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Draft

This following is a working draft, and the contents can be changed as needed. The ETSI-based hierarchical orchestration is a concept, and it is not committed for the Frankfurt Guilin release. 

Architecture

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Requirements

NFVO Microservice Plugin Framework

• Provides the NFVO function Microservice plugin framework for supporting:
  • 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
    • 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 - 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

SOL005 NBI (API Handler)

• Provides SOL005-compliant Restful Northbound APIs for SO/SOL005 Adapter
  • 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}”)
    • Scale NS (POST “/api/nslcm/v1/ns_instances/{nsInstanceId}/scale”) – stretch goal
    • Heal NS (“POST ”/api/nslcm/v1/ns_instances/{nsInstanceId}/heal”) – stretch goal
    • 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%20jobs/job/NFV%20-%20Network%20Functions%20Virtualisation/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

NS Workflows

• 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 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 

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ETSI Package Onboarding for NFVO

• ONAP NFVO leverages the ETSI Catalog Manager as the run-time Catalog Database service provider.
  • ETSI NS/VNF/PNF Packages are onboarded and distributed from SDC à ETSI Catalog Manager (note: this is NOT part of NFVO; it is a separate effort)
  • ONAP NFVO queries ETSI NS/VNF/PNF Packages from the ETSI Catalog Manager

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NS LCM Database 

TBD

SOL003 Adapter for SVNFMs

• Provides SOL003-compliant (Or-Vnfm) Southbound APIs towards SVNFMs
  • Supports VNF Lifecycle Management (LCM)
    • Create VNF
    • Instantiate VNF
    • Terminate VNF
    • Delete VNF
    • Scale VNF
    • Heal VNF
    • Query VNF
    • ModifyInfo VNF
    • Subscription
    • Notification
    • Granting with HPA
  • It is a Microservice and part of ONAP SO NFVO
  • It is launched by NS Workflows for VNF LCM
  • It locates the VNFM instance by leveraging AAI ESR

Resource Manager

• Provides Resource Granting Information through OOF (Policy, MultiCloud, A&AI)
  • 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)
  • Software Image Management

  • 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
    
    

Notification Manager

TBD

FM/PM Manager

TBD

ONAP SO, SOL005 Adapter and NFVO Interaction

<Existing SO Business Logic for VFC/SOL005 Adapter>

• ONAP SO leverages the existing E2E service instance management logic
• SO receives Create E2E Service Instance Request
• SO runs E2E Service BPMNs
  • Decomposes E2E service requests for network resources
  • Checks resource subcategory is “Network Service”
  • Invokes Create Network Service Request through SOL005 Adapter
• SOL005 Adapter fetches NFVO endpoint details from AAI ESR
  • Collects NFVO endpoint details from AAI ESR
  • Sends SOL005 Create NS request to NFVO

</Existing SO Business Logic for VFC/SOL005 Adapter>

<New NFVO Path>

• NFVO performs NS LCM
  • Returns NS ID
• SOL005 Adapter sends SOL005 Instantiate NS Request to NFVO

</New NFVO Path>

ONAP SO Refactoring for NFVO Function Extraction

Communication Security

• ONAP SO NFVO NBI supports HTTPs and Authentication/Authorization towards SO/SOL005 Adapter.
• ONAP SO NFVO SBI (through SOL003 Adapter) supports HTTPs and Authentication/Authorization towards SVNFMs.
• TBD

Standard Interfaces

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