Information Technology Reference
In-Depth Information
Service client
User's interface for service requirements
SLABasedService
SLA Manager
Monitoring &
archiving
Specification &
negotiation
Validation &
creation
Violation &
adaptation
Service provider's interface for SLA management
Service manager
FIGURE 10.2
SLA Manager and its core SLA-based service.
instance, the service owner needs to create its service model, upload the
model instance to a service access point (SAP), and register the service.
The SAP is a service end-point that provides a standard interface for man-
aging the service and supporting the interaction between services [7]. In a
distributed service-oriented architecture, the SAP serves as a proxy for
service clients to access the services.
In SSP, once a SAP receives the service model instance from the
service owner, it creates a service instance with an entity reference and
Shared services platform
(2) SAP creates the service
instance and generates the entity
reference of the service instance
(3) Register the service on Naming
Service and Dictionary service
Service
client
Service
owner
(2)
(5)
(1)
(4) Client queries
NS & DS to get the
entity reference of
the service
(5) SLA negotiation
starts
Service access point
(1) Create service
model and send to
an SAP to publish
the service
(3)
Naming service (NS) &
Dictionary service (DS)
(4)
SLA
proposal
instance
Service
instance
(2)
SLA
instance
SLA
Te m p l a t e
Instance
FIGURE 10.3
SLA management model creation over the shared services platform.
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