Class: LoadRampUp

Inherits:
Object
  • Object
show all
Defined in:
lib/wasp/load_ramp_up.rb

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(run_id, target_code, configuration) ⇒ LoadRampUp

Returns a new instance of LoadRampUp.



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# File 'lib/wasp/load_ramp_up.rb', line 10

def initialize(run_id, target_code, configuration)
  puts "Load Ramp Up created"
  if (run_id == nil)
  end
  @pids = []
  @run_id = run_id
  @target_code = target_code
  @factory = TestFactory.new
  @tests = {}
  @all_tests = []
  @configuration = configuration
  wasp_id = 0
  
  @configuration[:tests].each do |test_config|
    test_class = test_config[:test]
    
    initial_count = test_config[:initial]
    ramp_up_config = test_config[:ramp_up]
    final_count = ramp_up_config[:final]
    @tests[test_class] = []
    while (@tests[test_class].length < final_count)
      #                       (run_id, node_id, wasp_id, test, schedule_events, messenger)
      test = @factory.create_test(test_class, @target_code, test_config)
      load_test = LoadTest.new(self, run_id, nil, wasp_id, test, test_config, messenger)
      wasp_id += 1
      @tests[test_class] << load_test
      @all_tests << load_test
    end
    assign_schedules_to_tests(test_config,  @tests[test_class])
  end
  send_schedule_to_server(@configuration)
end

Instance Attribute Details

#tests ⇒ Object (readonly)

Returns the value of attribute tests.



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# File 'lib/wasp/load_ramp_up.rb', line 7

def tests
  @tests
end

Instance Method Details

#assign_schedules_to_tests(test_config, load_tests) ⇒ Object 



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# File 'lib/wasp/load_ramp_up.rb', line 85

def assign_schedules_to_tests(test_config, load_tests)
  ramp_up = test_config[:ramp_up]
  initial_count = test_config[:initial]
  
  load_tests.each do |test|
    test.schedule.add(0, :pause)
  end
  
  (0..initial_count - 1).each do |index|
    test = load_tests[index]
    test.schedule.add(0, :run)
  end
  
  rate = ramp_up[:rate]
  current_time = 0
  tests_started = initial_count
   while (tests_started < ramp_up[:final]) do
     current_time += rate
     load_tests[tests_started].schedule.add(current_time, :run)
     tests_started += 1
   end
   
   sustain_time = test_config[:sustain]
   current_time += sustain_time
   
   ramp_down = test_config[:ramp_down]
   final_count = ramp_down[:final]
   rate = ramp_down[:rate]
   while (tests_started > final_count) do
     load_tests[tests_started - 1].schedule.add(current_time, :pause)
     tests_started -= 1
     current_time += rate
   end
end

#duration ⇒ Object 



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# File 'lib/wasp/load_ramp_up.rb', line 58

def duration
  last_time = 0
  @all_tests.each do |test|
    test_last_time = test.duration
    if (test_last_time > last_time)
      last_time = test_last_time
    end
  end
  return last_time
end

#find_total_loads ⇒ Object 



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# File 'lib/wasp/load_ramp_up.rb', line 70

def find_total_loads
  load_at_times
  time = 0
  while (!done) do
    count = 0
    @all_tests.each do |test|
      if (test.current_action(time) == :run)
        count += 1
      end
    end
    time += 1
  end
end

#kill_pids(pids) ⇒ Object 



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# File 'lib/wasp/load_ramp_up.rb', line 152

def kill_pids(pids)
  puts "Killing child processes"
  pids.each do |pid|
    Process.kill("INT", pid)
  end
end

#run ⇒ Object 



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# File 'lib/wasp/load_ramp_up.rb', line 122

def run
  begin
     puts "Running Load test"
     @configuration[:tests].each do |test_config|
       test_name = test_config[:name]
       puts "Starting test: #{test_name}"
       @tests[test_name].each do |load_test|
         @pids << fork {
           #puts "Launching test: #{test_name} : #{load_test.wasp_id}"
           load_test.run
         }
       end
     end
     wait_for_kill_signal()
  rescue Interrupt => e
    puts "Interrupt signal received, quitting.  [#{e.class.name}]   #{e.message}"
  ensure
    kill_pids(@pids)
  end
  exit 0
end

#send_schedule_to_server(configuration) ⇒ Object 



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# File 'lib/wasp/load_ramp_up.rb', line 44

def send_schedule_to_server(configuration)
  (0..duration).each do |time|
    total_load = 0
    @all_tests.each do |test|
      action = test.schedule.current_action(time)
      if (action == :run)
        total_load += 1
      end
    end    
    report_load_to_server(@run_id, time, total_load)
  end
end

#wait_for_kill_signal ⇒ Object 



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# File 'lib/wasp/load_ramp_up.rb', line 145

def wait_for_kill_signal()
  while (true) do
    sleep 2000
  end
end