How to trigger a specific AWS Lambda version from AWS Dynamodb Streams

Question

I have a dynamodb table that triggers a lambda function by enabling the Dynamodb streams. This was setup from the Dynamodb console. I would however like to be able to point the trigger to a specific version/alias of the lambda function. Most other AWS services allow you to specify the lambda ARN where you can tag on the version or alias at the end like arn:aws:lambda:::function::<version/alias> However when adding a trigger to the dynamodb table , it only allows you to select the lambda function name from a list and there seems to be no way to use a version/alias. There also does not seem to be a CLI/api command to do the same. Has anyone had any success doing this?

Answer 1

As I know the way that might be useful for you as well, Which is as follows.

• Open AWS Console, Search the DynamoDB service, and open it.
• Click your table and click on the triggers option.
• Then you can see the lambda's which are linked with the stream. Click on the lambda you wanna change the version/alias. Then click on the edit/test trigger button.
• You will redirect to the Lambda service page and where you can deploy your specific version of the lambda. Then stream will call that specific version of lambda.

Short Way:

• Open AWS Console, Search lambda service, and open your lambda/function who is trigger with the stream.
• Deploy the specific version as you need.

Hope that might be helpful for you!

Answer 2

We can attach a different trigger to each alias we have for a Lambda function. In order to do this, we just have to go Lambda console, select our function, and create a new alias.

After the alias is created, we will have the option to attach new triggers:

On this page we just have press + Add trigger button and we will have to search for DynamoDB. After we select DynamoDB, we are prompted to select our table for which we have the stream: