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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 ServiceDescriptor is used to model the design time representation of a service.
Nested Service Design is supported by the association "ServiceComprisedOf", as a ServiceCatalogItem can as a ServiceDescriptor can be composed of other ServiceCatalogItemServiceDescriptor(s).
Complicated Service Design is supported by the association "ServiceComposedOf", as a ServiceCatalogItem can ServiceDescriptor can be composed of at least 1 or more ServiceComponentCatalogItemServiceComponentDescriptor(s).
- Hybrid Service Design is also supported, as a part of a ServiceCatalogItem ServiceDescriptor can be composed of ServiceComponentCatalogItemServiceComponenDescriptor(s) and part of it can be composed of other ServiceCatalogItemServiceDescriptor(s).
- ServcieComponentItem ServcieComponentDescriptor is used to model the design time represenation representation of a service component or network service.
Nested Service Component Design is supported by the association "ServiceComponentComprisedOf", as a ServiceComponentCatalogItem can as a ServiceComponentDescriptor can be composed of other ServiceComponentCatalogItemServiceComponentDescriptor(s).
Complicated Service Component Design is supported by the association "ServiceComponentComposedOf", as a ServiceComponentCatalogItem ServiceComponentDescriptor can be composed of at least 1 or more ResourceCatalogItemResourceDescriptor(s).
Hybrid Service Component Design is also supported, as a part of a ServiceComponenetCatalogItem ServiceComponenetDescriptor can be composed of ServiceComponentCatalogItemServiceComponentDescriptor(s) and part of it can be composed of other ResourceCatalogItemResourceDescriptor(s).
ResourceCatalogItem ResourceDescriptor is used to model the design time representation of a resource.
Cross reference in resource design is supported via the association "ResourceCatalogReferencesResourceReferences".
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 ServiceCatalogItemServiceDescriptor. In particular,
- Based on 1 ServiceCatalogItemServiceDescriptor, 0 or more ServiceInstance(s) can be instantiated, which also instantiate the association "ServiceCatalogItemMadeAvailableAsServiceDescriptorMadeAvailableAs". A ServiceInstance can comprise other ServiceInstance(s) or ServiceComponentInstance(s), as modeled by the associations "ServiceComprisedOf" and "ServiceComposedOf".
- Based on 1 ServiceComponentCatalogItemServiceComponentDescriptor, 0 or more ServiceComponentInstance(s) can be instantiated, which also instantiate the association "ServiceComponentCatalogItemMadeAvailableAsServiceComponentDescriptorMadeAvailableAs". A ServiceComponentInstance can comprise other ServiceComponentInstance(s) or ResourceInstance(s), as modeled by the associations "ServiceComponentComprisedOf" and "ServiceComponentComposedOf".
- Based on 1 ResourceCatalogItemResourceDescriptor, 0 or more ResourceInstance(s) can be instantiated, which also instantiates the association "ResourceCatalogItemMadeAvailableAsResourceDescriptorMadeAvailableAs". A ResourceInstance can reference other ResourceInstance(s).
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- Products are made up of services (ServiceCatalogItems on ServiceDescriptor 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.
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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 (ServiceCatalogItem) (Note from Chesla:
A&AI has a model/model-ver concept which captures the descriptor from ASDC. The model vertex type contains the model-invariant-id and the model-type (e.g., service or resource). The model-ver vertex type contains the model-version-id, the model-version, the model-name, and a model-description.
In short, A&AI split the invariant part of the model away from the version-dependent pieces. In this manner, you can relate ALL versions of a model to something by using the model-invariant-id (e.g., get me all the resources for this model) or you can relate a specific version of a model (e.g., get me all resources for this version of the model) by using the model-version-id in combination with the model-invariant-id. Recall that A&AI stores the model/model-ver elements as "JOIN" keys to the SDC descriptor world. A&AI does not try to capture all the details of the models.
It's not clear whether you can equate model-name to service-name or model-description to service-description. The model-name really names the MODEL, not necessarily the service. The same applies to the service-description.
ALSO NOTE as referenced on a prior wiki page: The A&AI service vertex type is deprecated and should not be used in ONAP.)
ServiceDescriptor
| R2+ Attributes | Description | Producer | Consumer | SDC(Service) | AAI( |
| model+model-ver) | ECOMP IM(ServiceCatalogItem) |
| InvariantUUID | Constant identifier of the service model | SDC | SDC/SO/UUI/VID | invariantUUID | model.model-invariant-id for that service model |
| UUID | Versioned identifier of the service model (this uuid is changed for every major version of the service) | SDC | SDC/SO/UUI/VID | UUID |
model-ver.model-version-id for that service model | ServiceUUID |
| name | The name of the service model designed | SDC | SDC/SO/UUI/VID | name | model-ver.model-name for that service model | ServiceDisplayName |
| description | The description of the service model designed | SDC | SDC/SO/UUI/VID |
| description | 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 | SDC | SDC/SO/UUI/VID | Category | n/a | Category |
| version | The service model version | SDC | SDC/SO/UUI/VID |
service-version
model-ver.model-version for that service model | Version | |||||
| serviceType | An optional string field defining a generic type (like category) of the service. E.g. this field can be used for defining the service as “TRANSPORT”. | SDC | SDC/SO/UUI/VID | serviceType | ||
| serviceRole | An optional string field for shortcode that defines the function that the service is providing. E.g. “MISVPN” or “AIM”. | SDC | SDC/SO/UUI/VID | serviceRole | ||
| icon | The icon path of the service | SDC | SDC/SO/UUI/VID | n/a | Icon | |
| serviceComponentUUID | The service component descriptor UUIDs that the service includes (relationhip to Service Component) | SDC | SDC/SO/UUI/VID |
ServiceInstance
| R2+ Attributes | Description | Producer | Consumer | AAI(ServiceInstance) | |||
| serviceInstanceIdservice-Instance-Id | Uniquely identifies this instance of a service | SO | AAI/UUI/VID/SO/Policy/Holmes | service-Instance-Id | |||
| serviceInstanceNameservice-instance-name | The name assigned to the service-instance | UUI/VID/SO | AAI/UUI/VID/SO | service-instance-nameserviceInvariantUUID | |||
| service-instance-descprtion | The description assigned to the service-instance | UUI/VID/SO | AAI/UUI/VID/SO | service-instance-descprtion | |||
| model-invariant-uuid | Constant identifier of the service model (relationship to service model) | SDC/SO | AAI/UUI/VID/SO | model-invariant-id model-invariant-id + model-version-id ServiceUUID(model-uuid) stand for the relationships with the descriptor and persona-mode-version (model-version) is an attribute of the description. | |||
| model-uuid | Versioned identifier of the service model (relationship to service model) | SDC/SO | AAI/UUI/VID/SO | model-version-id model-invariant-id + model-version-id | ServiceVersion(model-uuid) stand for the relationships with the descriptor and persona-mode-version (model-version) is an attribute of the description. | ||
| model-version | The service model version in SDC catalog | SDC/SO | AAI/UUI/VID/SO | persona-Model-Version model-invariant-id + model-version-id (model-uuid) stand for the relationships with the descriptor and persona-mode-version (model-version) is an attribute of service model?)the description. | |||
| service-type | An optional string field defining a generic type (like category) of the service. E.g. this field can be used for defining the service as “TRANSPORT”. | SDC/SO | AAI/UUI/VID/SOpersona-Model-Version | service-type service-type and service-role should be in the descriptor and not the instance (at the info modeling level). | |||
| service-role | An optional string field for shortcode that defines the function that the service is providing. E.g. “MISVPN” or “AIM”. | SDC/SO | AAI/UUI/VID/SO | service-role service-type and service-role should be in the descriptor and not the instance (at the info modeling level). | |||
| selfLink | URL to endpoint where more details can be gotten | SO | AAI/UUI/VID/SO | selflinkorchestrationStatus | |||
| orchestration-status | Orchestration status of the service instance | SO | AAI/UUI/VID/SO/Policy/Holmes | orchestration-statusserviceComponentInstanceId | |||
| service-component-Instance-Id | The service component instance ID that the service instance includes | VFC/... | AAI/UUI/VID/SO/Policy/Holmes | Relationship to nested ServiceInstances | type | role | function |
ServiceComponentCatalogItem
ServiceComponentDescriptor
| R2+ Attributes | Description | Producer | Consumer | SDC(Service) | ECOMP (ServiceComponent) | ETSIIFA014 (NetworkService) |
| invariantUUID | Constant identifier of the Service Component model | SDC | SDC/UUI/VFC | invariantUUID | nsdInvariantId | |
| UUID | Versioned identifier of the Service Component model (this uuid is changed for every major version of the service component) | SDC | SDC/UUI/VFC | UUID | ServiceComponent CatalogItem | nsdIdentifier |
| name | The name of the service component | SDC | SDC/UUI/VFC | name | nsdName | |
| description | The description of service component | SDC | SDC/UUI/VFC | description | ||
| version | The version of service component | SDC | SDC/UUI/VFC | version | ||
| designer | The designer of service component | SDC | SDC/UUI/VFC | designer |
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| R2+ Attributes | Description | Producer | Consumer | ETSI IFA014(NetworkService) |
| vnfdid | References the VNFD of a constituent VNF. | SDC | SDC/UUI/VFC | vnfdid |
| pnfdId | References the PNFD of a constituent PNF. | SDC | SDC/UUI/VFC | pnfdId |
| virtualLinkDesc | Provides the constituent VLDs. | SDC | SDC/UUI/VFC | virtualLinkDesc |
ServiceComponentInstance
| R2+ Attributes | Descripion | Producer | Consumer | AAI |
ETSI IFA013(NS) | |||
| instanceId | Uniquely identifies this instance of a service component | SO/VFC | AAI/UUI/VFC/Policy/Holmes |
| nsInstanceId |
| name | The name assigned to the service component instance | UUI/VFC | AAI/UUI/VFC/Policy/Holmes | nsName |
| model- |
| invariant-uuid | Constant identifier of the service component model | SDC/VFC | AAI/UUI/VFC | nsdId | |
| model- |
| uuid | Versioned identifier of the service component model (this uuid is changed for every major version of the service component) | SDC/VFC | AAI/UUI/VFC | ||
| model- |
| version | The service version in SDC catalog | VFC | AAI/UUI/VFC |
| selfLink | URL to endpoint where more details can be gotten | VFC | AAI/UUI/VFC |
| orchestration-status | Orchestration status of the service component instance | VFC | AAI/UUI/VFC/Policy/Holmes |
| nsState | |||||
| description | The description of service component instance | VFC | AAI/UUI/VFC | description |
Network Service Instance
Inherit from ServiceComponentInstance
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