Also prune rejected Follow activities

lib/pleroma/activity/pruner.ex

@@ -35,6 +35,17 @@ def prune_removes do
     |> Repo.delete_all(timeout: :infinity)
   end
 
+  def prune_stale_follow_requests do
+    before_time = cutoff()
+
+    from(a in Activity,
+      where:
+        fragment("?->>'type' = ?", a.data, "Follow") and a.inserted_at < ^before_time and
+          fragment("?->>'state' = ?", a.data, "reject")
+    )
+    |> Repo.delete_all(timeout: :infinity)
+  end
+
   defp cutoff do
     DateTime.utc_now() |> Timex.shift(days: -@cutoff)
   end

test/pleroma/activity/pruner_test.exs

@@ -24,4 +24,40 @@ test "it prunes old delete objects" do
       refute Activity.get_by_id(old_delete.id)
     end
   end
+
+  describe "prune_stale_follow_requests" do
+    test "it prunes old follow requests" do
+      follower = insert(:user)
+      followee = insert(:user)
+
+      new_follow_request =
+        insert(
+          :follow_activity,
+          follower: follower,
+          followd: followee,
+          state: "reject"
+        )
+
+      old_not_rejected_request =
+        insert(:follow_activity,
+          follower: follower,
+          followd: followee,
+          state: "pending",
+          inserted_at: DateTime.utc_now() |> DateTime.add(-31 * 24, :hour)
+        )
+
+      old_follow_request =
+        insert(:follow_activity,
+          follower: follower,
+          followd: followee,
+          inserted_at: DateTime.utc_now() |> DateTime.add(-31 * 24, :hour),
+          state: "reject"
+        )
+
+      Pruner.prune_stale_follow_requests()
+      assert Activity.get_by_id(new_follow_request.id)
+      assert Activity.get_by_id(old_not_rejected_request.id)
+      refute Activity.get_by_id(old_follow_request.id)
+    end
+  end
 end

test/support/factory.ex

@@ -469,6 +469,7 @@ def follow_activity_factory(attrs \\ %{}) do
       data: data,
       actor: follower.ap_id
     }
+    |> Map.merge(attrs)
   end
 
   def report_activity_factory(attrs \\ %{}) do