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AWSTemplateFormatVersion: 2010-09-09
Description: >
  Distributed Load Testing using AWS Fargate.
  Dedicated VPC where the ECS Fargate tasks will be placed

Parameters:
  VpcCidrBlock:
    Type: String
    Default: 192.168.0.0/16
    Description: CIDR block of the new VPC where Fargate will be placed
  SubnetACidrBlock:
    Type: String
    Default: 192.168.0.0/20
    Description: CIDR block of subnet A
  SubnetBCidrBlock:
    Type: String
    Default: 192.168.16.0/20
    Description: CIDR block of subnet B
  SubnetCCidrBlock:
    Type: String
    Default: 192.168.32.0/20
    Description: CIDR block of subnet C

Mappings:
  RegionMap:
    us-east-1:
      az1: us-east-1a
      az2: us-east-1b
      az3: us-east-1c
    us-east-2:
      az1: us-east-2a
      az2: us-east-2b
      az3: us-east-2c
    us-west-2:
      az1: us-west-2a
      az2: us-west-2b
      az3: us-west-2c
    eu-west-1:
      az1: eu-west-1a
      az2: eu-west-1b
      az3: eu-west-1c

Resources:
  DLTVpc:
    Type: AWS::EC2::VPC
    Properties:
      CidrBlock: !Ref VpcCidrBlock
      InstanceTenancy: default
      EnableDnsSupport: true
      EnableDnsHostnames: true
      Tags:
        - Key: Name
          Value: dlt-fargate

  PublicSubnetA:
    Type: AWS::EC2::Subnet
    Properties:
      CidrBlock: !Ref SubnetACidrBlock
      AvailabilityZone: !FindInMap [RegionMap, !Ref "AWS::Region", "az1"]
      VpcId: !Ref DLTVpc

  PublicSubnetB:
    Type: AWS::EC2::Subnet
    Properties:
      CidrBlock: !Ref SubnetBCidrBlock
      AvailabilityZone: !FindInMap [RegionMap, !Ref "AWS::Region", "az2"]
      VpcId: !Ref DLTVpc

  PublicSubnetC:
    Type: AWS::EC2::Subnet
    Properties:
      CidrBlock: !Ref SubnetCCidrBlock
      AvailabilityZone: !FindInMap [RegionMap, !Ref "AWS::Region", "az3"]
      VpcId: !Ref DLTVpc

  InternetGateway:
    Type: AWS::EC2::InternetGateway
    Properties: {}

  MainRouteTable:
    Type: AWS::EC2::RouteTable
    Properties:
      VpcId: !Ref DLTVpc

  GatewayAttachment:
    Type: AWS::EC2::VPCGatewayAttachment
    Properties:
      VpcId: !Ref DLTVpc
      InternetGatewayId: !Ref InternetGateway

  RouteToInternet:
    Type: AWS::EC2::Route
    DependsOn: GatewayAttachment
    Properties:
      DestinationCidrBlock: 0.0.0.0/0
      RouteTableId: !Ref MainRouteTable
      GatewayId: !Ref InternetGateway

  RouteTableAssociationA:
    Type: AWS::EC2::SubnetRouteTableAssociation
    Properties:
      RouteTableId: !Ref MainRouteTable
      SubnetId: !Ref PublicSubnetA

  RouteTableAssociationB:
    Type: AWS::EC2::SubnetRouteTableAssociation
    Properties:
      RouteTableId: !Ref MainRouteTable
      SubnetId: !Ref PublicSubnetB

  RouteTableAssociationC:
    Type: AWS::EC2::SubnetRouteTableAssociation
    Properties:
      RouteTableId: !Ref MainRouteTable
      SubnetId: !Ref PublicSubnetC


Outputs:
  VpcId:
    Value: !Ref DLTVpc
  SubnetA:
    Value: !Ref PublicSubnetA
  SubnetB:
    Value: !Ref PublicSubnetB
  SubnetC:
    Value: !Ref PublicSubnetC