Create CloudFormation stack without resources

Question

I am using Terraform for most of my infrastructure, but at the same time I'm using the serverless framework to define some Lambda functions. Serverless uses CloudFormation under the hood where I need access to some ARNs for resources created by Terraform.

My idea was to create a CloudFormation stack in Terraform and export all of the value that I need, but it complains that it cannot create a stack without any resources. I don't want to define any resources in CloudFormation, only the outputs, so I though maybe there is a way to define some dummy resource, but I couldn't find any.

Is there a way to work around this issue? If not, I'm also open to other suggestions for getting parameters passed from Terraform to CloudFormation.

Answer 1

You can use AWS::CloudFormation::WaitConditionHandle for this. Example:

Resources:
  NullResource:
    Type: AWS::CloudFormation::WaitConditionHandle