CDK v2 - Go: Cannot use Fn If in allowed by Cloudformation way

[xrn]

I have code like

	lambdaFn := awslambda.NewFunction(stack, jsii.String("Singleton"), &awslambda.FunctionProps{
		Code:    awslambda.NewAssetCode(jsii.String("lambda"), nil),
		Handler: jsii.String("handler.main"),
		Timeout: awscdk.Duration_Seconds(jsii.Number(300)),
		Runtime: awslambda.Runtime_PYTHON_3_6(),
	})

	awscognito.NewUserPool(stack, aws.String("UserPoll"), &awscognito.UserPoolProps{
		UserPoolName: awscdk.Fn_Sub(aws.String("${Environment}-SC-Pool"), nil),
		LambdaTriggers: awscdk.Fn_ConditionIf("Condition",
			&awscognito.UserPoolTriggers{
				PostAuthentication: lambdaFn,
			},
			&awscognito.UserPoolTriggers{},
		),
	})

Which from perspective Cloudfroamtion should work - I can create if statement for the whole object. But Fn_ConditionIf returns type ICfnConditionExpression and I am expecting &awscognito.UserPoolTriggers

Reproduction Steps

Code attached

What did you expect to happen?

If statement should be allowed

What actually happened?

If statement could not be used here because of type

Environment

• **aws-cdk@2.0.0-alpha.12
• **OS: MP Debian 5.10.28-1 (2021-04-09) x86_64 GNU/Linux
• Language (Version): Go 1.16.3

[nija-at]

Hi @xrn -

You will need to convert ICfnConditionExpression into an any token. Something like this -

LambdaTriggers: awscdk.Token_asAny(awscdk.Fn_ConditionIf("Condition",
  &awscognito.UserPoolTriggers{
    PostAuthentication: lambdaFn,
  },
  &awscognito.UserPoolTriggers{},
)),

Can you check if that works?

[xrn]

Hi @nija-at, thanks for answer

LambdaTriggers: awscdk.Token_AsAny(awscdk.Fn_ConditionIf(aws.String("Condition"),
			&awscognito.UserPoolTriggers{
				PostAuthentication: lambdaFn,
			},
			&awscognito.UserPoolTriggers{},
		)),

Still do not work because Token_AsAny returns IResolvable and LambdaTriggers is expecting awscognito.UserPoolTriggers type

[nija-at]

I believe this is a Go question targeted to the jsii repo.
I believe you already have an issue open there - aws/jsii#2798

Closing this as a dupe.

[github-actions]

⚠️COMMENT VISIBILITY WARNING⚠️

Comments on closed issues are hard for our team to see.
If you need more assistance, please either tag a team member or open a new issue that references this one.
If you wish to keep having a conversation with other community members under this issue feel free to do so.