Class: Rack::MiniProfiler::ClientTimerStruct

Inherits:
TimerStruct
  • Object
show all
Defined in:
lib/mini_profiler/client_timer_struct.rb

Overview

This class holds the client timings

Class Method Summary collapse

Instance Method Summary collapse

Methods inherited from TimerStruct

#[], #[]=, #attributes, #to_json

Constructor Details

#initialize(env = {}) ⇒ ClientTimerStruct

Returns a new instance of ClientTimerStruct.



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# File 'lib/mini_profiler/client_timer_struct.rb', line 22

def initialize(env={})
  super
end

Class Method Details

.init_from_form_data(env, page_struct) ⇒ Object 



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# File 'lib/mini_profiler/client_timer_struct.rb', line 26

def self.init_from_form_data(env, page_struct)
  timings = []
  clientTimes, clientPerf, baseTime = nil 
  form = env['rack.request.form_hash']

  clientPerf = form['clientPerformance'] if form 
  clientTimes = clientPerf['timing'] if clientPerf 

  baseTime = clientTimes['navigationStart'].to_i if clientTimes
  return unless clientTimes && baseTime 

  probes = form['clientProbes']
  translated = {}
  if probes && !["null", ""].include?(probes)
    probes.each do |id, val|
      name = val["n"]
      translated[name] ||= {} 
      if translated[name][:start]
        translated[name][:finish] = val["d"]
      else 
        translated[name][:start] = val["d"]
      end
    end
  end

  translated.each do |name, data|
    h = {"Name" => name, "Start" => data[:start].to_i - baseTime}
    h["Duration"] = data[:finish].to_i - data[:start].to_i if data[:finish]
    timings.push(h)
  end

  clientTimes.keys.find_all{|k| k =~ /Start$/ }.each do |k|
    start = clientTimes[k].to_i - baseTime 
    finish = clientTimes[k.sub(/Start$/, "End")].to_i - baseTime
    duration = 0 
    duration = finish - start if finish > start 
    name = k.sub(/Start$/, "").split(/(?=[A-Z])/).map{|s| s.capitalize}.join(' ')
    timings.push({"Name" => name, "Start" => start, "Duration" => duration}) if start >= 0
  end

  clientTimes.keys.find_all{|k| !(k =~ /(End|Start)$/)}.each do |k|
    timings.push("Name" => k, "Start" => clientTimes[k].to_i - baseTime, "Duration" => -1)
  end

  rval = self.new
  rval['RedirectCount'] = env['rack.request.form_hash']['clientPerformance']['navigation']['redirectCount']
  rval['Timings'] = timings
  rval
end

.init_instrumentation ⇒ Object 



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# File 'lib/mini_profiler/client_timer_struct.rb', line 9

def self.init_instrumentation
  "<script type=\"text/javascript\">mPt=function(){var t=[];return{t:t,probe:function(n){t.push({d:new Date(),n:n})}}}()</script>"
end

.instrument(name, orig) ⇒ Object 



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# File 'lib/mini_profiler/client_timer_struct.rb', line 13

def self.instrument(name,orig)
  probe = "<script>mPt.probe('#{name}')</script>"
  wrapped = probe
  wrapped << orig 
  wrapped << probe 
  wrapped
end