AWS IoT规则DynamoDB

Question

I have created a rule in AWS IoT.

This rule is very simple: AWS IoT receive a message from MQTT device and storage it in a DynamoDB table.

The problem is that the system receive without problem the message but after that the rule does not sent it to DynamoDB.

This is my topic

This is my rule

This is what I can see in CloudWatch (not sure if this is about the same problem)

what could be wrong?

Thanks!

Answer 1

The solution is to publish the message in JSON format from Mosquitto:

  mosquitto_pub --cafile rootCA.pem --cert certificate.pem.crt --key private.pem.key -h XXXXX.iot.eu-west-2.amazonaws.com -p 8883 -q 1 -d -t topic -m {\"message\":\"3\"}

where message have to be the name of the primary key

Answer 2

使用自定义主题时，必须在策略中对其进行更新，请单击“编辑策略文档”，然后在资源下添加主题和主题过滤器。