DCAE R4 - M3 Architecture Review

DRAFT  - as of 3/1 

1. Project Overview

   DCAE platform includes components collectively fulfilling the role of Data Collection, Analytics, and Events generation for ONAP. The architecture of DCAE targets flexible, plugable, micros-service oriented, model based component deployment and service composition.

   DCAE also support multi-site collection and analytics operations which are essential for large ONAP deployments. DCAE components generally fall into two categories: DCAE Platform Components and DCAE Services Components.

   DCAE Platform refers the set of controller components which manages the deployment and LCM of the DCAE service components which include all the collectors, analytics and event processor MS. 

    

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

   Following new components introduced for Dublin

   Collectors

             RESTConf collector            

   Event Processors

             VES/Universal Mapper 
             3gpp PM-Mapper  
             BBS Event processor          

             DL Handlers – Feeder and Admin (POC)

   Analytics/RCA
            SON-Handler (former PCI-Handler)
            Heartbeat (STRETCH GOAL) 
            TCA-Gen2 (STRETCH GOAL)

   Platform Enhancements

   • Support helm chart deployment in DCAE-C using custom helm plugin*
   • DCAE Healthcheck enhancement
   • Dynamic AAF based topic provisioning (STRETCH GOAL)
   • Multisite K8S cluster deployment support (STRETCH GOAL)
     
    

3. New or modified interfaces

   

   
   

4. Interface naming

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

   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://onap.readthedocs.io/en/latest/submodules/dcaegen2.git/docs/sections/apis/dcaecdap.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

   
   

   New R4 APIs to be added into RTD  - SON-Handler, RESTConf

   DCAE R4 M1 Release Planning#APIOutgoingDependencies 

5. 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.
   Cloudify is 3rd party product; multi-site feature on community version will be available later in 2019; will be incorporated for E release

6. Involved use cases, architectural capabilities or functional requirements

   • Usecases

   5G Use Case (Dublin)
           5G - Bulk PM 
           5G - OOF and PCI
   BBS Broadband Service Use Case (Dublin)
   CCVPN (E-LAN Service (EP-LAN, EVP-LAN) *, https://wiki.onap.org/pages/viewpage.action?pageId=45296665
   Model Driven Control Loop Requirements

• DL POC
  
  

7. 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.