Functions

element

element retrieves a single element from a list.

element(list, index)

> element(["a", "b", "c"], 1)
b

index

index finds the element index for a given value in a list.

> index(["a", "b", "c"], "b")
1

lookup

lookup retrieves the value of a single element from a map, given its key. If the given key does not exist, a the given default value is returned instead.

> lookup({a="ay", b="bee"}, "a", "what?")
ay
> lookup({a="ay", b="bee"}, "c", "what?")
what?

random_shuffle

data "aws_subnet_ids" "all" {
  vpc_id = "${var.vpc_id}"
}
output "SubnetIDs" {
   value = "${data.aws_subnet_ids.all.ids}"
}

resource "random_shuffle" "az" {
  input = ["${data.aws_subnet_ids.all.ids}"]
  result_count = 1
}

output "SubnetID" {
  value = "${random_shuffle.az.result}"
}


output "SubnetID" {
  value = "${element("${data.aws_subnet_ids.all.ids}", 4)}"
}