proxy_example.ex

proxy_example.ex

defmodule EyelevelEx.Proxy.Application do
  @moduledoc false
  use Application

  def start(_type, _args) do
    import Supervisor.Spec, warn: false

    opts = [strategy: :one_for_one, name: EyelevelEx.Proxy.Supervisor]
    Supervisor.start_link(children(Mix.env()), opts)
  end

  def children(:test), do: []

  def children(_) do
    [
      {
        Plug.Cowboy,
        scheme: :http,
        plug: EyelevelEx.Proxy.Plug,
        port: port(),
        dispatch: [{:_, [phoenix_live_reload(), websocket(), master_proxy()]}]
      }
    ]
  end

  def port do
    (System.get_env("PORT") || "4000") |> String.to_integer()
  end

  def phoenix_live_reload do
    {
      "/phoenix/live_reload/socket/websocket",
      Phoenix.Endpoint.Cowboy2Handler,
      {
        Phoenix.Endpoint.Cowboy2Adapter,
        {EyelevelExWeb.Endpoint, Phoenix.LiveReloader.Socket, :websocket}
      }
    }
  end

  def websocket do
    {
      "/cable/websocket",
      Phoenix.Endpoint.Cowboy2Handler,
      {
        Phoenix.Endpoint.Cowboy2Adapter,
        {EyelevelExWeb.Endpoint, EyelevelExWeb.UserSocket, :websocket}
      }
    }
  end

  def master_proxy do
    {:_, Plug.Cowboy.Handler, {EyelevelEx.Proxy.Plug, []}}
  end
end