There’s (now) a lookup
function supported in the terraform interpolation syntax, that allows you to lookup dynamic keys in a map.
Using this, I can now do stuff like:
output "image_bucket_name" {
value = "${lookup(var.image_bucket_names, var.environment, "No way this should happen")}"
}
where:
variable "image_bucket_names" {
type = "map"
default = {
development = "bucket-dev"
staging = "bucket-for-staging"
preprod = "bucket-name-for-preprod"
production = "bucket-for-production"
}
}
and environment
is a simple string variable.