Module: AwsPublicIps::Checks::Elbv2

Defined in:
lib/aws_public_ips/checks/elbv2.rb

Class Method Summary collapse

Class Method Details

.run ⇒ Object 



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# File 'lib/aws_public_ips/checks/elbv2.rb', line 9

def self.run
  client = ::Aws::ElasticLoadBalancingV2::Client.new
  return [] unless ::AwsPublicIps::Utils.has_service?(client)

  # EC2-Classic load balancers are only returned by the 'elasticloadbalancing' API, and
  # EC2-VPC ALBs/NLBs are only returned by the 'elasticloadbalancingv2' API

  # NLBs only support IPv4
  # ALBs support IPv4 or dualstack. Unlike Classic ELBs which have a separate IPv6 DNS name,
  # dualstack ALBs only have a single DNS name
  client.describe_load_balancers.flat_map do |response|
    response.load_balancers.flat_map do |load_balancer|
      next [] unless load_balancer.scheme == 'internet-facing'

      {
        id: load_balancer.canonical_hosted_zone_id,
        hostname: load_balancer.dns_name,
        ip_addresses: ::AwsPublicIps::Utils.resolve_hostname(load_balancer.dns_name)
      }
    end
  end
end