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This page is used for the deposition of clean version ONAP R2+ Servcie IM.

Class Diagram

Based on the input from ECOMP Service IM input, ONAP R2+ Service IM is designed as below class diagram:


  • In this diagram, both design time and run time service related objects are depicted.

  • For the design time section on the left side,

    • ServiceCatalogItem is used to model the design time representation of a service. 

      • Nested Service Design is supported by the association "ServiceComprisedOf", as a ServiceCatalogItem can be composed of other ServiceCatalogItem(s).

      • Complicated Service Design is supported by the association "ServiceComposedOf", as a ServiceCatalogItem can be composed of  at least 1 or more ServiceComponentCatalogItem(s).

      • Hybrid Service Design is also supported, as a part of a ServiceCatalogItem can be composed of ServiceComponentCatalogItem(s) and part of it can be composed of other ServiceCatalogItem(s).
    • ServcieComponentItem is used to model the design time represenation of a service component or network service.
      • Nested Service Component Design is supported by the association "ServiceComponentComprisedOf", as a ServiceComponentCatalogItem can be composed of other ServiceComponentCatalogItem(s).

      • Complicated Service Component Design is supported by the association "ServiceComponentComposedOf", as a ServiceComponentCatalogItem can be composed of  at least 1 or more ResourceCatalogItem(s).

      • Hybrid Service Component Design is also supported, as a part of a ServiceComponenetCatalogItem can be composed of ServiceComponentCatalogItem(s) and part of it can be composed of other ResourceCatalogItem(s).

    • ResourceCatalogItem is used to model the design time representation of a resource.

      • Cross reference in resource design is supported via the association "ResourceCatalogReferences".

  • For the run time section on the right side, similiar layering from top to bottom of instance items and relationship between is modeled, as the result of the model-driven instantiation process from a given ServiceCatalogItem. In particular,

    • Based on 1 ServiceCatalogItem, 0 or more ServiceInstance(s) can be instantiated, which also instantiate the association "ServiceCatalogItemMadeAvailableAs". A ServiceInstance can comprise other ServiceInstance(s) or ServiceComponentInstance(s), as modeled by the associations "ServiceComprisedOf" and "ServiceComposedOf".
    • Based on 1 ServiceComponentCatalogItem, 0 or more ServiceComponentInstance(s) can be instantiated, which also instantiate the association "ServiceComponentCatalogItemMadeAvailableAs". A ServiceComponentInstance can comprise other ServiceComponentInstance(s) or ResourceInstance(s), as modeled by the associations "ServiceComponentComprisedOf" and "ServiceComponentComposedOf".
    • Based on 1 ResourceCatalogItem, 0 or more ResourceInstance(s) can be instantiated, which also instantiates the association "ResourceCatalogItemMadeAvailableAs". A ResourceInstance can reference other ResourceInstance(s).

Use Case Example

From the very high level, in summary,

  • Products are made up of services (ServiceCatalogItems on the design side, ServiceInstances on the runtime side).
  • Services are made up of service components. A service component is not seen or known to products like SID ResourceFacingServices are not seen by products. Services can be composed of other Services and may be referred to as complex services. Network Service, or WAN service are as the service components in the service.
  • ServiceComponents are made up of ServiceComponents or resources.  The resources include VNF, PNF, VL, etc.

VoLTE

Take the ONAP R1 VoLTE use case as an example.  The E2E VoLTE service can be designed as the service; The IMS, EPC, and WAN can be designed as the service components.  The HSS, CSCF, TAS, SBC, MME, and SPGW etc, and the link between them can be design as the resources.




Attributes

  • ServiceDesc

R2+ AttributesDescriptionProducerConsumer

SDC(Service)

AAI(model+model-ver)ECOMP IM(ServiceCatalogItem)
serviceInvariantUUIDConstant identifier of the service modelSDCSDC/SO/UUI/VIDinvariantUUIDmodel.model-invariant-id for that service model
serviceUUID

Versioned identifier of the service model (this uuid is changed for every major version of the service)

SDCSDC/SO/UUI/VIDUUID

model-ver.model-version-id for that service model

ServiceUUID 
serviceName 

The name of the service model designed

SDCSDC/SO/UUI/VIDnamemodel-ver.model-name for that service model
ServiceDisplayName 
serviceDescription

The description of the service model designed

SDCSDC/SO/UUI/VIDdescription

model-ver.model-description for that service model

ServiceDescription 
category

A predefined list which identifies the construct's category. There is a predefined list of service categories

SDCSDC/SO/UUI/VIDCategoryn/aCategory  
serviceVersionThe service model versionSDCSDC/SO/UUI/VID

model-ver.model-version for that service model

Version 
icon

The icon path of the service

SDCSDC/SO/UUI/VID
n/aIcon 
serviceComponentUUIDThe service component descriptor UUIDs that the service includes (relationhip to Service Component)SDCSDC/SO/UUI/VID



  • ServiceInstance

R2+ Attributes
DescriptionProducerConsumerAAI(ServiceInstance)
serviceInstanceIdUniquely identifies this instance of a serviceSOAAI/UUI/VID/SO/Policy/Holmesservice-Instance-Id
serviceInstanceNameThe name assigned to the service-instanceUUI/VID/SOAAI/UUI/VID/SOservice-instance-name
serviceInvariantUUIDConstant identifier of the service model (relationship to service model)SDC/SOAAI/UUI/VID/SOmodel-invariant-id
ServiceUUIDVersioned identifier of the service model (relationship to service model)SDC/SOAAI/UUI/VID/SOmodel-version-id
ServiceVersionThe service model version in SDC catalogSDC/SOAAI/UUI/VID/SOpersona-Model-Version
selfLinkURL to endpoint where more details can be gottenSOAAI/UUI/VID/SOselflink
orchestrationStatusOrchestration status of the service instanceSOAAI/UUI/VID/SO/Policy/Holmesorchestration-status
serviceComponentInstanceIdThe service component instance ID that the service instance includesVFC/...AAI/UUI/VID/SO/Policy/HolmesRelationship to nested ServiceInstances


  • ServiceComponentCatalogItem

R2+ AttributesDescriptionProducerConsumerSDC(Service)

ECOMP

(ServiceComponent)

ETSIIFA014

(NetworkService)

invariantUUIDConstant identifier of the Service Component modelSDCSDC/UUI/VFCinvariantUUID
nsdInvariantId
UUIDVersioned identifier of the Service Component model (this uuid is changed for every major version of the service component)SDCSDC/UUI/VFCUUID

ServiceComponent

CatalogItem

nsdIdentifier
nameThe name of the service componentSDCSDC/UUI/VFCname
nsdName
descriptionThe description of service componentSDCSDC/UUI/VFCdescription

versionThe version of service componentSDCSDC/UUI/VFC

version
designerThe designer of service componentSDCSDC/UUI/VFC

designer


  • Network Service Descriptor

    Inherit from ServiceComponentCatalogItem

R2+ AttributesDescriptionProducerConsumerETSI IFA014(NetworkService)
vnfdid

References the VNFD of a constituent VNF.

SDCSDC/UUI/VFCvnfdid
pnfdId

References the PNFD of a constituent PNF.

SDCSDC/UUI/VFCpnfdId
virtualLinkDescProvides the constituent VLDs.SDCSDC/UUI/VFCvirtualLinkDesc



  • ServiceComponentInstance


R2+ AttributesDescripionProducerConsumerAAI(ServiceInstance)

ETSI IFA013(NS)

instanceIdUniquely identifies this instance of a service componentSO/VFCAAI/UUI/VFC/Policy/Holmesservice-Instance-IdnsInstanceId
instanceNameThe name assigned to the service component instanceUUI/VFCAAI/UUI/VFC/Policy/Holmesservice-instance-namensName
invariantUUIDConstant identifier of the service component modelSDC/VFCAAI/UUI/VFCmodel-invariant-idnsdId
UUIDVersioned identifier of the service component model (this uuid is changed for every major version of the service component)SDC/VFCAAI/UUI/VFCmodel-version-id
versionThe service version in SDC catalogVFCAAI/UUI/VFCpersona-Model-Version
selfLinkURL to endpoint where more details can be gottenVFCAAI/UUI/VFCselflink
statusOrchestration status of the service component instanceVFCAAI/UUI/VFC/Policy/Holmesorchestration-statusnsState
descriptionThe description of service component instanceVFCAAI/UUI/VFC
description


    • Network Service Instance

Inherit from ServiceComponentInstance


R2+ AttributesDescriptionProducerConsumer

ETSI IFA013(NS)

vnfInfoIdReference to information on constituent VNFs of this NS.VFCAAI/UUI/VFCvnfInfoId
pnfInfo

Information on the PNF(s) that are part of this NS.

VFCAAI/UUI/VFCpnfInfo
virtualLinkInfo

Information on the VLs of thisNS.

VFCAAI/UUI/VFCvirtualLinkInfo



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