Allow to skip cache in Cache plug

Ref: fix-local-public

lib/pleroma/web/plugs/cache.ex

@@ -98,10 +98,15 @@ defmodule Pleroma.Web.Plugs.Cache do
         content_type = content_type(conn)
 
         conn =
-          unless opts[:tracking_fun] do
+          cond do
+            Map.get(conn.assigns, :skip_cache, false) ->
+              conn
+
+            !opts[:tracking_fun] ->
               @cachex.put(:web_resp_cache, key, {content_type, body}, ttl: ttl)
               conn
-          else
+
+            true ->
               tracking_fun_data = Map.get(conn.assigns, :tracking_fun_data, nil)
               @cachex.put(:web_resp_cache, key, {content_type, body, tracking_fun_data}, ttl: ttl)
 

test/pleroma/web/plugs/cache_test.exs

@@ -179,4 +179,22 @@ defmodule Pleroma.Web.Plugs.CacheTest do
              |> send_resp(:im_a_teapot, "🥤")
              |> sent_resp()
   end
+
+  test "ignores if skip_cache is assigned" do
+    assert @miss_resp ==
+             conn(:get, "/")
+             |> assign(:skip_cache, true)
+             |> Cache.call(%{query_params: false, ttl: nil})
+             |> put_resp_content_type("cofe/hot")
+             |> send_resp(:ok, "cofe")
+             |> sent_resp()
+
+    assert @miss_resp ==
+             conn(:get, "/")
+             |> assign(:skip_cache, true)
+             |> Cache.call(%{query_params: false, ttl: nil})
+             |> put_resp_content_type("cofe/hot")
+             |> send_resp(:ok, "cofe")
+             |> sent_resp()
+  end
 end