mirror of https://github.com/mastodon/mastodon.git
130 lines
5.1 KiB
Ruby
130 lines
5.1 KiB
Ruby
# frozen_string_literal: true
|
|
|
|
require 'singleton'
|
|
|
|
class FeedManager
|
|
include Singleton
|
|
|
|
MAX_ITEMS = 400
|
|
|
|
def key(type, id)
|
|
"feed:#{type}:#{id}"
|
|
end
|
|
|
|
def filter?(timeline_type, status, receiver_id)
|
|
if timeline_type == :home
|
|
filter_from_home?(status, receiver_id)
|
|
elsif timeline_type == :mentions
|
|
filter_from_mentions?(status, receiver_id)
|
|
else
|
|
false
|
|
end
|
|
end
|
|
|
|
def push(timeline_type, account, status)
|
|
timeline_key = key(timeline_type, account.id)
|
|
|
|
if status.reblog?
|
|
# If the original status is within 40 statuses from top, do not re-insert it into the feed
|
|
rank = redis.zrevrank(timeline_key, status.reblog_of_id)
|
|
return if !rank.nil? && rank < 40
|
|
redis.zadd(timeline_key, status.id, status.reblog_of_id)
|
|
else
|
|
redis.zadd(timeline_key, status.id, status.id)
|
|
trim(timeline_type, account.id)
|
|
end
|
|
|
|
PushUpdateWorker.perform_async(account.id, status.id)
|
|
end
|
|
|
|
def trim(type, account_id)
|
|
return unless redis.zcard(key(type, account_id)) > FeedManager::MAX_ITEMS
|
|
last = redis.zrevrange(key(type, account_id), FeedManager::MAX_ITEMS - 1, FeedManager::MAX_ITEMS - 1)
|
|
redis.zremrangebyscore(key(type, account_id), '-inf', "(#{last.last}")
|
|
end
|
|
|
|
def merge_into_timeline(from_account, into_account)
|
|
timeline_key = key(:home, into_account.id)
|
|
query = from_account.statuses.limit(FeedManager::MAX_ITEMS / 4)
|
|
|
|
if redis.zcard(timeline_key) >= FeedManager::MAX_ITEMS / 4
|
|
oldest_home_score = redis.zrange(timeline_key, 0, 0, with_scores: true)&.first&.last&.to_i || 0
|
|
query = query.where('id > ?', oldest_home_score)
|
|
end
|
|
|
|
redis.pipelined do
|
|
query.each do |status|
|
|
next if status.direct_visibility? || filter?(:home, status, into_account)
|
|
redis.zadd(timeline_key, status.id, status.id)
|
|
end
|
|
end
|
|
|
|
trim(:home, into_account.id)
|
|
end
|
|
|
|
def unmerge_from_timeline(from_account, into_account)
|
|
timeline_key = key(:home, into_account.id)
|
|
oldest_home_score = redis.zrange(timeline_key, 0, 0, with_scores: true)&.first&.last&.to_i || 0
|
|
|
|
from_account.statuses.select('id').where('id > ?', oldest_home_score).reorder(nil).find_in_batches do |statuses|
|
|
redis.pipelined do
|
|
statuses.each do |status|
|
|
redis.zrem(timeline_key, status.id)
|
|
redis.zremrangebyscore(timeline_key, status.id, status.id)
|
|
end
|
|
end
|
|
end
|
|
end
|
|
|
|
def clear_from_timeline(account, target_account)
|
|
timeline_key = key(:home, account.id)
|
|
timeline_status_ids = redis.zrange(timeline_key, 0, -1)
|
|
target_status_ids = Status.where(id: timeline_status_ids, account: target_account).ids
|
|
|
|
redis.zrem(timeline_key, target_status_ids) if target_status_ids.present?
|
|
end
|
|
|
|
private
|
|
|
|
def redis
|
|
Redis.current
|
|
end
|
|
|
|
def filter_from_home?(status, receiver_id)
|
|
return true if status.reply? && status.in_reply_to_id.nil?
|
|
|
|
check_for_mutes = [status.account_id]
|
|
check_for_mutes.concat([status.reblog.account_id]) if status.reblog?
|
|
|
|
return true if Mute.where(account_id: receiver_id, target_account_id: check_for_mutes).any?
|
|
|
|
check_for_blocks = status.mentions.map(&:account_id)
|
|
check_for_blocks.concat([status.reblog.account_id]) if status.reblog?
|
|
|
|
return true if Block.where(account_id: receiver_id, target_account_id: check_for_blocks).any?
|
|
|
|
if status.reply? && !status.in_reply_to_account_id.nil? # Filter out if it's a reply
|
|
should_filter = !Follow.where(account_id: receiver_id, target_account_id: status.in_reply_to_account_id).exists? # and I'm not following the person it's a reply to
|
|
should_filter &&= !(receiver_id == status.in_reply_to_account_id) # and it's not a reply to me
|
|
should_filter &&= !(status.account_id == status.in_reply_to_account_id) # and it's not a self-reply
|
|
return should_filter
|
|
elsif status.reblog? # Filter out a reblog
|
|
return Block.where(account_id: status.reblog.account_id, target_account_id: receiver_id).exists? # or if the author of the reblogged status is blocking me
|
|
end
|
|
|
|
false
|
|
end
|
|
|
|
def filter_from_mentions?(status, receiver_id)
|
|
check_for_blocks = [status.account_id]
|
|
check_for_blocks.concat(status.mentions.pluck(:account_id))
|
|
check_for_blocks.concat([status.in_reply_to_account]) if status.reply? && !status.in_reply_to_account_id.nil?
|
|
|
|
should_filter = receiver_id == status.account_id # Filter if I'm mentioning myself
|
|
should_filter ||= Block.where(account_id: receiver_id, target_account_id: check_for_blocks).any? # or it's from someone I blocked, in reply to someone I blocked, or mentioning someone I blocked
|
|
should_filter ||= (status.account.silenced? && !Follow.where(account_id: receiver_id, target_account_id: status.account_id).exists?) # of if the account is silenced and I'm not following them
|
|
|
|
should_filter
|
|
end
|
|
end
|