121 lines
3.0 KiB
Elixir
121 lines
3.0 KiB
Elixir
# Pleroma: A lightweight social networking server
|
|
# Copyright © 2017-2019 Pleroma Authors <https://pleroma.social/>
|
|
# SPDX-License-Identifier: AGPL-3.0-only
|
|
|
|
defmodule Pleroma.Object do
|
|
use Ecto.Schema
|
|
alias Pleroma.{Repo, Object, User, Activity, ObjectTombstone}
|
|
import Ecto.{Query, Changeset}
|
|
|
|
schema "objects" do
|
|
field(:data, :map)
|
|
|
|
timestamps()
|
|
end
|
|
|
|
def insert_or_get(cng) do
|
|
{_, data} = fetch_field(cng, :data)
|
|
id = data["id"] || data[:id]
|
|
key = "object:#{id}"
|
|
|
|
fetcher = fn _ ->
|
|
with nil <- get_by_ap_id(id),
|
|
{:ok, object} <- Repo.insert(cng) do
|
|
{:commit, object}
|
|
else
|
|
%Object{} = object -> {:commit, object}
|
|
e -> {:ignore, e}
|
|
end
|
|
end
|
|
|
|
with {state, object} when state in [:commit, :ok] <- Cachex.fetch(:object_cache, key, fetcher) do
|
|
{:ok, object}
|
|
end
|
|
end
|
|
|
|
def create(data) do
|
|
Object.change(%Object{}, %{data: data})
|
|
|> insert_or_get()
|
|
end
|
|
|
|
def change(struct, params \\ %{}) do
|
|
struct
|
|
|> cast(params, [:data])
|
|
|> validate_required([:data])
|
|
|> unique_constraint(:ap_id, name: :objects_unique_apid_index)
|
|
end
|
|
|
|
def get_by_ap_id(nil), do: nil
|
|
|
|
def get_by_ap_id(ap_id) do
|
|
Repo.one(from(object in Object, where: fragment("(?)->>'id' = ?", object.data, ^ap_id)))
|
|
end
|
|
|
|
def normalize(%{"id" => ap_id}), do: normalize(ap_id)
|
|
def normalize(ap_id) when is_binary(ap_id), do: get_cached_by_ap_id(ap_id)
|
|
def normalize(_), do: nil
|
|
|
|
# Owned objects can only be mutated by their owner
|
|
def authorize_mutation(%Object{data: %{"actor" => actor}}, %User{ap_id: ap_id}),
|
|
do: actor == ap_id
|
|
|
|
# Legacy objects can be mutated by anybody
|
|
def authorize_mutation(%Object{}, %User{}), do: true
|
|
|
|
def get_cached_by_ap_id(ap_id) do
|
|
key = "object:#{ap_id}"
|
|
|
|
Cachex.fetch!(:object_cache, key, fn _ ->
|
|
object = get_by_ap_id(ap_id)
|
|
|
|
if object do
|
|
{:commit, object}
|
|
else
|
|
{:ignore, object}
|
|
end
|
|
end)
|
|
end
|
|
|
|
def context_mapping(context) do
|
|
Object.change(%Object{}, %{data: %{"id" => context}})
|
|
end
|
|
|
|
def make_tombstone(%Object{data: %{"id" => id, "type" => type}}, deleted \\ DateTime.utc_now()) do
|
|
%ObjectTombstone{
|
|
id: id,
|
|
formerType: type,
|
|
deleted: deleted
|
|
}
|
|
|> Map.from_struct()
|
|
end
|
|
|
|
def swap_object_with_tombstone(object) do
|
|
tombstone = make_tombstone(object)
|
|
|
|
object
|
|
|> Object.change(%{data: tombstone})
|
|
|> Repo.update()
|
|
end
|
|
|
|
def delete(%Object{data: %{"id" => id}} = object) do
|
|
with {:ok, _obj} = swap_object_with_tombstone(object),
|
|
Repo.delete_all(Activity.by_object_ap_id(id)),
|
|
{:ok, true} <- Cachex.del(:object_cache, "object:#{id}") do
|
|
{:ok, object}
|
|
end
|
|
end
|
|
|
|
def set_cache(%Object{data: %{"id" => ap_id}} = object) do
|
|
Cachex.put(:object_cache, "object:#{ap_id}", object)
|
|
{:ok, object}
|
|
end
|
|
|
|
def update_and_set_cache(changeset) do
|
|
with {:ok, object} <- Repo.update(changeset) do
|
|
set_cache(object)
|
|
else
|
|
e -> e
|
|
end
|
|
end
|
|
end
|