Merge branch 'master' into feature-private-federation

app/models/account.rb

@@ -135,6 +135,10 @@ class Account < ApplicationRecord
     !subscription_expires_at.blank?
   end
 
+  def followers_domains
+    followers.reorder(nil).pluck('distinct accounts.domain')
+  end
+
   def favourited?(status)
     status.proper.favourites.where(account: self).count.positive?
   end

app/workers/pubsubhubbub/distribution_worker.rb

@@ -8,12 +8,14 @@ class Pubsubhubbub::DistributionWorker
   def perform(stream_entry_id)
     stream_entry = StreamEntry.find(stream_entry_id)
 
-    return if stream_entry.hidden?
+    return if stream_entry.status.direct_visibility?
 
     account = stream_entry.account
     payload = AtomSerializer.render(AtomSerializer.new.feed(account, [stream_entry]))
+    domains = account.followers_domains
 
     Subscription.where(account: account).active.select('id, callback_url').find_each do |subscription|
+      next unless domains.include?(Addressable::URI.parse(subscription.callback_url).host)
       Pubsubhubbub::DeliveryWorker.perform_async(subscription.id, payload)
     end
   rescue ActiveRecord::RecordNotFound