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# generals
sparse-intern-71089
09/19/2023, 3:19 PMThis message was deleted.
b
billowy-army-68599
09/19/2023, 3:20 PM
Are Stack A, B and C from the same Pulumi project?
g
gray-knife-50817
09/19/2023, 3:23 PMgood question, I should've clarified that - they're each in separate projects. we're using a module approach within the organisation. I'll update the post!
b
billowy-army-68599
09/19/2023, 3:25 PM
So in stack A, wouldn’t you just export an output, then reference it in Stack B and Stack C as a stack reference?
billowy-army-68599
09/19/2023, 3:26 PM
which language SDK are you using?
g
gray-knife-50817
09/19/2023, 3:29 PMusing Python. the thinking was I didn't want to repeat the same code writing the
StackReferenceOutputb
billowy-army-68599
09/19/2023, 3:36 PM
Generally that’s a 1 line code, but I will often abstract that away into a class, something like this:
Copy code
class VpcStackInfo(pulumi.StackReference):
vpc_id = pulumi.Output[Any]
private_subnet_ids = pulumi.Output[Any]
public_subnet_ids = pulumi.Output[Any]
cidr_block = pulumi.Output[Any]
def __init__(self, stack_name: str):
super().__init__(f"ignistech/vpc/{stack_name}")
self.vpc_id = self.require_output("vpc_id") # type: ignore
self.private_subnet_ids = self.require_output("private_subnet_ids") # type: ignore
self.public_subnet_ids = self.require_output("public_subnet_ids") # type: ignore
self.cidr_block = self.require_output("cidr_block") # type: ignore Copy code
vpc = stackinfo.VpcStackInfo(STACK)billowy-army-68599
09/19/2023, 3:36 PM
I really try not to use cross referenced functions, you run into lots of issues that way
g
gray-knife-50817
09/19/2023, 4:00 PMthanks for your help and suggestions I'll give that a go!
gray-knife-50817
09/20/2023, 11:02 AMI've used the class approach and I think it's better, thanks! the
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