Merge branch 'gun/snooze' into 'develop'

Gun: Publisher job behavior improvement

See merge request pleroma/pleroma!4202

changelog.d/oban_gun_snooze.change

@@ -0,0 +1 @@
+Publisher behavior improvement when snoozing Oban jobs due to Gun connection pool contention.

lib/pleroma/web/activity_pub/publisher.ex

@@ -143,9 +143,13 @@ def publish_one(%{inbox: inbox, activity_id: activity_id} = params) do
           _ -> {:error, e}
         end
 
+      {:error, {:already_started, _}} ->
+        Logger.debug("Publisher snoozing worker job due worker :already_started race condition")
+        connection_pool_snooze()
+
       {:error, :pool_full} ->
         Logger.debug("Publisher snoozing worker job due to full connection pool")
-        {:snooze, 30}
+        connection_pool_snooze()
 
       e ->
         unless params[:unreachable_since], do: Instances.set_unreachable(inbox)
@@ -155,6 +159,8 @@ def publish_one(%{inbox: inbox, activity_id: activity_id} = params) do
     end
   end
 
+  defp connection_pool_snooze, do: {:snooze, 3}
+
   defp signature_host(%URI{port: port, scheme: scheme, host: host}) do
     if port == URI.default_port(scheme) do
       host