Terraform for_each use case - amazon-web-services

Question

I am creating a bunch of Route 53 resolver rules in each region and this works great with for_each loop:
resource "aws_route53_resolver_rule" "resolver-rule" {
for_each = var.resolver-rules
domain_name = each.value.domain-name
name = format("core-%s", each.value.domain-label)
rule_type = "FORWARD"
resolver_endpoint_id = aws_route53_resolver_endpoint.outbound-endpoint.id
target_ip {
ip = each.value.forwarder1
}
target_ip {
ip = each.value.forwarder2
}
tags = merge(var.tags, map("Name", format("core-%s-%s-%s", var.team_name, var.environment, each.value.domain-label)))
}
My var looks like this:
variable "resolver-rules" {
description = "A map of parameters needed for each resolver rule"
type = map(object({
domain-name = string
domain-label = string
forwarder1 = string
forwarder2 = string
}))
}
resolver-rules = {
"resolver-rule1" = {
domain-name = "10.in-addr.arpa."
domain-label = "10-in-addr-arpa"
forwarder1 = "10.10.1.100"
forwarder2 = "10.10.2.100"
}
"resolver-rule2" = {
domain-name = "mycompany.com."
domain-label = "mycompany-com"
forwarder1 = "10.10.1.100"
forwarder2 = "10.10.2.100"
}
}
Now I need to associate those rules with resource share (not posting here):
resource "aws_ram_resource_association" "rule-association" {
for_each = var.resolver-rules
resource_arn = aws_route53_resolver_rule.resolver-rule.arn
resource_share_arn = aws_ram_resource_share.rte53-resolver-share.arn
}
Question: how do I modify (enumerate) my resource association part, so that each association would be created for each rule I define (it has to be 1 to 1 association). I just can't wrap my head around it :)

Answer 1

Your aws_route53_resolver_rule.resolver-rule will be a map with keys of resolver-rule1 and resolver-rule2.
Therefore to access its arn in your rule-association you could do the following:
resource "aws_ram_resource_association" "rule-association" {
for_each = var.resolver-rules
resource_arn = aws_route53_resolver_rule.resolver-rule[each.key].arn
resource_share_arn = aws_ram_resource_share.rte53-resolver-share.arn
}
In your question, aws_ram_resource_share.rte53-resolver-share.arn is not shown, thus I don't know if you also require some changes to it or not.