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|
# When a user is destroyed, some of their associated records are
# moved to a "Ghost User", to prevent these associated records from
# being destroyed.
#
# For example, all the issues/MRs a user has created are _not_ destroyed
# when the user is destroyed.
module Users
class MigrateToGhostUserService
extend ActiveSupport::Concern
attr_reader :ghost_user, :user
def initialize(user)
@user = user
end
def execute
# Block the user before moving records to prevent a data race.
# For example, if the user creates an issue after `migrate_issues`
# runs and before the user is destroyed, the destroy will fail with
# an exception.
user.block
user.transaction do
@ghost_user = User.ghost
migrate_issues
migrate_merge_requests
migrate_notes
migrate_abuse_reports
migrate_award_emoji
end
user.reload
end
private
def migrate_issues
user.issues.update_all(author_id: ghost_user.id)
end
def migrate_merge_requests
user.merge_requests.update_all(author_id: ghost_user.id)
end
def migrate_notes
user.notes.update_all(author_id: ghost_user.id)
end
def migrate_abuse_reports
user.reported_abuse_reports.update_all(reporter_id: ghost_user.id)
end
def migrate_award_emoji
user.award_emoji.update_all(user_id: ghost_user.id)
end
end
end
|
