1. A Semantic Registry for Cloud Services
Cristina Mîndruţă, Teodor-Florin Fortiş
West University of Timişoara

2. Context Major Cloud Computing Standards:
Context
Major Cloud Computing Standards:
NIST : service models, deployment models, cloud computing characteristics
OCCI : model of resources at IaaS level
CAMP – OASIS : model of resources at PaaS level
TOSCA – OASIS : model of IT service architecture and lifecycle management operations on it.
CIMI – DMTF : interface for management IaaS resources
ODCA : structure of service catalogues at cloud providers
CDMI : model for acces and management of storage resources
Cloud Semantic Frameworks
mOSAIC Project

3. Objectives Cloud Ontology Framework General structure Core definitions
Objectives
Cloud Ontology Framework
General structure
Core definitions
Extensibility mechanism
Basic functions
Registering cloud services
Semantic discovery
Properties-based service selection
Support for cloud services instantiation and management
Semantic registry

4. Use cases and requirements
Use cases and requirements
Service discovery and selection
Service registration
Support for the instantiation of services that require other services
Extend ontology with new types of cloud services
Support for essential cloud service characteristics

5. Core domain model Main concepts : CloudService and CloudRequest
Core domain model
Main concepts : CloudService and CloudRequest
CloudServiceType classified on two orthogonal criteria
Extensibility mechanism based on Property and PropertyValue

6. Ontology framework model
Ontology framework model
Core ontologies and template for service local ontology

7. Cloud Service Types – extension point
Cloud Service Types – extension point
Details for Network cloud service type
CloudServiceType instances

8. Cloud service WSMO definition
Cloud service WSMO definition
webService ServiceName
importsOntology {CS_Core, Local ontology}
capability ...
precondition ...
definedBy … and canProvide(...).
assumption ...
definedBy … and isAquired(...).
interface(s) ...
ontology Local ontology
importsOntology {CS_Core}
instance(s) ...
axiom canProvideDef
definedBy ...
Two parts:
WSMO WebService
Local WSMO ontology
Required services – specified in assumption block of capability section

9. Cloud service example : WSMO service definition
Cloud service example : WSMO service definition
Assumption on the existence of
required cloud service
Precondition
– matching criteria

10. Cloud service example : local WSMO ontology
Cloud service example : local WSMO ontology
Axiom :canProvideDef

11. Conclusion and future work
Conclusion and future work
Framework for a semantic registry of cloud services
Core ontological definitions
Extension mechanism
Relevant for:
Cloud interoperability
Cloud service discovery and composition
Support software services (responsible with finding and selecting cloud services)
Marketing advantages of cloud providers
Future work:
Better and actual alignment to the considered standards
Mapping tools for registration with standard service catalogues
Integration with a CloudML engine

12.
Thank you