class NewRelic::Agent::Instrumentation::ActionViewSubscriber::RenderEvent

Public Instance Methods

metric_action(name) click to toggle source
# File lib/new_relic/agent/instrumentation/action_view_subscriber.rb, line 83
def metric_action(name)
  case name
  when /render_template.action_view$/  then 'Rendering'
  when 'render_partial.action_view'    then 'Partial'
  when 'render_collection.action_view' then 'Partial'
  end
end
metric_name() click to toggle source
# File lib/new_relic/agent/instrumentation/action_view_subscriber.rb, line 56
def metric_name
  if parent && (payload[:virtual_path] ||
                (parent.payload[:identifier] =~ /template$/))
    return parent.metric_name
  elsif payload.key?(: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) click to toggle source
# File lib/new_relic/agent/instrumentation/action_view_subscriber.rb, line 71
def metric_path(identifier)
  if identifier == nil
    'file'
  elsif identifier =~ /template$/
    identifier
  elsif (parts = identifier.split('/')).size > 1
    parts[-2..-1].join('/')
  else
    ::NewRelic::Agent::UNKNOWN_METRIC
  end
end
recordable?() click to toggle source

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.

# File lib/new_relic/agent/instrumentation/action_view_subscriber.rb, line 50
def recordable?
  name[0] == '!' ||
    metric_name == 'View/text template/Rendering' ||
    metric_name == "View/#{::NewRelic::Agent::UNKNOWN_METRIC}/Partial"
end