catstodon/app/services/suspend_account_service.rb
Eugen Rochko df1653174b
Add cache buster feature for media files (#15155)
Nginx can be configured to bypass proxy cache when a special header
is in the request. If the response is cacheable, it will replace
the cache for that request. Proxy caching of media files is
desirable when using object storage as a way of minimizing bandwidth
costs, but has the drawback of leaving deleted media files for
a configured amount of cache time. A cache buster can make those
media files immediately unavailable. This especially makes sense
when suspending and unsuspending an account.
2020-11-19 17:38:06 +01:00

87 lines
2.8 KiB
Ruby

# frozen_string_literal: true
class SuspendAccountService < BaseService
include Payloadable
def call(account)
@account = account
suspend!
reject_remote_follows!
distribute_update_actor!
unmerge_from_home_timelines!
unmerge_from_list_timelines!
privatize_media_attachments!
end
private
def suspend!
@account.suspend! unless @account.suspended?
end
def reject_remote_follows!
return if @account.local? || !@account.activitypub?
# When suspending a remote account, the account obviously doesn't
# actually become suspended on its origin server, i.e. unlike a
# locally suspended account it continues to have access to its home
# feed and other content. To prevent it from being able to continue
# to access toots it would receive because it follows local accounts,
# we have to force it to unfollow them. Unfortunately, there is no
# counterpart to this operation, i.e. you can't then force a remote
# account to re-follow you, so this part is not reversible.
follows = Follow.where(account: @account).to_a
ActivityPub::DeliveryWorker.push_bulk(follows) do |follow|
[Oj.dump(serialize_payload(follow, ActivityPub::RejectFollowSerializer)), follow.target_account_id, @account.inbox_url]
end
follows.each(&:destroy)
end
def distribute_update_actor!
ActivityPub::UpdateDistributionWorker.perform_async(@account.id) if @account.local?
end
def unmerge_from_home_timelines!
@account.followers_for_local_distribution.find_each do |follower|
FeedManager.instance.unmerge_from_home(@account, follower)
end
end
def unmerge_from_list_timelines!
@account.lists_for_local_distribution.find_each do |list|
FeedManager.instance.unmerge_from_list(@account, list)
end
end
def privatize_media_attachments!
attachment_names = MediaAttachment.attachment_definitions.keys
@account.media_attachments.find_each do |media_attachment|
attachment_names.each do |attachment_name|
attachment = media_attachment.public_send(attachment_name)
styles = [:original] | attachment.styles.keys
styles.each do |style|
case Paperclip::Attachment.default_options[:storage]
when :s3
attachment.s3_object(style).acl.put(acl: 'private')
when :fog
# Not supported
when :filesystem
begin
FileUtils.chmod(0o600 & ~File.umask, attachment.path(style)) unless attachment.path(style).nil?
rescue Errno::ENOENT
Rails.logger.warn "Tried to change permission on non-existent file #{attachment.path(style)}"
end
end
CacheBusterWorker.perform_async(attachment.path(style)) if Rails.configuration.x.cache_buster_enabled
end
end
end
end
end