forked from AkkomaGang/akkoma
d34fe2840d
Use a custom tesla middleware instead of adapter helper function + custom redirect middleware. This will also fix "Client died before releasing the connection" messages when the request pool is overloaded. Since the checkout is now done after passing ConcurrentLimiter. This is technically less efficient, since the connection needs to be checked in/out every time the middleware is left or entered respectively. But I don't think the nanoseconds we might lose on redirects to the same host are worth the complexity.
121 lines
3.3 KiB
Elixir
121 lines
3.3 KiB
Elixir
# Pleroma: A lightweight social networking server
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# Copyright © 2017-2020 Pleroma Authors <https://pleroma.social/>
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# SPDX-License-Identifier: AGPL-3.0-only
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defmodule Pleroma.HTTP.AdapterHelper do
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@moduledoc """
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Configure Tesla.Client with default and customized adapter options.
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"""
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@defaults [pool: :federation]
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@type proxy_type() :: :socks4 | :socks5
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@type host() :: charlist() | :inet.ip_address()
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alias Pleroma.HTTP.AdapterHelper
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require Logger
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@type proxy ::
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{Connection.host(), pos_integer()}
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| {Connection.proxy_type(), Connection.host(), pos_integer()}
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@callback options(keyword(), URI.t()) :: keyword()
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@spec format_proxy(String.t() | tuple() | nil) :: proxy() | nil
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def format_proxy(nil), do: nil
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def format_proxy(proxy_url) do
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case parse_proxy(proxy_url) do
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{:ok, host, port} -> {host, port}
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{:ok, type, host, port} -> {type, host, port}
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_ -> nil
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end
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end
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@spec maybe_add_proxy(keyword(), proxy() | nil) :: keyword()
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def maybe_add_proxy(opts, nil), do: opts
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def maybe_add_proxy(opts, proxy), do: Keyword.put_new(opts, :proxy, proxy)
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@doc """
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Merge default connection & adapter options with received ones.
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"""
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@spec options(URI.t(), keyword()) :: keyword()
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def options(%URI{} = uri, opts \\ []) do
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@defaults
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|> Keyword.merge(opts)
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|> adapter_helper().options(uri)
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end
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defp adapter, do: Application.get_env(:tesla, :adapter)
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defp adapter_helper do
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case adapter() do
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Tesla.Adapter.Gun -> AdapterHelper.Gun
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Tesla.Adapter.Hackney -> AdapterHelper.Hackney
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_ -> AdapterHelper.Default
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end
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end
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@spec parse_proxy(String.t() | tuple() | nil) ::
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{:ok, host(), pos_integer()}
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| {:ok, proxy_type(), host(), pos_integer()}
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| {:error, atom()}
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| nil
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def parse_proxy(nil), do: nil
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def parse_proxy(proxy) when is_binary(proxy) do
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with [host, port] <- String.split(proxy, ":"),
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{port, ""} <- Integer.parse(port) do
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{:ok, parse_host(host), port}
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else
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{_, _} ->
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Logger.warn("Parsing port failed #{inspect(proxy)}")
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{:error, :invalid_proxy_port}
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:error ->
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Logger.warn("Parsing port failed #{inspect(proxy)}")
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{:error, :invalid_proxy_port}
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_ ->
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Logger.warn("Parsing proxy failed #{inspect(proxy)}")
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{:error, :invalid_proxy}
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end
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end
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def parse_proxy(proxy) when is_tuple(proxy) do
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with {type, host, port} <- proxy do
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{:ok, type, parse_host(host), port}
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else
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_ ->
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Logger.warn("Parsing proxy failed #{inspect(proxy)}")
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{:error, :invalid_proxy}
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end
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end
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@spec parse_host(String.t() | atom() | charlist()) :: charlist() | :inet.ip_address()
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def parse_host(host) when is_list(host), do: host
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def parse_host(host) when is_atom(host), do: to_charlist(host)
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def parse_host(host) when is_binary(host) do
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host = to_charlist(host)
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case :inet.parse_address(host) do
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{:error, :einval} -> host
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{:ok, ip} -> ip
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end
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end
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@spec format_host(String.t()) :: charlist()
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def format_host(host) do
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host_charlist = to_charlist(host)
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case :inet.parse_address(host_charlist) do
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{:error, :einval} ->
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:idna.encode(host_charlist)
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{:ok, _ip} ->
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host_charlist
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end
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end
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end
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