[#1505] Restricted max thread distance for fetching replies on incoming federation...

[akkoma] / lib / pleroma / web / federator / federator.ex

diff --git a/lib/pleroma/web/federator/federator.ex b/lib/pleroma/web/federator/federator.ex
index d85fe824fd8f7cd46dca214083ef0baef6e4a2f6..013fb5b70d29e349ef8bd7b484076a9df10b7d3e 100644 (file)
--- a/lib/pleroma/web/federator/federator.ex
+++ b/lib/pleroma/web/federator/federator.ex
@@ -10,28 +10,24 @@ defmodule Pleroma.Web.Federator do
   alias Pleroma.Web.ActivityPub.Transmogrifier
   alias Pleroma.Web.ActivityPub.Utils
   alias Pleroma.Web.Federator.Publisher
-  alias Pleroma.Web.OStatus
-  alias Pleroma.Web.Websub
-  alias Pleroma.Workers.Publisher, as: PublisherWorker
-  alias Pleroma.Workers.Receiver, as: ReceiverWorker
-  alias Pleroma.Workers.Subscriber, as: SubscriberWorker
+  alias Pleroma.Workers.PublisherWorker
+  alias Pleroma.Workers.ReceiverWorker
 
   require Logger
 
-  defdelegate worker_args(queue), to: Pleroma.Workers.Helper
-
-  def init do
-    # 1 minute
-    refresh_subscriptions(schedule_in: 60)
-  end
-
-  @doc "Addresses [memory leaks on recursive replies fetching](https://git.pleroma.social/pleroma/pleroma/issues/161)"
+  @doc """
+  Returns `true` if the distance to target object does not exceed max configured value.
+  Serves to prevent fetching of very long threads, especially useful on smaller instances.
+  Addresses [memory leaks on recursive replies fetching](https://git.pleroma.social/pleroma/pleroma/issues/161).
+  Applies to fetching of both ancestor (reply-to) and child (reply) objects.
+  """
   # credo:disable-for-previous-line Credo.Check.Readability.MaxLineLength
-  def allowed_incoming_reply_depth?(depth) do
-    max_replies_depth = Pleroma.Config.get([:instance, :federation_incoming_replies_max_depth])
+  def allowed_thread_distance?(distance) do
+    max_distance = Pleroma.Config.get([:instance, :federation_incoming_replies_max_depth])
 
-    if max_replies_depth do
-      (depth || 1) <= max_replies_depth
+    if max_distance && max_distance >= 0 do
+      # Default depth is 0 (an object has zero distance from itself in its thread)
+      (distance || 0) <= max_distance
     else
       true
     end
@@ -39,16 +35,8 @@ defmodule Pleroma.Web.Federator do
 
   # Client API
 
-  def incoming_doc(doc) do
-    %{"op" => "incoming_doc", "body" => doc}
-    |> ReceiverWorker.new(worker_args(:federator_incoming))
-    |> Pleroma.Repo.insert()
-  end
-
   def incoming_ap_doc(params) do
-    %{"op" => "incoming_ap_doc", "params" => params}
-    |> ReceiverWorker.new(worker_args(:federator_incoming))
-    |> Pleroma.Repo.insert()
+    ReceiverWorker.enqueue("incoming_ap_doc", %{"params" => params})
   end
 
   def publish(%{id: "pleroma:fakeid"} = activity) do
@@ -56,27 +44,7 @@ defmodule Pleroma.Web.Federator do
   end
 
   def publish(activity) do
-    %{"op" => "publish", "activity_id" => activity.id}
-    |> PublisherWorker.new(worker_args(:federator_outgoing))
-    |> Pleroma.Repo.insert()
-  end
-
-  def verify_websub(websub) do
-    %{"op" => "verify_websub", "websub_id" => websub.id}
-    |> SubscriberWorker.new(worker_args(:federator_outgoing))
-    |> Pleroma.Repo.insert()
-  end
-
-  def request_subscription(websub) do
-    %{"op" => "request_subscription", "websub_id" => websub.id}
-    |> SubscriberWorker.new(worker_args(:federator_outgoing))
-    |> Pleroma.Repo.insert()
-  end
-
-  def refresh_subscriptions(worker_args \\ []) do
-    %{"op" => "refresh_subscriptions"}
-    |> SubscriberWorker.new(worker_args ++ [max_attempts: 1] ++ worker_args(:federator_outgoing))
-    |> Pleroma.Repo.insert()
+    PublisherWorker.enqueue("publish", %{"activity_id" => activity.id})
   end
 
   # Job Worker Callbacks
@@ -95,13 +63,8 @@ defmodule Pleroma.Web.Federator do
     end
   end
 
-  def perform(:incoming_doc, doc) do
-    Logger.info("Got document, trying to parse")
-    OStatus.handle_incoming(doc)
-  end
-
   def perform(:incoming_ap_doc, params) do
-    Logger.info("Handling incoming AP activity")
+    Logger.debug("Handling incoming AP activity")
 
     params = Utils.normalize_params(params)
 
@@ -114,46 +77,17 @@ defmodule Pleroma.Web.Federator do
       {:ok, activity}
     else
       %Activity{} ->
-        Logger.info("Already had #{params["id"]}")
+        Logger.debug("Already had #{params["id"]}")
         :error
 
       _e ->
         # Just drop those for now
-        Logger.info("Unhandled activity")
-        Logger.info(Jason.encode!(params, pretty: true))
+        Logger.debug("Unhandled activity")
+        Logger.debug(Jason.encode!(params, pretty: true))
         :error
     end
   end
 
-  def perform(:request_subscription, websub) do
-    Logger.debug("Refreshing #{websub.topic}")
-
-    with {:ok, websub} <- Websub.request_subscription(websub) do
-      Logger.debug("Successfully refreshed #{websub.topic}")
-    else
-      _e -> Logger.debug("Couldn't refresh #{websub.topic}")
-    end
-  end
-
-  def perform(:verify_websub, websub) do
-    Logger.debug(fn ->
-      "Running WebSub verification for #{websub.id} (#{websub.topic}, #{websub.callback})"
-    end)
-
-    Websub.verify(websub)
-  end
-
-  def perform(:refresh_subscriptions) do
-    Logger.debug("Federator running refresh subscriptions")
-    Websub.refresh_subscriptions()
-
-    spawn(fn ->
-      # 6 hours
-      Process.sleep(1000 * 60 * 60 * 6)
-      refresh_subscriptions()
-    end)
-  end
-
   def ap_enabled_actor(id) do
     user = User.get_cached_by_ap_id(id)