metal_project payment_method_id UUID validation prevents refresh

[displague]

It is possible for the payment_method to not be included in the project API response, even when payment_method is included. This is due to some billing relationship or token access to billing information.

When payment info is not included in the API response, the PaymentMethod object has zero values, including the Href and ID. This results in UUID validation by Terraform.

During refresh:

invalid value for payment_method_id (must be a valid UUID)

Packngo should reflect that Project PaymentMethod can be null. (it may be omitted by the API)
Terraform validation should allow this field to be empty.
https://github.com/equinix/terraform-provider-metal/blob/main/metal/resource_metal_project.go#L59

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Debug Output

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Expected Behavior

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Actual Behavior

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Steps to Reproduce

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1. terraform apply

Important Factoids

Are there anything atypical about your accounts that we should know?

References

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• #1234

[displague]

hashicorp/terraform-provider-aws#13943 offers a validation path using validation.Any and validation.ExactlyOneOf (which does not seem to be defined)

[t0mk]

@displague I didn't manage to invoke the error but I think I see the problem. The PaymentMethod field is not a pointer so it's filled with empty struct on API response deserialization.

I guess we will need to do sth like

if len(proj.PaymentMethod.URL) != 0 
  d.Set("payment_method_id", path.Base(proj.PaymentMethod.URL))
}

... i.e. skip the assignment to the provider attribute unless the payment method URL is set. If it's not set, I think the format check won't trigger. I can't test it, the acceptance test doesn't seem to run the ValidateFunc if I assign empty string to the payment_method_id attribute.

[displague]

Fix released in v3.2.1