feat: Support disabling storage autoscaling (#15)

Co-authored-by: Bryant Biggs <[email protected]>

Author: nishsak96

README.md

@@ -187,6 +187,7 @@ No modules.
 | <a name="input_create_connect_worker_configuration"></a> [create\_connect\_worker\_configuration](#input\_create\_connect\_worker\_configuration) | Determines whether to create connect worker configuration | `bool` | `false` | no |
 | <a name="input_create_schema_registry"></a> [create\_schema\_registry](#input\_create\_schema\_registry) | Determines whether to create a Glue schema registry for managing Avro schemas for the cluster | `bool` | `true` | no |
 | <a name="input_create_scram_secret_association"></a> [create\_scram\_secret\_association](#input\_create\_scram\_secret\_association) | Determines whether to create SASL/SCRAM secret association | `bool` | `false` | no |
+| <a name="input_enable_storage_autoscaling"></a> [enable\_storage\_autoscaling](#input\_enable\_storage\_autoscaling) | Determines whether autoscaling is enabled for storage | `bool` | `true` | no |
 | <a name="input_encryption_at_rest_kms_key_arn"></a> [encryption\_at\_rest\_kms\_key\_arn](#input\_encryption\_at\_rest\_kms\_key\_arn) | You may specify a KMS key short ID or ARN (it will always output an ARN) to use for encrypting your data at rest. If no key is specified, an AWS managed KMS ('aws/msk' managed service) key will be used for encrypting the data at rest | `string` | `null` | no |
 | <a name="input_encryption_in_transit_client_broker"></a> [encryption\_in\_transit\_client\_broker](#input\_encryption\_in\_transit\_client\_broker) | Encryption setting for data in transit between clients and brokers. Valid values: `TLS`, `TLS_PLAINTEXT`, and `PLAINTEXT`. Default value is `TLS` | `string` | `null` | no |
 | <a name="input_encryption_in_transit_in_cluster"></a> [encryption\_in\_transit\_in\_cluster](#input\_encryption\_in\_transit\_in\_cluster) | Whether data communication among broker nodes is encrypted. Default value: `true` | `bool` | `null` | no |

main.tf

@@ -231,7 +231,7 @@ resource "aws_cloudwatch_log_group" "this" {
 ################################################################################
 
 resource "aws_appautoscaling_target" "this" {
-  count = var.create ? 1 : 0
+  count = var.create && var.enable_storage_autoscaling ? 1 : 0
 
   max_capacity       = var.scaling_max_capacity
   min_capacity       = 1
@@ -242,7 +242,7 @@ resource "aws_appautoscaling_target" "this" {
 }
 
 resource "aws_appautoscaling_policy" "this" {
-  count = var.create ? 1 : 0
+  count = var.create && var.enable_storage_autoscaling ? 1 : 0
 
   name               = "${var.name}-broker-storage-scaling"
   policy_type        = "TargetTrackingScaling"

variables.tf

@@ -256,6 +256,12 @@ variable "cloudwatch_log_group_kms_key_id" {
 # Storage Autoscaling
 ################################################################################
 
+variable "enable_storage_autoscaling" {
+  description = "Determines whether autoscaling is enabled for storage"
+  type        = bool
+  default     = true
+}
+
 variable "scaling_max_capacity" {
   description = "Max storage capacity for Kafka broker autoscaling"
   type        = number