Keep references to all reblogs of a status on home feed (#5419)

* Keep references to all reblogs of a status on home feed

When inserting reblog: Add to set of reblogs of this status on
the feed, if original status was present in the feed, add it to
that set as well.

When removing a reblog: Remove it from that set. Take random
remaining item from the set. If one exists, re-insert it into feed,
otherwise do not re-insert anything.

Fix #4210

* When original is removed, toss out reblog references
th-downstream
Eugen Rochko 7 years ago committed by GitHub
parent 6645e8ed40
commit 7571d79c8d

@ -174,13 +174,19 @@ class FeedManager
# either action is appropriate.
def add_to_feed(timeline_type, account, status)
timeline_key = key(timeline_type, account.id)
reblog_key = key(timeline_type, account.id, 'reblogs')
reblog_key = key(timeline_type, account.id, 'reblogs')
if status.reblog?
reblog_set_key = key(timeline_type, account.id, "reblogs:#{status.reblog_of_id}")
# If the original status or a reblog of it is within
# REBLOG_FALLOFF statuses from the top, do not re-insert it into
# the feed
rank = redis.zrevrank(timeline_key, status.reblog_of_id)
redis.sadd(reblog_set_key, status.reblog_of_id) unless rank.nil?
redis.sadd(reblog_set_key, status.id)
return false if !rank.nil? && rank < FeedManager::REBLOG_FALLOFF
reblog_rank = redis.zrevrank(reblog_key, status.reblog_of_id)
@ -201,7 +207,7 @@ class FeedManager
# do so if appropriate.
def remove_from_feed(timeline_type, account, status)
timeline_key = key(timeline_type, account.id)
reblog_key = key(timeline_type, account.id, 'reblogs')
reblog_key = key(timeline_type, account.id, 'reblogs')
if status.reblog?
# 1. If the reblogging status is not in the feed, stop.
@ -211,13 +217,21 @@ class FeedManager
# 2. Remove the reblogged status from the `:reblogs` zset.
redis.zrem(reblog_key, status.reblog_of_id)
# 3. Add the reblogged status to the feed.
# Note that we can't use old score in here
# and it must be an ID of corresponding status
# because we need to filter timeline by status ID.
redis.zadd(timeline_key, status.reblog_of_id, status.reblog_of_id)
# 3. Remove reblog from set of this status's reblogs, and
# re-insert another reblog or original into the feed if
# one remains in the set
reblog_set_key = key(timeline_type, account.id, "reblogs:#{status.reblog_of_id}")
redis.srem(reblog_set_key, status.id)
other_reblog = redis.srandmember(reblog_set_key)
redis.zadd(timeline_key, other_reblog, other_reblog) if other_reblog
# 4. Remove the reblogging status from the feed (as normal)
# (outside conditional)
else
# If the original is getting deleted, no use for reblog references
redis.del(key(timeline_type, account.id, "reblogs:#{status.id}"))
end
redis.zrem(timeline_key, status.id)

@ -6,8 +6,9 @@ class Scheduler::FeedCleanupScheduler
def perform
redis.pipelined do
inactive_users.pluck(:account_id).each do |account_id|
inactive_users.each do |account_id|
redis.del(FeedManager.instance.key(:home, account_id))
redis.del(FeedManager.instance.key(:home, account_id, 'reblogs'))
end
end
end
@ -15,7 +16,7 @@ class Scheduler::FeedCleanupScheduler
private
def inactive_users
User.confirmed.inactive
@inactive_users ||= User.confirmed.inactive.pluck(:account_id)
end
def redis

@ -231,36 +231,66 @@ RSpec.describe FeedManager do
end
describe '#unpush' do
it 'leaves a reblogged status when deleting the reblog' do
account = Fabricate(:account)
reblogged = Fabricate(:status, id: Mastodon::Snowflake.id_at(2.day.ago.utc))
other_status = Fabricate(:status, id: Mastodon::Snowflake.id_at(1.day.ago.utc))
status = Fabricate(:status, reblog: reblogged)
let(:receiver) { Fabricate(:account) }
FeedManager.instance.push('type', account, other_status)
FeedManager.instance.push('type', account, status)
it 'leaves a reblogged status if original was on feed' do
reblogged = Fabricate(:status)
status = Fabricate(:status, reblog: reblogged)
FeedManager.instance.push('type', receiver, reblogged)
FeedManager::REBLOG_FALLOFF.times { FeedManager.instance.push('type', receiver, Fabricate(:status)) }
FeedManager.instance.push('type', receiver, status)
# The reblogging status should show up under normal conditions.
expect(Redis.current.zrange("feed:type:#{account.id}", 0, -1)).to eq [other_status.id.to_s, status.id.to_s]
expect(Redis.current.zrange("feed:type:#{receiver.id}", 0, -1)).to include(status.id.to_s)
FeedManager.instance.unpush('type', account, status)
FeedManager.instance.unpush('type', receiver, status)
# Because we couldn't tell if the status showed up any other way,
# we had to stick the reblogged status in by itself.
# And it must be ordered by status ids.
expect(Redis.current.zrange("feed:type:#{account.id}", 0, -1)).to eq [reblogged.id.to_s, other_status.id.to_s]
# Restore original status
expect(Redis.current.zrange("feed:type:#{receiver.id}", 0, -1)).to_not include(status.id.to_s)
expect(Redis.current.zrange("feed:type:#{receiver.id}", 0, -1)).to include(reblogged.id.to_s)
end
it 'removes a reblogged status if it was only reblogged once' do
reblogged = Fabricate(:status)
status = Fabricate(:status, reblog: reblogged)
FeedManager.instance.push('type', receiver, status)
# The reblogging status should show up under normal conditions.
expect(Redis.current.zrange("feed:type:#{receiver.id}", 0, -1)).to eq [status.id.to_s]
FeedManager.instance.unpush('type', receiver, status)
expect(Redis.current.zrange("feed:type:#{receiver.id}", 0, -1)).to be_empty
end
it 'leaves a reblogged status if another reblog was in feed' do
reblogged = Fabricate(:status)
status = Fabricate(:status, reblog: reblogged)
another_status = Fabricate(:status, reblog: reblogged)
FeedManager.instance.push('type', receiver, status)
FeedManager.instance.push('type', receiver, another_status)
# The reblogging status should show up under normal conditions.
expect(Redis.current.zrange("feed:type:#{receiver.id}", 0, -1)).to eq [status.id.to_s]
FeedManager.instance.unpush('type', receiver, status)
expect(Redis.current.zrange("feed:type:#{receiver.id}", 0, -1)).to eq [another_status.id.to_s]
end
it 'sends push updates' do
account = Fabricate(:account)
status = Fabricate(:status)
FeedManager.instance.push('type', account, status)
status = Fabricate(:status)
FeedManager.instance.push('type', receiver, status)
allow(Redis.current).to receive_messages(publish: nil)
FeedManager.instance.unpush('type', account, status)
FeedManager.instance.unpush('type', receiver, status)
deletion = Oj.dump(event: :delete, payload: status.id.to_s)
expect(Redis.current).to have_received(:publish).with("timeline:#{account.id}", deletion)
expect(Redis.current).to have_received(:publish).with("timeline:#{receiver.id}", deletion)
end
end
end

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