How to use Sub and GetAtt functions at the same time in CloudFormation template?

Question

I create CloudFormation yaml template and I need to use !GetAtt \"TestLambda.Arn\" as part of !Sub function in \"AWS::ApiGateway::Method\" Integrat

Answer 1

We can use Fn:: for the nested intrinsic functions if using the ! short form first. So

!Sub "arn:aws:apigateway:us-east-1:lambda:path/2015-03-31/functions/$(Fn::GetAtt:[TestLambda, Arn])/invocations"