feat: allow final snapshot creation (#120)

* feat: allow final snapshot creation

* Auto Format
Co-authored-by: cloudpossebot <11232728+cloudpossebot@users.noreply.github.com>

README.md

@@ -247,6 +247,7 @@ Available targets:
 | <a name="input_environment"></a> [environment](#input\_environment) | Environment, e.g. 'uw2', 'us-west-2', OR 'prod', 'staging', 'dev', 'UAT' | `string` | `null` | no |
 | <a name="input_existing_security_groups"></a> [existing\_security\_groups](#input\_existing\_security\_groups) | List of existing Security Group IDs to place the cluster into. Set `use_existing_security_groups` to `true` to enable using `existing_security_groups` as Security Groups for the cluster | `list(string)` | `[]` | no |
 | <a name="input_family"></a> [family](#input\_family) | Redis family | `string` | `"redis4.0"` | no |
+| <a name="input_final_snapshot_identifier"></a> [final\_snapshot\_identifier](#input\_final\_snapshot\_identifier) | The name of your final node group (shard) snapshot. ElastiCache creates the snapshot from the primary node in the cluster. If omitted, no final snapshot will be made. | `string` | `null` | no |
 | <a name="input_id_length_limit"></a> [id\_length\_limit](#input\_id\_length\_limit) | Limit `id` to this many characters (minimum 6).<br>Set to `0` for unlimited length.<br>Set to `null` for default, which is `0`.<br>Does not affect `id_full`. | `number` | `null` | no |
 | <a name="input_instance_type"></a> [instance\_type](#input\_instance\_type) | Elastic cache instance type | `string` | `"cache.t2.micro"` | no |
 | <a name="input_kms_key_id"></a> [kms\_key\_id](#input\_kms\_key\_id) | The ARN of the key that you wish to use if encrypting at rest. If not supplied, uses service managed encryption. `at_rest_encryption_enabled` must be set to `true` | `string` | `null` | no |
@@ -297,14 +298,13 @@ Like this project? Please give it a ★ on [our GitHub](https://github.com/cloud
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+
 ## Related Projects
 
 Check out these related projects.
 
 - [terraform-null-label](https://github.com/cloudposse/terraform-null-label) - Terraform module designed to generate consistent names and tags for resources. Use terraform-null-label to implement a strict naming convention.
 
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docs/terraform.md

@@ -65,6 +65,7 @@
 | <a name="input_environment"></a> [environment](#input\_environment) | Environment, e.g. 'uw2', 'us-west-2', OR 'prod', 'staging', 'dev', 'UAT' | `string` | `null` | no |
 | <a name="input_existing_security_groups"></a> [existing\_security\_groups](#input\_existing\_security\_groups) | List of existing Security Group IDs to place the cluster into. Set `use_existing_security_groups` to `true` to enable using `existing_security_groups` as Security Groups for the cluster | `list(string)` | `[]` | no |
 | <a name="input_family"></a> [family](#input\_family) | Redis family | `string` | `"redis4.0"` | no |
+| <a name="input_final_snapshot_identifier"></a> [final\_snapshot\_identifier](#input\_final\_snapshot\_identifier) | The name of your final node group (shard) snapshot. ElastiCache creates the snapshot from the primary node in the cluster. If omitted, no final snapshot will be made. | `string` | `null` | no |
 | <a name="input_id_length_limit"></a> [id\_length\_limit](#input\_id\_length\_limit) | Limit `id` to this many characters (minimum 6).<br>Set to `0` for unlimited length.<br>Set to `null` for default, which is `0`.<br>Does not affect `id_full`. | `number` | `null` | no |
 | <a name="input_instance_type"></a> [instance\_type](#input\_instance\_type) | Elastic cache instance type | `string` | `"cache.t2.micro"` | no |
 | <a name="input_kms_key_id"></a> [kms\_key\_id](#input\_kms\_key\_id) | The ARN of the key that you wish to use if encrypting at rest. If not supplied, uses service managed encryption. `at_rest_encryption_enabled` must be set to `true` | `string` | `null` | no |

main.tf

@@ -102,6 +102,7 @@ resource "aws_elasticache_replication_group" "default" {
   snapshot_arns                 = var.snapshot_arns
   snapshot_window               = var.snapshot_window
   snapshot_retention_limit      = var.snapshot_retention_limit
+  final_snapshot_identifier     = var.final_snapshot_identifier
   apply_immediately             = var.apply_immediately
 
   tags = module.this.tags

variables.tf

@@ -212,6 +212,12 @@ variable "snapshot_retention_limit" {
   default     = 0
 }
 
+variable "final_snapshot_identifier" {
+  type        = string
+  description = "The name of your final node group (shard) snapshot. ElastiCache creates the snapshot from the primary node in the cluster. If omitted, no final snapshot will be made."
+  default     = null
+}
+
 variable "cluster_mode_enabled" {
   type        = bool
   description = "Flag to enable/disable creation of a native redis cluster. `automatic_failover_enabled` must be set to `true`. Only 1 `cluster_mode` block is allowed"