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Integrating Grid & Web Services: Proposals & Technologies Overview

Explore Web services specification proposals and innovative technologies, such as WS-Resource framework and WS-Notification, to integrate stateful components and enhance message-based communication. Learn about WS-Resource model, properties, lifetime, and notification characteristics.

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Integrating Grid & Web Services: Proposals & Technologies Overview

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  1. Bringing Grid & Web Services Together Globus World San Francisco, CA Tuesday, January 20th, 2004 Dr. Daniel Sabbah Vice President of Strategy & Technology IBM Software Group

  2. WS-Resource Properties WS-Resource Lifetime WS-Notification Modeling Stateful Resources with Web Services WS-Base Faults WS-Service Group WS-RenewableReferences What we are announcing today • A family of Web services specification proposals • Introduces a design pattern to specify how to use Web services to access “stateful” components • Introduce message based publish-subscribe to Web services

  3. How these proposals relates to other Web services standards: Service Composition BPEL4WS WS-Notification WS-Service Group Quality of Experience (QoX) WS-Reliable Messaging WS-Transaction WS-Security WS-Resource Lifetime Description WS-Base Faults WS-Resource Properties WSDL XSD WS-Policy WS-Metadata Exchange Messaging SOAP XML WS-Addressing WS-Renewable References Transports JMS RMI / IIOP SMTP HTTP/HTTPS

  4. The WS-Resource framework model • What is a WS-Resource • Examples of WS-Resources: • Physical entities (e.g.. processor, communication link, disk drive) or Logical construct (e.g.. agreement, running task, subscription) • Real or virtual • Static (long-lived, pre-existing) orDynamic (created and destroyed as needed) • Simple (one), or Compound (collection) • Unique - Has a distinguishable identity and lifetime • Stateful - Maintains a specific state that can be materialized using XML • May be accessed through one or more Web Services resource

  5. The WS-Resource framework model • WS-Resource Properties • Resource state and metadata “Projected” as an XML document • Query and Set operations • WS-Resource LifeTime • Explicit destruction or “Soft state” time-to-live • Provides for cleanupof resource instances resource <ProcessorProperties> <ProcID>5A34C1DE03</ProcID> <ProcArchitecture>Power6.2</ProcArchitecture> <ProcSpeedMIPS>400</ProcSpeed> <ProcCacheMB>256<ProcCache> <ProcRunning>1</ProcRunning> </ProcessorProperties>

  6. WS-Notification • Characteristics of WS-Notification: • Web services integration of traditional enterprise publish/subscribe messaging patterns • Composes with other Web services technologies • Facilitates integration between different messaging middleware environments • Standardizes the role of Brokers, Publishers, Subscribers and Consumers • Provides two forms of publish/subscribe: direct publishing and brokered publishing • Standardizes Web service message exchanges for publishing, subscribing and notification delivery • Defines XML model of Topics and TopicSpaces to categorize and organize notification messsages

  7. Local processor manager is “front-ended” with A Web service interface J J Other kinds of processors are also “modeled” as same type of WS-Resources Grid Scheduler J Cluster Mainframe Blades Notification R R R R R R R R R WS-Resource framework & WS-Notification Scenario: Grid Resource Management & Scheduling Grid Scheduleris a Web Service Grid “Jobs” and “tasks” are also modeled using WS-Resources and Resource Properties WS-Resource used to “model” physical processor resources WS-Notification can be used to “inform” the scheduler when processor utilization changes WS-Resource Properties “project” processor status (like utilization)

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