Send MQTT messages from AWS Lambda to my IOT Device

Question

I am using AWS LAMBDA triggered by AWS IOT. My IOT device is publishing the message and will trigger AWS Lambda. After analyzing the message I need to send the analyzed data back to the IOT device. My IOT device has subscribe to the topic and waiting for my message to receive.

Point here is I need to send the analyzed data from my lambda function using MQTT protocol.

I have used boto3 to send the data:

client = boto3.client('iot-data')
    
response = client.publish(
    topic='test/topic1',
    #note:
    qos=0,
    payload=eventText
)

But the above code sends the data using HTTP which I don't want. I need to use MQTT protocol to send the data. Is it possible to send it? if yes, what is the other method?

Also, my second doubt is.. even if data is sent using HTTP, it is received by my IoT device waiting to receive a message over MQTT protocol. Is it meant like HTTP is converted to MQTT? but who did it?

I have already gone through the How can I publish to a MQTT topic in a Amazon AWS Lambda function? but all used boto3 which uses HTTP.

Thank you in advance.

Even I am having the same doubt. – Pradip Shenolkar Aug 16 '21 at 04:14 — Pradip Shenolkar, Aug 16 '21 at 04:14

score 1 · Answer 1 · answered Aug 17 '21 at 07:11

1

We can use Amazon MQ Service in Amazon lambda and deal with the MQTT messages.

answered Aug 17 '21 at 07:11

PkjT

41
4

Ok will try that. – Pradip Shenolkar Aug 17 '21 at 09:42
Here is a documentation Link:- https://boto3.amazonaws.com/v1/documentation/api/latest/reference/services/mq.html – DRPandya Dec 16 '22 at 11:40

Send MQTT messages from AWS Lambda to my IOT Device

1 Answers1