class Battman::DSL::EveryBlock

Public Class Methods

new(battman, battery, interval) click to toggle source
# File lib/battman/dsl/every_block.rb, line 5
def initialize(battman, battery, interval)
  @battery = battery
  @interval = interval
  @battman = battman
  @last_values = {}
end

Public Instance Methods

check(attribute, *args, &block) click to toggle source
# File lib/battman/dsl/every_block.rb, line 12
def check(attribute, *args, &block)
  raise ArgumentError.new('no block given') unless block_given?

  unless @battery.respond_to?(attribute)
    raise ArgumentError.new("invalid method #{attribute}")
  end

  last_values_hash = (attribute.hash + args.hash).hash

  task = Proc.new do
    value = @battery.send(attribute, *args)
    block.call(value, @last_values[last_values_hash])
    @last_values[last_values_hash] = value
  end

  @battman.register(@interval, task)
end