Document follow relationship updates and cleanup

lib/pleroma/following_relationship.ex

@@ -96,7 +96,7 @@ defmodule Pleroma.FollowingRelationship do
   defp after_update(state, %User{} = follower, %User{} = following) do
     with {:ok, following} <- User.update_follower_count(following),
          {:ok, follower} <- User.update_following_count(follower) do
-      Pleroma.Web.Streamer.stream("relationships:update", %{
+      Pleroma.Web.Streamer.stream("follow_relationship", %{
         state: state,
         following: following,
         follower: follower

lib/pleroma/web/streamer.ex

@@ -186,18 +186,15 @@ defmodule Pleroma.Web.Streamer do
     end)
   end
 
-  defp do_stream("relationships:update", item) do
-    text = StreamerView.render("relationships_update.json", item)
+  defp do_stream("follow_relationship", item) do
+    text = StreamerView.render("follow_relationships_update.json", item)
+    user_topic = "user:#{item.follower.id}"
 
-    [item.follower, item.following]
-    |> Enum.map(fn %{id: id} -> "user:#{id}" end)
-    |> Enum.each(fn user_topic ->
-      Logger.debug("Trying to push relationships:update to #{user_topic}\n\n")
+    Logger.debug("Trying to push follow relationship update to #{user_topic}\n\n")
 
-      Registry.dispatch(@registry, user_topic, fn list ->
-        Enum.each(list, fn {pid, _auth} ->
-          send(pid, {:text, text})
-        end)
+    Registry.dispatch(@registry, user_topic, fn list ->
+      Enum.each(list, fn {pid, _auth} ->
+        send(pid, {:text, text})
       end)
     end)
   end

lib/pleroma/web/views/streamer_view.ex

@@ -74,9 +74,9 @@ defmodule Pleroma.Web.StreamerView do
     |> Jason.encode!()
   end
 
-  def render("relationships_update.json", item) do
+  def render("follow_relationships_update.json", item) do
     %{
-      event: "pleroma:relationships_update",
+      event: "pleroma:follow_relationships_update",
       payload:
         %{
           state: item.state,