feat: Added support for custom CIS alarm names (#29)

Author: ryanoolala

modules/cis-alarms/README.md

@@ -39,6 +39,7 @@ No modules.
 | <a name="input_create"></a> [create](#input\_create) | Whether to create the Cloudwatch log metric filter and metric alarms | `bool` | `true` | no |
 | <a name="input_disabled_controls"></a> [disabled\_controls](#input\_disabled\_controls) | List of IDs of disabled CIS controls | `list(string)` | `[]` | no |
 | <a name="input_log_group_name"></a> [log\_group\_name](#input\_log\_group\_name) | The name of the log group to associate the metric filter with | `string` | `""` | no |
+| <a name="input_name_prefix"></a> [name\_prefix](#input\_name\_prefix) | A name prefix for the cloudwatch alarm (if use\_random\_name\_prefix is true, this will be ignored) | `string` | `""` | no |
 | <a name="input_namespace"></a> [namespace](#input\_namespace) | The namespace where metric filter and metric alarm should be cleated | `string` | `"CISBenchmark"` | no |
 | <a name="input_tags"></a> [tags](#input\_tags) | A mapping of tags to assign to all resources | `map(string)` | `{}` | no |
 | <a name="input_use_random_name_prefix"></a> [use\_random\_name\_prefix](#input\_use\_random\_name\_prefix) | Whether to prefix resource names with random prefix | `bool` | `false` | no |
@@ -49,4 +50,4 @@ No modules.
 |------|-------------|
 | <a name="output_cloudwatch_metric_alarm_arns"></a> [cloudwatch\_metric\_alarm\_arns](#output\_cloudwatch\_metric\_alarm\_arns) | List of ARNs of the Cloudwatch metric alarm |
 | <a name="output_cloudwatch_metric_alarm_ids"></a> [cloudwatch\_metric\_alarm\_ids](#output\_cloudwatch\_metric\_alarm\_ids) | List of IDs of the Cloudwatch metric alarm |
-<!-- END OF PRE-COMMIT-TERRAFORM DOCS HOOK -->
+<!-- END OF PRE-COMMIT-TERRAFORM DOCS HOOK -->

modules/cis-alarms/main.tf

@@ -78,7 +78,7 @@ locals {
 
   ###############
 
-  prefix   = var.use_random_name_prefix ? "${random_pet.this[0].id}-" : ""
+  prefix   = var.use_random_name_prefix ? "${random_pet.this[0].id}-" : var.name_prefix
   controls = { for k, v in local.all_controls : k => v if !contains(var.disabled_controls, k) }
 }
 

modules/cis-alarms/variables.tf

@@ -10,6 +10,12 @@ variable "use_random_name_prefix" {
   default     = false
 }
 
+variable "name_prefix" {
+  description = "A name prefix for the cloudwatch alarm (if use_random_name_prefix is true, this will be ignored)"
+  type        = string
+  default     = ""
+}
+
 variable "disabled_controls" {
   description = "List of IDs of disabled CIS controls"
   type        = list(string)