add deprecation output

Author: npalm

examples/default/outputs.tf

@@ -13,3 +13,8 @@ output "webhook_secret" {
   value     = random_id.random.hex
 }
 
+output "deprecated_variables_warning" {
+  value = join("", [
+    module.runners.deprecated_variables_warning,
+  ])
+}

examples/multi-runner/outputs.tf

@@ -6,3 +6,9 @@ output "webhook_secret" {
   sensitive = true
   value     = random_id.random.hex
 }
+
+output "deprecated_variables_warning" {
+  value = join("", [
+    module.runners.deprecated_variables_warning,
+  ])
+}

examples/test/main.tf

@@ -0,0 +1,43 @@
+# data "aws_ami" "runner" {
+#   most_recent = "true"
+
+#   dynamic "filter" {
+#     for_each = local.ami_filter
+#     content {
+#       name   = filter.key
+#       values = filter.value
+#     }
+#   }
+
+#   owners = var.ami_owners
+# }
+
+# lookup ami default owner Amazon, default ami Amazon linux
+
+variable "ami_owners" {
+  type    = list(string)
+  default = ["amazon"]
+}
+
+variable "ami_filter" {
+  type    = map(list(string))
+  default = { name = ["al2023-ami-2023.*-kernel-6.*-x86_64"] }
+}
+
+data "aws_ami" "runner" {
+  most_recent = "true"
+
+  dynamic "filter" {
+    for_each = var.ami_filter
+    content {
+      name   = filter.key
+      values = filter.value
+    }
+  }
+
+  owners = var.ami_owners
+}
+
+output "ami_id" {
+  value = data.aws_ami.runner
+}

modules/multi-runner/outputs.tf

@@ -67,3 +67,14 @@ output "instance_termination_handler" {
     lambda_role      = module.instance_termination_watcher[0].spot_termination_handler.lambda_role
   } : null
 }
+
+output "deprecated_variables_warning" {
+  description = "Warning for deprecated variables usage"
+  value = join("", [
+    for key, runner_config in var.multi_runner_config : (
+      try(runner_config.ami_id_ssm_parameter_name, null) != null ?
+      "DEPRECATION WARNING: The variable 'ami_id_ssm_parameter_name' in runner '${key}' is deprecated and will be removed in a future version. Please use 'ami_id_ssm_parameter_arn' instead.\n" :
+      ""
+    )
+  ])
+}

outputs.tf

@@ -75,3 +75,10 @@ output "instance_termination_handler" {
     lambda_role      = module.instance_termination_watcher[0].spot_termination_handler.lambda_role
   } : null
 }
+
+output "deprecated_variables_warning" {
+  description = "Warning for deprecated variables usage"
+  value = join("", [
+    var.ami_id_ssm_parameter_name != null ? "DEPRECATION WARNING: The variable 'ami_id_ssm_parameter_name' is deprecated and will be removed in a future version. Please use 'ami_id_ssm_parameter_arn' instead.\n" : "",
+  ])
+}