59 lines
1.6 KiB
Ruby
59 lines
1.6 KiB
Ruby
# frozen_string_literal: true
|
|
|
|
class Feed
|
|
def initialize(type, account)
|
|
@type = type
|
|
@account = account
|
|
end
|
|
|
|
def get(limit, max_id = nil, since_id = nil)
|
|
max_id = '+inf' if max_id.blank?
|
|
since_id = '-inf' if since_id.blank?
|
|
unhydrated = redis.zrevrangebyscore(key, "(#{max_id}", "(#{since_id}", limit: [0, limit], with_scores: true).map(&:last).map(&:to_i)
|
|
|
|
# If we're after most recent items and none are there, we need to precompute the feed
|
|
if unhydrated.empty? && max_id == '+inf' && since_id == '-inf'
|
|
RegenerationWorker.perform_async(@account.id, @type)
|
|
@statuses = Status.send("as_#{@type}_timeline", @account).paginate_by_max_id(limit, nil, nil)
|
|
else
|
|
status_map = cache(unhydrated)
|
|
@statuses = unhydrated.map { |id| status_map[id] }.compact
|
|
end
|
|
|
|
@statuses
|
|
end
|
|
|
|
private
|
|
|
|
def cache(ids)
|
|
raw = Status.where(id: ids).to_a
|
|
uncached_ids = []
|
|
cached_keys_with_value = Rails.cache.read_multi(*raw.map(&:cache_key))
|
|
|
|
raw.each do |status|
|
|
uncached_ids << status.id unless cached_keys_with_value.key?(status.cache_key)
|
|
end
|
|
|
|
unless uncached_ids.empty?
|
|
uncached = Status.where(id: uncached_ids).with_includes.map { |s| [s.id, s] }.to_h
|
|
|
|
uncached.values.each do |status|
|
|
Rails.cache.write(status.cache_key, status)
|
|
end
|
|
end
|
|
|
|
cached = cached_keys_with_value.values.map { |s| [s.id, s] }.to_h
|
|
cached.merge!(uncached) unless uncached_ids.empty?
|
|
|
|
cached
|
|
end
|
|
|
|
def key
|
|
FeedManager.instance.key(@type, @account.id)
|
|
end
|
|
|
|
def redis
|
|
Redis.current
|
|
end
|
|
end
|