DelayedCron

run cron jobs with sidekiq, delayed_job, resque, or sucker_punch

DEPENDENCIES:

• background process handler: sidekiq, delayed_job, resque, or sucker_punch

INSTALL

gem "delayed_cron", "0.2.6"

USE IN MODEL

class Product < ActiveRecord::Base

  ...

  # Define in Model
  # * this is an alternative to the cron_jobs array in config
  #
  # OPTIONS: *optional
  # - interval - override default_inteveral from setup
  # - at       - set time of day the cron should be run, timezone and seconds are optional
  cron_job :some_method_to_run_as_cron, interval: 3.days, at: "00:00:00 -0400"

  def self.some_method_to_run_as_cron
    # this method will be run every 3 days at midnight
  end

  ...

end

CONFIGURE

DelayedCron.setup do |config|

  # default interval to run cron jobs
  config.default_interval = 10.minutes

  # array of methods to run at the above configured interval
  config.cron_jobs = [
    "SomeClass.expensive_task", # will run at default interval
    { job: "AnotherClass.other_expensive_task", interval: 1.hour } # override default
  ]

end

NOTES:

• when using with sidekiq and rails there can be a config/initializer load order issue. Below is a fix to insure sidekiq is loaded first ruby Rails.application.config.after_initialize do DelayedCron.setup do |config| ... end end This initializes dealyed cron after all other initializers have loaded.

TO DO:

• add support for Resque