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- # frozen_string_literal: true
- class BatchedRemoveStatusService < BaseService
- include StreamEntryRenderer
- # Delete given statuses and reblogs of them
- # Dispatch PuSH updates of the deleted statuses, but only local ones
- # Dispatch Salmon deletes, unique per domain, of the deleted statuses, but only local ones
- # Remove statuses from home feeds
- # Push delete events to streaming API for home feeds and public feeds
- # @param [Status] statuses A preferably batched array of statuses
- def call(statuses)
- statuses = Status.where(id: statuses.map(&:id)).includes(:account, :stream_entry).flat_map { |status| [status] + status.reblogs.includes(:account, :stream_entry).to_a }
- @mentions = statuses.map { |s| [s.id, s.mentions.includes(:account).to_a] }.to_h
- @tags = statuses.map { |s| [s.id, s.tags.pluck(:name)] }.to_h
- @stream_entry_batches = []
- @salmon_batches = []
- @json_payloads = statuses.map { |s| [s.id, Oj.dump(event: :delete, payload: s.id.to_s)] }.to_h
- @activity_xml = {}
- # Ensure that rendered XML reflects destroyed state
- statuses.each(&:destroy)
- # Batch by source account
- statuses.group_by(&:account_id).each_value do |account_statuses|
- account = account_statuses.first.account
- unpush_from_home_timelines(account, account_statuses)
- unpush_from_list_timelines(account, account_statuses)
- batch_stream_entries(account, account_statuses) if account.local?
- end
- # Cannot be batched
- statuses.each do |status|
- unpush_from_public_timelines(status)
- batch_salmon_slaps(status) if status.local?
- end
- Pubsubhubbub::RawDistributionWorker.push_bulk(@stream_entry_batches) { |batch| batch }
- NotificationWorker.push_bulk(@salmon_batches) { |batch| batch }
- end
- private
- def batch_stream_entries(account, statuses)
- statuses.each do |status|
- @stream_entry_batches << [build_xml(status.stream_entry), account.id]
- end
- end
- def unpush_from_home_timelines(account, statuses)
- recipients = account.followers.local.to_a
- recipients << account if account.local?
- recipients.each do |follower|
- statuses.each do |status|
- FeedManager.instance.unpush_from_home(follower, status)
- end
- end
- end
- def unpush_from_list_timelines(account, statuses)
- account.lists.select(:id, :account_id).each do |list|
- statuses.each do |status|
- FeedManager.instance.unpush_from_list(list, status)
- end
- end
- end
- def unpush_from_public_timelines(status)
- return unless status.public_visibility?
- payload = @json_payloads[status.id]
- redis.pipelined do
- redis.publish('timeline:public', payload)
- redis.publish('timeline:public:local', payload) if status.local?
- @tags[status.id].each do |hashtag|
- redis.publish("timeline:hashtag:#{hashtag}", payload)
- redis.publish("timeline:hashtag:#{hashtag}:local", payload) if status.local?
- end
- end
- end
- def batch_salmon_slaps(status)
- return if @mentions[status.id].empty?
- recipients = @mentions[status.id].map(&:account).reject(&:local?).select(&:ostatus?).uniq(&:domain).map(&:id)
- recipients.each do |recipient_id|
- @salmon_batches << [build_xml(status.stream_entry), status.account_id, recipient_id]
- end
- end
- def redis
- Redis.current
- end
- def build_xml(stream_entry)
- return @activity_xml[stream_entry.id] if @activity_xml.key?(stream_entry.id)
- @activity_xml[stream_entry.id] = stream_entry_to_xml(stream_entry)
- end
- end
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