Add option to modify HTTP pool size

[akkoma] / lib / pleroma / http / adapter_helper.ex

diff --git a/lib/pleroma/http/adapter_helper.ex b/lib/pleroma/http/adapter_helper.ex
index 2c13666ecebff86375d4555a37d7fe13a9ac628f..e5da3ffa8f03e9578f18152b5f238b1a81db91ab 100644 (file)
--- a/lib/pleroma/http/adapter_helper.ex
+++ b/lib/pleroma/http/adapter_helper.ex
@@ -1,41 +1,153 @@
 # Pleroma: A lightweight social networking server
-# Copyright © 2017-2020 Pleroma Authors <https://pleroma.social/>
+# Copyright © 2017-2021 Pleroma Authors <https://pleroma.social/>
 # SPDX-License-Identifier: AGPL-3.0-only
 
 defmodule Pleroma.HTTP.AdapterHelper do
-  alias Pleroma.HTTP.Connection
+  @moduledoc """
+  Configure Tesla.Client with default and customized adapter options.
+  """
+  @defaults [name: MyFinch, pool_timeout: 5_000, receive_timeout: 5_000]
 
-  @type proxy ::
-          {Connection.host(), pos_integer()}
-          | {Connection.proxy_type(), pos_integer()}
+  @type proxy_type() :: :socks4 | :socks5
+  @type host() :: charlist() | :inet.ip_address()
 
-  @callback options(keyword(), URI.t()) :: keyword()
-  @callback after_request(keyword()) :: :ok
-
-  @spec options(keyword(), URI.t()) :: keyword()
-  def options(opts, _uri) do
-    proxy = Pleroma.Config.get([:http, :proxy_url], nil)
-    maybe_add_proxy(opts, format_proxy(proxy))
-  end
+  alias Pleroma.HTTP.AdapterHelper
+  require Logger
 
-  @spec maybe_get_conn(URI.t(), keyword()) :: keyword()
-  def maybe_get_conn(_uri, opts), do: opts
+  @type proxy :: {Connection.proxy_type(), Connection.host(), pos_integer(), list()}
 
-  @spec after_request(keyword()) :: :ok
-  def after_request(_opts), do: :ok
+  @callback options(keyword(), URI.t()) :: keyword()
 
   @spec format_proxy(String.t() | tuple() | nil) :: proxy() | nil
   def format_proxy(nil), do: nil
 
   def format_proxy(proxy_url) do
-    case Connection.parse_proxy(proxy_url) do
-      {:ok, host, port} -> {host, port}
-      {:ok, type, host, port} -> {type, host, port}
+    case parse_proxy(proxy_url) do
+      {:ok, type, host, port} -> {type, host, port, []}
       _ -> nil
     end
   end
 
   @spec maybe_add_proxy(keyword(), proxy() | nil) :: keyword()
   def maybe_add_proxy(opts, nil), do: opts
-  def maybe_add_proxy(opts, proxy), do: Keyword.put_new(opts, :proxy, proxy)
+
+  def maybe_add_proxy(opts, proxy) do
+    Keyword.put(opts, :proxy, proxy)
+  end
+
+  def maybe_add_proxy_pool(opts, nil), do: opts
+
+  def maybe_add_proxy_pool(opts, proxy) do
+    Logger.info("Using HTTP Proxy: #{inspect(proxy)}")
+
+    opts
+    |> maybe_add_pools()
+    |> maybe_add_default_pool()
+    |> maybe_add_conn_opts()
+    |> put_in([:pools, :default, :conn_opts, :proxy], proxy)
+  end
+
+  def add_pool_size(opts, pool_size) do
+    opts
+    |> maybe_add_pools()
+    |> maybe_add_default_pool()
+    |> put_in([:pools, :default, :size], pool_size)
+  end
+
+  defp maybe_add_pools(opts) do
+    if Keyword.has_key?(opts, :pools) do
+      opts
+    else
+      Keyword.put(opts, :pools, %{})
+    end
+  end
+
+  defp maybe_add_default_pool(opts) do
+    pools = Keyword.get(opts, :pools)
+
+    if Map.has_key?(pools, :default) do
+      opts
+    else
+      put_in(opts, [:pools, :default], [])
+    end
+  end
+
+  defp maybe_add_conn_opts(opts) do
+    conn_opts = get_in(opts, [:pools, :default, :conn_opts])
+
+    unless is_nil(conn_opts) do
+      opts
+    else
+      put_in(opts, [:pools, :default, :conn_opts], [])
+    end
+  end
+
+  @doc """
+  Merge default connection & adapter options with received ones.
+  """
+
+  @spec options(URI.t(), keyword()) :: keyword()
+  def options(%URI{} = uri, opts \\ []) do
+    @defaults
+    |> Keyword.merge(opts)
+    |> AdapterHelper.Default.options(uri)
+  end
+
+  defp proxy_type("http"), do: {:ok, :http}
+  defp proxy_type("https"), do: {:ok, :https}
+  defp proxy_type(_), do: {:error, :unknown}
+
+  @spec parse_proxy(String.t() | tuple() | nil) ::
+          {:ok, proxy_type(), host(), pos_integer()}
+          | {:error, atom()}
+          | nil
+  def parse_proxy(nil), do: nil
+  def parse_proxy(""), do: nil
+
+  def parse_proxy(proxy) when is_binary(proxy) do
+    with %URI{} = uri <- URI.parse(proxy),
+         {:ok, type} <- proxy_type(uri.scheme) do
+      {:ok, type, uri.host, uri.port}
+    else
+      e ->
+        Logger.warn("Parsing proxy failed #{inspect(proxy)}, #{inspect(e)}")
+        {:error, :invalid_proxy}
+    end
+  end
+
+  def parse_proxy(proxy) when is_tuple(proxy) do
+    with {type, host, port} <- proxy do
+      {:ok, type, host, port}
+    else
+      _ ->
+        Logger.warn("Parsing proxy failed #{inspect(proxy)}")
+        {:error, :invalid_proxy}
+    end
+  end
+
+  @spec parse_host(String.t() | atom() | charlist()) :: charlist() | :inet.ip_address()
+  def parse_host(host) when is_list(host), do: host
+  def parse_host(host) when is_atom(host), do: to_charlist(host)
+
+  def parse_host(host) when is_binary(host) do
+    host = to_charlist(host)
+
+    case :inet.parse_address(host) do
+      {:error, :einval} -> host
+      {:ok, ip} -> ip
+    end
+  end
+
+  @spec format_host(String.t()) :: charlist()
+  def format_host(host) do
+    host_charlist = to_charlist(host)
+
+    case :inet.parse_address(host_charlist) do
+      {:error, :einval} ->
+        :idna.encode(host_charlist)
+
+      {:ok, _ip} ->
+        host_charlist
+    end
+  end
 end