From 34118169ace56b31d6d4b26638fb7375171b7796 Mon Sep 17 00:00:00 2001 From: Eugen Rochko Date: Mon, 16 Oct 2017 20:44:31 +0200 Subject: 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 --- app/lib/feed_manager.rb | 28 +++++++++++++++++++++------- 1 file changed, 21 insertions(+), 7 deletions(-) (limited to 'app/lib') diff --git a/app/lib/feed_manager.rb b/app/lib/feed_manager.rb index cc19c1d1a..7f95d7784 100644 --- a/app/lib/feed_manager.rb +++ b/app/lib/feed_manager.rb @@ -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) -- cgit