ULID in MQTT message

Depending how you wish to process the payload, the ULID can be added as an additional key/value to the message (assuming JSON). For instance, the message payload could like this:

{
  "MyData": {
    "foo": 1,
    "bar": 2,
  },
  "ULID": "01GMB8RKEBSHA1081ZGTTRBD6B"
}

And the you can programmatically process the ULID by a subscriber, or inline via the Rules Engine if passing off to Lambda for instance.

AWS IoT Core does not have any features to introspect data, like for putting it into a CloudWatch Log entry. You would need to understand the message payload and use the ULID within your business logic.

Please let me know if you have any follow-ups!

Hi Gavin_A,

I want to use ULID as one of the element in the MQTT message.

I am using MQTT 3.11 for client connection.