Allow setting of api-version from resource request (C#?)

[sloncho]

Hello!

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Issue details

ATM there is no way to use azure custom resource providers in order to create custom azure resources. Not a "pulumi" custom resource.

Explanation: "azure custom resource provider" is in a preview, and the API version is "2018-09-01-preview". The creation/registration of the custom provider resource works as expected.

The problem appears, when we try to use that custom provider. We are using "azure resource" in order to do that. It appears that the way pulumi works, it builds the azure rest call/url by using the api-version of the "custom resource" class - and as such it produces the error:

azure-native:resources:Resource service-principal creating error: cannot check existence of resource '/subscriptions/xxxxxx/resourcegroups/xxxxxx/providers/Microsoft.CustomProviders%2Fresourceproviders/outCustomProvider/mycustomresourcetype/myresourcename': status code 400, {"error":{"code":"NoRegisteredProviderFound","message":"No registered resource provider found for location 'zzzz' and API version '2019-05-01' for type 'resourceProviders'. The supported api-versions are '2018-09-01-preview'.

Technically, the error is expected - as the "2019-05-01" is the azure api version of the "Resource" class, but the api call should carry the api-version of the "resource provider" - "2018-09-01-preview".

There is no "2018-09-01-preview" api schema for "Resource", so no way to use that specific implementation.

A possible solutions:

1. Add "2018-09-01-preview" as possible alias to "Resource" class - maybe the easiest?
2. Allow somehow to specify "api-version" on the resource
3. Allow somehow to specify "api-version" using the customoptions.Provider
4. Something else?

We are using C#, but maybe the problem exists with other languages too.

I'm willing to contribute, but I'll need guidance where to look for extension points.

Affected area/feature

AzureNative

[guineveresaenger]

Hi @sloncho - thank you for reporting this issue. I'll get back to you here on what we can do.

[guineveresaenger]

Hi @sloncho - I unfortunately don't have a super exciting update here. We'll need some time to investigate, as there's unfortunately currently no quick fix for this. We're tracking this as an enhancement internally.

[mikhailshilkov]

Duplicate of #2467, we'll track there