Class: FrontEndLoader::Screen

Inherits:
Object
  • Object
show all
Defined in:
lib/front_end_loader/screen.rb

Constant Summary collapse

POSITIONS = 
{
  :count => 0,
  :average_time => 11,
  :max_time => 22,
  :errors => 33,
  :error_percent => 44,
  :throughput => 55
}
LENGTHS = 
{
  :count => 9,
  :average_time => 9,
  :max_time => 9,
  :errors => 9,
  :error_percent => 9,
  :throughput => 12
}
TOTAL_LENGTH = 
66

Instance Method Summary collapse

Constructor Details

#initialize(experiment) ⇒ Screen

Returns a new instance of Screen.



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# File 'lib/front_end_loader/screen.rb', line 26

def initialize(experiment)
  @experiment = experiment
  @entry_count = nil
  @longest_name = 0
  Curses.init_screen
  Curses.nonl
  Curses.cbreak
  Curses.noecho
end

Instance Method Details

#clear_line(line, first_position) ⇒ Object 



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# File 'lib/front_end_loader/screen.rb', line 137

def clear_line(line, first_position)
  Curses.setpos(line, first_position + POSITIONS[:count])
  Curses.addstr(' ' * LENGTHS[:count])
  Curses.setpos(line, first_position + POSITIONS[:average_time])
  Curses.addstr(' ' * LENGTHS[:average_time])
  Curses.setpos(line, first_position + POSITIONS[:max_time])
  Curses.addstr(' ' * LENGTHS[:max_time])
  Curses.setpos(line, first_position + POSITIONS[:errors])
  Curses.addstr(' ' * LENGTHS[:error_percent])
  Curses.setpos(line, first_position + POSITIONS[:error_percent])
  Curses.addstr(' ' * LENGTHS[:error_percent])
  Curses.setpos(line, first_position + POSITIONS[:throughput])
  Curses.addstr(' ' * LENGTHS[:throughput])
end

#close ⇒ Object 



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# File 'lib/front_end_loader/screen.rb', line 206

def close
  Curses.curs_set(1)
  Curses::close_screen
end

#divider_string ⇒ Object 



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# File 'lib/front_end_loader/screen.rb', line 201

def divider_string
  first_position = '|' + (' ' * (@longest_name + 2))
  first_position + '|          |          |          |          |          |             |'
end

#draw_outlines(names) ⇒ Object 



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# File 'lib/front_end_loader/screen.rb', line 157

def draw_outlines(names)
  first_position = @longest_name + 6
  Curses.clear
  Curses.setpos(0, 2)
  Curses.addstr('-' * (first_position + TOTAL_LENGTH))
  Curses.setpos(1, 1)
  Curses.addstr(divider_string)
  Curses.setpos(1, 3)
  Curses.addstr('call')
  Curses.setpos(1, first_position + POSITIONS[:count])
  Curses.addstr('count')
  Curses.setpos(1, first_position + POSITIONS[:average_time])
  Curses.addstr('avg time')
  Curses.setpos(1, first_position + POSITIONS[:max_time])
  Curses.addstr('max time')
  Curses.setpos(1, first_position + POSITIONS[:errors])
  Curses.addstr('errors')
  Curses.setpos(1, first_position + POSITIONS[:error_percent])
  Curses.addstr('error %')
  Curses.setpos(1, first_position + POSITIONS[:throughput])
  Curses.addstr('throughput')
  Curses.setpos(2, 2)
  Curses.addstr('-' * (first_position + TOTAL_LENGTH))
  line = 3
  names.each do |name|
    Curses.setpos(line, 1)
    Curses.addstr(divider_string)
    Curses.setpos(line, 3)
    Curses.addstr(name)
    line += 1
  end
  Curses.setpos(line, 1)
  Curses.addstr(divider_string)
  line += 1
  Curses.setpos(line, 1)
  Curses.addstr(divider_string)

  Curses.setpos(line, 3)
  Curses.addstr('TOTAL')
  line += 1
  Curses.setpos(line, 2)
  Curses.addstr('-' * (first_position + TOTAL_LENGTH))
end

#erase_line(line) ⇒ Object 



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# File 'lib/front_end_loader/screen.rb', line 152

def erase_line(line)
  Curses.setpos(line, 0)
  Curses.addstr(' ' * TOTAL_LENGTH)
end

#refresh ⇒ Object 



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# File 'lib/front_end_loader/screen.rb', line 36

def refresh
  run_start_time = nil
  names = nil
  counts_by_name = {}
  times_by_name = {}
  average_times_by_name = {}
  max_times_by_name = {}
  error_counts_by_name = {}
  error_counts_by_type = {}
  error_percents_by_name = {}
  throughput_by_name = {}
  total_calls = nil
  total_time = nil
  total_errors = nil
  delta = nil
  max_max_time = nil

  @experiment.synchronize do
    return if !@experiment.running || @experiment.call_counts.empty?

    run_start_time = @experiment.run_start_time.dup
    names = @experiment.call_counts.keys.dup

    counts_by_name = @experiment.call_counts
    times_by_name = @experiment.total_times
    average_times_by_name = @experiment.average_times
    max_times_by_name = @experiment.max_times
    error_counts_by_name = @experiment.error_counts
    error_counts_by_type = @experiment.error_types
    error_percents_by_name = @experiment.error_percents
    throughput_by_name = @experiment.throughput

    total_calls = @experiment.call_counts.values.inject(0) { |s,i| s + i }
    total_time = @experiment.call_times.values.inject(0) { |s,i| s + i }
    total_errors = @experiment.call_error_counts.values.inject(0) { |s,i| s + i }
    max_max_time = (@experiment.call_max_times.values.max || 0).round(3).to_s
    delta = ((@experiment.run_completed_time || Time.now) - @experiment.run_start_time) / 60.0
  end

  if names.count != @entry_count
    @entry_count = names.length
    @longest_name = names.map(&:length).max
    draw_outlines(names)
  end

  first_position = @longest_name + 6
  line = 3
  names.each do |name|
    clear_line(line, first_position)
    Curses.setpos(line, first_position + POSITIONS[:count])
    Curses.addstr(counts_by_name[name].to_s)
    Curses.setpos(line, first_position + POSITIONS[:average_time])
    Curses.addstr(average_times_by_name[name].round(3).to_s)
    Curses.setpos(line, first_position + POSITIONS[:max_time])
    Curses.addstr(max_times_by_name[name].round(3).to_s)
    Curses.setpos(line, first_position + POSITIONS[:errors])
    Curses.addstr(error_counts_by_name[name].to_s)
    Curses.setpos(line, first_position + POSITIONS[:error_percent])
    Curses.addstr(error_percents_by_name[name].round(3).to_s)
    Curses.setpos(line, first_position + POSITIONS[:throughput])
    Curses.addstr(throughput_by_name[name].to_i.to_s)
    line += 1
  end
  line += 1
  clear_line(line, first_position)
  Curses.setpos(line, first_position + POSITIONS[:count])
  Curses.addstr(total_calls.to_s)
  Curses.setpos(line, first_position + POSITIONS[:average_time])
  Curses.addstr((total_time / total_calls.to_f).round(3).to_s)
  Curses.setpos(line, first_position + POSITIONS[:max_time])
  Curses.addstr(max_max_time.to_s)
  Curses.setpos(line, first_position + POSITIONS[:errors])
  Curses.addstr(total_errors.to_s)
  Curses.setpos(line, first_position + POSITIONS[:error_percent])
  Curses.addstr(((total_errors.to_f / total_calls.to_f) * 100.0).round(1).to_s)
  Curses.setpos(line, first_position + POSITIONS[:throughput])
  Curses.addstr((total_calls.to_f / delta).to_i.to_s)

  line += 3
  time = Time.now - run_start_time
  hours = (time / 3600).to_i
  minutes = (time / 60 - (hours * 60)).to_i
  seconds = (time - (minutes * 60 + hours * 3600)).to_i
  Curses.setpos(line, 3)
  Curses.addstr("run time: #{hours}:#{'%02d' % minutes}:#{'%02d' % seconds}")

  line += 2
  error_counts_by_type.each do |type, count|
    erase_line(line)
    Curses.setpos(line, 3)
    Curses.addstr("#{type}: #{count}") 
    line += 1
  end

  Curses.curs_set(0)
  Curses.refresh
rescue StandardError => e
  puts e.message
  puts e.backtrace.first
end

#write_debug(file) ⇒ Object 



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# File 'lib/front_end_loader/screen.rb', line 211

def write_debug(file)
  (0..Curses.lines).each do |line|
    line_string = ''
    (0..Curses.cols).each do |col|
      Curses.setpos(line, col)
      line_string << Curses.inch.chr
    end
    line_string.strip!
    unless line_string.empty?
      file.puts(line_string)
    end
  end
  file.flush
end