71 lines
1.9 KiB
Elixir
71 lines
1.9 KiB
Elixir
# Pleroma: A lightweight social networking server
|
|
# Copyright © 2017-2021 Pleroma Authors <https://pleroma.social/>
|
|
# SPDX-License-Identifier: AGPL-3.0-only
|
|
|
|
defmodule Pleroma.Web.ActivityPub.MRF.MediaProxyWarmingPolicy do
|
|
@moduledoc "Preloads any attachments in the MediaProxy cache by prefetching them"
|
|
@behaviour Pleroma.Web.ActivityPub.MRF.Policy
|
|
|
|
alias Pleroma.HTTP
|
|
alias Pleroma.Web.MediaProxy
|
|
|
|
require Logger
|
|
|
|
@adapter_options [
|
|
recv_timeout: 10_000
|
|
]
|
|
|
|
defp prefetch(url) do
|
|
# Fetching only proxiable resources
|
|
if MediaProxy.enabled?() and MediaProxy.url_proxiable?(url) do
|
|
# If preview proxy is enabled, it'll also hit media proxy (so we're caching both requests)
|
|
prefetch_url = MediaProxy.preview_url(url)
|
|
|
|
Logger.debug("Prefetching #{inspect(url)} as #{inspect(prefetch_url)}")
|
|
|
|
if Pleroma.Config.get(:env) == :test do
|
|
fetch(prefetch_url)
|
|
else
|
|
ConcurrentLimiter.limit(__MODULE__, fn ->
|
|
Task.start(fn -> fetch(prefetch_url) end)
|
|
end)
|
|
end
|
|
end
|
|
end
|
|
|
|
defp fetch(url), do: HTTP.get(url, [], @adapter_options)
|
|
|
|
defp preload(%{"object" => %{"attachment" => attachments}} = _message) do
|
|
Enum.each(attachments, fn
|
|
%{"url" => url} when is_list(url) ->
|
|
url
|
|
|> Enum.each(fn
|
|
%{"href" => href} ->
|
|
prefetch(href)
|
|
|
|
x ->
|
|
Logger.debug("Unhandled attachment URL object #{inspect(x)}")
|
|
end)
|
|
|
|
x ->
|
|
Logger.debug("Unhandled attachment #{inspect(x)}")
|
|
end)
|
|
end
|
|
|
|
@impl true
|
|
def filter(
|
|
%{"type" => "Create", "object" => %{"attachment" => attachments} = _object} = message
|
|
)
|
|
when is_list(attachments) and length(attachments) > 0 do
|
|
preload(message)
|
|
|
|
{:ok, message}
|
|
end
|
|
|
|
@impl true
|
|
def filter(message), do: {:ok, message}
|
|
|
|
@impl true
|
|
def describe, do: {:ok, %{}}
|
|
end
|