google_billing_budget services bug

[alanvuong]

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Terraform Version

Terraform v1.2.5
on linux_amd64

• provider registry.terraform.io/hashicorp/google v4.30.0
• provider registry.terraform.io/hashicorp/google-beta v4.30.0

Affected Resource(s)

• google_billing_budget

Terraform Configuration Files

Initial deploy of google_billing_budget is fine. Any subsequent change to services in budget_filter will not be applied, even when terraform confirms Apply complete

resource "google_billing_budget" "devbudget" {
  billing_account = var.billing_account_id
  display_name    = "dev budget"

  budget_filter {
    projects        = ["projects/XXXX"]
    calendar_period = "YEAR"
    services        = ["services/24E6-581D-38E5"]
  }

  amount {
    specified_amount {
      units = "100"
    }
  }

Debug Output

https://gist.github.com/alanvuong/26208f42a43f7f68e105923642c7bddd

Panic Output

Expected Behavior

Changes to the services in budget_filter should be updated in GCP Budgets

Actual Behavior

When changes to services in budget_filter block are made, changes are detected and a confirmation of Apply complete! however there are no actual changes to the google budget. Any other change in the google_billing_budget resource is actioned.

Steps to Reproduce

1. Create google_billing_budget resource with budget_filter with or without services declared - terraform plan/apply
2. Modify the same google_billing_budget to add or change services in 'budget_filter'
3. 'terraform plan` will detect the change
4. terraform apply will detect and confirm the change was applied
5. terraform state actually doesn't change and GCP console confirms no changes made to Budget

Important Factoids

References

• #0000

[edwardmedia]

@alanvuong could you share the debug log?

[alanvuong]

updated link to debug in initial post

pre apply: budget had no services defined in budget filter
change was to add a new service to the budget filter.

it doesn't matter if there is a service or not initially defined, you cannot add or change the service lists after a budget is created.

[github-actions]

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