Class: Labkit::Tracing::Rails::ActiveRecord::Subscriber

Inherits:

Object

• Object
• Labkit::Tracing::Rails::ActiveRecord::Subscriber

Includes:

TracingCommon

Defined in:

lib/labkit/tracing/rails/active_record/subscriber.rb

Overview

ActiveRecord bridges active record notifications to the distributed tracing subsystem

Constant Summary

ACTIVE_RECORD_NOTIFICATION_TOPIC =

"sql.active_record"

Class Method Summary

• .instrument ⇒ Object

  Instruments Rails ActiveRecord events for opentracing.

Class Method Details

.instrument ⇒ Object

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

# File 'lib/labkit/tracing/rails/active_record/subscriber.rb', line 16

def self.instrument
  subscription = ::ActiveSupport::Notifications.subscribe(ACTIVE_RECORD_NOTIFICATION_TOPIC, SqlInstrumenter.new)

  create_unsubscriber [subscription]
end