Data lookup by ID

[Tbohunek]

Community Note

• Better click 👍 than comment +1

Description

Allow to look up data by id to:

• reduce the number of variables explicitly passed into a module like name, location, tags,..
• solve dependency issues when the resource used for data doesn't exist yet.

New or Affected Resource(s)

• All data resources for azurerm and azuread
• Potentially all of Terraform data providers

Potential Terraform Configuration

# ROOT MODULE
resource "azurerm_policy_set_definition" "policy" {
  name = "my_policy"
  ...
}

module "child_1_module"{
  source    = "./child"
  policy_id = azurerm_policy_set_definition.policy.id
}

# CHILD MODULE
variable "policy_id" {}
data "azurerm_policy_set_definition" "policy" {
  id = var.policy_id
}
resource "azurerm_policy_assignment" "policy_scope" {
  name                 = "${data.azurerm_policy_set_definition.policy.name}_scope"
  display_name         = "${data.azurerm_policy_set_definition.policy.display_name} Scope"
  scope                = var.scope
  policy_definition_id = data.azurerm_policy_set_definition.policy.id
  ...
}