Add condition to associate the default function (#26)

README.md

@@ -51,6 +51,7 @@
 | <a name="input_certificate_settings"></a> [certificate\_settings](#input\_certificate\_settings) | CloudFront certificate settings | `any` | <pre>{<br>  "minimum_protocol_version": "TLSv1.2_2021",<br>  "ssl_support_method": "sni-only"<br>}</pre> | no |
 | <a name="input_cloudfront_logging_config"></a> [cloudfront\_logging\_config](#input\_cloudfront\_logging\_config) | The logging configuration that controls how logs are written to your distribution | `map(string)` | `{}` | no |
 | <a name="input_cors_rule"></a> [cors\_rule](#input\_cors\_rule) | List of maps containing rules for Cross-Origin Resource Sharing for S3 bucket. | `any` | <pre>{<br>  "cors_rule": {<br>    "allowed_headers": [<br>      "*"<br>    ],<br>    "allowed_methods": [<br>      "PUT",<br>      "POST",<br>      "GET",<br>      "DELETE"<br>    ],<br>    "allowed_origins": [<br>      "*"<br>    ],<br>    "expose_headers": [<br>      "ETag"<br>    ],<br>    "max_age_seconds": 3000<br>  }<br>}</pre> | no |
+| <a name="input_create_associate_function"></a> [create\_associate\_function](#input\_create\_associate\_function) | If the CloudFront function should be associated with the default cache behavior. | `bool` | `false` | no |
 | <a name="input_create_bucket"></a> [create\_bucket](#input\_create\_bucket) | Whether to create S3 bucket, default to true | `bool` | `true` | no |
 | <a name="input_create_certificate"></a> [create\_certificate](#input\_create\_certificate) | Create ACM certificate | `bool` | `true` | no |
 | <a name="input_create_distribution"></a> [create\_distribution](#input\_create\_distribution) | Whether to create distribution | `bool` | `true` | no |

cloudfront.tf

@@ -48,11 +48,11 @@ module "cdn" {
     origin_request_policy_id   = data.aws_cloudfront_origin_request_policy.this.id
     cache_policy_id            = data.aws_cloudfront_cache_policy.this.id
 
-    function_association = {
-      viewer-request = {
-        function_arn = aws_cloudfront_function.viewer_request.arn
-      }
-    }
+    function_association = var.create_associate_function ? [{
+      event_type   = "viewer-request"
+      function_arn = aws_cloudfront_function.viewer_request[0].arn
+    }] : []
+
   }, var.default_cache_behavior)
 
   ordered_cache_behavior = var.ordered_cache_behavior
@@ -76,6 +76,7 @@ module "cdn" {
 }
 
 resource "aws_cloudfront_function" "viewer_request" {
+  count   = var.create_associate_function ? 1 : 0
   name    = var.default_index_function_name
   runtime = "cloudfront-js-1.0"
   publish = true

variables.tf

@@ -283,6 +283,12 @@ variable "web_acl_id" {
   default     = ""
 }
 
+variable "create_associate_function" {
+  description = "If the CloudFront function should be associated with the default cache behavior."
+  type        = bool
+  default     = false
+}
+
 variable "default_index_function_name" {
   description = "Name of the CloudFront Function to create for index page redirection"
   type        = string