module Retrying

# File lib/retrying.rb, line 4
def retrying(options = {}, &block)
  options = { :on => StandardError, :tries => 2, :sleep => 0 }.merge(options)
  exceptions = Array(options[:on])

  attempts = 0
  begin
    yield
  rescue *exceptions => ex
    attempts += 1
    raise if attempts >= options[:tries]
    sleep(options[:sleep]) if options[:sleep] > 0
    retry
  end
end