forked from AkkomaGang/akkoma
129 lines
4.6 KiB
Elixir
129 lines
4.6 KiB
Elixir
defmodule Pleroma.Web.Federator do
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use GenServer
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alias Pleroma.User
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alias Pleroma.Web.{WebFinger, Websub}
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require Logger
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@websub Application.get_env(:pleroma, :websub)
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@ostatus Application.get_env(:pleroma, :ostatus)
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@httpoison Application.get_env(:pleroma, :httpoison)
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@max_jobs 10
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def start_link do
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spawn(fn ->
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Process.sleep(1000 * 60 * 1) # 1 minute
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enqueue(:refresh_subscriptions, nil)
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end)
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GenServer.start_link(__MODULE__, %{
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in: {:sets.new(), :queue.new()},
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out: {:sets.new(), :queue.new()}
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}, name: __MODULE__)
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end
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def handle(:refresh_subscriptions, _) do
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Logger.debug("Federator running refresh subscriptions")
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Websub.refresh_subscriptions()
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spawn(fn ->
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Process.sleep(1000 * 60 * 60 * 6) # 6 hours
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enqueue(:refresh_subscriptions, nil)
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end)
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end
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def handle(:request_subscription, websub) do
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Logger.debug("Refreshing #{websub.topic}")
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with {:ok, websub } <- Websub.request_subscription(websub) do
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Logger.debug("Successfully refreshed #{websub.topic}")
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else
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_e -> Logger.debug("Couldn't refresh #{websub.topic}")
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end
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end
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def handle(:publish, activity) do
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Logger.debug(fn -> "Running publish for #{activity.data["id"]}" end)
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with actor when not is_nil(actor) <- User.get_cached_by_ap_id(activity.data["actor"]) do
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Logger.debug(fn -> "Sending #{activity.data["id"]} out via websub" end)
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Websub.publish(Pleroma.Web.OStatus.feed_path(actor), actor, activity)
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{:ok, actor} = WebFinger.ensure_keys_present(actor)
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Logger.debug(fn -> "Sending #{activity.data["id"]} out via salmon" end)
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Pleroma.Web.Salmon.publish(actor, activity)
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end
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end
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def handle(:verify_websub, websub) do
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Logger.debug(fn -> "Running websub verification for #{websub.id} (#{websub.topic}, #{websub.callback})" end)
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@websub.verify(websub)
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end
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def handle(:incoming_doc, doc) do
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Logger.debug("Got document, trying to parse")
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@ostatus.handle_incoming(doc)
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end
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def handle(:publish_single_websub, %{xml: xml, topic: topic, callback: callback, secret: secret}) do
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signature = @websub.sign(secret || "", xml)
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Logger.debug(fn -> "Pushing #{topic} to #{callback}" end)
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with {:ok, %{status_code: code}} <- @httpoison.post(callback, xml, [
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{"Content-Type", "application/atom+xml"},
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{"X-Hub-Signature", "sha1=#{signature}"}
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], timeout: 10000, recv_timeout: 20000) do
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Logger.debug(fn -> "Pushed to #{callback}, code #{code}" end)
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else e ->
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Logger.debug(fn -> "Couldn't push to #{callback}, #{inspect(e)}" end)
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end
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end
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def handle(type, _) do
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Logger.debug(fn -> "Unknown task: #{type}" end)
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{:error, "Don't know what do do with this"}
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end
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def enqueue(type, payload) do
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if Mix.env == :test do
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handle(type, payload)
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else
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GenServer.cast(__MODULE__, {:enqueue, type, payload})
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end
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end
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def maybe_start_job(running_jobs, queue) do
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if (:sets.size(running_jobs) < @max_jobs) && !:queue.is_empty(queue) do
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{{:value, {type, payload}}, queue} = :queue.out(queue)
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{:ok, pid} = Task.start(fn -> handle(type, payload) end)
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mref = Process.monitor(pid)
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{:sets.add_element(mref, running_jobs), queue}
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else
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{running_jobs, queue}
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end
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end
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def handle_cast({:enqueue, type, payload}, state) when type in [:incoming_doc] do
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%{in: {i_running_jobs, i_queue}, out: {o_running_jobs, o_queue}} = state
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i_queue = :queue.in({type, payload}, i_queue)
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{i_running_jobs, i_queue} = maybe_start_job(i_running_jobs, i_queue)
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{:noreply, %{in: {i_running_jobs, i_queue}, out: {o_running_jobs, o_queue}}}
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end
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def handle_cast({:enqueue, type, payload}, state) do
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%{in: {i_running_jobs, i_queue}, out: {o_running_jobs, o_queue}} = state
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o_queue = :queue.in({type, payload}, o_queue)
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{o_running_jobs, o_queue} = maybe_start_job(o_running_jobs, o_queue)
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{:noreply, %{in: {i_running_jobs, i_queue}, out: {o_running_jobs, o_queue}}}
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end
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def handle_cast(m, state) do
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IO.inspect("Unknown: #{inspect(m)}, #{inspect(state)}")
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{:noreply, state}
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end
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def handle_info({:DOWN, ref, :process, _pid, _reason}, state) do
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%{in: {i_running_jobs, i_queue}, out: {o_running_jobs, o_queue}} = state
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i_running_jobs = :sets.del_element(ref, i_running_jobs)
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o_running_jobs = :sets.del_element(ref, o_running_jobs)
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{i_running_jobs, i_queue} = maybe_start_job(i_running_jobs, i_queue)
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{o_running_jobs, o_queue} = maybe_start_job(o_running_jobs, o_queue)
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{:noreply, %{in: {i_running_jobs, i_queue}, out: {o_running_jobs, o_queue}}}
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end
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end
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