feat : Add variable to set sns topic name

README.md

@@ -211,6 +211,7 @@ Available targets:
 | <a name="input_redrive_policy"></a> [redrive\_policy](#input\_redrive\_policy) | The SNS redrive policy as JSON. This overrides `var.redrive_policy_max_receiver_count` and the `deadLetterTargetArn` (supplied by `var.fifo_queue = true`) passed in by the module. | `string` | `null` | no |
 | <a name="input_redrive_policy_max_receiver_count"></a> [redrive\_policy\_max\_receiver\_count](#input\_redrive\_policy\_max\_receiver\_count) | The number of times a message is delivered to the source queue before being moved to the dead-letter queue. When the ReceiveCount for a message exceeds the maxReceiveCount for a queue, Amazon SQS moves the message to the dead-letter-queue. | `number` | `5` | no |
 | <a name="input_regex_replace_chars"></a> [regex\_replace\_chars](#input\_regex\_replace\_chars) | Terraform regular expression (regex) string.<br>Characters matching the regex will be removed from the ID elements.<br>If not set, `"/[^a-zA-Z0-9-]/"` is used to remove all characters other than hyphens, letters and digits. | `string` | `null` | no |
+| <a name="input_sns_topic_name"></a> [sns\_topic\_name](#input\_sns\_topic\_name) | The name of sns topic  | `string` | `"sns-topic-${uuid()}"` | no |
 | <a name="input_sns_topic_policy_json"></a> [sns\_topic\_policy\_json](#input\_sns\_topic\_policy\_json) | The fully-formed AWS policy as JSON | `string` | `""` | no |
 | <a name="input_sqs_dlq_enabled"></a> [sqs\_dlq\_enabled](#input\_sqs\_dlq\_enabled) | Enable delivery of failed notifications to SQS and monitor messages in queue. | `bool` | `false` | no |
 | <a name="input_sqs_dlq_max_message_size"></a> [sqs\_dlq\_max\_message\_size](#input\_sqs\_dlq\_max\_message\_size) | The limit of how many bytes a message can contain before Amazon SQS rejects it. An integer from 1024 bytes (1 KiB) up to 262144 bytes (256 KiB). The default for this attribute is 262144 (256 KiB). | `number` | `262144` | no |

main.tf

@@ -3,7 +3,9 @@ locals {
 
   kms_key_id = local.enabled && var.encryption_enabled && var.kms_master_key_id != "" ? var.kms_master_key_id : ""
 
-  sns_topic_name = var.fifo_topic ? "${module.this.id}.fifo" : module.this.id
+  default_sns_topic_name = var.sns_topic_name != "" ? var.sns_topic_name : "sns-topic-${uuid()}"
+
+  sns_topic_name = var.fifo_topic ? "${local.default_sns_topic_name}.fifo" : local.default_sns_topic_name
   sqs_queue_name = var.fifo_queue_enabled ? "${module.this.id}.fifo" : module.this.id
 
   sqs_dlq_enabled = local.enabled && var.sqs_dlq_enabled
@@ -15,7 +17,7 @@ resource "aws_sns_topic" "this" {
   count = local.enabled ? 1 : 0
 
   name                        = local.sns_topic_name
-  display_name                = replace(module.this.id, ".", "-") # dots are illegal in display names and for .fifo topics required as part of the name (AWS SNS by design)
+  display_name                = replace(local.sns_topic_name, ".", "-") # dots are illegal in display names and for .fifo topics required as part of the name (AWS SNS by design)
   kms_master_key_id           = local.kms_key_id
   delivery_policy             = var.delivery_policy
   fifo_topic                  = var.fifo_topic

variables.tf

@@ -49,6 +49,12 @@ variable "allowed_iam_arns_for_sns_publish" {
   default     = []
 }
 
+variable "sns_topic_name" {
+  type        = string
+  description = "The name of sns topic"
+  default     = ""
+}
+
 variable "sns_topic_policy_json" {
   type        = string
   description = "The fully-formed AWS policy as JSON"