From 0ada3fe823a3c2e6c5835431bdacfbdb8b3d02a7 Mon Sep 17 00:00:00 2001
From: Alex Gleason <alex@alexgleason.me>
Date: Fri, 21 May 2021 12:31:28 -0500
Subject: [PATCH] Gun: use runtime deps in ConnectionPool Speed up
 recompilation time by breaking compile-time cycles

---
 lib/pleroma/gun/connection_pool/reclaimer.ex |  6 +++---
 lib/pleroma/gun/connection_pool/worker.ex    | 10 +++++-----
 lib/pleroma/http/adapter_helper/gun.ex       |  4 ++--
 3 files changed, 10 insertions(+), 10 deletions(-)

diff --git a/lib/pleroma/gun/connection_pool/reclaimer.ex b/lib/pleroma/gun/connection_pool/reclaimer.ex
index c37b62bf2..4c643d7cb 100644
--- a/lib/pleroma/gun/connection_pool/reclaimer.ex
+++ b/lib/pleroma/gun/connection_pool/reclaimer.ex
@@ -5,11 +5,11 @@
 defmodule Pleroma.Gun.ConnectionPool.Reclaimer do
   use GenServer, restart: :temporary
 
-  @registry Pleroma.Gun.ConnectionPool
+  defp registry, do: Pleroma.Gun.ConnectionPool
 
   def start_monitor do
     pid =
-      case :gen_server.start(__MODULE__, [], name: {:via, Registry, {@registry, "reclaimer"}}) do
+      case :gen_server.start(__MODULE__, [], name: {:via, Registry, {registry(), "reclaimer"}}) do
         {:ok, pid} ->
           pid
 
@@ -46,7 +46,7 @@ def handle_continue(:reclaim, _) do
     #   {worker_pid, crf, last_reference} end)
     unused_conns =
       Registry.select(
-        @registry,
+        registry(),
         [
           {{:_, :"$1", {:_, :"$2", :"$3", :"$4"}}, [{:==, :"$2", []}], [{{:"$1", :"$3", :"$4"}}]}
         ]
diff --git a/lib/pleroma/gun/connection_pool/worker.ex b/lib/pleroma/gun/connection_pool/worker.ex
index 02bfff274..a3fa75386 100644
--- a/lib/pleroma/gun/connection_pool/worker.ex
+++ b/lib/pleroma/gun/connection_pool/worker.ex
@@ -6,10 +6,10 @@ defmodule Pleroma.Gun.ConnectionPool.Worker do
   alias Pleroma.Gun
   use GenServer, restart: :temporary
 
-  @registry Pleroma.Gun.ConnectionPool
+  defp registry, do: Pleroma.Gun.ConnectionPool
 
   def start_link([key | _] = opts) do
-    GenServer.start_link(__MODULE__, opts, name: {:via, Registry, {@registry, key}})
+    GenServer.start_link(__MODULE__, opts, name: {:via, Registry, {registry(), key}})
   end
 
   @impl true
@@ -24,7 +24,7 @@ def handle_continue({:connect, [key, uri, opts, client_pid]}, _) do
       time = :erlang.monotonic_time(:millisecond)
 
       {_, _} =
-        Registry.update_value(@registry, key, fn _ ->
+        Registry.update_value(registry(), key, fn _ ->
           {conn_pid, [client_pid], 1, time}
         end)
 
@@ -65,7 +65,7 @@ def handle_call(:add_client, {client_pid, _}, %{key: key, protocol: protocol} =
     time = :erlang.monotonic_time(:millisecond)
 
     {{conn_pid, used_by, _, _}, _} =
-      Registry.update_value(@registry, key, fn {conn_pid, used_by, crf, last_reference} ->
+      Registry.update_value(registry(), key, fn {conn_pid, used_by, crf, last_reference} ->
         {conn_pid, [client_pid | used_by], crf(time - last_reference, crf), time}
       end)
 
@@ -92,7 +92,7 @@ def handle_call(:add_client, {client_pid, _}, %{key: key, protocol: protocol} =
   @impl true
   def handle_call(:remove_client, {client_pid, _}, %{key: key} = state) do
     {{_conn_pid, used_by, _crf, _last_reference}, _} =
-      Registry.update_value(@registry, key, fn {conn_pid, used_by, crf, last_reference} ->
+      Registry.update_value(registry(), key, fn {conn_pid, used_by, crf, last_reference} ->
         {conn_pid, List.delete(used_by, client_pid), crf, last_reference}
       end)
 
diff --git a/lib/pleroma/http/adapter_helper/gun.ex b/lib/pleroma/http/adapter_helper/gun.ex
index 82c7fd654..251539f34 100644
--- a/lib/pleroma/http/adapter_helper/gun.ex
+++ b/lib/pleroma/http/adapter_helper/gun.ex
@@ -54,8 +54,8 @@ def pool_timeout(pool) do
     Config.get([:pools, pool, :recv_timeout], default)
   end
 
-  @prefix Pleroma.Gun.ConnectionPool
   def limiter_setup do
+    prefix = Pleroma.Gun.ConnectionPool
     wait = Config.get([:connections_pool, :connection_acquisition_wait])
     retries = Config.get([:connections_pool, :connection_acquisition_retries])
 
@@ -66,7 +66,7 @@ def limiter_setup do
       max_waiting = Keyword.get(opts, :max_waiting, 10)
 
       result =
-        ConcurrentLimiter.new(:"#{@prefix}.#{name}", max_running, max_waiting,
+        ConcurrentLimiter.new(:"#{prefix}.#{name}", max_running, max_waiting,
           wait: wait,
           max_retries: retries
         )