Module: Delayed::Workless::Scaler

Defined in:
lib/workless/scaler.rb,
lib/workless/scalers/base.rb,
lib/workless/scalers/null.rb,
lib/workless/scalers/local.rb,
lib/workless/scalers/heroku.rb,
lib/workless/scalers/heroku_cedar.rb

Defined Under Namespace

Modules: ClassMethods, HerokuClient Classes: Base, Heroku, HerokuCedar, Local, Null

Class Method Summary collapse

Class Method Details

.included(base) ⇒ Object 



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# File 'lib/workless/scaler.rb', line 10

def self.included(base)
  base.send :extend, ClassMethods
  if base.to_s =~ /ActiveRecord/
    base.class_eval do
      after_commit "self.class.scaler.down", :on => [:destroy, :update], :if => Proc.new {|r| r.destroyed? or !r.failed_at.nil? }
      after_commit "self.class.scaler.up", :on => :create
    end          
  elsif base.to_s =~ /Sequel/
    base.send(:define_method, 'after_destroy') do
      super
      self.class.scaler.down
    end
    base.send(:define_method, 'after_create') do
      super
      self.class.scaler.up
    end
    base.send(:define_method, 'after_update') do
      super
      self.class.scaler.down
    end
  else
    base.class_eval do
      after_destroy "self.class.scaler.down"
      after_create "self.class.scaler.up"
      after_update "self.class.scaler.down", :unless => Proc.new {|r| r.failed_at.nil? }
    end
  end
end