git.squeep.com Git - akkoma/blob - lib/pleroma/web/federator/federator.ex

   1 defmodule Pleroma.Web.Federator do
   2   use GenServer
   3   alias Pleroma.User
   4   alias Pleroma.Web.{WebFinger, Websub}
   5   require Logger
   6
   7   @websub Application.get_env(:pleroma, :websub)
   8   @ostatus Application.get_env(:pleroma, :ostatus)
   9   @max_jobs 10
  10
  11   def start_link do
  12     spawn(fn ->
  13       Process.sleep(1000 * 60 * 1) # 10 minutes
  14       enqueue(:refresh_subscriptions, nil)
  15     end)
  16     GenServer.start_link(__MODULE__, {:sets.new(), :queue.new()}, name: __MODULE__)
  17   end
  18
  19   def handle(:refresh_subscriptions, _) do
  20     Logger.debug("Federator running refresh subscriptions")
  21     Websub.refresh_subscriptions()
  22     spawn(fn ->
  23       Process.sleep(1000 * 60 * 60) # 60 minutes
  24       enqueue(:refresh_subscriptions, nil)
  25     end)
  26   end
  27
  28   def handle(:publish, activity) do
  29     Logger.debug(fn -> "Running publish for #{activity.data["id"]}" end)
  30     with actor when not is_nil(actor) <- User.get_cached_by_ap_id(activity.data["actor"]) do
  31       Logger.debug(fn -> "Sending #{activity.data["id"]} out via websub" end)
  32       Websub.publish(Pleroma.Web.OStatus.feed_path(actor), actor, activity)
  33
  34       {:ok, actor} = WebFinger.ensure_keys_present(actor)
  35       Logger.debug(fn -> "Sending #{activity.data["id"]} out via salmon" end)
  36       Pleroma.Web.Salmon.publish(actor, activity)
  37     end
  38   end
  39
  40   def handle(:verify_websub, websub) do
  41     Logger.debug(fn -> "Running websub verification for #{websub.id} (#{websub.topic}, #{websub.callback})" end)
  42     @websub.verify(websub)
  43   end
  44
  45   def handle(:incoming_doc, doc) do
  46     Logger.debug("Got document, trying to parse")
  47     @ostatus.handle_incoming(doc)
  48   end
  49
  50   def handle(type, payload) do
  51     Logger.debug(fn -> "Unknown task: #{type}" end)
  52     {:error, "Don't know what do do with this"}
  53   end
  54
  55   def enqueue(type, payload) do
  56     if Mix.env == :test do
  57       handle(type, payload)
  58     else
  59       GenServer.cast(__MODULE__, {:enqueue, type, payload})
  60     end
  61   end
  62
  63   def maybe_start_job(running_jobs, queue) do
  64     if (:sets.size(running_jobs) < @max_jobs) && !:queue.is_empty(queue) do
  65       {{:value, {type, payload}}, queue} = :queue.out(queue)
  66       {:ok, pid} = Task.start(fn -> handle(type, payload) end)
  67       mref = Process.monitor(pid)
  68       {:sets.add_element(mref, running_jobs), queue}
  69     else
  70       {running_jobs, queue}
  71     end
  72   end
  73
  74   def handle_cast({:enqueue, type, payload}, {running_jobs, queue}) do
  75     queue = :queue.in({type, payload}, queue)
  76     {running_jobs, queue} = maybe_start_job(running_jobs, queue)
  77     {:noreply, {running_jobs, queue}}
  78   end
  79
  80   def handle_info({:DOWN, ref, :process, _pid, _reason}, {running_jobs, queue}) do
  81     running_jobs = :sets.del_element(ref, running_jobs)
  82     {running_jobs, queue} = maybe_start_job(running_jobs, queue)
  83     {:noreply, {running_jobs, queue}}
  84   end
  85
  86   def handle_cast(m, state) do
  87     IO.inspect("Unknown: #{inspect(m)}, #{inspect(state)}")
  88     {:noreply, state}
  89   end
  90 end