Creating dynamic resources with Terraform for_each - amazon-web-services

Question

I would like to create AWS SSM Parameters using Terraform, with the parameters being passed in as input variables.
I see there is a for_each feature, but how can this be applied to top level properties within a terraform resource? From the documentation, the use of for_each appears to be restricted to not work on top level properties of a resource, am I misunderstanding?
This is what I am trying to accomplish:
main.tf
resource "aws_ssm_parameter" "ssm_parameters" {
for_each = var.params
content {
name = name.value
type = "String"
overwrite = true
value = paramValue.value
tags = var.tags
lifecycle {
ignore_changes = [
tags,
value
]
}
}
}
variables.tf
variable "params" {
default = [
{
name = "albUrl"
paramValue = "testa"
},
{
name = "rdsUrl1"
paramValue = "testb"
},
{
name = "rdsUrl2"
valparamValueue = "testc"
},
]
}

Answer 1

You can use for each, but you need to modify its syntax and fix syntax in your var.params:
variable "params" {
default = [
{
name = "albUrl"
paramValue = "testa"
},
{
name = "rdsUrl1"
paramValue = "testb"
},
{
name = "rdsUrl2"
paramValue = "testc"
},
]
}
Then to use for each, and create 3 ssm parameters:
resource "aws_ssm_parameter" "ssm_parameters" {
for_each = {for v in var.params: v.name => v.paramValue}
type = "String"
name = each.key
value = each.value
overwrite = true
}
In the above you have to project your list(map) to a map as it is required for for_each.