10.3. Open Grid Service Architecture (OSGA)
OGSA draws on the same infrastructure as used in Web services: XML, SOAP, WSDL, and WSIL. However, there are some important conceptual and practical extensions that arise from the need to address a dynamic grid environment providing mechanisms to create and discover customized service instances with controlled, fault-resilient, and secure management of distributed atomic or collective services, often with a long-lived state.
Four important concepts in OGSA are:
Naming: Each grid service instance is globally, uniquely, and for all time named by a Grid Service Handle (GSH).
Factories: Create new grid service instances and maintain a group of service data elements that can be queried. Factories play the ...
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