Re: [iot-wg-integration] Notes from last week's integration meeting

[Marc Pellmann <pellmann@xxxxxxxxx>]

Hi Stefano,

While checking the documentation for Hono Command&Control [1], I noticed a couple of things that I wanted to ask you.

In the paragraph "Command & Control over MQTT Adapter" you say that requests are sent to:

- control/[tenant]/[device-id]/req/<req-id>/<command>

while responses are received from:

- control/[tenant]/[device-id]/res/<req-id>/<status>

In the picture however the <command> and the <request-id> are swapped. I suppose the first one is the right one, is that correct ? If so, then it matches the proposal no.2 at page five of the Toulouse document, which is fine.

Regarding the <command>, is that a single token or can it be a sequence of tokens ? The second would be easier to manage for us (and for Kura) since Kura commands are can be something like "CONF-V1/GET/configurations". Do you plan to have some well-known piece of information after the <command> in the future ?

It is right the way, you have written is. I explicitly put the command at the end, following our discussions in Toulouse. I also decided to define the property-bag at the end of the topic, which could be used for future additions. So the idea is, that we do not care about additions to the topic, at the moment. 

But it's true that there could be something in the future that we would like to add to the topic structure. 

Marc