Adding callbacks to a base class

[iconnor]

If you add the before_start and other callbacks to a base class, then inherit that to a worker, it will not trigger the callbacks.

You have to prepend Sqeduler::Worker::Callbacks on each child class. It would be nice to have it work on the base class also so we can reduce duplication.

There is a work around: that is to prepend and then include the before_start and other callbacks from a module.

So this:

class AwardWorker < BaseWorker
  prepend Sqeduler::Worker::Callbacks
  include Logging::Callbacks
etc. for each class

Instead of this just once:

class BaseWorker
  prepend Sqeduler::Worker::Callbacks
  include Logging::Callbacks

Logging::Callbacks is where the private method before_start is found.