50 lines
1.4 KiB
Elixir
50 lines
1.4 KiB
Elixir
# Pleroma: A lightweight social networking server
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# Copyright © 2020 Pleroma Authors <https://pleroma.social/>
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# SPDX-License-Identifier: AGPL-3.0-only
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defmodule Pleroma.Tesla.Middleware.ConnectionPool do
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@moduledoc """
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Middleware to get/release connections from `Pleroma.Gun.ConnectionPool`
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"""
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@behaviour Tesla.Middleware
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alias Pleroma.Gun.ConnectionPool
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@impl Tesla.Middleware
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def call(%Tesla.Env{url: url, opts: opts} = env, next, _) do
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uri = URI.parse(url)
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# Avoid leaking connections when the middleware is called twice
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# with body_as: :chunks. We assume only the middleware can set
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# opts[:adapter][:conn]
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if opts[:adapter][:conn] do
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ConnectionPool.release_conn(opts[:adapter][:conn])
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end
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case ConnectionPool.get_conn(uri, opts[:adapter]) do
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{:ok, conn_pid} ->
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adapter_opts = Keyword.merge(opts[:adapter], conn: conn_pid, close_conn: false)
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opts = Keyword.put(opts, :adapter, adapter_opts)
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env = %{env | opts: opts}
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case Tesla.run(env, next) do
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{:ok, env} ->
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unless opts[:adapter][:body_as] == :chunks do
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ConnectionPool.release_conn(conn_pid)
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{_, res} = pop_in(env.opts[:adapter][:conn])
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{:ok, res}
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else
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{:ok, env}
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end
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err ->
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ConnectionPool.release_conn(conn_pid)
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err
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end
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err ->
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err
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end
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end
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end
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