module RubyJmeter

  class GCThroughputShapingTimer
    attr_accessor :doc
    include Helper
    def initialize(name, steps, params={})
      @doc = Nokogiri::XML(<<-EOF.strip_heredoc)
        <kg.apc.jmeter.timers.VariableThroughputTimer guiclass="kg.apc.jmeter.timers.VariableThroughputTimerGui" testclass="kg.apc.jmeter.timers.VariableThroughputTimer" testname="#{name}" enabled="true">
          <collectionProp name="load_profile"/>
        </kg.apc.jmeter.timers.VariableThroughputTimer>
      EOF
      steps.each_with_index do |step, index|
        @doc.at_xpath('//collectionProp') << 
          Nokogiri::XML(<<-EOF.strip_heredoc).children
            <collectionProp name="step_#{index}">
              <stringProp name="start_rps_#{index}">#{step[:start_rps]}</stringProp>
              <stringProp name="end_rps_#{index}">#{step[:end_rps]}</stringProp>
              <stringProp name="duration_sec_#{index}">#{step[:duration]}</stringProp>
            </collectionProp>
          EOF
      end
      update params
    end
  end  

end