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Add Fetch All Replies Part 1: Backend (#32615)

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Signed-off-by: sneakers-the-rat <sneakers-the-rat@protonmail.com>
Co-authored-by: jonny <j@nny.fyi>
Co-authored-by: Claire <claire.github-309c@sitedethib.com>
Co-authored-by: Kouhai <66407198+kouhaidev@users.noreply.github.com>
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Jonny Saunders 2025-03-12 02:03:01 -07:00 • committed by GitHub
parent 2fe7172002
commit 46e13dd81c
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18 changed files with 874 additions and 25 deletions
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app/models/concerns/status/fetch_replies_concern.rb Normal file
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# frozen_string_literal: true
module Status::FetchRepliesConcern
extend ActiveSupport::Concern
# enable/disable fetching all replies
FETCH_REPLIES_ENABLED = ENV.key?('FETCH_REPLIES_ENABLED') ? ENV['FETCH_REPLIES_ENABLED'] == 'true' : true
# debounce fetching all replies to minimize DoS
FETCH_REPLIES_COOLDOWN_MINUTES = (ENV['FETCH_REPLIES_COOLDOWN_MINUTES'] || 15).to_i.minutes
FETCH_REPLIES_INITIAL_WAIT_MINUTES = (ENV['FETCH_REPLIES_INITIAL_WAIT_MINUTES'] || 5).to_i.minutes
included do
scope :created_recently, -> { where(created_at: FETCH_REPLIES_INITIAL_WAIT_MINUTES.ago..) }
scope :not_created_recently, -> { where(created_at: ..FETCH_REPLIES_INITIAL_WAIT_MINUTES.ago) }
scope :fetched_recently, -> { where(fetched_replies_at: FETCH_REPLIES_COOLDOWN_MINUTES.ago..) }
scope :not_fetched_recently, -> { where(fetched_replies_at: [nil, ..FETCH_REPLIES_COOLDOWN_MINUTES.ago]) }
scope :should_not_fetch_replies, -> { local.or(created_recently.or(fetched_recently)) }
scope :should_fetch_replies, -> { remote.not_created_recently.not_fetched_recently }
# statuses for which we won't receive update or deletion actions,
# and should update when fetching replies
# Status from an account which either
# a) has only remote followers
# b) has local follows that were created after the last update time, or
# c) has no known followers
scope :unsubscribed, lambda {
remote.merge(
Status.left_outer_joins(account: :followers).where.not(followers_accounts: { domain: nil })
.or(where.not('follows.created_at < statuses.updated_at'))
.or(where(follows: { id: nil }))
)
}
end
def should_fetch_replies?
# we aren't brand new, and we haven't fetched replies since the debounce window
FETCH_REPLIES_ENABLED && !local? && created_at <= FETCH_REPLIES_INITIAL_WAIT_MINUTES.ago && (
fetched_replies_at.nil? || fetched_replies_at <= FETCH_REPLIES_COOLDOWN_MINUTES.ago
)
end
def unsubscribed?
return false if local?
!Follow.joins(:account).exists?(
target_account: account.id,
account: { domain: nil },
created_at: ..updated_at
)
end
end