Use default labels on pubsub subscription when no override is provided

modules/pubsub/README.md

@@ -60,6 +60,7 @@ module "pubsub" {
   source     = "./fabric/modules/pubsub"
   project_id = var.project_id
   name       = "my-topic"
+  labels     = { test = "default" }
   subscriptions = {
     test-pull = {}
     test-pull-override = {

modules/pubsub/main.tf

@@ -54,7 +54,7 @@ resource "google_pubsub_subscription" "default" {
   project                      = var.project_id
   name                         = each.key
   topic                        = google_pubsub_topic.default.name
-  labels                       = each.value.labels
+  labels                       = coalesce(each.value.labels, var.labels)
   ack_deadline_seconds         = each.value.ack_deadline_seconds
   message_retention_duration   = each.value.message_retention_duration
   retain_acked_messages        = each.value.retain_acked_messages

tests/modules/pubsub/examples/subscriptions.yaml

@@ -20,7 +20,8 @@ values:
     enable_exactly_once_delivery: false
     enable_message_ordering: false
     filter: null
-    labels: null
+    labels:
+      test: default
     message_retention_duration: 604800s
     name: test-pull
     project: project-id
@@ -52,7 +53,8 @@ values:
     topic: my-topic
   module.pubsub.google_pubsub_topic.default:
     kms_key_name: null
-    labels: null
+    labels:
+      test: default
     message_retention_duration: null
     name: my-topic
     project: project-id