Support Conditions

[t0yv0]

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Issue details

Similar to #206

According to https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/intrinsic-function-reference-conditions.html CF supports Conditions, and Fn::If is only one special way to use these conditions, for example they give in the docs:

NewVolume" : {
  "Type" : "AWS::EC2::Volume",
  "Condition" : "CreateProdResources",
  "Properties" : {
     "Size" : "100",
     "AvailabilityZone" : { "Fn::GetAtt" : [ "EC2Instance", "AvailabilityZone" ]}
}

This resource would be conditionally created if CreateProdResources evaluates to true.

It appears we might need to support this in pulumi-cdk, together with the more specific Fn::If.

Affected area/feature