service.yaml

---
AWSTemplateFormatVersion: 2010-09-09


Parameters:
  Cluster:
    Type: String

  DesiredCount:
    Type: Number
    Default: 1

  LaunchType:
    Type: String
    Default: Fargate
    AllowedValues:
      - Fargate
      - EC2

  TargetGroup:
    Type: String

  SourceSecurityGroup:
    Type: AWS::EC2::SecurityGroup::Id

  Subnets:
    Type: List<AWS::EC2::Subnet::Id>


Conditions:
  Fargate: !Equals [ !Ref LaunchType, "Fargate" ]

  EC2: !Equals [ !Ref LaunchType, "EC2" ]


Resources:
  TaskExecutionRole:
    Type: AWS::IAM::Role
    Properties:
      Path: /
      AssumeRolePolicyDocument:
        Version: 2012-10-17
        Statement:
          - Action: sts:AssumeRole
            Effect: Allow
            Principal:
              Service: ecs-tasks.amazonaws.com
      ManagedPolicyArns:
        - arn:aws:iam::aws:policy/service-role/AmazonECSTaskExecutionRolePolicy

  LogGroup:
    Type: AWS::Logs::LogGroup
    Properties:
      LogGroupName: !Sub /ecs/${AWS::StackName}

  FargateService:
    Type: AWS::ECS::Service
    Condition: Fargate
    Properties:
      Cluster: !Ref Cluster
      DesiredCount: !Ref DesiredCount
      TaskDefinition: !Ref TaskDefinition
      LaunchType: FARGATE
      NetworkConfiguration:
        AwsvpcConfiguration:
          AssignPublicIp: ENABLED
          SecurityGroups:
            - !Ref SourceSecurityGroup
          Subnets: !Ref Subnets
      LoadBalancers:
        - ContainerName: simple-app
          ContainerPort: 80
          TargetGroupArn: !Ref TargetGroup

  EC2Service:
    Type: AWS::ECS::Service
    Condition: EC2
    Properties:
      Cluster: !Ref Cluster
      DesiredCount: !Ref DesiredCount
      TaskDefinition: !Ref TaskDefinition
      LaunchType: EC2
      LoadBalancers:
        - ContainerName: simple-app
          ContainerPort: 80
          TargetGroupArn: !Ref TargetGroup

  TaskDefinition:
    Type: AWS::ECS::TaskDefinition
    Properties:
      Family: !Sub ${AWS::StackName}-simple-app
      RequiresCompatibilities:
        - !If [ Fargate, "FARGATE", "EC2" ]
      Memory: 512
      Cpu: 256
      NetworkMode: !If [ Fargate, "awsvpc", "bridge" ]
      ExecutionRoleArn: !Ref TaskExecutionRole
      ContainerDefinitions:
        - Name: simple-app
          Image: amazon/amazon-ecs-sample
          EntryPoint:
            - /usr/sbin/apache2
            - -D
            - FOREGROUND
          Essential: true
          Memory: 256
          MountPoints:
            - SourceVolume: my-vol
              ContainerPath: /var/www/my-vol
          PortMappings:
            - ContainerPort: 80
          LogConfiguration:
            LogDriver: awslogs
            Options:
              awslogs-region: !Ref AWS::Region
              awslogs-group: !Ref LogGroup
              awslogs-stream-prefix: !Ref AWS::StackName
        - Name: busybox
          Image: busybox
          EntryPoint:
            - sh
            - -c
          Essential: true
          Memory: 256
          VolumesFrom:
            - SourceContainer: simple-app
          Command:
            - /bin/sh -c "while true; do /bin/date > /var/www/my-vol/date; sleep 1; done"
      Volumes:
        - Name: my-vol


Outputs:
  Service:
    Value: !If [ Fargate, !Ref FargateService, !Ref EC2Service ]