feat: add carbon_footprint_export_table_name output

Author: JohannesRudolph

README.md

@@ -32,7 +32,7 @@ To run this module, you need the following:
     # Only required when you need your landing zone to invoke a cloud function
     "cloudfunctions.functions.getIamPolicy",
     "cloudfunctions.functions.setIamPolicy",
-    # Only required for the optional submodule for exporting carbon data    
+    # Only required for the optional submodule for exporting carbon data  
     "resourcemanager.projects.update",
     "serviceusage.services.enable",
     "bigquery.transfers.update"
@@ -177,6 +177,7 @@ No resources.
 
 | Name | Description |
 |------|-------------|
+| <a name="output_carbon_footprint_export_table_name"></a> [carbon\_footprint\_export\_table\_name](#output\_carbon\_footprint\_export\_table\_name) | The BigQuery table name containing the GCP Carbon Footprint BigQuery export. |
 | <a name="output_cloud_billing_export_table_name"></a> [cloud\_billing\_export\_table\_name](#output\_cloud\_billing\_export\_table\_name) | The BigQuery table name containing the GCP Cloud Billing BigQuery export. |
 | <a name="output_kraken_sa_email"></a> [kraken\_sa\_email](#output\_kraken\_sa\_email) | Kraken service account email. |
 | <a name="output_kraken_sa_key"></a> [kraken\_sa\_key](#output\_kraken\_sa\_key) | Kraken service account key. |

main.tf

@@ -25,8 +25,8 @@ module "carbon_export" {
   source = "./modules/meshcloud-carbon-export/"
   count  = var.carbon_export_module_enabled ? 1 : 0
 
-  carbon_data_export_dataset_id = var.carbon_footprint_dataset_id
   carbon_data_export_project_id = var.cloud_billing_export_project_id # using the same project as for billing
+  carbon_data_export_dataset_id = var.carbon_footprint_dataset_id
   carbon_dataset_region         = var.carbon_footprint_dataset_location
 
   billing_account_id = var.billing_account_id

modules/meshcloud-carbon-export/outputs.tf

@@ -1,4 +1,7 @@
 output "carbon_footprint_export_table_name" {
   description = "The BigQuery table name containing the GCP Carbon Footprint BigQuery export."
-  value       = "${var.carbon_data_export_project_id}.${var.carbon_data_export_dataset_id}.${var.carbon_data_export_dataset_id}"
+
+  # note carbon_footprint is the default table name that google's data transfer config creates
+  # we can't control this via terraform right now
+  value = "${var.carbon_data_export_project_id}.${var.carbon_data_export_dataset_id}.carbon_footprint"
 }

outputs.tf

@@ -29,3 +29,8 @@ output "cloud_billing_export_table_name" {
   description = "The BigQuery table name containing the GCP Cloud Billing BigQuery export."
   value       = "${var.cloud_billing_export_project_id}.${var.cloud_billing_export_dataset_id}.${var.cloud_billing_export_table_id}"
 }
+
+output "carbon_footprint_export_table_name" {
+  description = "The BigQuery table name containing the GCP Carbon Footprint BigQuery export."
+  value       = try(module.carbon_export[0].carbon_footprint_export_table_name, null)
+}