feat: Support different tags per resource (#319)

README.md

@@ -258,8 +258,12 @@ Users have the ability to:
 | create\_db\_subnet\_group | Whether to create a database subnet group | `bool` | `true` | no |
 | create\_monitoring\_role | Create IAM role with a defined name that permits RDS to send enhanced monitoring metrics to CloudWatch Logs. | `bool` | `false` | no |
 | create\_random\_password | Whether to create random password for RDS primary cluster | `bool` | `false` | no |
+| db\_instance\_tags | Additional tags for the DB instance | `map(string)` | `{}` | no |
+| db\_option\_group\_tags | Additional tags for the DB option group | `map(string)` | `{}` | no |
+| db\_parameter\_group\_tags | Additional tags for the  DB parameter group | `map(string)` | `{}` | no |
 | db\_subnet\_group\_description | Description of the DB subnet group to create | `string` | `""` | no |
 | db\_subnet\_group\_name | Name of DB subnet group. DB instance will be created in the VPC associated with the DB subnet group. If unspecified, will be created in the default VPC | `string` | `null` | no |
+| db\_subnet\_group\_tags | Additional tags for the DB subnet group | `map(string)` | `{}` | no |
 | db\_subnet\_group\_use\_name\_prefix | Determines whether to use `subnet_group_name` as is or create a unique name beginning with the `subnet_group_name` as the prefix | `bool` | `true` | no |
 | delete\_automated\_backups | Specifies whether to remove automated backups immediately after the DB instance is deleted | `bool` | `true` | no |
 | deletion\_protection | The database can't be deleted when this value is set to true. | `bool` | `false` | no |

examples/complete-mysql/main.tf

@@ -108,6 +108,18 @@ module "db" {
   ]
 
   tags = local.tags
+  db_instance_tags = {
+    "Sensitive" = "high"
+  }
+  db_option_group_tags = {
+    "Sensitive" = "low"
+  }
+  db_parameter_group_tags = {
+    "Sensitive" = "low"
+  }
+  db_subnet_group_tags = {
+    "Sensitive" = "high"
+  }
 }
 
 module "db_default" {

examples/complete-postgres/main.tf

@@ -111,6 +111,15 @@ module "db" {
   ]
 
   tags = local.tags
+  db_option_group_tags = {
+    "Sensitive" = "low"
+  }
+  db_parameter_group_tags = {
+    "Sensitive" = "low"
+  }
+  db_subnet_group_tags = {
+    "Sensitive" = "high"
+  }
 }
 
 

main.tf

@@ -26,7 +26,7 @@ module "db_subnet_group" {
   description     = var.db_subnet_group_description
   subnet_ids      = var.subnet_ids
 
-  tags = var.tags
+  tags = merge(var.tags, var.db_subnet_group_tags)
 }
 
 module "db_parameter_group" {
@@ -41,7 +41,7 @@ module "db_parameter_group" {
 
   parameters = var.parameters
 
-  tags = var.tags
+  tags = merge(var.tags, var.db_parameter_group_tags)
 }
 
 module "db_option_group" {
@@ -59,7 +59,7 @@ module "db_option_group" {
 
   timeouts = var.option_group_timeouts
 
-  tags = var.tags
+  tags = merge(var.tags, var.db_option_group_tags)
 }
 
 module "db_instance" {
@@ -131,5 +131,5 @@ module "db_instance" {
 
   s3_import = var.s3_import
 
-  tags = var.tags
+  tags = merge(var.tags, var.db_instance_tags)
 }

variables.tf

@@ -223,6 +223,30 @@ variable "tags" {
   default     = {}
 }
 
+variable "db_instance_tags" {
+  description = "Additional tags for the DB instance"
+  type        = map(string)
+  default     = {}
+}
+
+variable "db_option_group_tags" {
+  description = "Additional tags for the DB option group"
+  type        = map(string)
+  default     = {}
+}
+
+variable "db_parameter_group_tags" {
+  description = "Additional tags for the  DB parameter group"
+  type        = map(string)
+  default     = {}
+}
+
+variable "db_subnet_group_tags" {
+  description = "Additional tags for the DB subnet group"
+  type        = map(string)
+  default     = {}
+}
+
 # DB subnet group
 variable "create_db_subnet_group" {
   description = "Whether to create a database subnet group"