Terraform-provider-google: Impossible to get filestore ip address

[matti]

resource "google_filestore_instance" "filestore" {
  provider = "google-beta"

  name = "filestore"
  tier = "STANDARD"

  zone = "europe-north1-a"

  file_shares {
    name        = "default"
    capacity_gb = 1024
  }

  networks {
    network = "default"
    modes   = ["MODE_IPV4"]
  }
}

as only "networks" is exposed and it contains:

[
{
  ip_addresses = [10.3.14.210]
  modes = [MODE_IPV4]
  network = default
  reserved_ip_range = 10.3.14.208/29
}
]

this combination of lists and maps is famously impossible to deal with terraform because of lack of support for element: element() may only be used with flat lists, this list contains elements of type map in: and does not have homogenous types. found TypeString and then TypeList

currently I'm dumping this as json and picking the ip with jq with null_provider local-exec...

[matti]

locals {
  filestore_networks_as_json = "${
    jsonencode(google_filestore_instance.filestore.networks[0])
  }"

  filestore_networks_json_split = "${
    split(
      "\"",
      local.filestore_networks_as_json
    )
  }"
}

output "filestore_ip" {
  value = "${
      local.filestore_networks_json_split[3]
    }"
}

^-- horrible workaround

[matti]

okay so this works: google_filestore_instance.filestore.networks.0.ip_addresses.0

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