Resource google_cloud_run_service doesn't allow using attribute status.url

[bdubertret]

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Terraform Version

Terraform v0.12.14
+ provider.google-beta v2.20.0

Affected Resource(s)

• google_cloud_run_service

Terraform Configuration Files

variable "google_project" {
}

provider "google-beta" {
    project = var.google_project
}
resource "google_cloud_run_service" "service" {
    name = "test-echo"
    location = "europe-west1"
    provider = "google-beta"

    metadata {
        namespace = var.google_project
    }

    spec {
        containers {
            image = "eu.gcr.io/${var.google_project}/echo-server"
        }
    }
}

output "url" {
    value = google_cloud_run_service.service.status.url
}

Debug Output

https://gist.github.com/bdubertret/6a8a322be695034120d71c257e979d6d

Expected Behavior

Terraform should output the Cloud Run service url

Actual Behavior

Running terraform apply gives :

Error: Unsupported attribute

  on main.tf line 25, in output "url":
  25:     value = google_cloud_run_service.service.status.url

This value does not have any attributes.

Steps to Reproduce

1. terraform apply

References

• added some fileds to CloudRun status terraform-provider-google-beta#1071

This pull request introduces the status.url attribute in google_cloud_run_service but something seems to be missing for it to fulfill its role

[rileykarson]

Hey @bdubertret! This is actually a variant of #4091. At creation time, the API doesn't make all of the attributes available.

[bdubertret]

@rileykarson I agree there is a problem at creation time, but even once it's created, when the status attribute is populated, the output also fails, as shown here (edited to replace personal informations with [XXX]) :

$ terraform show
# google_cloud_run_service.service:
resource "google_cloud_run_service" "service" {
    id       = "test-echo"
    location = "europe-west1"
    name     = "test-echo"
    project  = "[XXX]"
    status   = [
        {
            conditions                   = [
                {
                    message = ""
                    reason  = ""
                    status  = "True"
                    type    = "Ready"
                },
                {
                    message = ""
                    reason  = ""
                    status  = "True"
                    type    = "ConfigurationsReady"
                },
                {
                    message = ""
                    reason  = ""
                    status  = "True"
                    type    = "RoutesReady"
                },
            ]
            latest_created_revision_name = "test-echo-wtjm5"
            latest_ready_revision_name   = "test-echo-wtjm5"
            observed_generation          = 1
            url                          = "https://test-echo-quz4e5hcja-ew.a.run.app"
        },
    ]

    metadata {
        annotations      = {
            "serving.knative.dev/creator"      = "[XXX]"
            "serving.knative.dev/lastModifier" = "[XXX]"
        }
        generation       = 1
        labels           = {
            "cloud.googleapis.com/location" = "europe-west1"
        }
        namespace        = "[XXX]"
        resource_version = "AAWXn/AnrsA"
        self_link        = "/apis/serving.knative.dev/v1alpha1/namespaces/[XXX]/services/test-echo"
        uid              = "8420f51b-1ea4-45d9-9a38-9b2fbfec20e8"
    }

    spec {
        container_concurrency = 0

        containers {
            args    = []
            command = []
            image   = "eu.gcr.io/[XXX]/echo-server"
        }
    }
}

So even when this information is available, terraform still considers the output value unavailable :

$ terraform apply -auto-approve

Error: Unsupported attribute

  on main.tf line 25, in output "url":
  25:     value = google_cloud_run_service.service.status.url

This value does not have any attributes.

Also, using terraform state show fails on this resource :

$ terraform state show google_cloud_run_service.service
# google_cloud_run_service.service:
# missing schema for provider "google"

I'm not very up to date as to the roles between magic modules and the terraform provider, but it seems like something is lacking, that's maybe not limited to the availability of the status attribute?

[rileykarson]

Can you try a terraform refresh prior to terraform apply? If that errors, try -target=google_cloud_run_service.service for the Cloud Run resource.

terraform state show not working is unrelated to this- hashicorp/terraform#22010 is the issue for that.

[rileykarson]

Also, do you mind trying this syntax instead? Unintuitively, nested objects in Terraform are treated as 1-element lists.

google_cloud_run_service.service.status[0].url should be the correct syntax, I believe.

[bdubertret]

@rileykarson Using google_cloud_run_service.service.status[0].url works, but only after a terraform refresh which is indeed caused by the initialization bug #4091 you mentioned. Without a refresh, the output value is empty. Thanks for the help!

[rileykarson]

Great! Sorry for your experience here. It looks like we have a PR out to poll for a ready state, so this should be fixed in 3.1.0.

[ghost]

I'm going to lock this issue because it has been closed for 30 days ⏳. This helps our maintainers find and focus on the active issues.

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