A Handle is used to record the start and finish time of event.

Both start and finish must each be called exactly once.

Where possible, it’s best to use the block form: ActiveSupport::Notifications.instrument. Handle is a low-level API intended for cases where the block form can’t be used.

handle = ActiveSupport::Notifications.instrumenter.build_handle("my.event", {})
begin
  handle.start
  # work to be instrumented
ensure
  handle.finish
end

Methods

Instance Public methods

finish()

Source code 
# File activesupport/lib/active_support/notifications/fanout.rb, line 247
        def finish
          finish_with_values(@name, @id, @payload)
        end
See on GitHub

start()

Source code 
# File activesupport/lib/active_support/notifications/fanout.rb, line 238
        def start
          ensure_state! :initialized
          @state = :started

          @groups.each do |group|
            group.start(@name, @id, @payload)
          end
        end
See on GitHub