feat: add topic_labels (#73)

* add topic_labels

* generate README

README.md

@@ -63,6 +63,7 @@ Then perform the following commands on the root folder:
 | region | The region in which resources will be applied. | `string` | n/a | yes |
 | scheduler\_job | An existing Cloud Scheduler job instance | `object({ name = string })` | `null` | no |
 | time\_zone | The timezone to use in scheduler | `string` | `"Etc/UTC"` | no |
+| topic\_labels | A set of key/value label pairs to assign to the pubsub topic. | `map(string)` | `{}` | no |
 | topic\_name | Name of pubsub topic connecting the scheduled job and the function | `string` | `"test-topic"` | no |
 | vpc\_connector | The VPC Network Connector that this cloud function can connect to. It should be set up as fully-qualified URI. The format of this field is projects//locations//connectors/\*. | `string` | `null` | no |
 | vpc\_connector\_egress\_settings | The egress settings for the connector, controlling what traffic is diverted through it. Allowed values are ALL\_TRAFFIC and PRIVATE\_RANGES\_ONLY. If unset, this field preserves the previously set value. | `string` | `null` | no |

main.tf

@@ -45,6 +45,7 @@ module "pubsub_topic" {
   project_id          = var.project_id
   create_topic        = var.scheduler_job == null ? true : false
   grant_token_creator = var.grant_token_creator
+  topic_labels        = var.topic_labels
 }
 
 /******************************************

variables.tf

@@ -156,6 +156,12 @@ variable "topic_name" {
   default     = "test-topic"
 }
 
+variable "topic_labels" {
+  type        = map(string)
+  description = "A set of key/value label pairs to assign to the pubsub topic."
+  default     = {}
+}
+
 variable "message_data" {
   type        = string
   description = "The data to send in the topic message."