1. High Level Component Definition and Architectural Relationships

2. Component API definitions

DCAE Component provides the following interfaces:

Interface Name	Interface Definition	Interface Capabilities	Protocol	Status	Consumed Models	API Spec (Swagger)
DCAE-EXT1	VES Collector	An interface to share FM/PM data for VNF FCAPS from the VNFs via the EMS Driver to VES Collector	REST	Available	VES	VES-Collector
DCAE-EXT2	HV-VES Collector	Interface to support GPB over TCP for highvolume VES Events	Proto/TCP	Available	VES	HV-VES (High Volume VES)
DCAE-EXT3	DataFileCollector	Supports bulk/batch datafile collection from xNF	sftp/ftpes	Available	3GPP	NA
DCAE-EXT4	SNMPTrap	Supports SNMP traps collection from SNMP agents deployed in the network	UDP	Available		NA
DCAE-EXT5	RESTConf	Subscribes to external controllers and retrieves data	restconf	Available		RESTConf
DCAE-EXT6	OnboardingAPI (MOD)	Used for onboarding MS component spec file and data-format into Design catalog	REST	Available (POC)		Onboarding HTTP API (MOD)
DCAE-EXT7	Deployment Handler	High-level API for deploying/undeploying composed DCAE services	REST	Available		Deployment-Handler
DCAE-EXT8	Inventory API	DCAE Inventory is a web service that provides the following: Real-time data on all DCAE services and their components Comprehensive details on available DCAE service types	REST	Available		Inventory API
DCAE-EXT9	Data Extraction Service (DES)	Provides basic computation and data retrieval/access from datastorage maintained by DL handlers (Feeder)	REST	New (Guilin)		des-swagger.json
DCAE-EXT10	DCAE Openloop/CL Event	Open loop and Control Loop event trigger from DCAE analytics/correlation MS into DMAAP	REST	Available		CL Event Structure
DCAE-EXT11	PNF Registration Handler	PNF Registration event published through DMAAP	REST	Available	VES	PRH (PNF Registration Handler)

DCAE Component consumes the following Interfaces:

Interface Name	Interface Definition	Interface Capabilities	Protocol	Status	Consumed Models	API Spec (Swagger)
POE-1	Policy update notification via DMAAP	Recieve updates to DCAE MS configuration policies via DMAAP (consumed by DCAE Policy Handler)	REST	Available	tosca.policies.root TOSCA
POE-5	PDP - Policy Handler	Fetched policies for DCAE MS from the Policy Framework via PDP query	REST	Available	Defined by policy	POE-5 (Policy Decision API)
AAIE-1	Topology Enrichment	Enrichment query by Correlation/analytics MS	REST	Available		AAI REST API Documentation on readthedocs.io
Acumos-E5 Subscription	Acumos - AA (MOD)	Acumos Adapter - Retrieves models from Acumos using E5 interface and onboard them into DCAE (MOD) using OnboardingAPI and make it available in Catalog	REST	Available (POC)

3. Component Description:

https://docs.onap.org/projects/onap-dcaegen2/en/latest/sections/architecture.html

4. Known system limitations

Architectural Technical Debt

Hardening MOD POC into mainstream component with redesigned catalog/UI and Policy/CLAMP integration

Runtime: None

DCAE Platform includes Cloudify which is used for Service Component orchestration. This will continue on Python 2.x as Python 3.x support for Cloudify is not available ( expected AUG'2020; will be evaluated once available and worked as stretch goal for Guilin)