feat: Add ability to append a randomized suffix to all bucket names (t…

…erraform-google-modules#130)

README.md

@@ -66,6 +66,7 @@ Functional examples are included in the
 | names | Bucket name suffixes. | `list(string)` | n/a | yes |
 | prefix | Prefix used to generate the bucket name. | `string` | n/a | yes |
 | project\_id | Bucket project id. | `string` | n/a | yes |
+| randomize\_suffix | Adds an identical, but randomized 4-character suffix to all bucket names | `bool` | `false` | no |
 | retention\_policy | Map of retention policy values. Format is the same as described in provider documentation https://www.terraform.io/docs/providers/google/r/storage_bucket#retention_policy | `any` | `{}` | no |
 | set\_admin\_roles | Grant roles/storage.objectAdmin role to admins and bucket\_admins. | `bool` | `false` | no |
 | set\_creator\_roles | Grant roles/storage.objectCreator role to creators and bucket\_creators. | `bool` | `false` | no |

main.tf

@@ -14,8 +14,16 @@
  * limitations under the License.
  */
 
+/******************************************
+  Bucket random id suffix configuration
+ *****************************************/
+resource "random_id" "bucket_suffix" {
+  byte_length = 2
+}
+
 locals {
   prefix       = var.prefix == "" ? "" : join("-", [var.prefix, lower(var.location), ""])
+  suffix       = var.randomize_suffix ? "-${random_id.bucket_suffix.hex}" : ""
   names_set    = toset(var.names)
   buckets_list = [for name in var.names : google_storage_bucket.buckets[name]]
   first_bucket = local.buckets_list[0]
@@ -32,7 +40,7 @@ locals {
 resource "google_storage_bucket" "buckets" {
   for_each = local.names_set
 
-  name          = "${local.prefix}${lower(each.value)}"
+  name          = "${local.prefix}${lower(each.value)}${local.suffix}"
   project       = var.project_id
   location      = var.location
   storage_class = var.storage_class

variables.tf

@@ -29,6 +29,12 @@ variable "names" {
   type        = list(string)
 }
 
+variable "randomize_suffix" {
+  description = "Adds an identical, but randomized 4-character suffix to all bucket names"
+  type        = bool
+  default     = false
+}
+
 variable "location" {
   description = "Bucket location."
   type        = string