Merge pull request #332 from cegela/feat/log-user-agent-and-referer

log user agent and refrer on static mapped requests

Author: rhruiz

lib/cegela/static.ex

@@ -41,6 +41,13 @@ defmodule Cegela.Static do
   end
 
   defp log(%Plug.Conn{} = conn) do
-    Logger.info(%{static: conn.request_path})
+    ua = conn.req_headers |> Enum.filter(&match?({"user-agent", _}, &1)) |> Enum.map(&elem(&1, 1))
+    ref = conn.req_headers |> Enum.filter(&match?({"referer", _}, &1)) |> Enum.map(&elem(&1, 1))
+
+    Logger.info(%{
+      static: conn.request_path,
+      ua: ua,
+      ref: ref
+    })
   end
 end

test/cegela/static_test.exs

@@ -43,10 +43,14 @@ defmodule Cegela.StaticTest do
         capture_log([level: :info], fn ->
           :get
           |> conn("/krakem")
+          |> put_req_header("user-agent", "unit-test")
+          |> put_req_header("referer", "http://example.org/")
           |> Static.call(static_routes: %{"/krakem" => url})
         end)
 
       assert log =~ ~S(static: "/krakem")
+      assert log =~ ~S(ua: ["unit-test"])
+      assert log =~ ~S(ref: ["http://example.org/"])
     end
 
     test "does nothing to something that does not match a static" do