Class: Rack::MiniProfiler::TimerStruct::Client

Inherits:
Base
  • Object
show all
Defined in:
lib/mini_profiler/timer_struct/client.rb

Overview

This class holds the client timings

Class Method Summary collapse

Instance Method Summary collapse

Methods inherited from Base

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

Constructor Details

#initialize(env = {}) ⇒ Client

Returns a new instance of Client.



26
27
28
 
# File 'lib/mini_profiler/timer_struct/client.rb', line 26

def initialize(env={})
  super
end

Class Method Details

.init_from_form_data(env, page_struct) ⇒ Object 



38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
 
# File 'lib/mini_profiler/timer_struct/client.rb', line 38

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

  TimerStruct::Client.new.tap do |rval|
    rval[:redirect_count] = env['rack.request.form_hash']['clientPerformance']['navigation']['redirect_count']
    rval[:timings]        = timings
  end
end

.init_instrumentation ⇒ Object 



8
9
10
11
12
13
14
 
# File 'lib/mini_profiler/timer_struct/client.rb', line 8

def self.init_instrumentation
  %Q{
    <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

used by Railtie to instrument asset_tag for JS / CSS



17
18
19
20
21
22
23
 
# File 'lib/mini_profiler/timer_struct/client.rb', line 17

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

Instance Method Details

#redirect_count ⇒ Object 



30
31
32
 
# File 'lib/mini_profiler/timer_struct/client.rb', line 30

def redirect_count
  self[:redirect_count]
end

#timings ⇒ Object 



34
35
36
 
# File 'lib/mini_profiler/timer_struct/client.rb', line 34

def timings
  self[:timings]
end