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

Inherits:
Event
  • Object
show all
Defined in:
lib/new_relic/agent/instrumentation/action_view_subscriber.rb

Instance Attribute Summary

Attributes inherited from Event

#children, #end, #name, #parent, #payload, #scope, #time, #transaction_id

Instance Method Summary collapse

Methods inherited from Event

#<<, #duration, #initialize, #parent_of?

Constructor Details

This class inherits a constructor from NewRelic::Agent::Instrumentation::Event

Instance Method Details

#metric_action(name) ⇒ Object 



81
82
83
84
85
86
87
 
# File 'lib/new_relic/agent/instrumentation/action_view_subscriber.rb', line 81

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 



54
55
56
57
58
59
60
61
62
63
64
65
66
67
 
# File 'lib/new_relic/agent/instrumentation/action_view_subscriber.rb', line 54

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) ⇒ Object 



69
70
71
72
73
74
75
76
77
78
79
 
# File 'lib/new_relic/agent/instrumentation/action_view_subscriber.rb', line 69

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? ⇒ 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) 


48
49
50
51
52
 
# File 'lib/new_relic/agent/instrumentation/action_view_subscriber.rb', line 48

def recordable?
  name[0] == '!' ||
    metric_name == 'View/text template/Rendering' ||
    metric_name == "View/#{::NewRelic::Agent::UNKNOWN_METRIC}/Partial"
end