rails instrumentation

micro_case.rb

if Rails.env.development?
  ::ActiveSupport::Notifications.subscribe 'µ-case' do |*args|
    result = args.extract_options![:result]
    description = result.use_case.class.name

    Rack::MiniProfiler.step("µ-case: #{description}") do
      Rails.logger.warn "µ-case called: #{description}"
    end
  end

  module Micro
    class Case
      class Result
        class Transitions
          MapEverything = ->(result, use_case_attributes) do
            ::ActiveSupport::Notifications.instrument 'µ-case', result: result do
              {
                use_case: { class: result.use_case.class, attributes: use_case_attributes },
                result.to_sym => { type: result.type, result: result.data },
                accessible_attributes: result.accessible_attributes
              }
            end
          end
        end
      end
    end
  end
end