Hi Architecture sub-com,

(Apologies, resending to correct email address for arc sub-comm list).

Referring to AAI meeting notes: 
https://wiki.onap.org/display/DW/2018-07-25+AAI+Weekly+Meeting+Notes
And Figure 5 and 6 from 
https://wiki.onap.org/display/DW/AAI-CCVPN+Schema+Proposal+for+Casablanca+Release

The CCVPN use case involves two separate ONAP domains (e.g. one for CMCC and 
the other for VDF), with the end-to-end service connecting the two networks 
together (see Figure 5 from link above).

In the middle of this service, we propose to represent the inter-network 
connection as "logical-link" object between two "p-interface" objects.

In this use case, however, one "p-interface" object is in the CMCC ONAP domain 
and the other "p-interface" object is in the VDF ONAP domain. The 
"logical-link" object needs to span both ONAP domains.

Questions:

- Is there an existing/preferred architectural pattern or design pattern for 
how to record this situation in AAI?

- Is there a protocol for federating the AAI data from two different ONAP 
domains? The AAI meeting briefly discussed how the new "enricher" component 
should work in Casablanca.


We have made a tentative proposal shown in Figure 6 from the link above, 
whereby:

- a "foreign-object" is recorded in AAI for each ONAP domain, e.g. to represent 
the other "p-interface"
- some "ESR info" is attached to the "foreign-object" pointing to the other 
ONAP domain as the "source of truth" for that object
- the "foreign-object" may cache some of the properties sourced from the other 
ONAP domain
- both ONAP domains have AAI data pointing to each other in mirror-image fashion

We are seeking review comments and guidance on how best to proceed with 
recording this cross-domain data into AAI in both ONAP domains.


Thanks,
Keong



Customer Experience and Platform Integration R&D Dept
--
Keong Lim, Huawei Technologies Co. Ltd ([email protected])
Ground Floor, Suite 1, 5 Lakeside Drive, BURWOOD EAST VIC 3151 AUSTRALIA
--
  "If ye love wealth better than liberty, the tranquillity of servitude than the
   animating contest of freedom-go from us in peace. We ask not your counsels
   or arms. Crouch down and lick the hands which feed you. May your chains sit
   lightly upon you, and may posterity forget that ye were our countrymen!"
    - Samuel Adams



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