ActiveRecord callbacks tracking

[anirbanmu]

I'm attempting to use this process (https://docs.scoutapm.com/#ruby-custom-instrumentation) to instrument methods in an ActiveRecord model. These methods that I instrumented are used as callbacks like (before_save). Snippet that shows what I'm doing:

# frozen_string_literal: true

class Record < ApplicationRecord
  include ::ScoutApm::Tracer

  before_save :do_something_before_save

  def do_something_before_save
    puts 'doing something before save'
  end
  
  instrument_method :do_something_before_save
end

What I'm noticing in traces on the web Scout UI is that it seems like this method is not grouped as a separate metric (I don't see any metrics for it at all). I was guessing it was being counted as ActiveRecord and under the call for Record.create! since it's called by ActiveRecord on our behalf.

Can anyone shed any light on what I might be doing wrong here? I would like to see the metric for this method separately and not counted inside the ActiveRecord category/call.