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# 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.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, 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
if local do
Federator.publish(activity)
{:ok, :federated}
else
{:ok, :not_federated}
end
else
_e -> {:error, :badarg}
end
end
end
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