Work in progress

Goal

Migrate PNF PNP workflow to Building Blocks (BBs/GR_API).
Include newly created BBs in Service-Macro-Create flow.
Leave legacy implementation using VNF_API intact.

By PNF PNP workflow we understand 2 BPMNs:

CreateAndActivatePnfResource
ConfigurePnfResource

Both included in CreateVcpeResCustService_simplified BPMN

JIRA

SO-2556 - Getting issue details... STATUS

SO-2785 - Getting issue details... STATUS

Involved parties

Lukasz Grech, Damian Nowak - PNF PNP workflow migration to BBs
Oskar Malm - ConfigurePnfResource.bpmn (previous, non-BB implementation)
Henry Xie - SO-CDS integration, new API for calling CDS from SO
Yuriy Malakov - CDS, SO-CDS integration
Rahul Tyagi - PNF SW upgrade, SO-CDS integration

Proposed building blocks

AssignPnfBB

Responsibility:
- Creates PNF entry in AAI (with PNF name chosen by user)
- Additionally stores PNF model-related parameters in AAI:
  - model-customization-id
  - model-invariant-id
  - model-version-id
- Makes a link in AAI between Service entry and PNF entry
- Sets PNF orchestration status in AAI to Assigned
Currently implemented in CreateAndActivatePnfResource.bpmn

WaitForPnfReadyBB

Responsibility:
- Waits for "PNF ready" event sent from PRH to DMaaP
  - pnfCorrelationId from the event must match PNF instance name provided by the user during service instantiation
- Sets PNF orchestration status in AAI to:
  - Register - when starting to wait for PNF ready event
  - Registered - when PNF ready event is successfully received
Currently implemented in CreateAndActivatePnfResource.bpmn

ControllerExecutionBB (action: configAssign)

SO-2646 - Getting issue details... STATUS

Responsibility:
- Runs config assign via CDS
Currently implemented in ConfigurePnfResource.bpmn
Things to consider:
- New approach to calling CDS/controllers - ControllerExecutionBB/actor in SDC model (Henry Xie, see https://wiki.onap.org/display/DW/SO+Weekly+Meeting+2019-12-4)
- SkipPostInstantiationConfiguration should be taken into account

ControllerExecutionBB (action: configDeploy)

SO-2647 - Getting issue details... STATUS

Responsibility:
- Runs config deploy via CDS
Currently implemented in ConfigurePnfResource.bpmn
Things to consider:
- New approach to calling CDS/controllers - ControllerExecutionBB/actor in SDC model (Henry Xie, see https://wiki.onap.org/display/DW/SO+Weekly+Meeting+2019-12-4)
- SkipPostInstantiationConfiguration should be taken into account

ActivatePnfBB

Responsibility:
- Sets PNF orchestration status in AAI as Active

Sequence in Service-Macro-Create flow

AssignServiceInstanceBB
CreateNetworkCollectionBB
AssignNetworkBB
AssignVnfBB
AssignVolumeGroupBB
AssignVfModuleBB
AssignPnfBB
WaitForPnfReadyBB
ControllerExecutionBB (action: configAssign)
ControllerExecutionBB (action: configDeploy)
ActivatePnfBB
ConfigAssignVnfBB
CreateNetworkBB
ActivateNetworkBB
CreateVolumeGroupBB
ActivateVolumeGroupBB
CreateVfModuleBB
ActivateVfModuleBB
ConfigDeployVnfBB
ActivateVnfBB
ActivateNetworkCollectionBB
ActivateServiceInstanceBB

SO - required changes

API handler

GR API

SO API currently doesn't allow to send PNF information in user data section.

Here's the proposed request which includes PNFs:

Click here to expand...

{
    "requestDetails":{
        "modelInfo":{
            "modelInvariantId":service_model_invariant_uuid,
            "modelVersionId":service_model_uuid,
            "modelName":service_model_name,
            "modelType":"service",
            "modelVersion":"1.0"
        },
        "owningEntity":{
            "owningEntityId":"3fa3e96c-dd51-4c77-818d-f130b613f1f8",
            "owningEntityName":"OE-Demonstration"
        },
        "subscriberInfo":{
            "globalSubscriberId":"Demonstration"
        },
        "requestInfo":{
            "instanceName":service_instance_name,
            "productFamilyId":"ff9262e1-5e31-48dc-aa71-e3f0a7ba1b8c",
            "source":"VID",
            "suppressRollback": False,
            "requestorId":"demo"
        },
        "requestParameters":{
            "subscriptionServiceType":"vFW",
            "aLaCarte": False,
            "userParams":[
                {
                    "service":{
                        "modelInfo":{
                            "modelVersionId":service_model_uuid,
                            "modelName":service_model_name,
                            "modelType":"service"
                        },
                        "instanceName":service_instance_name,
                        "instanceParams":[],
                        "resources":{
                            "pnfs":[
                                {
                                    "modelInfo":{
                                        "modelCustomizationName":nf_resource_name,
                                        "modelCustomizationId":nf_resource_uuid,
                                        "modelInvariantId":nf_model_invariant_uuid,
                                        "modelVersionId":nf_model_uuid,
                                        "modelName":nf_model_name,
                                        "modelType":"pnf",
                                        "modelVersion":"1.0"
                                    },
                                    "platform":{
                                        "platformName":"Platform-Demonstration"
                                    },
                                    "lineOfBusiness":{
                                        "lineOfBusinessName":"LOB-Demonstration"
                                    },
                                    "productFamilyId":"ff9262e1-5e31-48dc-aa71-e3f0a7ba1b8c",
                                    "instanceParams":[],
                                    "instanceName":nf_instance_name
                                }
                            ]
                        }
                    }
                },
                {
                    "Homing_Solution":"none"
                }
            ]
        }
    }
}

Building Block framework

Service decomposition (Retrieve BB Execution List)

PNFs should recognized in service model and proper BBs should be assigned for execution.

GeneralBuildingBlock initialization (BB Input Setup)

PNF resources should be properly initialized in GeneralBuildingBlock→ServiceInstance

PNF PNP workflow integration with CDS

VID - required changes

Updates for service macro instantiation:

"unlock" modern UI when for PNFs
allow to assign PNF instance name (will be used instead of pnfCorrelationId)
ensure that proper request is sent to SO

Other considerations

Are all required PNF parameters included in GeneralBuildingBlock->ServiceInstance→Pnf?
- Currently those are:
  - pnf-id
  - pnf-name
  - role
  - orchestration-status
  - cloud-region
- Currently AAI schema (aai_schema_v19.xsd) for PNF contains:
  - Fields: pnf-name, pnf-name2, selflink, pnf-name2-source, pnf-id, equip-type, equip-vendor, equip-model, management-option, orchestration-status, ipaddress-v4-oam, sw-version, in-maint, frame-id, serial-number, ipaddress-v4-loopback-0, ipaddress-v6-loopback-0, ipaddress-v4-aim, ipaddress-v6-aim, ipaddress-v6-oam, inv-status, resource-version, prov-status, nf-role, admin-status, operational-status, model-customization-id, model-invariant-id, model-version-id (from SO cataloge), pnf-ipv4-address, pnf-ipv6-address
  - Sub-structures: software-versions, relationship-list, p-interfaces, lag-interfaces, vrfs
- BBInputSetup implementation does not mention PNF at all - is it even initialized in GeneralBuildingBlock?
- PNF ip is resolved by CDS by PNF ID (it should be in AAI) - it's populated by PRH
How to include new BBs in Service-Macro-Create flow?
- Where to put new BBs in the flow sequence?
- Service decomposition in WorkflowActionBB may not unserstand PNFs (Retrieve BB Execution List)
- Service decompositioon should handle SkipPostInstantiationConfiguration
PNF orchestration status changes in AAI - which states should be assigned in which steps of the workflow
- Should we have ActivatePnfBB?
PNF SW upgrade (Oskar Malm)
- PNF should be active - PNP is finished
- new Upgrade flow will be created (BBs vs traditional considered)
5G NRM Configuration - plan for new BB which invokes configuration via CDS of NRM resource(?) (Yaoguang Wang, see https://wiki.onap.org/display/DW/SO+Weekly+Meeting+2019-12-4)
Make new BBs generic enough that they could be reused in other flows (request from Seshu)
Service-Macro-Delete
- Should we delete PNF resource from AAI on service deletion?
  - We plan to leave it. What orchestration status should it get? Inactive?

PNF PnP workflow migration to Building Blocks