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