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Refactor the ActivityPub module

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Signed-off-by: Thomas Citharel <tcit@tcit.fr>
This commit is contained in:
Thomas Citharel
2021-04-22 12:17:56 +02:00
parent 17a6a6eada
commit 280f461ba7
32 changed files with 385 additions and 332 deletions
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134
lib/federation/activity_pub/activity_pub.ex
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@@ -39,11 +39,12 @@ defmodule Mobilizon.Federation.ActivityPub do
Visibility
}
alias Mobilizon.Federation.ActivityPub.Actor, as: ActivityPubActor
alias Mobilizon.Federation.ActivityPub.Types.{Managable, Ownable}
alias Mobilizon.Federation.ActivityStream.{Converter, Convertible}
alias Mobilizon.Federation.ActivityStream.Convertible
alias Mobilizon.Federation.HTTPSignatures.Signature
alias Mobilizon.Federation.WebFinger
alias Mobilizon.Service.Notifications.Scheduler
alias Mobilizon.Storage.Page
@@ -154,40 +155,6 @@ defmodule Mobilizon.Federation.ActivityPub do
end
end
@doc """
Getting an actor from url, eventually creating it if we don't have it locally or if it needs an update
"""
@spec get_or_fetch_actor_by_url(String.t(), boolean) :: {:ok, Actor.t()} | {:error, String.t()}
def get_or_fetch_actor_by_url(url, preload \\ false)
def get_or_fetch_actor_by_url(nil, _preload), do: {:error, "Can't fetch a nil url"}
def get_or_fetch_actor_by_url("https://www.w3.org/ns/activitystreams#Public", _preload) do
with %Actor{url: url} <- Relay.get_actor() do
get_or_fetch_actor_by_url(url)
end
end
@spec get_or_fetch_actor_by_url(String.t(), boolean()) :: {:ok, Actor.t()} | {:error, any()}
def get_or_fetch_actor_by_url(url, preload) do
with {:ok, %Actor{} = cached_actor} <- Actors.get_actor_by_url(url, preload),
false <- Actors.needs_update?(cached_actor) do
{:ok, cached_actor}
else
_ ->
# For tests, see https://github.com/jjh42/mock#not-supported---mocking-internal-function-calls and Mobilizon.Federation.ActivityPubTest
case __MODULE__.make_actor_from_url(url, preload) do
{:ok, %Actor{} = actor} ->
{:ok, actor}
{:error, err} ->
Logger.debug("Could not fetch by AP id")
Logger.debug(inspect(err))
{:error, "Could not fetch by AP id"}
end
end
end
@doc """
Create an activity of type `Create`
@@ -302,7 +269,8 @@ defmodule Mobilizon.Federation.ActivityPub do
local \\ true,
public \\ true
) do
with {:ok, %Actor{id: object_owner_actor_id}} <- get_or_fetch_actor_by_url(object["actor"]),
with {:ok, %Actor{id: object_owner_actor_id}} <-
ActivityPubActor.get_or_fetch_actor_by_url(object["actor"]),
{:ok, %Share{} = _share} <- Share.create(object["id"], actor.id, object_owner_actor_id),
announce_data <- make_announce_data(actor, object, activity_id, public),
{:ok, activity} <- create_activity(announce_data, local),
@@ -619,64 +587,6 @@ defmodule Mobilizon.Federation.ActivityPub do
end
end
@doc """
Create an actor locally by its URL (AP ID)
"""
@spec make_actor_from_url(String.t(), boolean()) :: {:ok, %Actor{}} | {:error, any()}
def make_actor_from_url(url, preload \\ false) do
if are_same_origin?(url, Endpoint.url()) do
{:error, "Can't make a local actor from URL"}
else
case fetch_and_prepare_actor_from_url(url) do
{:ok, data} ->
Actors.upsert_actor(data, preload)
# Request returned 410
{:error, :actor_deleted} ->
Logger.info("Actor was deleted")
{:error, :actor_deleted}
{:error, e} ->
Logger.warn("Failed to make actor from url")
{:error, e}
end
end
end
@doc """
Find an actor in our local database or call WebFinger to find what's its AP ID is and then fetch it
"""
@spec find_or_make_actor_from_nickname(String.t(), atom() | nil) :: tuple()
def find_or_make_actor_from_nickname(nickname, type \\ nil) do
case Actors.get_actor_by_name(nickname, type) do
%Actor{} = actor ->
{:ok, actor}
nil ->
make_actor_from_nickname(nickname)
end
end
@spec find_or_make_person_from_nickname(String.t()) :: tuple()
def find_or_make_person_from_nickname(nick), do: find_or_make_actor_from_nickname(nick, :Person)
@spec find_or_make_group_from_nickname(String.t()) :: tuple()
def find_or_make_group_from_nickname(nick), do: find_or_make_actor_from_nickname(nick, :Group)
@doc """
Create an actor inside our database from username, using WebFinger to find out its AP ID and then fetch it
"""
@spec make_actor_from_nickname(String.t()) :: {:ok, %Actor{}} | {:error, any()}
def make_actor_from_nickname(nickname) do
case WebFinger.finger(nickname) do
{:ok, url} when is_binary(url) ->
make_actor_from_url(url)
_e ->
{:error, "No ActivityPub URL found in WebFinger"}
end
end
@spec is_create_activity?(Activity.t()) :: boolean
defp is_create_activity?(%Activity{data: %{"type" => "Create"}}), do: true
defp is_create_activity?(_), do: false
@@ -794,40 +704,6 @@ defmodule Mobilizon.Federation.ActivityPub do
)
end
# Fetching a remote actor's information through its AP ID
@spec fetch_and_prepare_actor_from_url(String.t()) :: {:ok, map()} | {:error, atom()} | any()
defp fetch_and_prepare_actor_from_url(url) do
Logger.debug("Fetching and preparing actor from url")
Logger.debug(inspect(url))
res =
with {:ok, %{status: 200, body: body}} <-
Tesla.get(url,
headers: [{"Accept", "application/activity+json"}],
follow_redirect: true
),
:ok <- Logger.debug("response okay, now decoding json"),
{:ok, data} <- Jason.decode(body) do
Logger.debug("Got activity+json response at actor's endpoint, now converting data")
{:ok, Converter.Actor.as_to_model_data(data)}
else
# Actor is gone, probably deleted
{:ok, %{status: 410}} ->
Logger.info("Response HTTP 410")
{:error, :actor_deleted}
{:error, e} ->
Logger.warn("Could not decode actor at fetch #{url}, #{inspect(e)}")
{:error, e}
e ->
Logger.warn("Could not decode actor at fetch #{url}, #{inspect(e)}")
{:error, e}
end
res
end
@doc """
Return all public activities (events & comments) for an actor
"""