Hi Flespi, I'm bringing data from a tracking unit into flespi and sending it to AWS. At the moment I'm sending to a MQTT endpoint but wish to send it rather to an AWS IOT device shadow endpoint. For this ,the JSON sent from flespi to the device shadow needs to be encapsulated in the following JSON { "state": { "reported": { } } if("undefined"!==typeof hljs)hljs._ha();else if("undefined"===typeof hljsLoading){hljsLoading=1;var a=document.getElementsByTagName("head")[0],e=document.createElement("link");e.type="text/css";e.rel="stylesheet";e.href="//cdnjs.cloudflare.com/ajax/libs/highlight.js/9.7.0/styles/default.min.css";a.appendChild(e);e=document.createElement("script");e.type="text/javascript";e.onload=function(){var d={},f=0;hljs._hb=function(b){b.removeAttribute("data-hljs");var c=b.innerHTML;c in d?b.innerHTML=d[c]:(7 I couldn't see how to do this, even with plugins. Please could you advise. Thanks Andy

Sending data to AWS IOT Device Shadow

AndyLeMay

Hi Flespi,
I'm bringing data from a tracking unit into flespi and sending it to AWS. At the moment I'm sending to a MQTT endpoint but wish to send it rather to an AWS IOT device shadow endpoint. For this ,the JSON sent from flespi to the device shadow needs to be encapsulated in the following JSON

{
  "state": {
    "reported": {
    
      }
}

I couldn't see how to do this, even with plugins. Please could you advise.

Thanks

Andy

adsa

Hello. AWS stream automatically publishes topic to update a shadow. The topic has format '$aws/things/{thing-name}/shadow/update' and payload format is '{"reported":{...}}'

AndyLeMay

Hi Adsa,
Thank you for your response. You'll see from the attached response from AWS that you also need the "state" element of the JSON. We have to put this into the JSON for devices connecting directly to AWS. Unless I am missing something?
Thanks Andy
!

adsa

AndyLeMay Oh, I see. You don't need to publish a shadow topic manually. Stream publishes it automatically. Just uncheck the mqtt_topic box. If mqtt_topic is set then stream publishes an extra message to this topic.

Stream publishes shadow with correct payload {"state":{"reported":{}}}, sorry for misleading you.

AndyLeMay

Hi Adsa,
Great, that is working. I also changed the "thing_name" to %device.name%.
Thank you very much for your help.
Andy

AndyLeMay

Hi Adsa,
Interestingly with removing the mqtt_topic the names of the JSON fields changed from its default Snake case to separation with ".". I'll just set it as Snake case and all is good.
thank you again.
Andy