initializer monkey patch to get new_relic explains to show up when using octopus

new_relic.rb

if defined?(NewRelic::Agent::Instrumentation::ActiveRecordSubscriber)
  module NewRelic
    module Agent
      module Instrumentation
        class ActiveRecordSubscriber
          def active_record_config_for_event_with_octopus(event)
            return unless event.payload[:connection_id]

            config = active_record_config_for_event_without_octopus(event)

            config || begin
              connections = (::ActiveRecord::Base.connection.instance_variable_get(:@shards) || {}).values.map(&:connections).flatten

              connection = connections.detect { |cnxn| cnxn.object_id == event.payload[:connection_id] }
              connection.instance_variable_get(:@config) if connection
            end
          end

          alias_method_chain :active_record_config_for_event, :octopus
        end
      end
    end
  end
end