akkoma/lib/pleroma/web/activity_pub/pipeline.ex
lain 115d08a754 Pipeline: Add a side effects step after the transaction finishes
This is to run things like streaming notifications out, which will
sometimes need data that is created by the transaction, but is
streamed out asynchronously.
2020-06-05 16:47:02 +02:00

64 lines
2 KiB
Elixir

# Pleroma: A lightweight social networking server
# Copyright © 2017-2020 Pleroma Authors <https://pleroma.social/>
# SPDX-License-Identifier: AGPL-3.0-only
defmodule Pleroma.Web.ActivityPub.Pipeline do
alias Pleroma.Activity
alias Pleroma.Config
alias Pleroma.Object
alias Pleroma.Repo
alias Pleroma.Web.ActivityPub.ActivityPub
alias Pleroma.Web.ActivityPub.MRF
alias Pleroma.Web.ActivityPub.ObjectValidator
alias Pleroma.Web.ActivityPub.SideEffects
alias Pleroma.Web.Federator
@spec common_pipeline(map(), keyword()) ::
{:ok, Activity.t() | Object.t(), keyword()} | {:error, any()}
def common_pipeline(object, meta) do
case Repo.transaction(fn -> do_common_pipeline(object, meta) end) do
{:ok, {:ok, activity, meta}} ->
SideEffects.handle_after_transaction(meta)
{:ok, activity, meta}
{:ok, value} ->
value
{:error, e} ->
{:error, e}
end
end
def do_common_pipeline(object, meta) do
with {_, {:ok, validated_object, meta}} <-
{:validate_object, ObjectValidator.validate(object, meta)},
{_, {:ok, mrfd_object}} <- {:mrf_object, MRF.filter(validated_object)},
{_, {:ok, activity, meta}} <-
{:persist_object, ActivityPub.persist(mrfd_object, meta)},
{_, {:ok, activity, meta}} <-
{:execute_side_effects, SideEffects.handle(activity, meta)},
{_, {:ok, _}} <- {:federation, maybe_federate(activity, meta)} do
{:ok, activity, meta}
else
{:mrf_object, {:reject, _}} -> {:ok, nil, meta}
e -> {:error, e}
end
end
defp maybe_federate(%Object{}, _), do: {:ok, :not_federated}
defp maybe_federate(%Activity{} = activity, meta) do
with {:ok, local} <- Keyword.fetch(meta, :local) do
do_not_federate = meta[:do_not_federate] || !Config.get([:instance, :federating])
if !do_not_federate && local do
Federator.publish(activity)
{:ok, :federated}
else
{:ok, :not_federated}
end
else
_e -> {:error, :badarg}
end
end
end