add support for dashboard- and chart-level workflow links

[MisterSquishy]

e.g.

resource "lightstep_dashboard" "test_workflow_links" {
	...
	workflow_link {
		name = "test dashboard link"
		url  = "https://test.com"
	}

	chart {
		...
		workflow_link {
			name = "test chart link"
			url  = "https://testchart.com"
		}
	}
}

[ajfortunati]

what's this whole []any business? 🧐

[ajfortunati]

type casting with an unexpected shape?

[MisterSquishy]

yeah, that d.Get function is getting the list of workflow links from the terraform state -- but all we told terraform is the schema, so it doesnt have a strongly-typed representation of the data

im honestly not totally sure why we traditionally cast to []any first, and then do a subsequent cast (down here) to get the elements of the array as maps. i think maybe i dont like that pattern and im gonna break it here?? let's see how this goes...

[ajfortunati]

+1 all for seeing how it goes in the face of uncertainty 😆

[MisterSquishy]

it did not go great 😂

panic: interface conversion: interface {} is []interface {}, not []map[string]string

i guess go makes you cast in two steps??

[ajfortunati]

https://media.giphy.com/media/v1.Y2lkPTc5MGI3NjExYnVwZmUzcnZpcnN6cTl0dnJqaXhtcDY3aHZrbDZyaHE4eHA5d21kayZlcD12MV9naWZzX3NlYXJjaCZjdD1n/FzXa3cs6ux2so/giphy.gif

[MisterSquishy]

even just this doesnt work -- i guess generic arrays and maps omit type info, so their elements must be cast individually 😞