How to handle paths for exclusion within a custom Plug

good day folks !

I’m writing a small custom plug with plain elixir and I’m with a small pickle I’m not sure how to tackle. Turns I have could have a small Router that might look as follows:

defmodule MyRouter do
  use Plug.Router
  
  plug(:match)
  plug(MyCustomPlug, excluded: ["my/namespace/internal"])
  plug(:dispatch)

  get "/hello", do: send_resp(conn, 200, "world")
  forward("my/namespace", to: AnotherRouter)
end

and my custom plug as this:

defmodule MyCustomPlug do
  use Plug.Builder

  def call(%Plug.Conn{} = conn, opts) do
    excluded_paths = Keyword.get(opts, :excluded, [])
    if ~c(what should I check here to exclude?), do: halt(conn), else: conn
  end
end

as you can see, I’m enabling the plug via options to set an exclusion list, where if it’s included, just halt the pipeline.

My problem? I’m not sure what should I check to make sure the path `conn` is seeing is included in the excluded path.

am I making this more complicated than expected?