Class: Labkit::Tracing::Rails::ActionView::Subscriber Private

Inherits:
Object
  • Object
show all
Includes:
TracingCommon
Defined in:
lib/labkit/tracing/rails/action_view/subscriber.rb

Overview

This class is part of a private API. You should avoid using this class if possible, as it may be removed or be changed in the future.

ActionView bridges action view notifications to the distributed tracing subsystem

Constant Summary collapse

RENDER_TEMPLATE_NOTIFICATION_TOPIC =

This constant is part of a private API. You should avoid using this constant if possible, as it may be removed or be changed in the future. 

"render_template.action_view"
RENDER_COLLECTION_NOTIFICATION_TOPIC =

This constant is part of a private API. You should avoid using this constant if possible, as it may be removed or be changed in the future. 

"render_collection.action_view"
RENDER_PARTIAL_NOTIFICATION_TOPIC =

This constant is part of a private API. You should avoid using this constant if possible, as it may be removed or be changed in the future. 

"render_partial.action_view"

Class Method Summary collapse

Class Method Details

.instrument ⇒ Object

This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future.

Instruments Rails ActionView events for opentracing. Returns a lambda, which, when called will unsubscribe from the notifications



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# File 'lib/labkit/tracing/rails/action_view/subscriber.rb', line 18

def self.instrument
  subscriptions = [
    ::ActiveSupport::Notifications.subscribe(RENDER_TEMPLATE_NOTIFICATION_TOPIC, RenderTemplateInstrumenter.new),
    ::ActiveSupport::Notifications.subscribe(RENDER_COLLECTION_NOTIFICATION_TOPIC, RenderCollectionInstrumenter.new),
    ::ActiveSupport::Notifications.subscribe(RENDER_PARTIAL_NOTIFICATION_TOPIC, RenderPartialInstrumenter.new),
  ]

  create_unsubscriber subscriptions
end