CODEWITHSUNDEEP
aws-cloudformation
Swanand Gajendragadkar
Swanand Gajendragadkar

Reputation: 101

CloudFormation: How to use Fn::Import value in conditions?

I have two stacks, the VPC deployment stack and my app deployment stack. In VPC stack, I am exporting value called as EnvType which can be a dev, prod or staging. As per this exported value, I want to deploy one resource in app deployment stack. If EnvType = dev, then don't deploy it. Otherwise, deploy it. How I can achieve this?

Upvotes: 1

Views: 1246

Answers (1)

Marcin
Marcin

Reputation: 238497

I don't think you can do this, as ImportValue can't be used in conditions.

You can easily verify that using the two sample templates:

bucket1.yaml (exports EnvType)

---
Resources:

  MyBucket:
    Type: AWS::S3::Bucket

Outputs:

  EnvType:
    Value: "prod"
    Export:
      Name: EnvType

bucket2.yaml (imports EnvType and tries to use it in IsProd condition)

---
Conditions:

  IsProd:
    !Equals [!ImportValue EnvType, 'prod']

Resources:

  MyBucket2:
    Condition: IsProd
    Type: AWS::S3::Bucket

Upvotes: 2

Related Questions