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  Lambda:
    Type: AWS::Lambda::Function
    Properties:
      Code:
        ZipFile: |
        def handler(event, context):
          response = {
            'isBase64Encoded': False,
            'statusCode': 200,
            'body': 'HELLO WORLD!'

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  LoadBalancerSecGroup:
    Type: AWS::EC2::SecurityGroup
    Properties:
      GroupDescription: Load balance allow port 80 traffic
      VpcId: !ImportValue VPCID
      SecurityGroupIngress:
        CidrIp: 0.0.0.0/0
        FromPort: 80
        IpProtocol: TCP
        ToPort: 80

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  Lambda:
    Type: AWS::Lambda::Function
    Properties:
      Code:
        ZipFile: |
        def handler(event, context):
          response = {
            'isBase64Encoded': False,
            'statusCode': 200,
            'body': 'HELLO WORLD!',

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from aiohttp import web
import aiohttp_cors
import json

async def healthcheck(_):
    headers = {
        "Cache-Control": "no-cache, no-store, must-revalidate",
        "Pragma": "no-cache",
        "Expires": "0",
    }

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  LoadBalancerSecGroup:
      Type: AWS::EC2::SecurityGroup
      Properties:
        GroupDescription: Load balancer only allow http port traffic
        VpcId: !ImportValue VPCID
        SecurityGroupIngress:
          CidrIp: 0.0.0.0/0
          FromPort: 80
          IpProtocol: TCP
          ToPort: 80

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FROM python:3.7-slim
COPY requirements.txt /app/requirements.txt
WORKDIR /app
RUN pip install -r requirements.txt
COPY src /app
EXPOSE 5000
CMD python app.py

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  ECSCluster:
    Type: 'AWS::ECS::Cluster'
    Properties:
      ClusterName: ECSCluster
      CapacityProviders:
        - FARGATE_SPOT
      DefaultCapacityProviderStrategy:
        - CapacityProvider: FARGATE_SPOT
          Weight: 1
      ClusterSettings:

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LaunchTemplate:
    Type: AWS::EC2::LaunchTemplate
    Metadata:
      AWS::CloudFormation::Init:
        config:
          packages:
            yum:
              amazon-ssm-agent: []
          commands:
            00_amazon_ssm_agent_start:

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AutoScalingPolicy:
    Type: AWS::AutoScaling::ScalingPolicy
    Properties:
      AutoScalingGroupName: !Ref AutoScalingGroup
      PolicyType: TargetTrackingScaling
      TargetTrackingConfiguration:
        PredefinedMetricSpecification:
          PredefinedMetricType: ASGAverageCPUUtilization
        TargetValue: 70

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  AutoScalingGroup: 
    Type: AWS::AutoScaling::AutoScalingGroup
    Properties:
      MinSize: "1"
      MaxSize: "2"
      DesiredCapacity: "2"
      HealthCheckGracePeriod: 300 
      MixedInstancesPolicy:
        InstancesDistribution:
          OnDemandBaseCapacity: 1