masto-fe/app/lib/activitypub/activity/move.rb
ThibG a044ddac5b
Fix race conditions on account migration creation (#15597)
* Atomically check for processing lock in Move handler

* Prevent race condition when creating account migrations

Fixes #15595

* Add tests

Co-authored-by: Claire <claire.github-309c@sitedethib.com>
2021-02-02 14:49:57 +01:00

44 lines
1.1 KiB
Ruby

# frozen_string_literal: true
class ActivityPub::Activity::Move < ActivityPub::Activity
PROCESSING_COOLDOWN = 7.days.seconds
def perform
return if origin_account.uri != object_uri
return unless mark_as_processing!
target_account = ActivityPub::FetchRemoteAccountService.new.call(target_uri)
if target_account.nil? || target_account.suspended? || !target_account.also_known_as.include?(origin_account.uri)
unmark_as_processing!
return
end
# In case for some reason we didn't have a redirect for the profile already, set it
origin_account.update(moved_to_account: target_account)
# Initiate a re-follow for each follower
MoveWorker.perform_async(origin_account.id, target_account.id)
rescue
unmark_as_processing!
raise
end
private
def origin_account
@account
end
def target_uri
value_or_id(@json['target'])
end
def mark_as_processing!
redis.set("move_in_progress:#{@account.id}", true, nx: true, ex: PROCESSING_COOLDOWN)
end
def unmark_as_processing!
redis.del("move_in_progress:#{@account.id}")
end
end