module.yml

---
# Copyright 2018 widdix GmbH
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
#     http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
AWSTemplateFormatVersion: '2010-09-09'
Description: 'cfn-modules: Application/Network load balancer DNS record'
# cfn-modules:implements(ExposeArn, ExposeSecurityGroupId, ExposeDnsName)
Parameters:
  HostedZoneModule:
    Description: 'Stack name of module implementing HostedZone.'
    Type: String
  LoadBalancerModule:
    Description: 'Stack name of module implementing LoadBalancer.'
    Type: String
  SubDomainNameWithDot:
    Description: 'Name that is used to create the DNS entry with trailing dot, e.g. §{SubDomainNameWithDot}§{HostedZoneName}. Leave blank for naked (or apex and bare) domain.'
    Type: String
    Default: ''
  LoadBalancerIpAddressType:
    Description: 'The IP adress type of the load balancer: IPv4 only or Dualstack (IPv4+IPv6)'
    Type: String
    Default: 'dualstack'
    AllowedValues:
    - 'ipv4'
    - 'dualstack'
Conditions:
  HasIpv6: !Equals [!Ref LoadBalancerIpAddressType, 'dualstack']
Resources:
  RecordSet:
    Type: 'AWS::Route53::RecordSet'
    Properties:
      AliasTarget:
        HostedZoneId: {'Fn::ImportValue': !Sub '${LoadBalancerModule}-CanonicalHostedZoneId'}
        DNSName: {'Fn::ImportValue': !Sub '${LoadBalancerModule}-DnsName'}
      HostedZoneId: {'Fn::ImportValue': !Sub '${HostedZoneModule}-Id'}
      Name: !Sub
      - '${SubDomainNameWithDot}${HostedZoneName}'
      - SubDomainNameWithDot: !Ref SubDomainNameWithDot
        HostedZoneName: {'Fn::ImportValue': !Sub '${HostedZoneModule}-Name'}
      Type: A
  RecordSetAAA:
    Condition: HasIpv6
    Type: 'AWS::Route53::RecordSet'
    Properties:
      AliasTarget:
        HostedZoneId: {'Fn::ImportValue': !Sub '${LoadBalancerModule}-CanonicalHostedZoneId'}
        DNSName: {'Fn::ImportValue': !Sub '${LoadBalancerModule}-DnsName'}
      HostedZoneId: {'Fn::ImportValue': !Sub '${HostedZoneModule}-Id'}
      Name: !Sub
      - '${SubDomainNameWithDot}${HostedZoneName}'
      - SubDomainNameWithDot: !Ref SubDomainNameWithDot
        HostedZoneName: {'Fn::ImportValue': !Sub '${HostedZoneModule}-Name'}
      Type: AAAA
Outputs:
  ModuleId:
    Value: 'lb-dns-record'
  ModuleVersion:
    Value: '1.1.1'
  StackName:
    Value: !Ref 'AWS::StackName'