AWSTemplateFormatVersion: '2010-09-09'
Description: catsndogs.lol workshop lab2. Deploys ECS Tasks and services to the cluster.
Parameters:
  LabSetupStackName:
    Type: String
    Description: "Name of the stack created at the very start of the workshop"
    Default: catsndogssetup
  ECSCluster:
    Type: String
    Description: "Name of the ECS cluster you created earlier"
    Default: catsndogsECScluster
  DogTag:
    Type: String
    Description: "DO NOT CHANGE. Image tag for the dogs container"
    Default: v1
  ImageRepo:
    Type: String
    Description: "DO NOT CHANGE. URI of the central catsndogs ECR repo. This is used in later labs"
    Default: 205094881157.dkr.ecr.us-west-2.amazonaws.com
Resources:
  CatsTaskDefinition:
    Type: AWS::ECS::TaskDefinition
    Properties:
      Family: 'cats'
      ContainerDefinitions:
        - Name: 'cats'
          Cpu: '50'
          Image: 205094881157.dkr.ecr.us-west-2.amazonaws.com/cats:v1
          Memory: 1024
          MemoryReservation: 384
          Essential: true
          PortMappings:
            - ContainerPort: 80
          Environment:
            - Name: Tag
              Value: 'v1'
  DogsTaskDefinition:
    Type: AWS::ECS::TaskDefinition
    Properties:
      Family: 'dogs'
      ContainerDefinitions:
        - Name: 'dogs'
          Cpu: '50'
          Image: !Sub ${ImageRepo}/dogs:${DogTag}
          Memory: 1024
          MemoryReservation: 384
          Essential: true
          PortMappings:
            - ContainerPort: 80
          Environment:
            - Name: Tag
              Value: 'v1'
  SimpleHomePageTaskDefinition:
    Type: AWS::ECS::TaskDefinition
    Properties:
      Family: 'simplehomepage'
      ContainerDefinitions:
        - Name: 'simplehomepage'
          Cpu: '50'
          Image: 205094881157.dkr.ecr.us-west-2.amazonaws.com/simplehomepage:latest
          Memory: 300
          MemoryReservation: 256
          Essential: true
          PortMappings:
            - ContainerPort: 80
          Environment:
            - Name: Tag
              Value: 'latest'
  CatsServiceDefinition:
    Type: AWS::ECS::Service
    DependsOn: CatsListenerRule
    Properties:
      Cluster: !Ref ECSCluster
      Role:
        Fn::ImportValue:
          !Sub "${LabSetupStackName}-ECSServiceRole"
      DesiredCount: 2
      TaskDefinition: !Ref CatsTaskDefinition
      LoadBalancers:
        - ContainerName: 'cats'
          ContainerPort: 80
          TargetGroupArn: !Ref CatsALBTargetGroup
  DogsServiceDefinition:
    DependsOn: DogsListenerRule
    Type: AWS::ECS::Service
    Properties:
      Cluster: !Ref ECSCluster
      Role:
        Fn::ImportValue:
          !Sub "${LabSetupStackName}-ECSServiceRole"
      DesiredCount: 2
      TaskDefinition: !Ref DogsTaskDefinition
      LoadBalancers:
        - ContainerName: 'dogs'
          ContainerPort: 80
          TargetGroupArn: !Ref DogsALBTargetGroup
  SimpleHomePageServiceDefinition:
    Type: AWS::ECS::Service
    DependsOn: LoadBalancerListener
    Properties:
      Cluster: !Ref ECSCluster
      Role:
        Fn::ImportValue:
          !Sub "${LabSetupStackName}-ECSServiceRole"
      DesiredCount: 2
      TaskDefinition: !Ref SimpleHomePageTaskDefinition
      LoadBalancers:
        - ContainerName: 'simplehomepage'
          ContainerPort: 80
          TargetGroupArn: !Ref SimpleHomePageALBTargetGroup
  CatsScaleDownAlarm:
    Type: AWS::CloudWatch::Alarm
    Properties:
      AlarmDescription: Scale in containers if ALB RequestCount SUM metric < 100
      MetricName: RequestCount
      Namespace: AWS/ApplicationELB
      EvaluationPeriods: '2'
      Period: '60'
      Statistic: Sum
      Threshold: '1000'
      ComparisonOperator: LessThanOrEqualToThreshold
      Dimensions:
      - Name: LoadBalancer
        Value:
          Fn::ImportValue:
            !Sub "${LabSetupStackName}-ALBFullName"
      - Name: TargetGroup
        Value: !GetAtt [CatsALBTargetGroup, TargetGroupFullName]
  DogsScaleDownAlarm:
    Type: AWS::CloudWatch::Alarm
    Properties:
      AlarmDescription: Scale in containers if ALB RequestCount SUM metric < 100
      MetricName: RequestCount
      Namespace: AWS/ApplicationELB
      EvaluationPeriods: '2'
      Period: '60'
      Statistic: Sum
      Threshold: '1000'
      ComparisonOperator: LessThanOrEqualToThreshold
      Dimensions:
      - Name: LoadBalancer
        Value:
          Fn::ImportValue:
            !Sub "${LabSetupStackName}-ALBFullName"
      - Name: TargetGroup
        Value: !GetAtt [DogsALBTargetGroup, TargetGroupFullName]
  CatsScaleUpAlarm:
    Type: AWS::CloudWatch::Alarm
    Properties:
      AlarmDescription: Scale out containers if ALB RequestCount SUM metric > 1000
      MetricName: RequestCount
      Namespace: AWS/ApplicationELB
      EvaluationPeriods: '2'
      Period: '60'
      Statistic: Sum
      Threshold: '1000'
      ComparisonOperator: GreaterThanOrEqualToThreshold
      Dimensions:
      - Name: LoadBalancer
        Value:
          Fn::ImportValue:
            !Sub "${LabSetupStackName}-ALBFullName"
      - Name: TargetGroup
        Value: !GetAtt [CatsALBTargetGroup, TargetGroupFullName]
  DogsScaleUpAlarm:
    Type: AWS::CloudWatch::Alarm
    Properties:
      AlarmDescription: Scale out containers if ALB RequestCount SUM metric > 1000
      MetricName: RequestCount
      Namespace: AWS/ApplicationELB
      EvaluationPeriods: '2'
      Period: '60'
      Statistic: Sum
      Threshold: '1000'
      ComparisonOperator: GreaterThanOrEqualToThreshold
      Dimensions:
      - Name: LoadBalancer
        Value:
          Fn::ImportValue:
            !Sub "${LabSetupStackName}-ALBFullName"
      - Name: TargetGroup
        Value: !GetAtt [DogsALBTargetGroup, TargetGroupFullName]
  CatsALBTargetGroup:
    Type: AWS::ElasticLoadBalancingV2::TargetGroup
    Properties:
      VpcId:
        Fn::ImportValue:
          !Sub "${LabSetupStackName}-Vpc"
      Port: 80
      Protocol: HTTP
      Matcher:
        HttpCode: 200-299
      HealthCheckIntervalSeconds: 10
      HealthCheckPath: /
      HealthCheckProtocol: HTTP
      HealthCheckTimeoutSeconds: 5
      HealthyThresholdCount: 2
      TargetGroupAttributes:
        - Key: deregistration_delay.timeout_seconds
          Value: 30
  DogsALBTargetGroup:
    Type: AWS::ElasticLoadBalancingV2::TargetGroup
    Properties:
      VpcId:
        Fn::ImportValue:
          !Sub "${LabSetupStackName}-Vpc"
      Port: 80
      Protocol: HTTP
      Matcher:
        HttpCode: 200-299
      HealthCheckIntervalSeconds: 10
      HealthCheckPath: /
      HealthCheckProtocol: HTTP
      HealthCheckTimeoutSeconds: 5
      HealthyThresholdCount: 2
      TargetGroupAttributes:
        - Key: deregistration_delay.timeout_seconds
          Value: 30
  SimpleHomePageALBTargetGroup:
    Type: AWS::ElasticLoadBalancingV2::TargetGroup
    Properties:
      VpcId:
        Fn::ImportValue:
          !Sub "${LabSetupStackName}-Vpc"
      Port: 80
      Protocol: HTTP
      Matcher:
        HttpCode: 200-299
      HealthCheckIntervalSeconds: 10
      HealthCheckPath: /
      HealthCheckProtocol: HTTP
      HealthCheckTimeoutSeconds: 5
      HealthyThresholdCount: 2
      TargetGroupAttributes:
        - Key: deregistration_delay.timeout_seconds
          Value: 30
  CatsListenerRule:
    Type: AWS::ElasticLoadBalancingV2::ListenerRule
    Properties:
      ListenerArn: !Ref LoadBalancerListener
      Priority: 1
      Conditions:
        - Field: path-pattern
          Values:
            - /cats*
      Actions:
        - TargetGroupArn: !Ref CatsALBTargetGroup
          Type: forward
  DogsListenerRule:
    Type: AWS::ElasticLoadBalancingV2::ListenerRule
    Properties:
      ListenerArn: !Ref LoadBalancerListener
      Priority: 2
      Conditions:
        - Field: path-pattern
          Values:
            - /dogs*
      Actions:
        - TargetGroupArn: !Ref DogsALBTargetGroup
          Type: forward
  LoadBalancerListener:
    Type: AWS::ElasticLoadBalancingV2::Listener
    Properties:
      LoadBalancerArn:
        Fn::ImportValue:
          !Sub "${LabSetupStackName}-ALBARN"
      Port: 80
      Protocol: HTTP
      DefaultActions:
        - Type: forward
          TargetGroupArn: !Ref SimpleHomePageALBTargetGroup