function.ObjectParameter always requires all arguments

[jason-johnson]

Module version

v1.6.1

Relevant provider source code

function.ObjectParameter{
				Name:           "args",
				Description:    "Extra variables for use in format.",
				AllowNullValue: true,
				AttributeTypes: map[string]attr.Type{
					"location":    types.StringType,
					"extra_tokens": types.MapType{ElemType: types.StringType},
				},
			},

Terraform Configuration Files

provider::namep::custom_name("test", "azurerm_resource_group", { location = "westeurope" })

Expected Behavior

extra_tokens should be null since it wasn't passed

Actual Behavior

The function call fails and forces the user to explicitly pass extra_tokens = null

Steps to Reproduce

Create a provider function
Have at least one parameter be an ObjectParameter
Try to call the function without explicitly passing every argument

[austinvalle]

Hey there @jason-johnson 👋🏻 , thanks for reporting this and sorry you're running into this issue.

I'm able to verify the bug, but I wanted to add that there will also likely need to be some design decisions and enhancements made here by the maintainers to fully enable this behavior.

Before functions, all object implementations had accompanying schema information available to determine which object properties are allowed to be null. Since functions don't have a similar concept to configurability, we'll likely need to expose some method of defining optional attributes for an object, i.e. an object type constraint.

Not an ideal workaround, but when #931 is merged and released, provider developers will be able to define a DynamicParameter, which will be dynamically typed, equivalent to the any constraint. This would allow a provider function to accept any object type (unfortunately, also every other type), and validate manually it has the required information to run the function.