Class: ChromeDebugger::Document

Inherits:
Object
  • Object
show all
Defined in:
lib/chrome_debugger/document.rb

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(url) ⇒ Document

Returns a new instance of Document.



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# File 'lib/chrome_debugger/document.rb', line 12

def initialize(url)
  @url       = url
  @timestamp = 0
  @events    = []
end

Instance Attribute Details

#events ⇒ Object (readonly)

Returns the value of attribute events.



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# File 'lib/chrome_debugger/document.rb', line 10

def events
  @events
end

#url ⇒ Object (readonly)

Returns the value of attribute url.



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# File 'lib/chrome_debugger/document.rb', line 10

def url
  @url
end

Instance Method Details

#bytes(resource_type) ⇒ Object

The number of bytes downloaded for a particular resource type. If the resource was gzipped during transfer then the uncompressed size is reported.

The HTTP headers for the response are NOT included in the byte count.

Possible resource types: ‘Document’,‘Script’, ‘Image’, ‘Stylesheet’, ‘Other’.



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# File 'lib/chrome_debugger/document.rb', line 79

def bytes(resource_type)
  @events.select {|e|
    e.is_a?(ResponseReceived) && e.resource_type == resource_type
  }.map { |e|
    e.request_id
  }.map { |request_id|
    data_received_for_request(request_id)
  }.flatten.inject(0) { |bytes_sum, n| bytes_sum + n.data_length }
end

#dom_content_event ⇒ Object

The number of seconds after start_time the the DomReady event fired



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# File 'lib/chrome_debugger/document.rb', line 43

def dom_content_event
  @dom_content_event ||= begin
                           ts = @events.select { |event|
                             event.is_a?(DomContentEventFired)
                           }.slice(0,1).map(&:timestamp).first
                           ts ? (ts - start_time).round(3) : nil
                         end
end

#encoded_bytes(resource_type) ⇒ Object

The number of bytes downloaded for a particular resource type. If the resource was gzipped during transfer then the gzipped size is reported.

The HTTP headers for the response are included in the byte count.

Possible resource types: ‘Document’,‘Script’, ‘Image’, ‘Stylesheet’, ‘Other’.



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# File 'lib/chrome_debugger/document.rb', line 60

def encoded_bytes(resource_type)
  @events.select {|e|
    e.is_a?(ResponseReceived) && e.resource_type == resource_type
  }.map { |e|
    e.request_id
  }.map { |request_id|
    data_received_for_request(request_id)
  }.flatten.inject(0) { |bytes_sum, n| bytes_sum + n.encoded_data_length }
end

#onload_event ⇒ Object

The number of seconds after start_time that the OnLoad event fired



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# File 'lib/chrome_debugger/document.rb', line 32

def onload_event
  @onload_event ||= begin
                      ts = @events.select { |event|
                        event.is_a?(LoadEventFired)
                      }.slice(0,1).map(&:timestamp).first
                      ts ? (ts - start_time).round(3) : nil
                    end
end

#request_count ⇒ Object

The number of network requests required to load this document



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# File 'lib/chrome_debugger/document.rb', line 91

def request_count
  @events.select {|n|
    n.is_a?(ResponseReceived)
  }.size
end

#request_count_by_resource(resource_type) ⇒ Object

the number of network requests of a particular resource type that were required to load this document

Possible resource types: ‘Document’, ‘Script’, ‘Image’, ‘Stylesheet’, ‘Other’.



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# File 'lib/chrome_debugger/document.rb', line 103

def request_count_by_resource(resource_type)
  @events.select {|n|
    n.is_a?(ResponseReceived) && n.resource_type == resource_type
  }.size
end

#start_time ⇒ Object

The seconds since epoch that the request for this document started



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# File 'lib/chrome_debugger/document.rb', line 20

def start_time
  @start_time ||= @events.select { |event|
    event.is_a?(RequestWillBeSent)
  }.select { |event|
    event.request['url'] == @url
  }.map { |event|
    event.timestamp
  }.first
end