Heroku - DelayedJob & Autoscale

Question

Hi

I'm pretty much in wonder of the idea of autoscaling workers on Heroku with this delayed job branch. Only problem is I can't figure out why it won't work.

What I've got thus far:

I've installed the branch as a plugin. Added the two lines of configuration as described in the branch comments:

Delayed::Job.destroy_failed_jobs = false
silence_warnings do
  Delayed::Job.const_set("MAX_ATTEMPTS", 3)
  Delayed::Job.const_set("MAX_RUN_TIME", 5.minutes)
  Delayed::Job.auto_scale = true             # < --- this
  Delayed::Job.auto_scale_manager = :heroku  # < --- and this  
end

I also added a gem rush as was detailed by another branch commenter.

I am returned the error message:

MissingSourceFile (no such file to load -- heroku):

...which I assume is when my application is trying to communicate with heroku's api. How though to resolve this I'm not clear on. Any advice would be very much appreciated.

Answer 1

You need to add the heroku gem to your Gem manifest file (.gems) or your Gemfile.