Module: Gfspark::Graph

Included in:
App
Defined in:
lib/gfspark/graph.rb

Constant Summary collapse

BARS = 
["  ",  "▁", "▂", "▃", "▄", "▅", "▆", "▇", "█" ]
RANGE_DEFS = 
[
  # option, label, y-axis unit
  ["y"   , 'Year (1day avg)'     , :month],
  ["m"   , 'Month (2hour avg)'   , :day  ],
  ["w"   , 'Week (30min avg)'    , :week ],
  ["3d"  , '3 Days (5min avg)'   , :hour ],
  ["s3d" , '3 Days (5min avg)'   , :hour ],
  ["d"   , 'Day (5min avg)'      , :hour ],
  ["sd"  , 'Day (1min avg)'      , :hour ],
  ["8h"  , '8 Hours (5min avg)'  , :hour ],
  ["s8h" , '8 Hours (1min avg)'  , :hour ],
  ["4h"  , '4 Hours (5min avg)'  , :hour ],
  ["s4h" , '4 Hours (1min avg)'  , :hour ],
  ["h"   , 'Hour (5min avg)'     , :min  ],
  ["sh"  , 'Hour (1min avg)'     , :min  ],
  ["n"   , 'Half Day (5min avg)' , :hour ],
  ["sn"  , 'Half Day (1min avg)' , :hour ],
  ["c"   , "Custom (5min avg)"   , :min  ],
  ["sc"  , "Custom (1min avg)"   , :min  ]
]
RANGES = 

      
    

  







  
    

      Instance Method Summary
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Instance Method Details


    
      

  

  
    #axis_unit  ⇒ Object 
  

  

  




  

    
      


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# File 'lib/gfspark/graph.rb', line 92

def axis_unit
  @axis_unit ||= RANGE_DEFS.find{|_| _.first == @options[:t]}.last
end


    		
  





    
      

  

  
    #bar(val, unit, non_fullwidth_font = false)  ⇒ Object 
  

  

  




  

    
      


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# File 'lib/gfspark/graph.rb', line 6

def bar(val, unit, non_fullwidth_font = false)
  n = (val.to_f/unit).ceil
  @height.times.map{|i|
    x = n - (i * 8)
    if x <= 0
      BARS.first
    else
      bar_symbol = if x < 8
        BARS[x]
      else
        BARS.last
      end
      bar_symbol += " " if non_fullwidth_font
      bar_symbol
    end
  }
end


    		
  





    
      

  

  
    #period_title  ⇒ Object 
  

  

  




  

    
      


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# File 'lib/gfspark/graph.rb', line 107

def period_title
  case @options[:t]
    when "c", "sc" then sprintf("%s to %s", @options[:from], @options[:to])
    else RANGES[@options[:t]]
  end
end


    		
  





    
      

  

  
    #range_arg?(t)  ⇒ Boolean 
  

  

  




  

    

  





  

Returns:


    
  
    
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        (Boolean)
      
      
      
    
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# File 'lib/gfspark/graph.rb', line 136

def range_arg?(t)
  RANGES.keys.include? t
end


    		
  





    
      

  

  
    #render(json, summary, url = nil)  ⇒ Object 
  

  

  




  

    
      


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# File 'lib/gfspark/graph.rb', line 35

def render(json, summary, url = nil)
  rows    = json['rows']
  step    = json['step'].to_i
  max     = rows.flatten.compact.max
  max_val = (max / 8).ceil * 8
  unit    = max_val / (@height * 8).to_f

  start_timestamp = json["start_timestamp"].to_i
  end_timestamp   = json["end_timestamp"].to_i
  s = Time.at(start_timestamp).localtime.strftime("%Y-%m-%d %H:%M:%S")
  e = Time.at(end_timestamp  ).localtime.strftime("%Y-%m-%d %H:%M:%S")

  puts "  #{blue(json["column_names"].first)}"
  puts "    #{yellow(url)}"
  puts ""
  puts "    #{period_title}   #{s} - #{e}  step: /#{seconds_to_label(step)}"
  puts ""

  result = []

  rows.flatten.map{|row| bar(row, unit, @options[:non_fullwidth_font])}.transpose.reverse.each_with_index do |row, i|
    i = (@height- i)
    label = i.even? ? sprintf("%.1f", unit * i * 8) : ""
    line = row.join
    if color = @options[:color]
      line = Term::ANSIColor.send(color, line)
    end
    result << "#{sprintf("%10s", label)} |#{line}|"
  end
  puts result.join("\n")

  render_x_axis_labels(rows, start_timestamp, step)

  puts ""

  sums = summary.first.last
  puts "    #{sprintf("cur: %.1f  ave: %.1f  max: %.1f  min %.1f", *sums)}"
end


    		
  





    
      

  

  
    #render_x_axis_labels(rows, start_timestamp, step)  ⇒ Object 
  

  

  




  

    
      


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# File 'lib/gfspark/graph.rb', line 74

def render_x_axis_labels(rows, start_timestamp, step)
  x_axis_labels = rows.length.times.select{|n| n % 4 == 0}. map{|n|
    t = Time.at(start_timestamp + (n * step)).localtime
    sprintf("%-8s", to_axis_label(t))
  }.join
  x_axis_arrows= rows.length.times.select{|n| n % 4 == 0}. map{|n|
    " /      "
  }.join

  case @options[:x_axis_label]
    when "show"
      puts sprintf("%10s%s", "", x_axis_arrows)
      puts sprintf("%10s%s", "", x_axis_labels)
    when "simple"
      puts sprintf("%10s%s", "", x_axis_labels)
   end
end


    		
  





    
      

  

  
    #seconds_to_label(sec)  ⇒ Object 
  

  

  




  

    
      


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# File 'lib/gfspark/graph.rb', line 24

def seconds_to_label(sec)
  t = Time.at(sec).utc
  d, h, m, s = t.day.pred, t.hour, t.min, t.sec
  res = ""
  res += "#{d}day" unless d.zero?
  res += "#{h}h"   unless h.zero? && (d.zero? || (m.zero? && s.zero?))
  res += "#{m}min" unless m.zero? && ((d.zero? && h.zero?) || s.zero?)
  res += "#{s}sec" unless s.zero?
  return res
end


    		
  





    
      

  

  
    #to_axis_label(t)  ⇒ Object 
  

  

  




  

    
      


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# File 'lib/gfspark/graph.rb', line 96

def to_axis_label(t)
  case axis_unit
    when :min   then t.strftime("%M")
    when :hour  then t.strftime("%H:%M")
    when :day   then t.strftime("%d")
    when :week  then t.strftime("%a")
    when :month then t.strftime("%m")
    else             t.strftime("%H:%M")
  end
end