65 lines
		
	
	
		
			1.4 KiB
		
	
	
	
		
			Ruby
		
	
	
	
	
	
			
		
		
	
	
			65 lines
		
	
	
		
			1.4 KiB
		
	
	
	
		
			Ruby
		
	
	
	
	
	
# frozen_string_literal: true
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class Scheduler::FeedCleanupScheduler
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  include Sidekiq::Worker
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  sidekiq_options unique: :until_executed
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  def perform
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    clean_home_feeds!
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    clean_list_feeds!
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  end
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  private
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  def clean_home_feeds!
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    clean_feeds!(inactive_account_ids, :home)
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  end
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  def clean_list_feeds!
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    clean_feeds!(inactive_list_ids, :list)
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  end
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  def clean_feeds!(ids, type)
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    reblogged_id_sets = {}
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    redis.pipelined do
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      ids.each do |feed_id|
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        redis.del(feed_manager.key(type, feed_id))
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        reblog_key = feed_manager.key(type, feed_id, 'reblogs')
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        # We collect a future for this: we don't block while getting
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        # it, but we can iterate over it later.
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        reblogged_id_sets[feed_id] = redis.zrange(reblog_key, 0, -1)
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        redis.del(reblog_key)
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      end
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    end
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    # Remove all of the reblog tracking keys we just removed the
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    # references to.
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    redis.pipelined do
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      reblogged_id_sets.each do |feed_id, future|
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        future.value.each do |reblogged_id|
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          reblog_set_key = feed_manager.key(type, feed_id, "reblogs:#{reblogged_id}")
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          redis.del(reblog_set_key)
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        end
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      end
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    end
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  end
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  def inactive_account_ids
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    @inactive_account_ids ||= User.confirmed.inactive.pluck(:account_id)
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  end
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  def inactive_list_ids
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    List.where(account_id: inactive_account_ids).pluck(:id)
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  end
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  def feed_manager
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    FeedManager.instance
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  end
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  def redis
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    Redis.current
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  end
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end
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