Support for max_allocated_storage (#146)

* add support for max_allocated_storage

* add support for max_allocated_storage

* add support for max_allocated_storage

* max_allocated_storage into documentation

* changed required type to 'number'

README.md

@@ -168,7 +168,8 @@ module "db" {
 | license\_model | License model information for this DB instance. Optional, but required for some DB engines, i.e. Oracle SE1 | string | `""` | no |
 | maintenance\_window | The window to perform maintenance in. Syntax: 'ddd:hh24:mi-ddd:hh24:mi'. Eg: 'Mon:00:00-Mon:03:00' | string | n/a | yes |
 | major\_engine\_version | Specifies the major version of the engine that this option group should be associated with | string | `""` | no |
-| monitoring\_interval | The interval, in seconds, between points when Enhanced Monitoring metrics are collected for the DB instance. To disable collecting Enhanced Monitoring metrics, specify 0. The default is 0. Valid Values: 0, 1, 5, 10, 15, 30, 60. | number | `"0"` | no |
+| max\_allocated\_storage | Specifies the maximum value for storage autoscaling | number | `""` | no |
+  monitoring\_interval | The interval, in seconds, between points when Enhanced Monitoring metrics are collected for the DB instance. To disable collecting Enhanced Monitoring metrics, specify 0. The default is 0. Valid Values: 0, 1, 5, 10, 15, 30, 60. | number | `"0"` | no |
 | monitoring\_role\_arn | The ARN for the IAM role that permits RDS to send enhanced monitoring metrics to CloudWatch Logs. Must be specified if monitoring_interval is non-zero. | string | `""` | no |
 | monitoring\_role\_name | Name of the IAM role which will be created when create_monitoring_role is enabled. | string | `"rds-monitoring-role"` | no |
 | multi\_az | Specifies if the RDS instance is multi-AZ | bool | `"false"` | no |

main.tf

@@ -97,7 +97,7 @@ module "db_instance" {
 
   backup_retention_period = var.backup_retention_period
   backup_window           = var.backup_window
-
+  max_allocated_storage   = var.max_allocated_storage
   monitoring_interval     = var.monitoring_interval
   monitoring_role_arn     = var.monitoring_role_arn
   monitoring_role_name    = var.monitoring_role_name

modules/db_instance/main.tf

@@ -79,6 +79,7 @@ resource "aws_db_instance" "this" {
   skip_final_snapshot         = var.skip_final_snapshot
   copy_tags_to_snapshot       = var.copy_tags_to_snapshot
   final_snapshot_identifier   = var.final_snapshot_identifier
+  max_allocated_storage       = var.max_allocated_storage
 
   performance_insights_enabled = var.performance_insights_enabled
 
@@ -148,7 +149,7 @@ resource "aws_db_instance" "this_mssql" {
   skip_final_snapshot          = var.skip_final_snapshot
   copy_tags_to_snapshot        = var.copy_tags_to_snapshot
   final_snapshot_identifier    = var.final_snapshot_identifier
-
+  max_allocated_storage        = var.max_allocated_storage
   performance_insights_enabled = var.performance_insights_enabled
 
   backup_retention_period = var.backup_retention_period

modules/db_instance/variables.tf

@@ -261,3 +261,9 @@ variable "performance_insights_enabled" {
   type        = bool
   default     = false
 }
+
+variable "max_allocated_storage" {
+  description = "Specifies the value for Storage Autoscaling"
+  type        = number
+  default     = 0
+}

variables.tf

@@ -330,3 +330,9 @@ variable "performance_insights_enabled" {
   type        = bool
   default     = false
 }
+
+variable "max_allocated_storage" {
+  description = "Specifies the value for Storage Autoscaling"
+  type        = number
+  default     = 0
+}