WSRR and WebSphere DataPower Integration
DavidSeager 110000C5XS Visits (4249)
New in DataPower 5.0 is the feature to attach DataPower mediation policies to things in WSRR, and have DataPower enforce these polices. What can such mediation policies say? They "...can express conditions based on traffic management requirements (for example, QoS or SLM policies), routing directives and schema validation, and invoking data translation stylesheet maps". For example, they can say a web service can only be invoked 5 times per second, and to reject any messages which come in over that. The dW article "SOA governance using WebSphere DataPower and WebSphere Service Registry and Repository, Part 1: Leveraging WS-MediationPolicy capabilities" describes what is possible with mediation policies, how to author these policies in WSRR 8.0, IBM Integration Developer or the DataPower Web GUI.
What this article does not detail is that in WSRR V8.0 you can attach such mediation policies to objects in WSRR which represent the non-functional attributes of a service, either the Service Level Definition (SLD) which describes the service itself, or the Service Level Agreement (SLA) between a service and its consumer. The SLA represents how much of the service a consumer has agreed to use, and so you can add a policy which actually enforces this in DataPower. For example, that a service consumer can only use a service during 9am-5pm weekdays, or only send 10 messages a second.
The new parts of the article, specifically part 3, shows how to use the new WS-MediationPolicy capabilities in WSRR to author specific Service Level Agreements, which you can enforce on the DataPower appliance without manually creating the XSLT or processing rules and actions.
A practical demonstration of the policy enforcement integration is shown in "Usi
Finally, there is an IBM Redbook which covers all of this integration between WebSphere DataPower and WebSphere Service Registry and Repository. The Redbook is called "SOA
Image from developerWorks article "Enforcing SOA message security policy with WebSphere Service Registry and Repository and WebSphere DataPower".