1 # Pleroma: A lightweight social networking server
2 # Copyright © 2017-2019 Pleroma Authors <https://pleroma.social/>
3 # SPDX-License-Identifier: AGPL-3.0-only
5 defmodule Pleroma.Object do
10 alias Pleroma.ObjectTombstone
26 Object.change(%Object{}, %{data: data})
30 def change(struct, params \\ %{}) do
32 |> cast(params, [:data])
33 |> validate_required([:data])
34 |> unique_constraint(:ap_id, name: :objects_unique_apid_index)
37 def get_by_ap_id(nil), do: nil
39 def get_by_ap_id(ap_id) do
40 Repo.one(from(object in Object, where: fragment("(?)->>'id' = ?", object.data, ^ap_id)))
43 # If we pass an Activity to Object.normalize(), we can try to use the preloaded object.
44 # Use this whenever possible, especially when walking graphs in an O(N) loop!
45 def normalize(%Activity{object: %Object{} = object}), do: object
47 # Catch and log Object.normalize() calls where the Activity's child object is not
49 def normalize(%Activity{data: %{"object" => %{"id" => ap_id}}}) do
51 "Object.normalize() called without preloaded object (#{ap_id}). Consider preloading the object!"
54 Logger.debug("Backtrace: #{inspect(Process.info(:erlang.self(), :current_stacktrace))}")
59 def normalize(%Activity{data: %{"object" => ap_id}}) do
61 "Object.normalize() called without preloaded object (#{ap_id}). Consider preloading the object!"
64 Logger.debug("Backtrace: #{inspect(Process.info(:erlang.self(), :current_stacktrace))}")
69 # Old way, try fetching the object through cache.
70 def normalize(%{"id" => ap_id}), do: normalize(ap_id)
71 def normalize(ap_id) when is_binary(ap_id), do: get_cached_by_ap_id(ap_id)
72 def normalize(_), do: nil
74 # Owned objects can only be mutated by their owner
75 def authorize_mutation(%Object{data: %{"actor" => actor}}, %User{ap_id: ap_id}),
78 # Legacy objects can be mutated by anybody
79 def authorize_mutation(%Object{}, %User{}), do: true
81 def get_cached_by_ap_id(ap_id) do
82 key = "object:#{ap_id}"
84 Cachex.fetch!(:object_cache, key, fn _ ->
85 object = get_by_ap_id(ap_id)
95 def context_mapping(context) do
96 Object.change(%Object{}, %{data: %{"id" => context}})
99 def make_tombstone(%Object{data: %{"id" => id, "type" => type}}, deleted \\ DateTime.utc_now()) do
108 def swap_object_with_tombstone(object) do
109 tombstone = make_tombstone(object)
112 |> Object.change(%{data: tombstone})
116 def delete(%Object{data: %{"id" => id}} = object) do
117 with {:ok, _obj} = swap_object_with_tombstone(object),
118 deleted_activity = Activity.delete_by_ap_id(id),
119 {:ok, true} <- Cachex.del(:object_cache, "object:#{id}") do
120 {:ok, object, deleted_activity}
124 def set_cache(%Object{data: %{"id" => ap_id}} = object) do
125 Cachex.put(:object_cache, "object:#{ap_id}", object)
129 def update_and_set_cache(changeset) do
130 with {:ok, object} <- Repo.update(changeset) do
137 def increase_replies_count(ap_id) do
139 |> where([o], fragment("?->>'id' = ?::text", o.data, ^to_string(ap_id)))
145 jsonb_set(?, '{repliesCount}',
146 (coalesce((?->>'repliesCount')::int, 0) + 1)::varchar::jsonb, true)
153 |> Repo.update_all([])
155 {1, [object]} -> set_cache(object)
156 _ -> {:error, "Not found"}
160 def decrease_replies_count(ap_id) do
162 |> where([o], fragment("?->>'id' = ?::text", o.data, ^to_string(ap_id)))
168 jsonb_set(?, '{repliesCount}',
169 (greatest(0, (?->>'repliesCount')::int - 1))::varchar::jsonb, true)
176 |> Repo.update_all([])
178 {1, [object]} -> set_cache(object)
179 _ -> {:error, "Not found"}