Web Services Management Framework - version 2.0 A presentation to WSDM-TC

1. Web Services Management Framework - version 2.0A presentation to WSDM-TC HP Team in OASIS WSDM TC Date: July 29, 2003

2. Agenda • Introduction • Technical overview • Current Status • Submission to WSDM TC • Call for action • Q/A and discussion HP presentation template user tutorial

3. Introduction • Web Services Management Framework (WSMF) 2.0 publicly released on 7/21/03 • Specifications available at http://devresource.hp.com/wsmf/ • WSMF is a set of specifications that address the requirements of a manageability solution for both MUWS and MOWS. • Developed by HP over the course of one year with input from partners and customers. • Share experience in the Web services Mgmt. area gained by developing and testing new interface technology with our ISV partners. • Contributed to OASIS WSDM TC. HP presentation template user tutorial

4. WSMF Technical Overview • Whats and Whys • WSMF components • Relationship with existing technologies • WSMF-Foundation • WS-Events • How does it work? • WSMF-WSM HP presentation template user tutorial

5. for example, status * performance * availability resource manager WSMF for example, control * correlated info * infrastructure changes What WSMF IS • A manageability framework for interfacing management systems and resources in a platform (e.g. information model) independent way • Using Web services • description, discovery and access of interfaces • distributed computing environment • Open, flexible and extensible architecture • Flexibility in distribution of implementation and who, where and how many can access • can be implemented gradually by an ISV • A collection of specifications HP presentation template user tutorial

6. What WSMF IS NOT • A modeling framework • Common modeling elements or a specific model • however, WSMF-WSM includes a model for Web services domain • An instrumentation or agent technology • A product HP presentation template user tutorial

7. Why WSMF? • Started with a need to manage Web services as resource but there are much greater needs: • Today's IT systems are getting complex! • Multiple users of manageability information brought on by this complexity and distribution of the resources being managed (e.g., federation of management functionality, distribution of the management system, "plug" management products and resources) • Management system functionality is moving towards the infrastructure (e.g., self healing systems, load balancing, cluster management) • IT services (or service view) introduce dynamic element (create/modify/EOL) • WSMF directly addresses some of the problems and provides a platform from which to address others • Applications need a language and platform independent way to expose their management capability • Web services are becoming pervasive for such uses HP presentation template user tutorial

8. WSMF Components Service Conversation WSMF-WSM WsExecutionEnvironment Attributes Operations MO interface collection WSMF- Foundation Error Reporting Grouping/Categorization Identification Relationships Life-cycle Bindings WS-Events Notification Schema Subscription Delivery Discovery Description Messaging Security … Web Services HP presentation template user tutorial

9. SNMP/MIB SNMP proxy CIM/WBEM WBEM proxy JMX proxy JMX custom proxy Proprietary Management System Managed Systems Relationship to the existing work HP presentation template user tutorial

10. any application WSMF I/F Registry Svcs (ex: UDDI) SNMP/MIB CIM/WBEM WSMF JMX Proprietary Management System Managed Systems Relationship to the existing work HP presentation template user tutorial

11. R4 R1 R8 R7 R2 Managed Object for R2 Managed Object for R4 Managed Object for R1 WSMF-Foundation Conceptual Architecture Resources Managed Object Hierarchy WSDL intf1 intf2 porttype1 Relationship Relationship porttype2 + capabilities + collection of interfaces HP presentation template user tutorial

12. Managed Objects are the management representation of managed resources. implement collection of interfaces which define management capabilities. supply these capabilities to the managed resources. may be implemented as part of the managed resource or in a different environment. When a Managed Object implements an interface, it is referred to as that Managed Object type. Relationships define the behavior and the dependencies between managed objects (model) and consequently the resources that they represent. To better support the various Web services managed domains, WSMF intends to remain model neutral and will support any model. WSMF-Foundation Architecture (Contd.) HP presentation template user tutorial

13. Collection of Interfaces are logical representations of a set of capabilities for MOs. Collection of Interfaces have the following components: namespace Attributes Operations Notifications Each attribute, operation, or notification belongs to a category WSMF has one abstract core interface – Managed Object There are 6 core categories: Monitoring Discovery Control Performance Configuration Security Additional categories for notifications Interfaces can be further extended. WSMF-Foundation Architecture (Contd.) HP presentation template user tutorial

14. Dynamic Attributes and Meta Information • Changing the current attributes support approach (get/set operations per attribute) to better support: • Scalability as the number of attributes increase • Dynamic creation of attributes • Bulk access to multiple attributes (without the use of the collection interface) • Various information models • A global pair of get/set operations • Add Meta information support for managed objects and its components (attributes, operations, notifications) • Introspection • Access control • Policies • Finer granularity of meta information • Etc. • Supported by: • Direct operations: • getOperationMetaInfo(…) • setAttributesMetaInfo(…) • Use of XPATH filters supported by a global pair of get/set operations HP presentation template user tutorial

15. WS-Events • Base schema for event notifications • Subscription based delivery • Discovery of event types • Two modes of notification delivery • pull (synchronous) • push (asynchronous) • Exposed through Web service interfaces HP presentation template user tutorial

16. How does it work? • Design time • From scratch (no model/implementation exists) • Create the model. Identify manageable resources, their attributes, operations, relationships and events. • Develop the WSDL of managed objects corresponding to manageable resources • Do the implementation using your favorite Web services platform • A model/implementation exists using a technology for which WSMF adapter does not exist • Create a WSMF adapter • A model/implementation exists using a technology for which WSMF adapter exists • Deploy the WSMF adapter HP presentation template user tutorial

17. How does it work? (Contd.) • Runtime • A WSMF compliant manager “discovers” an initial set of managed object WSDL URLs • It discovers more managed objects by accessing relationships of already discovered managed objects • It accesses these managed objects, their attributes and operations through the interface specified in their WSDLs • It subscribes for event notifications and receives them (either in pull or push mode) • It can perform the same operation on a collection of managed objects through the collection interface HP presentation template user tutorial

18. WSMF-WSM • WSMF-WSM is an application of WSMF-Foundation to providing manageability information with the effect that Web services can be managed by a management system. • WSMF-WSM can be further extended as required to support additional features of Web services • WSMF-WSM defines three managed objects: • Service • WSEE • Conversation HP presentation template user tutorial

19. WSMF-WSM ContainedIn WSEE1 ContainedIn ContainedIn WSEE2 ContainedIn Contains Contains Contains Contains DependsOn DependsOn Service1 Service2 Service3 Service4 DependedUpon DependedUpon Contains Contains ContainedIn ContainedIn ContainedIn CorrespondsTo Contains Contains ContainedIn Conv3 CorrespondsTo Conv5 Conv6 Contains Conv2 CorrespondsTo CorrespondsTo CorrespondsTo CorrespondsTo ContainedIn Contains ContainedIn Conv1 CorrespondsTo Conv4 CorrespondsTo HP presentation template user tutorial

20. Current Status • Has gone through multiple rounds of HP-internal and partner reviews • HP-internal and partner implementations exist • Defining a WSMF/CIM mapping • Working with GGF • We have reviewed the WSMF contribution with the Globus in a two day working session. • We are working with Globus to refactor WSMF Foundation and Events specifications to exploit OGSI to achieve a more powerful expression of a generalized web services framework for building management interfaces • We are looking to WSDM to build on these interfaces to incorporate the WSMF WSM + Foundation contributions towards management of web services using web services. HP presentation template user tutorial

21. Submission to WSDM TC Submission of WSMF to the WSDM TC Complies with OASIS IPR policies Not all parts of WSMF might be appropriate for the WSDM TC to tackle. HP is open to working with other groups (e.g. GGF) if better suited to use some parts of WSMF. HP will commit several of the WSMF authors to participate in WSDM for efficiency and to provide the benefit of lessons learned in creating WSMF. HP presentation template user tutorial

22. Call for action • WSMF is a modular and validated solution to • Events • MUWS • MOWS • The WSDM TC has the skills and variety of experience to improve it further. • Starting with a strong basis like WSMF is key to meeting our charter goals and schedule. And most importantly, meeting the needs of the industry. Call for participation First meeting NOW Final deliverable February 13, 2003 April 2, 2003 July 28, 2003 January 2004 HP presentation template user tutorial