Control: Classic load balancers having no instances attached should be deleted

powerpipe control run aws_thrifty.control.ec2_classic_lb_unused

powerpipe login
powerpipe control run aws_thrifty.control.ec2_classic_lb_unused --share

select
  arn as resource,
  case
    when jsonb_array_length(instances) > 0 then 'ok'
    else 'alarm'
  end as status,
  case
    when jsonb_array_length(instances) > 0 then title || ' has registered instances.'
    else title || ' has no instances registered.'
  end as reason
  
  , region, account_id
from
  aws_ec2_classic_load_balancer;