如何手动运行发条作业？

Question

Title says it all really.

Is it possible to run Clockwork jobs manually? Eg if I have a clock.rb file

module Clockwork
  every(15.minutes, 'api.sync_shifts') do
    Shift.sync
  end

  on(:after_run) do |event, t|
    REDIS.hset("clockwork:last_run", event.job, t)
  end
end

I'd like to be able to call something like Clockwork.run('api.sync_shifts') .

I looked through the clockwork source and didn't see anything useful. Obviously, I can run, in this example, the Shift.sync method manually, but then I'd lose my after_run/before_run callbacks that I'm using to monitor my job statuses.

Answer 1

No, this is not possible.

This is the relevant method in the clockwork gem that handles callbacks and runs configured events:

def tick(t=Time.now)
  if (fire_callbacks(:before_tick))
    events = events_to_run(t)
    events.each do |event|
      if (fire_callbacks(:before_run, event, t))
        event.run(t)
        fire_callbacks(:after_run, event, t)
      end
    end
  end
  fire_callbacks(:after_tick)
  events
end

This method loads all events that should run at the current time (returned from the events_to_run method). It iterates over all events in events_to_run and fires callbacks and runs the event .

To be able to run individual events and still have all callbacks fired, this method would need to change to something like this:

def tick(t=Time.now)
  if (fire_callbacks(:before_tick))
    events = events_to_run(t)
    events.each do |event|
      run_event_with_callbacks(event)
    end
  end
  fire_callbacks(:after_tick)
  events
end

def run_event_with_callbacks(event)
  if (fire_callbacks(:before_run, event, t))
    event.run(t)
      fire_callbacks(:after_run, event, t)
    end
  end
end

That would allow running individual events with firing callbacks. Furthermore, you would need a method to load an individual event. Perhaps something like this:

def load_event(job)
  # finds only the first event when there are multiple 
  # events registered for the same job
  @events.find { |event| event.job == job }
end

But since the events are registered in a Manager , you would need an instance of a manager which is correctly initialized with all events defined in the config.

To keep a long story short: This is not possible at the moment and it would need many changes to the structure of the code to make that possible.