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Re: [hono-dev] Hono-Kura integration

Hi Matteo,

 

Only general feedback (without having been at yesterday’s meeting):

 

Yes, your assumptions are correct.

 

With one remark: for telemetry messages at the MQTT adapter we have no <topic-suffix>, just “t/tenant/device” for unauthenticated devices,

and “t” with specifying the device and tenant during the authentication for authenticated devices.

 

So, you publish telemetry messages to “t” with a payload then, and rather put the “asset1” inside the payload.

 

But maybe you had new discussions yesterday, and introduced a concept “topic-suffix”? I just refer to the current concept in Hono.

 

Best regards,

Karsten




From: hono-dev-bounces@xxxxxxxxxxx <hono-dev-bounces@xxxxxxxxxxx> On Behalf Of Maiero, Matteo
Sent: Mittwoch, 13. Juni 2018 15:01
To: hono-dev@xxxxxxxxxxx
Subject: [hono-dev] Hono-Kura integration

 

Hello,

Following yesterday’s discussion we continued the integration process in Kura’s enh_cloudPublishers branch [1].

 

From my understanding of yesterday’s discussion, there can be two topic structures differentiated if the device is not authenticated (condition only usable for testing purposes) or authenticated.

For telemetry messages, for example, the supported non authenticated topic is in the following form:

t/tenant/device/<topic-suffix>

So, for the DEFAULT_TENANT, device 4711 and topic suffix asset1, the resulting topic at which Kura can publish is:

t/DEFAULT_TENANT/4711/asset1

For an authenticated device, the topic should be shortened, omitting the tenant-id and device-id fields.

Referring to the example described above, the topic for an authenticated device would then be:

t/asset1

 

Are my assumptions correct?

 

Best regards,

Matteo

 

[1] https://github.com/eclipse/kura/tree/enh_cloudPublishers

-- 

Matteo Maiero
Senior Software Engineer

direct: +39 0433 485 902


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