Ignore duplicate create activities.

2 files changed, 4 insertions, 2 deletions

diff --git a/lib/pleroma/web/activity_pub/activity_pub_controller.ex b/lib/pleroma/web/activity_pub/activity_pub_controller.ex
index 1a6d7ec7a..835e8bd9d 100644
--- a/lib/pleroma/web/activity_pub/activity_pub_controller.ex
+++ b/lib/pleroma/web/activity_pub/activity_pub_controller.ex
@@ -25,7 +25,7 @@ defmodule Pleroma.Web.ActivityPub.ActivityPubController do
   # TODO: Ensure that this inbox is a recipient of the message
   def inbox(%{assigns: %{valid_signature: true}} = conn, params) do
     # File.write("/tmp/incoming.json", Poison.encode!(params))
-    Logger.info(Poison.encode!(params, [pretty: 2]))
+    # Logger.info(Poison.encode!(params, [pretty: 2]))
     with {:ok, _user} <- ap_enabled_actor(params["actor"]),
          nil <- Activity.get_by_ap_id(params["id"]),
          {:ok, activity} <- Transmogrifier.handle_incoming(params) do
diff --git a/lib/pleroma/web/activity_pub/transmogrifier.ex b/lib/pleroma/web/activity_pub/transmogrifier.ex
index 075250aa5..e53957fbf 100644
--- a/lib/pleroma/web/activity_pub/transmogrifier.ex
+++ b/lib/pleroma/web/activity_pub/transmogrifier.ex
@@ -37,7 +37,8 @@ defmodule Pleroma.Web.ActivityPub.Transmogrifier do
   # - tags
   # - emoji
   def handle_incoming(%{"type" => "Create", "object" => %{"type" => "Note"} = object} = data) do
-    with %User{} = user <- User.get_or_fetch_by_ap_id(data["actor"]) do
+    with nil <- Activity.get_create_activity_by_object_ap_id(object["id"]),
+         %User{} = user <- User.get_or_fetch_by_ap_id(data["actor"]) do
       object = fix_object(data["object"])
       params = %{
         to: data["to"],
@@ -54,6 +55,7 @@ defmodule Pleroma.Web.ActivityPub.Transmogrifier do
 
       ActivityPub.create(params)
     else
+      %Activity{} = activity -> {:ok, activity}
       _e -> :error
     end
   end