akkoma/lib/pleroma/web/activity_pub/relay.ex

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# Pleroma: A lightweight social networking server
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# Copyright © 2017-2019 Pleroma Authors <https://pleroma.social/>
# SPDX-License-Identifier: AGPL-3.0-only
defmodule Pleroma.Web.ActivityPub.Relay do
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alias Pleroma.Activity
alias Pleroma.Object
alias Pleroma.User
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alias Pleroma.Web.ActivityPub.ActivityPub
require Logger
def get_actor do
"#{Pleroma.Web.Endpoint.url()}/relay"
|> User.get_or_create_service_actor_by_ap_id()
end
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@spec follow(String.t()) :: {:ok, Activity.t()} | {:error, any()}
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def follow(target_instance) do
with %User{} = local_user <- get_actor(),
{:ok, %User{} = target_user} <- User.get_or_fetch_by_ap_id(target_instance),
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{:ok, activity} <- ActivityPub.follow(local_user, target_user) do
Logger.info("relay: followed instance: #{target_instance}; id=#{activity.data["id"]}")
{:ok, activity}
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else
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error -> format_error(error)
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end
end
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@spec unfollow(String.t()) :: {:ok, Activity.t()} | {:error, any()}
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def unfollow(target_instance) do
with %User{} = local_user <- get_actor(),
{:ok, %User{} = target_user} <- User.get_or_fetch_by_ap_id(target_instance),
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{:ok, activity} <- ActivityPub.unfollow(local_user, target_user) do
User.unfollow(local_user, target_user)
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Logger.info("relay: unfollowed instance: #{target_instance}: id=#{activity.data["id"]}")
{:ok, activity}
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else
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error -> format_error(error)
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end
end
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@spec publish(any()) :: {:ok, Activity.t(), Object.t()} | {:error, any()}
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def publish(%Activity{data: %{"type" => "Create"}} = activity) do
with %User{} = user <- get_actor(),
%Object{} = object <- Object.normalize(activity) do
ActivityPub.announce(user, object, nil, true, false)
else
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error -> format_error(error)
end
end
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def publish(_), do: {:error, "Not implemented"}
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defp format_error({:error, error}), do: format_error(error)
defp format_error(error) do
Logger.error("error: #{inspect(error)}")
{:error, error}
end
end