What is AWSIOTDataPlaneBuilder?

Question

Hi repost community,

I'm looking to populate AWS IOT core device shadow in a lambda function. I'm looking to use Device Shadow REST API.
After looking around, it looks like I need to add "Authorization" header myself.  Then I looked into [documentation](https://docs.aws.amazon.com/general/latest/gr/signing_aws_api_requests.html) which suggested me to look into AWS SDK.
Finally I found [AWSIOTDataPlaneBuilder](https://sdk.amazonaws.com/java/api/latest/software/amazon/awssdk/services/iotdataplane/IotDataPlaneClientBuilder.html) which does have a bunch of shadow methods I need. But there's no documentations or example for this.

1. So what is AWSIOTDataPlaneBuilder? Is this supposed to be used?
2. if not, is any example for REST API calling to device shadow(from cloud with auth header)? All I found is MQTT examples.

Accepted Answer

Hi,

when using a Lambda function to update the thing shadow you need to add permission to the Lambda execution role to update the thing shadow: `"Action": "iot:UpdateThingShadow"`.

When you use an AWS SDK to interact with the thing shadow you don't need to add an authorization header. You call the *UpdateThingShadow* API with the language of your choice. Assuming you are using Java because you mention *AWSIOTDataPlaneBuilder* the UpdateShadow method is documented at .

AWS IoT Core provides a control plane and a data plane. The control plane is used to create/update/delete your IoT resources like things, policies, rules, etc. The data plane is used for data in your case sending data to the thing shadow.

Cheers,

Philipp

What is AWSIOTDataPlaneBuilder?

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