AWSTemplateFormatVersion: 2010-09-09
Description: 'This template deploys the Auto Scaling Groups and Launch Configurations. The Launch Configurations launch the instances for the Sitecore roles  (qs-1t2fuci4c)'
Parameters:
  PrivateSubnet1A:
    Type: String
    Description: 'ID of the private subnet 1 in Availability Zone 1 (e.g., subnet-a0246dcd)'
  PrivateSubnet2A:
    Type: String
    Description: 'ID of the private subnet 2 in Availability Zone 2 (e.g., subnet-a0246dcd)'
  CDMinSize:
    Type: String
    Description: 'The minimum number of Content Delivery instances available.'
  CDMaxSize:
    Type: String
    Description: 'The maximum number of Content Delivery instances available.'
  CDDesiredCapacity:
    Type: String
    Description: 'The desired number of Content Delivery instances available.'
  CDInstanceType:
    Type: String
    Description: 'The Content Delivery instance type'
  CDScalingMetric:
    Type: String
    Description: 'The metric used to determine scaling of the Content Delivery role.'
    Default: ASGAverageCPUUtilization
    AllowedValues:
      - ASGAverageCPUUtilization
      - ASGAverageNetworkIn
      - ALBRequestCountPerTarget
  CDScalingMetricValue:
    Type: String
    Description: 'The value required for the Content Delivery Scaling Metric (For ASGAverageNetworkIn this value is in bytes).'
    Default: 70
  CMInstanceType:
    Type: String
    Description: 'The Content Management instance type'
  CMMinSize:
    Type: Number
    Description: 'The minimum number of Content Management instances available.'
  CMMaxSize:
    Type: Number
    Description: 'The maximum number of Content Management instances available.'
  CMDesiredCapacity:
    Type: Number
    Description: 'The desired number of Content Management instances available.'
  CMScalingMetric:
    Type: String
    Description: 'The metric used to determine scaling of the Content Management role.'
    Default: ASGAverageCPUUtilization
    AllowedValues:
      - ASGAverageCPUUtilization
      - ASGAverageNetworkIn
      - ALBRequestCountPerTarget
  CMScalingMetricValue:
    Type: String
    Description: 'The value required for the Content Management Scaling Metric (For ASGAverageNetworkIn this value is in bytes).'
    Default: 70
  SitecoreInstanceSG:
    Type: AWS::EC2::SecurityGroup::Id
    Description: 'The Sitecore instance security group ID.'
  SCInstanceProfile:
    Type: String
    Description: 'The Sitecore instance profile ARN.'
  SitecoreKeyPair:
    Type: String
    Description: 'The sitecore EC2 key pair'
  AutoscalingSNS:
    Type: String
    Description: 'The SNS topic ARn for Auto Scaling notification'
  LocalQSScripts:
    Type: String
    Description: 'Local path for Quick Start scripts'
  SCQSPrefix:
    Type: String
    Description: 'The Sitecore Quick Start prefix'
  CDExtTargetGroup:
    Type: String
    Description: 'Content Delivery Target Group'
  CMExtTargetGroup:
    Type: String
    Description: 'Content Management Target Group'
  ISExtTargetGroup:
    Type: String
    Description: 'Identity Target Group'
  IdentityInstanceType:
    Type: String
    Default: m4.large
    Description: 'The Identity instance type'

Resources:
  #Create Auto Scaling Groups & Launch Configurations
  ContentDeliveryASG:
    Type: AWS::AutoScaling::AutoScalingGroup
    CreationPolicy: # Wait for the instance to signal that it is created
      ResourceSignal:
        Timeout: PT15M
        Count: !Ref CDDesiredCapacity
    UpdatePolicy:
      AutoScalingScheduledAction:
        IgnoreUnmodifiedGroupSizeProperties: true
      AutoScalingRollingUpdate:
        MinInstancesInService: 1
        MaxBatchSize: 1
        WaitOnResourceSignals: true
        PauseTime: PT15M
    Properties:
      LaunchConfigurationName: !Ref ContentDeliveryLC
      MaxSize: !Ref CDMaxSize
      MinSize: !Ref CDMinSize
      DesiredCapacity: !Ref CDDesiredCapacity
      VPCZoneIdentifier:
        - !Ref PrivateSubnet1A
        - !Ref PrivateSubnet2A
      TargetGroupARNs:
        - !Ref CDExtTargetGroup
      NotificationConfigurations:
        - TopicARN: !Ref AutoscalingSNS
          NotificationTypes:
            - autoscaling:EC2_INSTANCE_LAUNCH
            - autoscaling:EC2_INSTANCE_LAUNCH_ERROR
            - autoscaling:EC2_INSTANCE_TERMINATE
            - autoscaling:EC2_INSTANCE_TERMINATE_ERROR
      Tags:
        - Key: Name
          Value: !Sub ContentDelivery-${SCQSPrefix}
          PropagateAtLaunch: true
        - Key: Sitecore-QuickStart
          Value: !Sub ${SCQSPrefix}
          PropagateAtLaunch: true
  ContentDeliveryLC:
    Type: AWS::AutoScaling::LaunchConfiguration
    Properties:
      ImageId: !Sub '{{resolve:ssm:/${SCQSPrefix}/instance/ami/customid:1}}'
      InstanceType: !Ref CDInstanceType
      SecurityGroups:
        - !Ref SitecoreInstanceSG
      IamInstanceProfile: !Ref SCInstanceProfile
      KeyName: !Ref SitecoreKeyPair
      UserData: !Base64
        Fn::Join:
          - ''
          - - "<powershell>\n"
            - !Sub '${LocalQSScripts}\sc-role-prep.ps1 -Role "CD" -SCQSPrefix '
            - !Sub '"${SCQSPrefix}"'
            - "\n"
            - !Sub '${LocalQSScripts}\sc-xm-install-resources.ps1 -Role "CD" -SCQSPrefix '
            - !Sub '"${SCQSPrefix}" -Region '
            - !Sub '"${AWS::Region}"'
            - "\n"
            - !Sub '${LocalQSScripts}\sc-update-web-config.ps1 -SCQSPrefix '
            - !Sub '"${SCQSPrefix}"'
            - "\n"
            - !Sub 'New-AWSQuickStartResourceSignal -Stack "${AWS::StackName}" -Region '
            - !Sub '"${AWS::Region}" -Resource "ContentDeliveryASG"'
            - "\n"
            - "Write-AWSQuickStartStatus"
            - "\n"
            - "</powershell>\n"
  CDScalingPolicy:
    Type: AWS::AutoScaling::ScalingPolicy
    Properties:
      AutoScalingGroupName: !Ref ContentDeliveryASG
      PolicyType: TargetTrackingScaling
      EstimatedInstanceWarmup: 300
      TargetTrackingConfiguration:
        PredefinedMetricSpecification:
          PredefinedMetricType: !Ref CDScalingMetric
        TargetValue: !Ref CDScalingMetricValue
  ContentManagementASG:
    Type: AWS::AutoScaling::AutoScalingGroup
    CreationPolicy: # Wait for the instance to signal that it is created
      ResourceSignal:
        Timeout: PT15M
        Count: !Ref CMDesiredCapacity
    UpdatePolicy:
      AutoScalingScheduledAction:
        IgnoreUnmodifiedGroupSizeProperties: true
      AutoScalingRollingUpdate:
        MinInstancesInService: 1
        MaxBatchSize: 1
        WaitOnResourceSignals: true
        PauseTime: PT15M
    Properties:
      LaunchConfigurationName: !Ref ContentManagementLC
      MaxSize: !Ref CMMaxSize
      MinSize: !Ref CMMinSize
      DesiredCapacity: !Ref CMDesiredCapacity
      VPCZoneIdentifier:
        - !Ref PrivateSubnet1A
        - !Ref PrivateSubnet2A
      TargetGroupARNs:
        - !Ref CMExtTargetGroup
      NotificationConfigurations:
        - TopicARN: !Ref AutoscalingSNS
          NotificationTypes:
            - autoscaling:EC2_INSTANCE_LAUNCH
            - autoscaling:EC2_INSTANCE_LAUNCH_ERROR
            - autoscaling:EC2_INSTANCE_TERMINATE
            - autoscaling:EC2_INSTANCE_TERMINATE_ERROR
      Tags:
        - Key: Name
          Value: !Sub ContentManagement-${SCQSPrefix}
          PropagateAtLaunch: true
        - Key: Sitecore-QuickStart
          Value: !Sub ${SCQSPrefix}
          PropagateAtLaunch: true
  ContentManagementLC:
    Type: AWS::AutoScaling::LaunchConfiguration
    Properties:
      ImageId: !Sub '{{resolve:ssm:/${SCQSPrefix}/instance/ami/customid:1}}'
      InstanceType: !Ref CMInstanceType
      SecurityGroups:
        - !Ref SitecoreInstanceSG
      IamInstanceProfile: !Ref SCInstanceProfile
      KeyName: !Ref SitecoreKeyPair
      UserData: !Base64
        Fn::Join:
          - ''
          - - "<powershell>\n"
            - !Sub '${LocalQSScripts}\sc-role-prep.ps1 -Role "CM" -SCQSPrefix '
            - !Sub '"${SCQSPrefix}"'
            - "\n"
            - !Sub '${LocalQSScripts}\sc-xm-install-resources.ps1 -Role "CM" -SCQSPrefix '
            - !Sub '"${SCQSPrefix}" -Region '
            - !Sub '"${AWS::Region}"'
            - "\n"
            - !Sub 'New-AWSQuickStartResourceSignal -Stack "${AWS::StackName}" -Region '
            - !Sub '"${AWS::Region}" -Resource "ContentManagementASG"'
            - "\n"
            - "Write-AWSQuickStartStatus"
            - "\n"
            - "\n"
            - "</powershell>\n"
  CMScalingPolicy:
    Type: AWS::AutoScaling::ScalingPolicy
    Properties:
      AutoScalingGroupName: !Ref ContentManagementASG
      PolicyType: TargetTrackingScaling
      EstimatedInstanceWarmup: 300
      TargetTrackingConfiguration:
        PredefinedMetricSpecification:
          PredefinedMetricType: !Ref CMScalingMetric
        TargetValue: !Ref CMScalingMetricValue
  IdentityASG:
    Type: AWS::AutoScaling::AutoScalingGroup
    CreationPolicy: # Wait for the instance to signal that it is created
      ResourceSignal:
        Timeout: PT15M
        Count: 1
    UpdatePolicy:
      AutoScalingScheduledAction:
        IgnoreUnmodifiedGroupSizeProperties: true
      AutoScalingRollingUpdate:
        MinInstancesInService: 1
        MaxBatchSize: 1
        WaitOnResourceSignals: true
        PauseTime: PT15M
    Properties:
      LaunchConfigurationName: !Ref IdentityLC
      MaxSize: '2'
      MinSize: '1'
      DesiredCapacity: '1'
      VPCZoneIdentifier:
        - !Ref PrivateSubnet1A
        - !Ref PrivateSubnet2A
      TargetGroupARNs:
        # - !Ref ISIntTargetGroup
        - !Ref ISExtTargetGroup
      NotificationConfigurations:
        - TopicARN: !Ref AutoscalingSNS
          NotificationTypes:
            - autoscaling:EC2_INSTANCE_LAUNCH
            - autoscaling:EC2_INSTANCE_LAUNCH_ERROR
            - autoscaling:EC2_INSTANCE_TERMINATE
            - autoscaling:EC2_INSTANCE_TERMINATE_ERROR
      Tags:
        - Key: Name
          Value: !Sub Identity-${SCQSPrefix}
          PropagateAtLaunch: true
        - Key: Sitecore-QuickStart
          Value: !Sub ${SCQSPrefix}
          PropagateAtLaunch: true
  IdentityScalingPolicy:
    Type: AWS::AutoScaling::ScalingPolicy
    Properties:
      AutoScalingGroupName: !Ref IdentityASG
      PolicyType: TargetTrackingScaling
      EstimatedInstanceWarmup: 300
      TargetTrackingConfiguration:
        PredefinedMetricSpecification:
          PredefinedMetricType: ASGAverageCPUUtilization
        TargetValue: 70
  IdentityLC:
    Type: AWS::AutoScaling::LaunchConfiguration
    Properties:
      ImageId: !Sub '{{resolve:ssm:/${SCQSPrefix}/instance/ami/customid:1}}'
      InstanceType: !Ref IdentityInstanceType
      SecurityGroups:
        - !Ref SitecoreInstanceSG
      IamInstanceProfile: !Ref SCInstanceProfile
      KeyName: !Ref SitecoreKeyPair
      UserData: !Base64
        Fn::Join:
          - ''
          - - "<powershell>\n"
            - !Sub '${LocalQSScripts}\sc-role-prep.ps1 -Role "IdentityServer" -SCQSPrefix '
            - !Sub '"${SCQSPrefix}"'
            - "\n"
            - !Sub '${LocalQSScripts}\sc-xm-install-resources.ps1 -Role "IdentityServer" -SCQSPrefix '
            - !Sub '"${SCQSPrefix}" -Region '
            - !Sub '"${AWS::Region}"'
            - "\n"
            - !Sub 'New-AWSQuickStartResourceSignal -Stack "${AWS::StackName}" -Region '
            - !Sub '"${AWS::Region}" -Resource "IdentityASG"'
            - "\n"
            - "Write-AWSQuickStartStatus"
            - "\n"
            - "</powershell>\n"