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Support for ETSI NFV NFVO  Orchestrator in ONAP SO (ONAP SO ETSI-Aligned Hierarchical Orchestration)

Executive Summary - Enable E2E workflows by orchestrating ETSI NFV compliant Network Services and VNFs. This NFVO should provide an ETSI NFV SOL005 v2.7.1 NBI which can onboard ETSI NFV SOL004 and ETSI NFV  SOL007 v2.7.1 compliant packages which then can be Life Cycle Managed and monitored. This NFVO should use an ETSI SOL003 v2.7.1 SBI to invoke an external VNF Manager. 

Business Impact - Enables operators and service providers to use Industry standard Orchestration to deploy, manage and monitor network services. Industry compatibility.

Business Markets - All operators and service providers that are developing ETSI compatible Network Services especially for 5G Slicing where each Slice Subnet is associated with a Network Service 

Funding/Financial Impacts - Reduction in operations expense from using industry standard ETSI Orchestration.

Organization Mgmt, Sales Strategies -There is no additional organizational management or sales strategies for this requirement outside of a service providers "normal" ONAP deployment and its attendant organizational resources from a service provider. 

• Default function plugins support (following default plugins will be registered to the Framework; routing will be configured)
  • SOL005 NBI (API Handler)
  • NS LCM Manager
  • ETSI Catalog Manager Adapter
  • Camunda Workflow Engine
  • NS Workflows and Logic
  • Resource Manager
  • SOL003 Adapter
  • K8S Client
  • Configuration Manager
  • MultiCloud Adapter
  • Inventory DB Adapter
  • Notification Manager
  • FM/PM Event Manager
• Substitution of existing function plugins
  
  • Registration of a new substitution Microservice with version control (leverage a mechanism like AAI ESR/MSR/API Fabric/MSB/Kubernetes - TBD)
  • Plug-in a substitution Microservice
  • Dynamic dispatching/launching a new plugin instance based on configuration/policy
• Extension of existing function plugins
  
  • Default function plugin extension with version control
  • Dynamic dispatching/launching an extended plugin instance based on configuration/policy

• Supports NS Lifecycle Management (LCM) APIs
  • Create NS  (POST “/api/nslcm/v1/ns_instances”)
  •  Instantiate NS (POST “/api/nslcm/v1/ns_instances/{nsInstanceId}/instantiate”)
  • Terminate NS (“/api/nslcm/v1/ns_instances/{nsInstanceId}/terminate”)
  • Delete NS (DELETE “/api/nslcm/v1/ns_instances/{nsInstanceId}”)
  • Get Operation Status ( GET / api/nslcm/v1/ns_lcm_op_occs, 
  • / api/nslcm/v1/ns_lcm_op_occs
  • Scale NS (POST “/api/nslcm/v1/ns_instances/{nsInstanceId}/scale”) – (P2)
  • Heal NS (“POST ”/api/nslcm/v1/ns_instances/{nsInstanceId}/heal”) – (P2)
  • Query NS (GET “/api/nslcm/v1/ns_instances”, “/api/nslcm/v1/ns_instances/{nsInstanceId}”)
  • Subscription (POST ”/subscriptions”)
  • Notification (SO SOL005 Adapter client-provided; POST notification based on the callbackUrl from the subscription) 
• Support NS Fault Management API (stretch goal)

• Support NS Performance Management APIs (stretch goal)

• Leverages SOL005 Swagger Files
  • https://forge.etsi.org/jenkins/view/All+jobs/job/NFV+-+Network+Functions+Virtualisation/job/sol005-master/lastSuccessfulBuild/artifact/build/
  • Provides interfaces with DCAE and Policy for Close Loop Automation
  • This API Handler focuses on the SOL005 APIs, and its business logic is supplied by the NS LCM Microservice

• Supports Create NS: POST /api/nslcm/v1/ns_instances (CreateNsRequest)
• Responses with NsInstance with 201 (for success) or an error
• Sends NsIdentifierCreationNotification to the NFVO subscriber(s) (e.g., ONAP SO SOL005 Adapter)
• Postcondition: NS Instance is NOT_INSTANTIATED state

• Precondition: NS instance is NOT_INSTNANTIATED state
• Supports Instantiate NS: POST /api/nslcm/v1/ns_instances/{nsInstanceId}/instantiate (InstantiateNsRequest)
• Responses 202 Accepted with an empty payload body
  • a Location HTTP header that points to the new individual NS Lifecycle Operation Occurrence resource; i.e. the URI of that resource (.../ns_lcm_op_occs/{nsLcmOpOccId}
• Sends nsLcmOperationOccurrenceNotifiation (start, result)
• Postcondition: NS Instance is INSTANTIATED state
• Error handling: if the operation is failed, error information is provided in the notification message

• Precondition: NS instance is INSTANTIATED state
• Support Terminate NS: POST /api/nslcm/v1/ns_instances/{nsInstanceId}/terminate (TerminateNsRequest)
• Responses 202 Accepted with an empty payload body
  • a Location HTTP header that points to the new individual NS Lifecycle Operation Occurrence resource; i.e. the URI of that resource (.../ns_lcm_op_occs/{nsLcmOpOccId}
• Sends nsLcmOperationOccurrenceNotifiation with nsLcmOpOccId, notificationStatus (start, result), subscriptionId, etc. 
• Postcondition: NS Instance is TERMINATED state
• Error handling: if the operation is failed, error information is provided in the notification message

• Precondition: NS instance in NOT_INSTANTIATED state
• Supports Delete NS: DELETE /api/nslcm/v1/ns_instances/{nsInstanceId}
• Sends 204 No Content with an empty payload body
• Sends NsIdentifierDeletionNotification to the NFVO subscriber(s) (e.g., ONAP SO SOL005 Adapter)
• Postcondition: the resource representing the NS instance has been removed from the list of NS instance resources
• Error handling: if the individual NS instance is not in NOT_INSTANTIATED state, it rejects the deletion request

• Support multiple NS LCM operation occurrences: GET / api/nslcm/v1/ns_lcm_op_occs
  • Response with 200 OK (NsLcmOpOcc[])
• Support individual NS LCM operation occurrence: GET /api/nslcm/v1/ns_lcm_op_occs/{nsLcmOpOccId}
  • nsLcmOpOccId is an attribute in the NsLcmOperationOccurrenceNotification
  • Response with 200 OK (NsLcmOpOcc), where its opeationStatus=PROCESSING, COMPLETED)

Note: Instantiate NS and Terminate NS use the individual NS LCM operation occurrence

• Supports subscription: POST /api/nslcm/v1/subscriptions (LccnSubscriptionRequest)
• Tests the callback notification endpoint
  • GET <<callback uri>>
  • expects 204 No Content response from the subscriber (e.g., SO SOL005 Adapter)
• Responses with 201 Created (LccnSubscription)

• Supports Get all subscriptions: GET /api/nslcm/v1/subscriptions/
  • Responses with 200 OK (LccnSubscription[])
• Supports Get individual subscription: GET /api/nslcm/v1/subscriptions/{subscriptionId}
  • Responses with 200 OK (LccnSubscription)

• Supports Delete subscription: DELETE /api/nslcm/v1/subscriptions/{subscriptionId}
  • Responses with 204 No Content

• Sends notifications to the subscriber(s) for NS LCM: POST <<callback URI>> (<<Notification>>)
  • <<Notification>> follows NsLcmOperationOccurrenceNotification, NsIdentifierCreationNotification, NsIdentifierDeletionNotification or NsChangeNotification (see, SOL005 v2.7.1 specification 6.5.2.5 - 6.5.2.8)
• Gets response: 204 No Content from the subscriber (e.g, SO SOL005 Adapter)

Support for NS LCM and Workflows (P1)

• Provides Workflow engines (stand-along/clustered Camunda engine) for the NS workflow management
  • Supports Stand-Alone/clustered Camunda engine(s) deployment

  • Allows hot deployment of custom workflow packages  while ONAP NFVO is running

• Provides NS LCM and workflows
  • Provides default NS workflows (part of ONAP NFVO deployment)
    • CreateNS bpmn files with business logic
    • InstantiateNS bpmn files with business logic
    • TerminateNS bpmn files with business logic
    • DeleteNS bpmn files with business logic 
  • Allows custom NS workflows deployment (Hot deployment)
  • The Operators build their own workflows and business logic as war files
  • The Operators drop off custom workflows war files into the Camunda deployment directory
  • UI for the custom workflow war deployment would be supported 
  • Provides business logic for NS LCM
  • Invokes SOL003 Adapter
  • Invokes Resource Adapter
  • Invokes Catalog DB Adapter
  • Invokes NS Inventory Adapter
  • Invokes MultiCloud Adapter 
  • Invokes Configuration Manager 
  • Invokes Policy Adapter
  • Invokes OOF Adapter
  • Invokes Notification Manager (TBD)
  • Invokes FM/PM Event Manager (TBD)
  • Invoke K8S Client (TBD)

• Provides Resource Granting Information through OOF (Policy, MultiCloud, A&AI) (P1)
  • Supports interfaces with OOF to collect Granting information

  • Collects Homing information from OOF and provides the information to other NFVO components

• Supports Or-Vi Interfaces that provided by VIM, Infrastructure Manager, VIM or CaaS manager (note: for Guilin, many of them would be stretch goals) (P1 Partial)
  • Software Image Management (P1)

  • Container Image Management (stretch goal)

  • Virtualized Resources Information Management

  • Virtualized Resources Capacity Management

  • Virtualized Resources Management

  • Virtualized Resources Change Management

  • Virtualized Resources Reservation Management

  • Virtualized Resource Quota Management

  • Virtualized Resource Performance Management

  • Virtualized Resource Fault Management

  • Network Forwarding Path (NFP) Management

• Provides access for ETSI Catalog Manager
• Get notifications from ETSI Catalog Manager

• Provides access for AAI for NS LCM
• Refactoring of the current AAI Adapter

• Provides MultiCloud Access
• Refactoring of the current SO MultiCloud Adapter

• Provides APPC and or CDS access
• Refactoring of the current APPC and CDS connection

• Provides Policy access
• Refactoring of the current Policy access

• Provides OOF access for homing
• Refactoring of the current OOF access
• Need to discuss further

• Provides notifications to SO E2E
• depends on the SOL003 notification endpoint

• Provides access to DCAE

• Provides access to K8S
• When we support CNF, it will be done, not for Guilin

SOL005 Adapter supports interfaces to/from ONAP SO NFVO

• SOL005 Adapter sends SOL005 requests to the ONAP SO NFVO, as one of the choices (SO NFVO, VFC, External NFVO)
• SOL005 Adapter subscribes (CREATE and DELETE) to ONAP SO NFVO for notifications
• SOL005 Adapter provides notification endpoint(s) to receive notifications (P1)
• Swagger will be provided to the SOL005 Adapter development