Merge branch 'backport/feature-poll-refresh' into 'maint/1.1'

backport: poll refreshing

See merge request pleroma/pleroma!1804

lib/pleroma/constants.ex

@@ -6,4 +6,16 @@ defmodule Pleroma.Constants do
   use Const
 
   const(as_public, do: "https://www.w3.org/ns/activitystreams#Public")
+
+  const(object_internal_fields,
+    do: [
+      "likes",
+      "like_count",
+      "announcements",
+      "announcement_count",
+      "emoji",
+      "context_id",
+      "deleted_activity_id"
+    ]
+  )
 end

lib/pleroma/object.ex

@@ -38,6 +38,24 @@ defmodule Pleroma.Object do
   def get_by_id(nil), do: nil
   def get_by_id(id), do: Repo.get(Object, id)
 
+  def get_by_id_and_maybe_refetch(id, opts \\ []) do
+    %{updated_at: updated_at} = object = get_by_id(id)
+
+    if opts[:interval] &&
+         NaiveDateTime.diff(NaiveDateTime.utc_now(), updated_at) > opts[:interval] do
+      case Fetcher.refetch_object(object) do
+        {:ok, %Object{} = object} ->
+          object
+
+        e ->
+          Logger.error("Couldn't refresh #{object.data["id"]}:\n#{inspect(e)}")
+          object
+      end
+    else
+      object
+    end
+  end
+
   def get_by_ap_id(nil), do: nil
 
   def get_by_ap_id(ap_id) do

lib/pleroma/object/fetcher.ex

@@ -6,18 +6,39 @@ defmodule Pleroma.Object.Fetcher do
   alias Pleroma.HTTP
   alias Pleroma.Object
   alias Pleroma.Object.Containment
+  alias Pleroma.Repo
   alias Pleroma.Signature
   alias Pleroma.Web.ActivityPub.InternalFetchActor
   alias Pleroma.Web.ActivityPub.Transmogrifier
   alias Pleroma.Web.OStatus
 
   require Logger
+  require Pleroma.Constants
 
-  defp reinject_object(data) do
+  defp touch_changeset(changeset) do
+    updated_at =
+      NaiveDateTime.utc_now()
+      |> NaiveDateTime.truncate(:second)
+
+    Ecto.Changeset.put_change(changeset, :updated_at, updated_at)
+  end
+
+  defp maybe_reinject_internal_fields(data, %{data: %{} = old_data}) do
+    internal_fields = Map.take(old_data, Pleroma.Constants.object_internal_fields())
+
+    Map.merge(data, internal_fields)
+  end
+
+  defp maybe_reinject_internal_fields(data, _), do: data
+
+  defp reinject_object(struct, data) do
     Logger.debug("Reinjecting object #{data["id"]}")
 
     with data <- Transmogrifier.fix_object(data),
-         {:ok, object} <- Object.create(data) do
+         data <- maybe_reinject_internal_fields(data, struct),
+         changeset <- Object.change(struct, %{data: data}),
+         changeset <- touch_changeset(changeset),
+         {:ok, object} <- Repo.insert_or_update(changeset) do
       {:ok, object}
     else
       e ->
@@ -26,6 +47,17 @@ defmodule Pleroma.Object.Fetcher do
     end
   end
 
+  def refetch_object(%Object{data: %{"id" => id}} = object) do
+    with {:local, false} <- {:local, String.starts_with?(id, Pleroma.Web.base_url() <> "/")},
+         {:ok, data} <- fetch_and_contain_remote_object_from_id(id),
+         {:ok, object} <- reinject_object(object, data) do
+      {:ok, object}
+    else
+      {:local, true} -> object
+      e -> {:error, e}
+    end
+  end
+
   # TODO:
   # This will create a Create activity, which we need internally at the moment.
   def fetch_object_from_id(id, options \\ []) do
@@ -57,7 +89,7 @@ defmodule Pleroma.Object.Fetcher do
           {:reject, nil}
 
         {:object, data, nil} ->
-          reinject_object(data)
+          reinject_object(%Object{}, data)
 
         {:normalize, object = %Object{}} ->
           {:ok, object}

lib/pleroma/web/activity_pub/transmogrifier.ex

@@ -997,15 +997,7 @@ defmodule Pleroma.Web.ActivityPub.Transmogrifier do
 
   defp strip_internal_fields(object) do
     object
-    |> Map.drop([
-      "likes",
-      "like_count",
-      "announcements",
-      "announcement_count",
-      "emoji",
-      "context_id",
-      "deleted_activity_id"
-    ])
+    |> Map.drop(Pleroma.Constants.object_internal_fields())
   end
 
   defp strip_internal_tags(%{"tag" => tags} = object) do

lib/pleroma/web/mastodon_api/controllers/mastodon_api_controller.ex

@@ -485,7 +485,7 @@ defmodule Pleroma.Web.MastodonAPI.MastodonAPIController do
   end
 
   def get_poll(%{assigns: %{user: user}} = conn, %{"id" => id}) do
-    with %Object{} = object <- Object.get_by_id(id),
+    with %Object{} = object <- Object.get_by_id_and_maybe_refetch(id, interval: 60),
          %Activity{} = activity <- Activity.get_create_by_object_ap_id(object.data["id"]),
          true <- Visibility.visible_for_user?(activity, user) do
       conn