Remove wrong Server::Middleware#worker_class override

[vkuznetsov]

I want to run my job once per 10 mins and I created worker like this:

class Workers::MyWorker
  include Sidekiq::Worker
  sidekiq_options unique: :until_timeout, unique_expiration: 10.minutes
end

But lock is removed after job completion.

I found that instead of Lock::UntilTimeout the Lock::UntilExecuted is used.

This line in Server::Middleware overrides the worker_class delegator defined above:

class Middleware
  def_instance_delegator :@worker, :class, :worker_class
  ...
  attr_reader :redis_pool, :worker, :item, :worker_class
end

Because of this in Server::Middleware#options worker_class is nil and @options is set to Sidekiq.default_worker_options insted of specified in my worker:

def options
  @options ||= worker_class.get_sidekiq_options if worker_class.respond_to?(:get_sidekiq_options)
  @options ||= Sidekiq.default_worker_options
  @options ||= {}
  @options &&= @options.stringify_keys
end