google_compute_instance_guest_attributes data source returns an error if no attributes matchquery_path

[quentinmit]

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Terraform Version & Provider Version(s)

OpenTofu v1.8.2
on linux_amd64

• provider registry.terraform.io/hashicorp/google v6.11.1

Affected Resource(s)

google_compute_instance_guest_attributes

Terraform Configuration

Replace $project and $name (and maybe us-east5-a) with a project and an instance that exist:

terraform {
  required_providers {
    google = {
      source = "registry.terraform.io/hashicorp/google"
    }
  }
}

provider "google" {
  project = "$project"
  region = "us-east5"
  zone = "us-east5-a"
}

data "google_compute_instance_guest_attributes" "attrs" {
  name = "$name"
  zone = "us-east5-a"
  query_path = "nonexistent/"
}

Debug Output

https://gist.github.com/quentinmit/8905c2de4ff0caa3fc10e58bbb5aa6d1

Expected Behavior

Like other data resources that query lists of things, the data resource should have been created successfully, and its query_value attribute should have contained an empty list.

Actual Behavior

The data resource fails to create with an error citing the wrong resource:

data.google_compute_instance_guest_attributes.attrs: Reading...

Planning failed. OpenTofu encountered an error while generating this plan.

╷
│ Error: projects/$project/zones/us-east5-a/instances/$name not found
│ 
│   with data.google_compute_instance_guest_attributes.attrs,
│   on main.tf line 15, in data "google_compute_instance_guest_attributes" "attrs":
│   15: data "google_compute_instance_guest_attributes" "attrs" {
│ 
╵

Note that the error message indicates that the instance does not exist. The instance does exist; there just aren't any guest attributes in the queried namespace. If you change the query to hostkeys/ (for an instance that has hostkeys attributes) it works correctly.

Steps to reproduce

1. tofu plan

Important Factoids

No response

References

No response

b/379900319

[ggtisc]

Confirmed issue!

Even if a metadata enable-guest-attributes is used on a google_compute_instance it is not possible to use any different value for google_compute_instance_guest_attributes.query_path

resource "google_compute_instance" "c_instance_20346" {
# some code

  metadata = {
    enable-guest-attributes = "TRUE"
  }
}

[github-actions]

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