Hi Alok,

We reviewed the VES specification you shared after the presentation in DCAE 
weekly meeting couple of weeks back.  We understand that currently VES supports 
a REST based interface with JSON payload to push telemetry data and events from 
the VNF to DCAE VES collector. For telemetry control an HTTP response channel 
is being used as per the test code link you published in the presentation.

Just wondering if GPB is considered as one of potential options for VES.  You 
have noted the use of Avro as one potential option as future enhancement. 
Wondering if GPB is also a potential option you are considering. Some of the 
advantages we see for GPB are.
•       Uses binary formatting during serialization, which densily packs the 
payload (which is good for PM/telemetry data)
•       Faster than the VES proposed JSON payload (which is good for events and 
alarms)
•       Can define the structure (schema) of events/telemetry data in a 
protocol definition file (.proto) which is similar to the JSON schema that is 
available in OPNFV VES project
•       Availability of code generators in multiple programming languages for 
encoding and decoding - Can generate code in C#, C++,  Java, Python, Go . 
Options in other languages available as well.

While we have noted the dynamic schema capabilities in Avro, one key advantage 
we see with GPB is the serialization code generation in multiple languages 
without limiting to the C language based library which is currently available 
and open source tool sets available for GPB. Moreover many network vendors and 
open source monitoring solutions (e.g. Prometheus, 
link<https://prometheus.io/docs/instrumenting/exposition_formats/>)   support 
GPB already. We would be glad to share more information on the potential GPB 
usage if required.

Regards

Manoj
[https://www.netcracker.com/assets/img/netcracker-social-final.png] ƕ



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