1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
|
# Pleroma: A lightweight social networking server
# Copyright © 2017-2020 Pleroma Authors <https://pleroma.social/>
# SPDX-License-Identifier: AGPL-3.0-only
defmodule Pleroma.Workers.AttachmentsCleanupWorker do
import Ecto.Query
alias Pleroma.Object
alias Pleroma.Repo
use Pleroma.Workers.WorkerHelper, queue: "attachments_cleanup"
@impl Oban.Worker
def perform(
%{
"op" => "cleanup_attachments",
"object" => %{"data" => %{"attachment" => [_ | _] = attachments, "actor" => actor}}
},
_job
) do
hrefs =
Enum.flat_map(attachments, fn attachment ->
Enum.map(attachment["url"], & &1["href"])
end)
names = Enum.map(attachments, & &1["name"])
uploader = Pleroma.Config.get([Pleroma.Upload, :uploader])
prefix =
case Pleroma.Config.get([Pleroma.Upload, :base_url]) do
nil -> "media"
_ -> ""
end
base_url =
String.trim_trailing(
Pleroma.Config.get([Pleroma.Upload, :base_url], Pleroma.Web.base_url()),
"/"
)
# find all objects for copies of the attachments, name and actor doesn't matter here
object_ids_and_hrefs =
from(o in Object,
where:
fragment(
"to_jsonb(array(select jsonb_array_elements((?)#>'{url}') ->> 'href' where jsonb_typeof((?)#>'{url}') = 'array'))::jsonb \\?| (?)",
o.data,
o.data,
^hrefs
)
)
# The query above can be time consumptive on large instances until we
# refactor how uploads are stored
|> Repo.all(timeout: :infinity)
# we should delete 1 object for any given attachment, but don't delete
# files if there are more than 1 object for it
|> Enum.reduce(%{}, fn %{
id: id,
data: %{
"url" => [%{"href" => href}],
"actor" => obj_actor,
"name" => name
}
},
acc ->
Map.update(acc, href, %{id: id, count: 1}, fn val ->
case obj_actor == actor and name in names do
true ->
# set id of the actor's object that will be deleted
%{val | id: id, count: val.count + 1}
false ->
# another actor's object, just increase count to not delete file
%{val | count: val.count + 1}
end
end)
end)
|> Enum.map(fn {href, %{id: id, count: count}} ->
# only delete files that have single instance
with 1 <- count do
href
|> String.trim_leading("#{base_url}/#{prefix}")
|> uploader.delete_file()
{id, href}
else
_ -> {id, nil}
end
end)
object_ids = Enum.map(object_ids_and_hrefs, fn {id, _} -> id end)
from(o in Object, where: o.id in ^object_ids)
|> Repo.delete_all()
object_ids_and_hrefs
|> Enum.filter(fn {_, href} -> not is_nil(href) end)
|> Enum.map(&elem(&1, 1))
|> Pleroma.Web.MediaProxy.Invalidation.purge()
{:ok, :success}
end
def perform(%{"op" => "cleanup_attachments", "object" => _object}, _job), do: {:ok, :skip}
end
|
