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VNF Indicator Interface (Ve-Vnfm-em)

External VNFM can subscribe to SOL002 VNF Indicator notifications.

SOL002 Adapter reads VNF spesific specific VES events from DMaaP according to subscriptions and converts events to SOL002 interface format and sends as Notify events to external VNFM.

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1. SOL002Adapter will be the SO microservice component

2. SOL002Adapter will be registered in the Microservice Bus (via helm chart)
3. SOL002Adapter will be registered manually in the External System Register
4. SOL002Adapter on startup will use MSB ESR to get external VNFM data
5. SOL002Adapter on startup will register in VNFM for all LCM notifications
6. BPMN will trigger LCM operation which will go to SOL003Adapter
7. SOL003Adapter triggers the LCM flow in VNFM
8. ETSI LCM notification is sent from VNFM and goes to SOL002Adapter
9. SOL002Adapter will query A&AI to get VNF data
10. SOL002Adapter will construct and publish DMaaP ONAP event via DCAE/DMaaP. At the current phase it will be in proprietary format DMaaP event t but later on it will evolve to VES event.
11. Policy will consume DMaaP event
12. Policy will call configuration component to configure VNF

13. For the integration testing, the VNFM Simulator in the CSIT container will be used

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The following SOL002 operations will be supported:

/vnflcm/v1/subscriptions (LccnSubscriptionRequest)

/lcm/v1/vnf/instances/notifications (VnfLcmOperationOccurrenceNotification)

SOL002 Operation Sequence Flows

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Initially (for Frankfurt) SOL002_Adapter will be located in SO. Later on it has to be moved to other component (e.g. GNFC).

Development

The Ve-Vnfm-Adapter (SOL002Adapter) application is built using spring-boot with the web starter.

Subscription

Several times it tries to connect to AAI and get the list of resources with the type VNFM:

GET: https://aai.onap:8443/aai/v15/external-system/esr-vnfm-list

GET: https://aai.onap:8443/aai/v15/external-system/esr-vnfm-list/esr-vnfm/{name}?depth=1

Then the adapter connects to the URLs of all VNFMs in the list. It sends them its URL address and receives the subscription id.

Later, from time to time, it connects again to the VNFMs and checks if the subscription id is valid. 

When it stops to be valid, it tries to re-subscribe for this VNFM again.

Notification

Whenever a VNFM receives an LCM Action message, the VNFM sends the information to the URL of the Ve-Vnfm-Adapter application that had subscribed to this VNFM.

When a Ve-Vnfm-Adapter application receives the Notification it sends a message about it to the Policy through the DMaaP.

DMaaP Message Format

Below is a message (the values are sample) sent over to DMaaP.

{
  "closedLoopControlName": "ClosedLoopControlName",
  "closedLoopAlarmStart": 1589825445,
  "closedLoopEventClient": "microservice.stringmatcher",
  "closedLoopEventStatus": "ONSET",
  "requestID": "8478ff7d-409d-4b7d-b932-f09ab54765ab",
  "target_type": "VNF",
  "target": "generic-vnf.vnf-id",
  "AAI": {
    "vserver.is-closed-loop-disabled": false,
    "generic-vnf.vnf-id": "<etsiLcmEventId>"
  },
  "from": "ETSI",
  "version": "1.0.2",
  "etsiLcmEvent": {
    "id": "<etsiLcmEventId>",
    "notificationType": "VnfLcmOperationOccurrenceNotification",
    "subscriptionId": null,
    "timeStamp": null,
    "notificationStatus": "RESULT",
    "operationState": "COMPLETED",
    "vnfInstanceId": "2124DEPF",
    "operation": "INSTANTIATE",
    "isAutomaticInvocation": null,
    "vnfLcmOpOccId": "86d3de41-a7f7-48eb-9868-5b103dc36d26",
    "affectedVnfcs": [
      {
        "id": "abc123",
        "vduId": "vdu987",
        "changeType": "ADDED",
        "computeResource": {
          "vimConnectionId": "vim001"
        }
      }
    ],
    "affectedVirtualLinks": null,
    "affectedVirtualStorages": null,
    "changedInfo": null,
    "changedExtConnectivity": null,
    "error": null,
    "_links": {
      "vnfInstance": {
        "href": "https://so-vnfm-simulator.onap:9093/vnflcm/v1/vnf_instances/2124DEPF"
      },
      "subscription": null,
      "vnfLcmOpOcc": {
        "href": "https://so-vnfm-simulator.onap:9093/vnflcm/v1/vnf_lcm_op_occs/86d3de41-a7f7-48eb-9868-5b103dc36d26"
      }
    }
  }
}