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# frozen_string_literal: true
module WaitableWorker
extend ActiveSupport::Concern
class_methods do
# Schedules multiple jobs and waits for them to be completed.
def bulk_perform_and_wait(args_list, timeout: 10)
# Short-circuit: it's more efficient to do small numbers of jobs inline
return bulk_perform_inline(args_list) if args_list.size <= 3
# Don't wait if there's too many jobs to be waited for. Not including the
# waiter allows them to be deduplicated and it skips waiting for jobs that
# are not likely to finish within the timeout. This assumes we can process
# 10 jobs per second:
# https://gitlab.com/gitlab-com/gl-infra/scalability/-/issues/205
return bulk_perform_async(args_list) if args_list.length >= 10 * timeout
waiter = Gitlab::JobWaiter.new(args_list.size, worker_label: self.to_s)
# Point all the bulk jobs at the same JobWaiter. Converts, [[1], [2], [3]]
# into [[1, "key"], [2, "key"], [3, "key"]]
waiting_args_list = args_list.map { |args| [*args, waiter.key] }
bulk_perform_async(waiting_args_list)
waiter.wait(timeout)
end
# Performs multiple jobs directly. Failed jobs will be put into sidekiq so
# they can benefit from retries
def bulk_perform_inline(args_list)
failed = []
args_list.each do |args|
new.perform(*args)
rescue
failed << args
end
bulk_perform_async(failed) if failed.present?
end
end
def perform(*args)
notify_key = args.pop if Gitlab::JobWaiter.key?(args.last)
super(*args)
ensure
Gitlab::JobWaiter.notify(notify_key, jid) if notify_key
end
end
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