Merge pull request #68 from pbs/optional-file

update engine-mode and version in optional file

README.md

@@ -7,7 +7,7 @@
 Use this URL for the source of the module. See the usage examples below for more details.
 
 ```hcl
-github.com/pbs/terraform-aws-rds-module?ref=0.4.0
+github.com/pbs/terraform-aws-rds-module?ref=x.y.z
 ```
 
 ### Alternative Installation Methods
@@ -28,7 +28,7 @@ Integrate this module like so:
 
 ```hcl
 module "rds" {
-  source = "github.com/pbs/terraform-aws-rds-module?ref=0.4.0"
+  source = "github.com/pbs/terraform-aws-rds-module?ref=x.y.z"
 
   # Required Parameters
   private_hosted_zone = "example.local"
@@ -47,7 +47,7 @@ module "rds" {
 
 If this repo is added as a subtree, then the version of the module should be close to the version shown here:
 
-`0.4.0`
+`x.y.z`
 
 Note, however that subtrees can be altered as desired within repositories.
 

optional.tf

@@ -53,8 +53,18 @@ variable "engine_mode" {
   default     = "provisioned"
   type        = string
   validation {
-    condition     = var.engine_mode != "serverless"
-    error_message = "This module does not support Aurora Serverless v1. Please switch to Aurora Serverless v2 instead by leaving this value set to the default value."
+    condition     = var.engine_mode == "provisioned" || var.engine_mode == "serverless"
+    error_message = "This module supports only Aurora provisioned or Serverless v2. Please set engine_mode to 'serverless' for Serverless v2 or 'provisioned' for provisioned mode."
+  }
+}
+
+variable "engine_version" {
+  description = "Engine version of the RDS cluster"
+  default     = "14.6" # Use a valid version for Serverless v2
+  type        = string
+  validation {
+    condition     = (var.engine_version >= "13.7" && var.engine_version <= "13.7") || (var.engine_version >= "14" && var.engine_version <= "15")
+    error_message = "Ensure the engine version is compatible with Aurora PostgreSQL versions that support Serverless v2 (>= 13.7 or 14.x)."
   }
 }