feat: add create_bucket flag (#147)

Co-authored-by: Awais Malik <awmalik@google.com>
Co-authored-by: Bharath KKB <bharathkrishnakb@gmail.com>

README.md

@@ -40,6 +40,7 @@ Then perform the following commands on the root folder:
 |------|-------------|------|---------|:--------:|
 | bucket\_force\_destroy | When deleting the GCS bucket containing the cloud function, delete all objects in the bucket first. | `bool` | `true` | no |
 | bucket\_name | The name to apply to the bucket. Will default to a string of <project-id>-scheduled-function-XXXX> with XXXX being random characters. | `string` | `""` | no |
+| create\_bucket | Create bucket (default). Set to `false` to use existing one | `bool` | `true` | no |
 | function\_available\_memory\_mb | The amount of memory in megabytes allotted for the function to use. | `number` | `256` | no |
 | function\_description | The description of the function. | `string` | `"Processes log export events provided through a Pub/Sub topic subscription."` | no |
 | function\_docker\_registry | Docker Registry to use for storing the function's Docker images. Allowed values are CONTAINER\_REGISTRY (default) and ARTIFACT\_REGISTRY. | `string` | `null` | no |

main.tf

@@ -79,6 +79,7 @@ module "main" {
   bucket_force_destroy               = var.bucket_force_destroy
   bucket_labels                      = var.function_source_archive_bucket_labels
   bucket_name                        = var.bucket_name == "" ? "${var.project_id}-scheduled-function-${random_id.suffix.hex}" : var.bucket_name
+  create_bucket                      = var.create_bucket
   description                        = var.function_description
   environment_variables              = var.function_environment_variables
   secret_environment_variables       = var.function_secret_environment_variables

variables.tf

@@ -170,6 +170,12 @@ variable "bucket_force_destroy" {
   description = "When deleting the GCS bucket containing the cloud function, delete all objects in the bucket first."
 }
 
+variable "create_bucket" {
+  type        = bool
+  default     = true
+  description = "Create bucket (default). Set to `false` to use existing one"
+}
+
 variable "function_name" {
   type        = string
   description = "The name to apply to the function"