exq_web_router.ex

defmodule Exq.RouterPlug do
  import Plug.Conn
  use Plug.Router

  plug :match
  plug :dispatch

  get "/queues" do
    IO.puts "YOLO"
    conn |> halt()
  end

  match _ do
    conn
  end
end

web_router.ex

defmodule ExqUi.Router do
  use Phoenix.Router

  pipeline :before do
    plug :super
    plug Exq.RouterPlug
  end

  scope "/" do
    # Use the default browser stack.
    pipe_through :browser
    get "/", ExqUi.PageController, :index, as: :pages
  end

  # Other scopes may use custom stacks.
  # scope "/api" do
  #   pipe_through :api
  # end
end