Module: Datadog::RailsRendererPatcher

Defined in:
lib/ddtrace/contrib/rails/core_extensions.rb

Overview

RailsRendererPatcher contains function to patch Rails rendering libraries.

Class Method Summary collapse

Class Method Details

.patch_renderer ⇒ Object 



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# File 'lib/ddtrace/contrib/rails/core_extensions.rb', line 6

def patch_renderer
  patch_renderer_render_template
  patch_renderer_render_partial
end

.patch_renderer_render_partial ⇒ Object 



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# File 'lib/ddtrace/contrib/rails/core_extensions.rb', line 31

def patch_renderer_render_partial
  if defined?(::ActionView::PartialRenderer)
    ::ActionView::PartialRenderer.class_eval do
      alias_method :render_partial_without_datadog, :render_partial
      def render_partial(*args, &block)
        ActiveSupport::Notifications.instrument('start_render_partial.action_view')
        render_partial_without_datadog(*args, &block)
      end
    end
  else # Rails < 3.1
    ::ActionView::Partials::PartialRenderer.class_eval do
      alias_method :render_partial_without_datadog, :render
      def render(*args, &block)
        ActiveSupport::Notifications.instrument('start_render_partial.action_view')
        render_partial_without_datadog(*args, &block)
      end
    end
  end
end

.patch_renderer_render_template ⇒ Object 



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# File 'lib/ddtrace/contrib/rails/core_extensions.rb', line 11

def patch_renderer_render_template
  if defined?(::ActionView::Renderer)
    ::ActionView::Renderer.class_eval do
      alias_method :render_template_without_datadog, :render_template
      def render_template(*args, &block)
        ActiveSupport::Notifications.instrument('start_render_template.action_view')
        render_template_without_datadog(*args, &block)
      end
    end
  else # Rails < 3.1
    ::ActionView::Template.class_eval do
      alias_method :render_template_without_datadog, :render
      def render(*args, &block)
        ActiveSupport::Notifications.instrument('start_render_template.action_view')
        render_template_without_datadog(*args, &block)
      end
    end
  end
end