feat(dynamodb): Add support for enabling dynamodb insights

dynamodb.tf

@@ -121,3 +121,9 @@ module "dynamodb_autoscaler" {
   autoscale_min_write_capacity = var.dynamodb_autoscale_min_write_capacity
   autoscale_max_write_capacity = var.dynamodb_autoscale_max_write_capacity
 }
+
+resource "aws_dynamodb_contributor_insights" "this" {
+  count = local.count_dynamodb_insights
+
+  table_name = aws_dynamodb_table.this[0].name
+}

dynamodb_variables.tf

@@ -142,3 +142,9 @@ variable "dynamodb_enable_autoscaler" {
   description = "Whether or not to enable DynamoDB autoscaling"
   default     = false
 }
+
+variable "dynamodb_enable_insights" {
+  type        = bool
+  description = "Enables Contributor Insights for Dynamodb"
+  default     = false
+}

examples/dynamodb_base/main.tf

@@ -19,6 +19,7 @@ module "example_dynamodb_base" {
   dynamodb_autoscale_min_write_capacity = 5
   dynamodb_autoscale_max_write_capacity = 20
   dynamodb_enable_autoscaler            = true
+  dynamodb_enable_insights              = true
 }
 
 provider "aws" {

locals.tf

@@ -2,9 +2,10 @@ locals {
   create_s3 = var.enable_datastore && var.create_s3_bucket
   count_s3  = local.create_s3 ? 1 : 0
 
-  create_dynamodb = var.enable_datastore && var.create_dynamodb_table
-  count_dynamodb  = local.create_dynamodb ? 1 : 0
-
+  create_dynamodb          = var.enable_datastore && var.create_dynamodb_table
+  create_dynamodb_insights = var.enable_datastore && var.create_dynamodb_table && var.dynamodb_enable_insights
+  count_dynamodb          = local.create_dynamodb ? 1 : 0
+  count_dynamodb_insights = local.create_dynamodb_insights ? 1 : 0
   create_rds_instance = var.enable_datastore && var.create_rds_instance
   count_rds_instance  = local.create_rds_instance ? 1 : 0