From bf3492ceb31f6332a4c58feba271e3755fabe25a Mon Sep 17 00:00:00 2001 From: rinpatch Date: Sat, 6 Jun 2020 17:53:39 +0300 Subject: [PATCH] Connection Pool: add tests --- test/gun/conneciton_pool_test.exs | 101 ++++++++++++++++++++++++++++++ 1 file changed, 101 insertions(+) create mode 100644 test/gun/conneciton_pool_test.exs diff --git a/test/gun/conneciton_pool_test.exs b/test/gun/conneciton_pool_test.exs new file mode 100644 index 000000000..aea908fac --- /dev/null +++ b/test/gun/conneciton_pool_test.exs @@ -0,0 +1,101 @@ +# Pleroma: A lightweight social networking server +# Copyright © 2017-2020 Pleroma Authors +# SPDX-License-Identifier: AGPL-3.0-only + +defmodule Pleroma.Gun.ConnectionPoolTest do + use Pleroma.DataCase + + import Mox + import ExUnit.CaptureLog + alias Pleroma.Config + alias Pleroma.Gun.ConnectionPool + + defp gun_mock(_) do + Pleroma.GunMock + |> stub(:open, fn _, _, _ -> Task.start_link(fn -> Process.sleep(100) end) end) + |> stub(:await_up, fn _, _ -> {:ok, :http} end) + |> stub(:set_owner, fn _, _ -> :ok end) + + :ok + end + + setup :set_mox_from_context + setup :gun_mock + + test "gives the same connection to 2 concurrent requests" do + Enum.map( + [ + "http://www.korean-books.com.kp/KBMbooks/en/periodic/pictorial/20200530163914.pdf", + "http://www.korean-books.com.kp/KBMbooks/en/periodic/pictorial/20200528183427.pdf" + ], + fn uri -> + uri = URI.parse(uri) + task_parent = self() + + Task.start_link(fn -> + {:ok, conn} = ConnectionPool.get_conn(uri, []) + ConnectionPool.release_conn(conn) + send(task_parent, conn) + end) + end + ) + + [pid, pid] = + for _ <- 1..2 do + receive do + pid -> pid + end + end + end + + test "connection limit is respected with concurrent requests" do + clear_config([:connections_pool, :max_connections]) do + Config.put([:connections_pool, :max_connections], 1) + # The supervisor needs a reboot to apply the new config setting + Process.exit(Process.whereis(Pleroma.Gun.ConnectionPool.WorkerSupervisor), :kill) + + on_exit(fn -> + Process.exit(Process.whereis(Pleroma.Gun.ConnectionPool.WorkerSupervisor), :kill) + end) + end + + capture_log(fn -> + Enum.map( + [ + "https://ninenines.eu/", + "https://youtu.be/PFGwMiDJKNY" + ], + fn uri -> + uri = URI.parse(uri) + task_parent = self() + + Task.start_link(fn -> + result = ConnectionPool.get_conn(uri, []) + # Sleep so that we don't end up with a situation, + # where request from the second process gets processed + # only after the first process already released the connection + Process.sleep(50) + + case result do + {:ok, pid} -> + ConnectionPool.release_conn(pid) + + _ -> + nil + end + + send(task_parent, result) + end) + end + ) + + [{:error, :pool_full}, {:ok, _pid}] = + for _ <- 1..2 do + receive do + result -> result + end + end + |> Enum.sort() + end) + end +end