitions from WSRR– Batch
– Rational Developer for System z (RDz)
Managing service definitions within WSRR– Enabling Governance
– Properties
– Classifications
– Notifications
– Searching
– Access Control
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GSE 2008, Brussels, Belgium
Any Questions
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GSE 2008, Brussels, Belgium
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