Class: ScoutApm::Instruments::ActionView

Inherits:
Object
  • Object
show all
Defined in:
lib/scout_apm/instruments/action_view.rb

Overview

instrumentation for Rails 3 and Rails 4 is the same.

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(context) ⇒ ActionView

Returns a new instance of ActionView.



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# File 'lib/scout_apm/instruments/action_view.rb', line 7

def initialize(context)
  @context = context
  @installed = false
end

Instance Attribute Details

#context ⇒ Object (readonly)

Returns the value of attribute context.



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# File 'lib/scout_apm/instruments/action_view.rb', line 5

def context
  @context
end

Instance Method Details

#install ⇒ Object 



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# File 'lib/scout_apm/instruments/action_view.rb', line 20

def install
  if defined?(::ActionView) && defined?(::ActionView::PartialRenderer)
    @installed = true

    logger.info "Instrumenting ActionView::PartialRenderer"
    ::ActionView::PartialRenderer.class_eval do
      include ScoutApm::Tracer

      instrument_method :render_partial,
        :type => "View",
        :name => '#{@template.virtual_path rescue "Unknown Partial"}/Rendering',
        :scope => true

      instrument_method :collection_with_template,
        :type => "View",
        :name => '#{@template.virtual_path rescue "Unknown Collection"}/Rendering',
        :scope => true
    end

    logger.info "Instrumenting ActionView::TemplateRenderer"
    ::ActionView::TemplateRenderer.class_eval do
      include ScoutApm::Tracer
      instrument_method :render_template,
        :type => "View",
        :name => '#{args[0].virtual_path rescue "Unknown"}/Rendering',
        :scope => true
    end
  end
end

#installed? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/scout_apm/instruments/action_view.rb', line 16

def installed?
  @installed
end

#logger ⇒ Object 



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# File 'lib/scout_apm/instruments/action_view.rb', line 12

def logger
  context.logger
end