DCAE R6 - M3 Architecture Review

1. Project Overview

DCAE project provides intelligence for ONAP to support automation (via open-loop and CL) by performing network data collections, analytics & correlation and trigger actionable rootcause events.

DCAE components are classified between platform and service components.  DCAE Platform refers to the set of controller components which manages deployment and LCM of DCAE service components. The DCAE services components includes all the microservices - collectors, analytics and event processor which supports active data-flows and processing as required by ONAP usecases.

The architecture of DCAE targets flexible, micros-service oriented, model based component design and deployment. DCAE also offers support for multi-site collection and analytics operations which are essential for large ONAP deployments. 

2. New component capabilities for Frankfurt, i.e. the functional enhancements

Following new components introduced for Frankfurt

Event Processors

• DCAEGEN2-1849 DL Handlers integration (DL-Admin, DL-Feeder)  (cont of DataLake POC)

Analytics/RCA

• DCAEGEN2-1820  PM-Subscription Handler
• DCAEGEN2-1907  TCA-Gen2 (STRETCH GOAL)

Platform Enhancements

• DCAEGEN2-1852  DCAE MOD (mod/genprocessor, mod/runtimeapi, mod/distributorapi, mod/onboardingapi , mod/webui - NiFI)
• DCAEGEN2-1893 Acumos-ONAP DCAE adapter (POC)
• DCAEGEN2-1908 OTI (Phase1) - EventProcessor, Event-Handler

3. New or modified interfaces

Architecture diagram - DCAE R6 M1 Release Planning#Highlevelarchitecturediagram

New External interfaces

• MOD (Onboarding API to AcumosAdapter)
• Policy Handler (via DMaaP)
• PM-Subscription Handler (via DMaaP)
• TCA-gen2 (via DMaaP)

Modified interfaces

• VES Collector (security)
• InventoryAPI (MOD Flow support for CLAMP)

If they are modified, are the backwards compatible?

• VESCollector - Yes
• InventoryAPI - Yes

4. Interface naming

https://lf-onap.atlassian.net/wiki/display/DW/DCAE+R4+M1+Release+Planning#DCAER4M1ReleasePlanning-APIIncomingDependencies

5. Reference to the interfaces

Existing platform API's - https://onap.readthedocs.io/en/latest/submodules/dcaegen2.git/docs/sections/offeredapis.html

https://onap.readthedocs.io/en/latest/submodules/dcaegen2.git/docs/sections/apis/deployment-handler.html

https://onap.readthedocs.io/en/latest/submodules/dcaegen2.git/docs/sections/apis/inventory.html

https://git.onap.org/dcaegen2/services/prh/tree/swagger.yaml

https://git.onap.org/dcaegen2/collectors/ves/tree/swagger_vescollector_1.3.1.yaml

https://git.onap.org/dcaegen2/platform/configbinding/tree/app/app/swagger.yaml

https://git.onap.org/dcaegen2/collectors/restconf/tree/swagger_restconfcollector_1.0.0.yaml

MOD Onboarding API - swagger-onboardingAPI.json

DCAE R6 M1 Release Planning#APIOutgoingDependencies

6. What are the system limits

Relies on k8s for loadbalancing and scaling. DCAE platform handles the control flow and do not carry the data/event; DCAE service components can be scaled and support state management through external DB and/or K8S state management.
Cloudify is 3rd party product; multi-site feature on community version will be available later in 2020; will be incorporated for G release.

7. Involved use cases, architectural capabilities or functional requirements

• Usecases
  • Self Serve Control Loops v2
  • Policy Update Notifications
  • 5G / OOF SON Enhancement
  • 5G / Bulk PM / PM Control
  • 5G / Bulk PM / Secure Communication between xNFs and ONAP
  • PNF / Plug and Play

8. Platform Maturity Targets

DCAE R6 M1 Release Planning#PlatformMaturity.1

In-addition, following SECCOM activities are being worked for Frankfurt

• Outstanding OJSI Jira (OJSI Tickets Status)
• Java 11 Upgrade (DCAEGEN2-1918) (stretch goal)
• Python 2.x EOL migration support (DCAEGEN2-1519)
• Following additional TSC MUST have requirement will also be worked in this release.
  • Document current upgrade component strategy
  • SECCOM Perform Software Composition Analysis - Vulnerability tables
  • SECCOM Password removal from OOM HELM charts
    • No DCAE impacts identified; will handle new charts contribution for MOD to align with Security needs.

  • SECCOM HTTPS communication vs. HTTP

    config-binding-service	30415
    dashboard	30418

  • DCAEGEN2-1972 - Password removal from HELM charts (EPIC)

    • DCAEGEN2-1973  DCAE Helm chart updates for password removal 

    • DCAEGEN2-1974  Bootstrap pod updates for sourcing password 

    • DCAEGEN2-1975  Cloudify pod updates for sourcing password   

    • DCAEGEN2-1976  Policy-Handler updates for sourcing password

    • DCAEGEN2-1977  InventoryAPI updates for sourcing password 

    • DCAEGEN2-1978  ServiceChangeHandler updates for sourcing password 

9. Listing of new or impacted models used by the project (for information only)

Support for new policy model as required by Model driven control loop requirement.