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.Object.Fetcher
11 alias Pleroma.ObjectTombstone
27 Object.change(%Object{}, %{data: data})
31 def change(struct, params \\ %{}) do
33 |> cast(params, [:data])
34 |> validate_required([:data])
35 |> unique_constraint(:ap_id, name: :objects_unique_apid_index)
38 def get_by_ap_id(nil), do: nil
40 def get_by_ap_id(ap_id) do
41 Repo.one(from(object in Object, where: fragment("(?)->>'id' = ?", object.data, ^ap_id)))
44 def normalize(_, fetch_remote \\ true)
45 # If we pass an Activity to Object.normalize(), we can try to use the preloaded object.
46 # Use this whenever possible, especially when walking graphs in an O(N) loop!
47 def normalize(%Activity{object: %Object{} = object}, _), do: object
49 # A hack for fake activities
50 def normalize(%Activity{data: %{"object" => %{"fake" => true} = data}}, _) do
51 %Object{id: "pleroma:fake_object_id", data: data}
54 # Catch and log Object.normalize() calls where the Activity's child object is not
56 def normalize(%Activity{data: %{"object" => %{"id" => ap_id}}}, fetch_remote) do
58 "Object.normalize() called without preloaded object (#{ap_id}). Consider preloading the object!"
61 Logger.debug("Backtrace: #{inspect(Process.info(:erlang.self(), :current_stacktrace))}")
63 normalize(ap_id, fetch_remote)
66 def normalize(%Activity{data: %{"object" => ap_id}}, fetch_remote) do
68 "Object.normalize() called without preloaded object (#{ap_id}). Consider preloading the object!"
71 Logger.debug("Backtrace: #{inspect(Process.info(:erlang.self(), :current_stacktrace))}")
73 normalize(ap_id, fetch_remote)
76 # Old way, try fetching the object through cache.
77 def normalize(%{"id" => ap_id}, fetch_remote), do: normalize(ap_id, fetch_remote)
78 def normalize(ap_id, false) when is_binary(ap_id), do: get_cached_by_ap_id(ap_id)
79 def normalize(ap_id, true) when is_binary(ap_id), do: Fetcher.fetch_object_from_id!(ap_id)
80 def normalize(_, _), do: nil
82 # Owned objects can only be mutated by their owner
83 def authorize_mutation(%Object{data: %{"actor" => actor}}, %User{ap_id: ap_id}),
86 # Legacy objects can be mutated by anybody
87 def authorize_mutation(%Object{}, %User{}), do: true
89 def get_cached_by_ap_id(ap_id) do
90 key = "object:#{ap_id}"
92 Cachex.fetch!(:object_cache, key, fn _ ->
93 object = get_by_ap_id(ap_id)
103 def context_mapping(context) do
104 Object.change(%Object{}, %{data: %{"id" => context}})
107 def make_tombstone(%Object{data: %{"id" => id, "type" => type}}, deleted \\ DateTime.utc_now()) do
116 def swap_object_with_tombstone(object) do
117 tombstone = make_tombstone(object)
120 |> Object.change(%{data: tombstone})
124 def delete(%Object{data: %{"id" => id}} = object) do
125 with {:ok, _obj} = swap_object_with_tombstone(object),
126 deleted_activity = Activity.delete_by_ap_id(id),
127 {:ok, true} <- Cachex.del(:object_cache, "object:#{id}") do
128 {:ok, object, deleted_activity}
132 def set_cache(%Object{data: %{"id" => ap_id}} = object) do
133 Cachex.put(:object_cache, "object:#{ap_id}", object)
137 def update_and_set_cache(changeset) do
138 with {:ok, object} <- Repo.update(changeset) do
145 def increase_replies_count(ap_id) do
147 |> where([o], fragment("?->>'id' = ?::text", o.data, ^to_string(ap_id)))
153 jsonb_set(?, '{repliesCount}',
154 (coalesce((?->>'repliesCount')::int, 0) + 1)::varchar::jsonb, true)
161 |> Repo.update_all([])
163 {1, [object]} -> set_cache(object)
164 _ -> {:error, "Not found"}
168 def decrease_replies_count(ap_id) do
170 |> where([o], fragment("?->>'id' = ?::text", o.data, ^to_string(ap_id)))
176 jsonb_set(?, '{repliesCount}',
177 (greatest(0, (?->>'repliesCount')::int - 1))::varchar::jsonb, true)
184 |> Repo.update_all([])
186 {1, [object]} -> set_cache(object)
187 _ -> {:error, "Not found"}