Class: NewRelic::Agent::Instrumentation::ActionViewSubscriber::RenderEvent

Inherits:
ActiveSupport::Notifications::Event
  • Object
show all
Defined in:
lib/new_relic/agent/instrumentation/rails4/action_view.rb

Instance Attribute Summary collapse

Instance Method Summary collapse

Instance Attribute Details

#parent ⇒ Object

Returns the value of attribute parent.



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# File 'lib/new_relic/agent/instrumentation/rails4/action_view.rb', line 66

def parent
  @parent
end

#scope ⇒ Object

Returns the value of attribute scope.



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# File 'lib/new_relic/agent/instrumentation/rails4/action_view.rb', line 66

def scope
  @scope
end

Instance Method Details

#metric_action(name) ⇒ Object 



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# File 'lib/new_relic/agent/instrumentation/rails4/action_view.rb', line 105

def metric_action(name)
  case name
  when /render_template.action_view$/  then 'Rendering'
  when 'render_partial.action_view'    then 'Partial'
  when 'render_collection.action_view' then 'Partial'
  end
end

#metric_name ⇒ Object 



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# File 'lib/new_relic/agent/instrumentation/rails4/action_view.rb', line 78

def metric_name
  if parent && (payload[:virtual_path] ||
      (parent.payload[:identifier] =~ /template$/))
    return parent.metric_name
  elsif payload[:virtual_path]
    identifier = payload[:virtual_path]
  else
    identifier = payload[:identifier]
  end

  # memoize
  @metric_name ||= "View/#{metric_path(identifier)}/#{metric_action(name)}"
  @metric_name
end

#metric_path(identifier) ⇒ Object 



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# File 'lib/new_relic/agent/instrumentation/rails4/action_view.rb', line 93

def metric_path(identifier)
  if identifier == nil
    'file'
  elsif identifier =~ /template$/
    identifier
  elsif (parts = identifier.split('/')).size > 1
    parts[-2..-1].join('/')
  else
    '(unknown)'
  end
end

#recordable? ⇒ Boolean

Nearly every “render_blah.action_view” event has a child in the form of “!render_blah.action_view”. The children are the ones we want to record. There are a couple special cases of events without children.

Returns:

  • (Boolean) 


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# File 'lib/new_relic/agent/instrumentation/rails4/action_view.rb', line 72

def recordable?
  name[0] == '!' ||
    metric_name == 'View/text template/Rendering' ||
    metric_name == 'View/(unknown)/Partial'
end