Page Status: Copied from R6 - Mar, 22, 2020

Component Status: Pending PTL Updates and ArchCom Review

SDC High Level Component Definition and Architectural Relationships 

2. SDC Component Description:

SDC is the Centralized ONAP Design Time Platform

• SDC Provides Service Provider a seamless design time user experience
  • Allow SP to configure for its design environment including user roles and design workflows
  • Import generic ONAP management functions (MS, Flows, Policies) from ONAP developed software and SP’s adaptations (1) (2)
  • Onboard & Design resource level network functions (VNF, PNF) (3)
  • Compose Service models with resources (4)
  • Design Service Provider specific Management Flows and Policies for the Resource or Service Model (5)
• SDC integrates multi design tools into one platform
  • Provide ONAP development a “Pluggable framework” for easy design tools integration
• SDC Provides a common Catalog for designed objects
  • Support robust catalog cataloging capabilities for storage and management of ONAP standard compliant data models
• Provide linkage & management of SP’s Test/validation process & artifacts for certification of the designed models (6)
• Distributes models to runtime for execution (7)

 3 SDC Target Functional Architecture

SDC provides 3 functionally distinct layers with modular software, integrated with internal APIs

4. SDC Current Release API definitions

SDC provides the following interfaces:

Note:   xxxI interface is a SDC internal interface.  xxxxE interface is a SDCE external interface

The current API documents can be found at:

• https://onap.readthedocs.io/en/latest/submodules/sdc.git/docs/consumedapis.html
• https://onap.readthedocs.io/en/latest/submodules/sdc.git/docs/offeredapis.html

SDC consumes the following interfaces:

5. Dublin Functional View

The SDC dublin view is:

6 SDC Architecture Evolution (optional item)

The goals of the SDC evolution are:

• Seamless Design Time user experience based on user’s roles and design workflow
• Pluggable Framework to integrate multiple external developed design tools into SDC
• One consolidated Design Catalog with common models in SDC to drive ONAP runtime

7 SDC Overall ONAP Architecture Principle Compliance

8 The SDC near term focus on architecture deficincies are (optional):

User experience:

• Workflow Congfigurator to define service provide specific design workflow
• Workflow guided, role-based user experience
• Function-based (rather than tool based) GUI

Application Layer for Tool Plug-ins

• Provide Plug-in Framework for design tools
• Support standard-based VNF package onboarding tool plug-ins
• Provide Data Mapping/Translation/Enrichment to ONAP Standard Internal Model
• Provide tools to support Service Provider's test & validation environment/process for model certification
• Nert term tasks: Integrate Policy Designer, CLAMP designer, CDS

Catalogue & Data Management

• Support common data model as defined by the modelling team
• Model Data Lifecycle Management
• Runtime Distribution Version Management

9 SDC - Current System Deployment Architecture

User Experience layer (Frontend Jetty Server)

• supplies the static content of web pages, and all resources that required by the GUI
• serves as a proxy for the REST API requests coming from the GUI
• Every request originating from the GUI is passed to the Jetty front-end server before it is executed.

Application Layer (Backend Jetty Server)

• Containers all the application logic for the SDC.

Catalog/Data Management Layer

• Elastic Search is used to index the auditing data received from different operations in the SDC.
• This information can then be analyzed with Kibana. The Kibana server enables statistical analysis of the operations done, according to the business logic.
• Cassandra is used to store audit data, artifacts and data model objects.