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
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
|
# frozen_string_literal: true
class RemoveStatusService < BaseService
include Redisable
include Payloadable
# Delete a status
# @param [Status] status
# @param [Hash] options
# @option [Boolean] :redraft
# @option [Boolean] :immediate
# @option [Boolean] :preserve
# @option [Boolean] :original_removed
def call(status, **options)
@payload = Oj.dump(event: :delete, payload: status.id.to_s)
@status = status
@account = status.account
@options = options
@status.discard
RedisLock.acquire(lock_options) do |lock|
if lock.acquired?
remove_from_self if @account.local?
remove_from_followers
remove_from_lists
# There is no reason to send out Undo activities when the
# cause is that the original object has been removed, since
# original object being removed implicitly removes reblogs
# of it. The Delete activity of the original is forwarded
# separately.
remove_from_remote_reach if @account.local? && !@options[:original_removed]
# Since reblogs don't mention anyone, don't get reblogged,
# favourited and don't contain their own media attachments
# or hashtags, this can be skipped
unless @status.reblog?
remove_from_mentions
remove_reblogs
remove_from_hashtags
remove_from_public
remove_from_media if @status.media_attachments.any?
remove_from_direct if status.direct_visibility?
remove_media
end
@status.destroy! if permanently?
else
raise Mastodon::RaceConditionError
end
end
end
private
def remove_from_self
FeedManager.instance.unpush_from_home(@account, @status)
FeedManager.instance.unpush_from_direct(@account, @status) if @status.direct_visibility?
end
def remove_from_followers
@account.followers_for_local_distribution.reorder(nil).find_each do |follower|
FeedManager.instance.unpush_from_home(follower, @status)
end
end
def remove_from_lists
@account.lists_for_local_distribution.select(:id, :account_id).reorder(nil).find_each do |list|
FeedManager.instance.unpush_from_list(list, @status)
end
end
def remove_from_mentions
# For limited visibility statuses, the mentions that determine
# who receives them in their home feed are a subset of followers
# and therefore the delete is already handled by sending it to all
# followers. Here we send a delete to actively mentioned accounts
# that may not follow the account
@status.active_mentions.find_each do |mention|
redis.publish("timeline:#{mention.account_id}", @payload)
end
end
def remove_from_remote_reach
# Followers, relays, people who got mentioned in the status,
# or who reblogged it from someone else might not follow
# the author and wouldn't normally receive the delete
# notification - so here, we explicitly send it to them
status_reach_finder = StatusReachFinder.new(@status, unsafe: true)
ActivityPub::DeliveryWorker.push_bulk(status_reach_finder.inboxes) do |inbox_url|
[signed_activity_json, @account.id, inbox_url]
end
end
def signed_activity_json
@signed_activity_json ||= Oj.dump(serialize_payload(@status, @status.reblog? ? ActivityPub::UndoAnnounceSerializer : ActivityPub::DeleteSerializer, signer: @account, always_sign: true))
end
def remove_reblogs
# We delete reblogs of the status before the original status,
# because once original status is gone, reblogs will disappear
# without us being able to do all the fancy stuff
@status.reblogs.includes(:account).reorder(nil).find_each do |reblog|
RemoveStatusService.new.call(reblog, original_removed: true)
end
end
def remove_from_hashtags
@account.featured_tags.where(tag_id: @status.tags.map(&:id)).each do |featured_tag|
featured_tag.decrement(@status.id)
end
return unless @status.public_visibility?
@status.tags.map(&:name).each do |hashtag|
redis.publish("timeline:hashtag:#{hashtag.mb_chars.downcase}", @payload)
redis.publish("timeline:hashtag:#{hashtag.mb_chars.downcase}:local", @payload) if @status.local?
end
end
def remove_from_public
return unless @status.public_visibility?
redis.publish('timeline:public', @payload)
redis.publish(@status.local? ? 'timeline:public:local' : 'timeline:public:remote', @payload)
end
def remove_from_media
return unless @status.public_visibility?
redis.publish('timeline:public:media', @payload)
redis.publish(@status.local? ? 'timeline:public:local:media' : 'timeline:public:remote:media', @payload)
end
def remove_from_direct
@status.active_mentions.each do |mention|
FeedManager.instance.unpush_from_direct(mention.account, @status) if mention.account.local?
end
end
def remove_media
return if @options[:redraft] || !permanently?
@status.media_attachments.destroy_all
end
def permanently?
@options[:immediate] || !(@options[:preserve] || @status.reported?)
end
def lock_options
{ redis: Redis.current, key: "distribute:#{@status.id}", autorelease: 5.minutes.seconds }
end
end
|
