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
|
# frozen_string_literal: true
class BatchedRemoveStatusService < BaseService
include StreamEntryRenderer
# Delete given statuses and reblogs of them
# Dispatch PuSH updates of the deleted statuses, but only local ones
# Dispatch Salmon deletes, unique per domain, of the deleted statuses, but only local ones
# Remove statuses from home feeds
# Push delete events to streaming API for home feeds and public feeds
# @param [Status] statuses A preferably batched array of statuses
def call(statuses)
statuses = Status.where(id: statuses.map(&:id)).includes(:account, :stream_entry).flat_map { |status| [status] + status.reblogs.includes(:account, :stream_entry).to_a }
@mentions = statuses.map { |s| [s.id, s.mentions.includes(:account).to_a] }.to_h
@tags = statuses.map { |s| [s.id, s.tags.pluck(:name)] }.to_h
@stream_entry_batches = []
@salmon_batches = []
@json_payloads = statuses.map { |s| [s.id, Oj.dump(event: :delete, payload: s.id.to_s)] }.to_h
@activity_xml = {}
# Ensure that rendered XML reflects destroyed state
statuses.each(&:destroy)
# Batch by source account
statuses.group_by(&:account_id).each_value do |account_statuses|
account = account_statuses.first.account
unpush_from_home_timelines(account, account_statuses)
unpush_from_list_timelines(account, account_statuses)
batch_stream_entries(account, account_statuses) if account.local?
end
# Cannot be batched
statuses.each do |status|
unpush_from_public_timelines(status)
unpush_from_direct_timelines(status) if status.direct_visibility?
batch_salmon_slaps(status) if status.local?
end
Pubsubhubbub::RawDistributionWorker.push_bulk(@stream_entry_batches) { |batch| batch }
NotificationWorker.push_bulk(@salmon_batches) { |batch| batch }
end
private
def batch_stream_entries(account, statuses)
statuses.each do |status|
@stream_entry_batches << [build_xml(status.stream_entry), account.id]
end
end
def unpush_from_home_timelines(account, statuses)
recipients = account.followers.local.to_a
recipients << account if account.local?
recipients.each do |follower|
statuses.each do |status|
FeedManager.instance.unpush_from_home(follower, status)
end
end
end
def unpush_from_list_timelines(account, statuses)
account.lists.select(:id, :account_id).each do |list|
statuses.each do |status|
FeedManager.instance.unpush_from_list(list, status)
end
end
end
def unpush_from_public_timelines(status)
return unless status.public_visibility?
payload = @json_payloads[status.id]
redis.pipelined do
redis.publish('timeline:public', payload)
redis.publish('timeline:public:local', payload) if status.local?
if status.media_attachments.any?
redis.publish('timeline:public:media', payload)
redis.publish('timeline:public:local:media', payload) if status.local?
end
@tags[status.id].each do |hashtag|
redis.publish("timeline:hashtag:#{hashtag}", payload)
redis.publish("timeline:hashtag:#{hashtag}:local", payload) if status.local?
end
end
end
def unpush_from_direct_timelines(status)
payload = @json_payloads[status.id]
redis.pipelined do
@mentions[status.id].each do |mention|
redis.publish("timeline:direct:#{mention.account.id}", payload) if mention.account.local?
end
redis.publish("timeline:direct:#{status.account.id}", payload) if status.account.local?
end
end
def batch_salmon_slaps(status)
return if @mentions[status.id].empty?
recipients = @mentions[status.id].map(&:account).reject(&:local?).select(&:ostatus?).uniq(&:domain).map(&:id)
recipients.each do |recipient_id|
@salmon_batches << [build_xml(status.stream_entry), status.account_id, recipient_id]
end
end
def redis
Redis.current
end
def build_xml(stream_entry)
return @activity_xml[stream_entry.id] if @activity_xml.key?(stream_entry.id)
@activity_xml[stream_entry.id] = stream_entry_to_xml(stream_entry)
end
end
|
