AWSTemplateFormatVersion: 2010-09-09
Description: >-
  This template deploys all components to support the application, with the
  exception of those related to BIG-IP.  An autoscaling group for the
  application is created. Disclaimer: More realistic application template would
  take AMI ID as input, with AMI ID being be artifact of a build pipe line.(qs-1p2474b65)
Conditions:
  useAppSecurityGroupId: !Not
    - !Equals
      - !Ref appSecurityGroupId
      - ''
  useStaticIp: !Not
    - !Equals
      - !Ref staticIp
      - ''
  useCustomImage: !Not
    - !Equals
      - !Ref customImageId
      - ''
Mappings:
  imageRegionMap:
    us-east-2:
      AMI: ami-0a75b786d9a7f8144
    us-east-1:
      AMI: ami-06cf02a98a61f9f5e
    us-west-1:
      AMI: ami-02676464a065c9c05
    us-west-2:
      AMI: ami-0a248ce88bcc7bd23
    af-south-1:
      AMI: ami-03bfd033c9d776adc
    ap-east-1:
      AMI: ami-09a8f7cf3b1b73e57
    ap-south-1:
      AMI: ami-0dd861ee19fd50a16
    ap-northeast-1:
      AMI: ami-0d09d267328197c99
    ap-northeast-2:
      AMI: ami-0cf8e67d10c823f2e
    ap-southeast-1:
      AMI: ami-056251cdd6fd1c8eb
    ap-southeast-2:
      AMI: ami-05f50d9ec7e4c3b02
    ca-central-1:
      AMI: ami-0252eebc56636a56b
    eu-central-1:
      AMI: ami-095e1a4d3d632d215
    eu-west-1:
      AMI: ami-0d4002a13019b7703
    eu-west-2:
      AMI: ami-0aa3620fadad9198e
    eu-west-3:
      AMI: ami-04552009264cbe9f4
    eu-south-1:
      AMI: ami-0a84267606bcea16b
    eu-north-1:
      AMI: ami-026f0eb2e8006617d
    me-south-1:
      AMI: ami-0c49e56e4c204cc4c
    sa-east-1:
      AMI: ami-0c52a0227804a4318
Metadata:
  'AWS::CloudFormation::Interface':
    ParameterGroups:
      - Label:
          default: Application Settings
        Parameters:
          - appDockerImageName
          - appSecurityGroupId
          - applicationSubnet
          - customImageId
          - instanceType
          - provisionPublicIp
          - sshKey
          - staticIp
    ParameterLabels:
      application:
        default: Application
      cost:
        default: Cost Center
      environment:
        default: Environment
      group:
        default: Group
      owner:
        default: Owner
      appDockerImageName:
        default: Application docker image name
      appSecurityGroupId:
        default: The resource ID of a security group to apply to the application
      applicationSubnet:
        default: Application Subnet ID used in case of standalone application
      instanceType:
        default: Must be a valid EC2 instance type for BIG-IP
      provisionPublicIp:
        default: To create a Public IP for the Application Instance.
      sshKey:
        default: Supply the public key that will be used for SSH authentication to the BIG-IP and application virtual machines
      staticIp:
        default: The private IP address to apply as primary private address
      uniqueString:
        default: Unique string
  Version: 1.1.0.0
Outputs:
  stackName:
    Description: application nested stack name
    Value: !Ref "AWS::StackName"
  appInstanceId:
    Description: Application server instance-id
    Value: !Ref AppInstance
Parameters:
  appDockerImageName:
    Default: f5devcentral/f5-demo-httpd:latest
    Description: Application docker image name
    Type: String
  appSecurityGroupId:
    Default: ''
    Description: The resource ID of a security group to apply to the application.
    Type: String
  application:
    Default: f5app
    Description: Application Tag.
    MaxLength: 50
    Type: String
  applicationSubnet:
    Default: ''
    Description: Application Subnet ID used in case of standalone application
    Type: String
  cost:
    Default: f5cost
    Description: Cost Center Tag.
    Type: String
  customImageId:
    Default: ''
    Description: Provide Custom Image AMI ID you wish to deploy.
    Type: String
  environment:
    Default: f5env
    MaxLength: 50
    Type: String
  group:
    Default: f5group
    MaxLength: 50
    Type: String
  instanceType:
    AllowedValues:
      - t2.small
    ConstraintDescription: Must be a valid EC2 instance type for BIG-IP
    Default: t2.small
    Description: Enter valid instance type.
    Type: String
  owner:
    Default: f5owner
    MaxLength: 50
    Type: String
  provisionPublicIp:
    AllowedValues:
      - 'true'
      - 'false'
    Default: 'false'
    Description: Whether or not to provision Public IP Addresses for the Application Network Interfaces.
    Type: String
  sshKey:
    Description: REQUIRED - Supply the public key that will be used for SSH authentication to the BIG-IP and application virtual machines.
    Type: AWS::EC2::KeyPair::KeyName
  staticIp:
    Default: ''
    Description: The private IP address to apply as primary private address. The address must reside in the subnet provided in the subnetId parameter. ***NOTE:*** When set to empty string, DHCP will be used for allocating ip address.
    Type: String
  uniqueString:
    AllowedPattern: ^[a-zA-Z][a-zA-Z0-9]{1,11}$
    ConstraintDescription: Must Contain between 1 and 12 alphanumeric characters with first character as a letter.
    Default: myUniqStr
    Description: Unique String used when creating object names or Tags.
    Type: String
Resources:
  AppInstance:
    Type: 'AWS::EC2::Instance'
    Properties:
      ImageId:
        !If
        - useCustomImage
        - !Ref customImageId
        - !FindInMap
          - imageRegionMap
          - !Ref 'AWS::Region'
          - AMI
      InstanceType: !Ref instanceType
      KeyName: !Ref sshKey
      NetworkInterfaces:
        !If
        - useStaticIp
        -
          - AssociatePublicIpAddress: !Ref provisionPublicIp
            DeviceIndex: "0"
            SubnetId: !Ref applicationSubnet
            GroupSet:
              - !If
                - useAppSecurityGroupId
                -
                  !Ref appSecurityGroupId
                - !Ref AWS::NoValue
            PrivateIpAddress: !Ref staticIp
        -
          - AssociatePublicIpAddress: !Ref provisionPublicIp
            DeviceIndex: "0"
            SubnetId: !Ref applicationSubnet
            GroupSet:
              - !If
                - useAppSecurityGroupId
                -
                  !Ref appSecurityGroupId
                - !Ref AWS::NoValue
      UserData: !Base64
        'Fn::Join':
          - ''
          - - |
              #!/bin/bash
            - |
              yum -y install docker
            - |
              service docker start
            - 'docker run --name f5demo -p 80:80 -p 443:443 -d '
            - !Ref appDockerImageName
            - ''
      Tags:
        - Key: application
          Value: !Ref application
        - Key: cost
          Value: !Ref cost
        - Key: environment
          Value: !Ref environment
        - Key: Name
          Value: !Join
            - ''
            - - !Ref uniqueString
              - '-application-instance'
        - Key: group
          Value: !Ref group
        - Key: owner
          Value: !Ref owner