Make domain block/silence/reject-media code more robust (#13424)

* Split media cleanup from reject-media domain blocks to its own service

* Slightly improve ClearDomainMediaService error handling

* Lower DomainClearMediaWorker to lowest-priority queue

* Do not catch ActiveRecord::RecordNotFound in domain block workers

* Fix DomainBlockWorker spec labels

* Add some specs

* Change domain blocks to immediately mark accounts as suspended

Rather than doing so sequentially, account after account, while cleaning
their data. This doesn't change much about the time the block takes to
complete, but it immediately prevents interaction with the blocked domain,
while up to now, it would only be guaranteed when the process ends.

1 files changed, 3 insertions, 50 deletions

diff --git a/app/services/block_domain_service.rb b/app/services/block_domain_service.rb
index 9f0860674..dc23ef8d8 100644
--- a/app/services/block_domain_service.rb
+++ b/app/services/block_domain_service.rb
@@ -26,59 +26,20 @@ class BlockDomainService < BaseService
       suspend_accounts!
     end
 
-    clear_media! if domain_block.reject_media?
-  end
-
-  def invalidate_association_caches!
-    # Normally, associated models of a status are immutable (except for accounts)
-    # so they are aggressively cached. After updating the media attachments to no
-    # longer point to a local file, we need to clear the cache to make those
-    # changes appear in the API and UI
-    @affected_status_ids.each { |id| Rails.cache.delete_matched("statuses/#{id}-*") }
+    DomainClearMediaWorker.perform_async(domain_block.id) if domain_block.reject_media?
   end
 
   def silence_accounts!
     blocked_domain_accounts.without_silenced.in_batches.update_all(silenced_at: @domain_block.created_at)
   end
 
-  def clear_media!
-    @affected_status_ids = []
-
-    clear_account_images!
-    clear_account_attachments!
-    clear_emojos!
-
-    invalidate_association_caches!
-  end
-
   def suspend_accounts!
-    blocked_domain_accounts.without_suspended.reorder(nil).find_each do |account|
+    blocked_domain_accounts.without_suspended.in_batches.update_all(suspended_at: @domain_block.created_at)
+    blocked_domain_accounts.where(suspended_at: @domain_block.created_at).reorder(nil).find_each do |account|
       SuspendAccountService.new.call(account, reserve_username: true, suspended_at: @domain_block.created_at)
     end
   end
 
-  def clear_account_images!
-    blocked_domain_accounts.reorder(nil).find_each do |account|
-      account.avatar.destroy if account.avatar.exists?
-      account.header.destroy if account.header.exists?
-      account.save
-    end
-  end
-
-  def clear_account_attachments!
-    media_from_blocked_domain.reorder(nil).find_each do |attachment|
-      @affected_status_ids << attachment.status_id if attachment.status_id.present?
-
-      attachment.file.destroy if attachment.file.exists?
-      attachment.type = :unknown
-      attachment.save
-    end
-  end
-
-  def clear_emojos!
-    emojis_from_blocked_domains.destroy_all
-  end
-
   def blocked_domain
     domain_block.domain
   end
@@ -86,12 +47,4 @@ class BlockDomainService < BaseService
   def blocked_domain_accounts
     Account.by_domain_and_subdomains(blocked_domain)
   end
-
-  def media_from_blocked_domain
-    MediaAttachment.joins(:account).merge(blocked_domain_accounts).reorder(nil)
-  end
-
-  def emojis_from_blocked_domains
-    CustomEmoji.by_domain_and_subdomains(blocked_domain)
-  end
 end