raw body plug parser

endpoint.ex

plug Plug.Parsers,
  parsers: [ZB.Parsers.RAWBODY, :urlencoded, :multipart, :json],
  pass: ["*/*"],
  json_decoder: Poison

raw_body.ex

defmodule ZB.Parsers.RAWBODY do
  @behaviour Plug.Parsers
  alias Plug.Conn

  def parse(%{request_path: "/v2/subscriptions/stripe-webhook"} = conn, _type, _subtype, _headers, opts) do
    do_parse(conn, opts)
  end
  def parse(conn, _type, _subtype, _headers, _opts) do
    {:next, conn}
  end

  defp do_parse(conn, opts) do
    case Conn.read_body(conn, opts) do
      {:ok, body, conn} ->
        {:ok, %{raw: body}, conn}
      {:more, _data, conn} ->
        {:error, :too_large, conn}
    end
  end

end