How to get Cloudformation stack name from within blueprint

[Spareo]

I am trying to figure out how to access get the name of the stack as it's shown in CloudFormation from within the blueprint during deployment? I have a script that builds the config.yml file and sets the stack_name property of the stack in the config file. Stacker build then deploys the stack with the namespace prepended to it in CloudFormation.

Is there a way to get that final stack as it's shown in CloudFormation from within the blueprint?

[phobologic]

Hey @Spareo - if you want to use it inside the template, you can always use the ${AWS::StackName} pseudo parameter. Sub can make that super easy to use in a templated way:

https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/pseudo-parameter-reference.html#cfn-pseudo-param-stackname

Let me know if that helps, thanks!

[Spareo]

Is there a way to force that to resolve into the actual string that is the stack name? I need to pass into a cloud watch event that takes a json string object so Im calling json.dumps on an array of inputs that I want to pass into the event.

If I just use Ref("AWS::StackName") won't that ust put the name of the type into my array?

[phobologic]

There's a few way to do this - just to verify: you want the stackname in parts of a JSON document that you want to submit in a cloudformation template? Can you share the Cloudformation resource itself that you're dealing with to give me a better idea?

[Spareo]

I was able to back into it like this from within the blueprint:

def get_stack_name(self):
        stacks = self.context.get_stacks()
        for stack in stacks:
            if (stack.blueprint.name == self.name):
                return stack.fqn

[Spareo]

Closing the issue since I have a working solution