I'm making one main stack and two nested stack. The first nested stack is a stack which creates Lambda. And the second nested stack creates Apigateway.
When making the Apigateway I send some Lambda outputs to the Apigateway template. But some Lambda Outputs don't get created in some conditions.
So when I use Fn::GetAttr
to send some outputs to the Apigateway template. I get an error because the output doesn't exist.
[Lambda Template (Nested Stack)]
Because of the condition conditionNeedMock
the MockServerArn output wasn't created.
...
Outputs:
MockServerArn:
Condition: conditionNeedMock
Description: lambdaMock function Arn
Value: !GetAttr lambdaMock.Arn
...
[Main Template]
LambdaStack.Ouputs.MockserverArn
wasn't created so I get an error when using !GetAttr
.
...
Resources:
LambdaStack:
Type: AWS::CloudFormation::Stack
...
ApiGatewayStack:
Type: AWS::CloudFormation::Stack
DependsOn: LambdaStack
Properties:
TemplateURL: apigateway.yml
TimeoutInMinutes: 20
Parameters:
paramMockServerArn: !GetAtt LambdaStack.Outputs.MockServerArn
...
CodePudding user response:
The only way that could possibly work (without introducing custom resources) is if conditionNeedMock
is also in the root stack:
paramMockServerArn: !If [conditionNeedMock, !GetAtt LambdaStack.Outputs.MockServerArn, !Ref "AWS::NoValue"]