playlab.ruby

dynos, apis = {}, {}
dyno, method, api, connect, service = '','','','',''

File.open('sample.log', "r") do |file|
  file.each_line do |line|
    # regular from this http://rubular.com/r/uwuiKelesS
    target_api = /(method=GET path=\/api\/users\/\d+\/(count_pending_messages|get_messages|get_friends_progress|get_friends_score))|(method=(GET|POST) path=\/api\/users\/\d+ )/
    next unless line.match(target_api)
    line.split(': ')[1].split(' ').each do |methods|
      k,v = methods.split('=')
      case k
      when 'dyno'
        dyno = v
      when 'method'
        method = v
      when 'path'
        api = v.gsub(/\/\d+/, '/{user_id}')
      when 'connect'
        connect = v.gsub(/ms/, '').to_i
      when 'service'
        service = v.gsub(/ms/, '').to_i
      end
    end
    # summarize log here
    api_call = "#{method} #{api}"
    apis["#{api_call}"] ||= {}
    apis["#{api_call}"][:call]  ||= 0
    apis["#{api_call}"][:call]    = apis["#{api_call}"][:call]  + 1

    apis["#{api_call}"][:dynos] ||= {}
    apis["#{api_call}"][:dynos][dyno] ||= 0
    apis["#{api_call}"][:dynos][dyno]   = apis["#{api_call}"][:dynos][dyno] + 1

    apis["#{api_call}"][:response_time] ||= {}
    apis["#{api_call}"][:response_time][:raw] ||= []
    apis["#{api_call}"][:response_time][:raw] << connect + service
  end

  # response time mean, median, mode
  apis.each do |k, v|
    v[:dynos][:max] = v[:dynos].max_by{|k,v| v}

    v[:response_time][:raw].sort!
    # Mean
    v[:response_time][:mean]   = v[:response_time][:raw].inject(&:+) / v[:response_time][:raw].length
    # Median
    v[:response_time][:median] = v[:response_time][:raw][(v[:response_time][:raw].length / 2) + (v[:response_time][:raw].length % 2) - 1]
    # Mode
    v[:response_time][:mode]   = v[:response_time][:raw].detect{ |mode| v[:response_time][:raw].count(mode) > 1 }
  end
end

# results
apis.each do |k, v|
  puts "========================================================"
  puts k
  puts "Api Calls: #{v[:call]}"
  puts "Most responded dynos: #{v[:dynos][:max][0]}"
  puts "--- Reponse Time ---"
  puts "Mean: #{v[:response_time][:mean]}ms \t Median: #{v[:response_time][:median]}ms \t Mode: #{v[:response_time][:mode]}ms"
  puts "========================================================"
end