infra/ecs_fargate.yml

AWSTemplateFormatVersion: '2010-09-09'
Description: Deploy Gradio and FastAPI services on AWS ECS Fargate

Parameters:
  Environment:
    Type: String
    Default: dev
    AllowedValues: [dev, prod]
  
  # VPC Configuration
  VpcCIDR:
    Type: String
    Default: 10.0.0.0/16
  PublicSubnet1CIDR:
    Type: String
    Default: 10.0.1.0/24
  PublicSubnet2CIDR:
    Type: String
    Default: 10.0.2.0/24
  
  # ECS Configuration
  ECSClusterName:
    Type: String
    Default: rag-ecs-cluster
  GradioTaskDefinitionCPU:
    Type: Number
    Default: 512
  GradioTaskDefinitionMemory:
    Type: Number 
    Default: 1024
  FastAPITaskDefinitionCPU:
    Type: Number
    Default: 256
  FastAPITaskDefinitionMemory: 
    Type: Number
    Default: 512
  
  # Container Images
  ContainerImageGradio:
    Type: String
    Description: URI of the Gradio container image in ECR
  ContainerImageFastAPI:
    Type: String
    Description: URI of the FastAPI container image in ECR
  # CertificateArn:
  #   Type: String

Resources:
  # VPC and Networking
  VPC:
    Type: AWS::EC2::VPC
    Properties:
      CidrBlock: !Ref VpcCIDR
      EnableDnsHostnames: true
      EnableDnsSupport: true
      Tags:
        - Key: Name
          Value: !Sub ${Environment}-acres-vpc

  InternetGateway:
    Type: AWS::EC2::InternetGateway
    Properties:
      Tags:
        - Key: Name
          Value: !Sub ${Environment}-acres-igw

  AttachGateway:
    Type: AWS::EC2::VPCGatewayAttachment
    Properties:
      VpcId: !Ref VPC
      InternetGatewayId: !Ref InternetGateway

  PublicSubnet1:
    Type: AWS::EC2::Subnet
    Properties:
      VpcId: !Ref VPC
      AvailabilityZone: !Select [0, !GetAZs '']
      CidrBlock: !Ref PublicSubnet1CIDR
      MapPublicIpOnLaunch: true
      Tags:
        - Key: Name
          Value: !Sub ${Environment}-acres-public-subnet-1

  PublicSubnet2:
    Type: AWS::EC2::Subnet
    Properties:
      VpcId: !Ref VPC
      AvailabilityZone: !Select [1, !GetAZs '']
      CidrBlock: !Ref PublicSubnet2CIDR
      MapPublicIpOnLaunch: true
      Tags:
        - Key: Name
          Value: !Sub ${Environment}-acres-public-subnet-2

  PublicRouteTable:
    Type: AWS::EC2::RouteTable
    Properties:
      VpcId: !Ref VPC
      Tags:
        - Key: Name
          Value: !Sub ${Environment}-acres-public-rt

  PublicRoute:
    Type: AWS::EC2::Route
    DependsOn: AttachGateway
    Properties:
      RouteTableId: !Ref PublicRouteTable
      DestinationCidrBlock: 0.0.0.0/0
      GatewayId: !Ref InternetGateway

  PublicSubnet1RouteTableAssociation:
    Type: AWS::EC2::SubnetRouteTableAssociation
    Properties:
      SubnetId: !Ref PublicSubnet1
      RouteTableId: !Ref PublicRouteTable

  PublicSubnet2RouteTableAssociation:
    Type: AWS::EC2::SubnetRouteTableAssociation
    Properties:
      SubnetId: !Ref PublicSubnet2
      RouteTableId: !Ref PublicRouteTable

  # Security Groups
  GradioSecurityGroup:
    Type: AWS::EC2::SecurityGroup
    Properties:
      GroupDescription: Security group for Gradio service
      VpcId: !Ref VPC
      SecurityGroupIngress:
        - IpProtocol: tcp
          FromPort: 7860
          ToPort: 7860
          CidrIp: 0.0.0.0/0
          Description: INTERNET HTTPS
        - IpProtocol: tcp
          FromPort: 80
          ToPort: 80
          CidrIp: 0.0.0.0/0
          Description: INTERNET HTTP
      SecurityGroupEgress:
        - IpProtocol: -1
          CidrIp: 0.0.0.0/0
  
  FastAPISecurityGroup:
    Type: AWS::EC2::SecurityGroup
    Properties:
      GroupDescription: Security group for FastAPI service
      VpcId: !Ref VPC
      SecurityGroupIngress:
        - IpProtocol: tcp
          FromPort: 8000
          ToPort: 8000
          CidrIp: 0.0.0.0/0
          Description: INTERNET HTTPS
        - IpProtocol: tcp
          FromPort: 80
          ToPort: 80
          CidrIp: 0.0.0.0/0
          Description: INTERNET HTTP
      SecurityGroupEgress:
        - IpProtocol: -1
          CidrIp: 0.0.0.0/0


  # IAM Roles and Policies
  # Gradio Execution Role - for pulling images and logging
  GradioTaskExecutionRole:
    Type: AWS::IAM::Role
    Properties:
      AssumeRolePolicyDocument:
        Version: '2012-10-17'
        Statement:
          - Effect: Allow
            Principal:
              Service: ecs-tasks.amazonaws.com
            Action: sts:AssumeRole
      ManagedPolicyArns:
        - arn:aws:iam::aws:policy/service-role/AmazonECSTaskExecutionRolePolicy
      Policies:
        - PolicyName: GradioExecutionPolicy
          PolicyDocument:
            Version: '2012-10-17'
            Statement:
              - Effect: Allow
                Action:
                  - ecr:GetAuthorizationToken
                  - ecr:BatchCheckLayerAvailability
                  - ecr:GetDownloadUrlForLayer
                  - ecr:BatchGetImage
                Resource: '*'
              - Effect: Allow
                Action:
                  - logs:CreateLogStream
                  - logs:PutLogEvents
                Resource: 
                  - !Sub arn:aws:logs:${AWS::Region}:${AWS::AccountId}:log-group:/ecs/${Environment}-acres-gradio:*
                  - !Sub arn:aws:logs:${AWS::Region}:${AWS::AccountId}:log-group:/ecs/${Environment}-acres-gradio:log-stream:*

  # Gradio Task Role - for runtime permissions
  GradioTaskRole:
    Type: AWS::IAM::Role
    Properties:
      AssumeRolePolicyDocument:
        Version: '2012-10-17'
        Statement:
          - Effect: Allow
            Principal:
              Service: ecs-tasks.amazonaws.com
            Action: sts:AssumeRole
      Policies:
        - PolicyName: GradioTaskPolicy
          PolicyDocument:
            Version: '2012-10-17'
            Statement:
              # Add specific permissions needed by your Gradio application at runtime
              - Effect: Allow
                Action:
                  - s3:GetObject
                  - s3:PutObject
                Resource: !Sub arn:aws:s3:::${Environment}-acres-gradio-bucket/*
  
  # FastAPI Execution Role - for pulling images and logging
  FastAPITaskExecutionRole:
    Type: AWS::IAM::Role
    Properties:
      AssumeRolePolicyDocument:
        Version: '2012-10-17'
        Statement:
          - Effect: Allow
            Principal:
              Service: ecs-tasks.amazonaws.com
            Action: sts:AssumeRole
      ManagedPolicyArns:
        - arn:aws:iam::aws:policy/service-role/AmazonECSTaskExecutionRolePolicy
      Policies:
        - PolicyName: FastAPIExecutionPolicy
          PolicyDocument:
            Version: '2012-10-17'
            Statement:
              - Effect: Allow
                Action:
                  - ecr:GetAuthorizationToken
                  - ecr:BatchCheckLayerAvailability
                  - ecr:GetDownloadUrlForLayer
                  - ecr:BatchGetImage
                Resource: '*'
              - Effect: Allow
                Action:
                  - logs:CreateLogStream
                  - logs:PutLogEvents
                Resource: 
                  - !Sub arn:aws:logs:${AWS::Region}:${AWS::AccountId}:log-group:/ecs/${Environment}-acres-fastapi:*
                  - !Sub arn:aws:logs:${AWS::Region}:${AWS::AccountId}:log-group:/ecs/${Environment}-acres-fastapi:log-stream:*
  
  # FastAPI Task Role - for runtime permissions
  FastAPITaskRole:
    Type: AWS::IAM::Role
    Properties:
      AssumeRolePolicyDocument:
        Version: '2012-10-17'
        Statement:
          - Effect: Allow
            Principal:
              Service: ecs-tasks.amazonaws.com
            Action: sts:AssumeRole
      Policies:
        - PolicyName: FastAPITaskPolicy
          PolicyDocument:
            Version: '2012-10-17'
            Statement:
              # Add specific permissions needed by your FastAPI application at runtime
              - Effect: Allow
                Action:
                  - dynamodb:GetItem
                  - dynamodb:PutItem
                  - dynamodb:Query
                Resource: !Sub arn:aws:dynamodb:${AWS::Region}:${AWS::AccountId}:table/${Environment}-acres-fastapi-table
              # Allow FastAPI to make HTTP calls to Gradio service
              - Effect: Allow
                Action:
                  - execute-api:Invoke
                Resource: !Sub arn:aws:execute-api:${AWS::Region}:${AWS::AccountId}:*

  # ECS Cluster
  ECSCluster:
    Type: AWS::ECS::Cluster
    Properties:
      ClusterName: !Ref ECSClusterName
      Tags:
        - Key: Environment
          Value: !Ref Environment

  # Load Balancer for Gradio
  GradioALB:
    Type: AWS::ElasticLoadBalancingV2::LoadBalancer
    Properties:
      Name: !Sub ${Environment}-acres-gradio-alb
      Scheme: internet-facing
      LoadBalancerAttributes:
        - Key: idle_timeout.timeout_seconds
          Value: '60'
      Subnets:
        - !Ref PublicSubnet1
        - !Ref PublicSubnet2
      SecurityGroups:
        - !Ref GradioSecurityGroup

  GradioTargetGroup:
    Type: AWS::ElasticLoadBalancingV2::TargetGroup
    Properties:
      HealthCheckEnabled: true
      HealthCheckIntervalSeconds: 30
      HealthCheckPath: /
      HealthCheckPort: 7860
      HealthCheckTimeoutSeconds: 20
      HealthyThresholdCount: 2
      Name: !Sub ${Environment}-acres-gradio-tg
      Port: 7860
      Protocol: HTTP
      TargetType: ip
      UnhealthyThresholdCount: 5
      VpcId: !Ref VPC
      TargetGroupAttributes:
        - Key: deregistration_delay.timeout_seconds
          Value: '30'

  GradioHTTPSListener:
    # https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/aws-resource-elasticloadbalancingv2-listener.html
    Type: AWS::ElasticLoadBalancingV2::Listener
    Properties:
      DefaultActions:
        - Type: forward
          TargetGroupArn: !Ref GradioTargetGroup
      LoadBalancerArn: !Ref GradioALB
      # Certificates:
      #   - CertificateArn: !Ref CertificateArn
      Port: 7860
      Protocol: HTTP
  # GradioHTTPListener:
  #   # https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/aws-resource-elasticloadbalancingv2-listener.html
  #   Type: AWS::ElasticLoadBalancingV2::Listener
  #   Properties:
  #     Protocol: HTTP
  #     Port: 80
  #     LoadBalancerArn: !Ref GradioALB
  #     DefaultActions:
  #       - Type: redirect
  #         RedirectConfig:
  #           Protocol: "HTTPS"
  #           Port: 7860
  #           Host: "#{host}"
  #           Path: "/#{path}"
  #           Query: "#{query}"
  #           StatusCode: "HTTP_301"
  
  # Load Balancer for FastAPI
  FastAPIALB:
    Type: AWS::ElasticLoadBalancingV2::LoadBalancer
    Properties:
      Name: !Sub ${Environment}-acres-fastapi-alb
      Scheme: internet-facing
      LoadBalancerAttributes:
        - Key: idle_timeout.timeout_seconds
          Value: '60'
      Subnets:
        - !Ref PublicSubnet1
        - !Ref PublicSubnet2
      SecurityGroups:
        - !Ref FastAPISecurityGroup

  FastAPITargetGroup:
    Type: AWS::ElasticLoadBalancingV2::TargetGroup
    Properties:
      HealthCheckEnabled: true
      HealthCheckIntervalSeconds: 30
      HealthCheckPath: /docs  # FastAPI's Swagger UI path
      HealthCheckPort: 8000
      HealthCheckTimeoutSeconds: 20
      HealthyThresholdCount: 2
      Name: !Sub ${Environment}-acres-fastapi-tg
      Port: 8000
      Protocol: HTTP
      TargetType: ip
      UnhealthyThresholdCount: 5
      VpcId: !Ref VPC
      TargetGroupAttributes:
        - Key: deregistration_delay.timeout_seconds
          Value: '30'

  FastAPIHTTPSListener:
    # https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/aws-resource-elasticloadbalancingv2-listener.html
    Type: AWS::ElasticLoadBalancingV2::Listener
    Properties:
      DefaultActions:
        - Type: forward
          TargetGroupArn: !Ref FastAPITargetGroup
      LoadBalancerArn: !Ref FastAPIALB
      # Certificates:
      #   - CertificateArn: !Ref CertificateArn
      Port: 8000
      Protocol: HTTP
  # FastAPIHTTPListener:
  #   # https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/aws-resource-elasticloadbalancingv2-listener.html
  #   Type: AWS::ElasticLoadBalancingV2::Listener
  #   Properties:
  #     Protocol: HTTP
  #     Port: 80
  #     LoadBalancerArn: !Ref FastAPIALB
  #     DefaultActions:
  #       - Type: redirect
  #         RedirectConfig:
  #           Protocol: "HTTPS"
  #           Port: 8000
  #           Host: "#{host}"
  #           Path: "/#{path}"
  #           Query: "#{query}"
  #           StatusCode: "HTTP_301"

  # ECS Task Definitions
  GradioTaskDefinition:
    Type: AWS::ECS::TaskDefinition
    Properties:
      Family: !Sub ${Environment}-acres-gradio
      RequiresCompatibilities:
        - FARGATE
      Cpu: !Ref GradioTaskDefinitionCPU
      Memory: !Ref GradioTaskDefinitionMemory
      NetworkMode: awsvpc
      ExecutionRoleArn: !GetAtt GradioTaskExecutionRole.Arn
      TaskRoleArn: !GetAtt GradioTaskRole.Arn
      ContainerDefinitions:
        - Name: gradio
          Image: !Ref ContainerImageGradio
          PortMappings:
            - ContainerPort: 7860
          LogConfiguration:
            LogDriver: awslogs
            Options:
              awslogs-group: !Ref GradioLogGroup
              awslogs-region: !Ref AWS::Region
              awslogs-stream-prefix: gradio
  
  FastAPITaskDefinition:
    Type: AWS::ECS::TaskDefinition
    Properties:
      Family: !Sub ${Environment}-acres-fastapi
      RequiresCompatibilities:
        - FARGATE
      Cpu: !Ref FastAPITaskDefinitionCPU
      Memory: !Ref FastAPITaskDefinitionMemory
      NetworkMode: awsvpc
      ExecutionRoleArn: !GetAtt FastAPITaskExecutionRole.Arn
      TaskRoleArn: !GetAtt FastAPITaskRole.Arn
      ContainerDefinitions:
        - Name: fastapi
          Image: !Ref ContainerImageFastAPI
          PortMappings:
            - ContainerPort: 8000
          Environment:
            - Name: GRADIO_URL
              Value: !Sub http://${GradioALB.DNSName}:7860/
          LogConfiguration:
            LogDriver: awslogs
            Options:
              awslogs-group: !Ref FastAPILogGroup
              awslogs-region: !Ref AWS::Region
              awslogs-stream-prefix: fastapi

  # CloudWatch Log Groups
  GradioLogGroup:
    Type: AWS::Logs::LogGroup
    Properties:
      LogGroupName: !Sub /ecs/${Environment}-acres-gradio
      RetentionInDays: 30
  
  FastAPILogGroup:
    Type: AWS::Logs::LogGroup
    Properties:
      LogGroupName: !Sub /ecs/${Environment}-acres-fastapi
      RetentionInDays: 30


  # ECS Services
  GradioService:
    Type: AWS::ECS::Service
    DependsOn: 
      - GradioHTTPSListener
      # - GradioHTTPListener
    Properties:
      ServiceName: !Sub ${Environment}-acres-gradio
      Cluster: !Ref ECSCluster
      TaskDefinition: !Ref GradioTaskDefinition
      DesiredCount: 1
      LaunchType: FARGATE
      HealthCheckGracePeriodSeconds: 180
      LoadBalancers:
        - ContainerName: gradio
          ContainerPort: 7860
          TargetGroupArn: !Ref GradioTargetGroup
      NetworkConfiguration:
        AwsvpcConfiguration:
          AssignPublicIp: ENABLED
          SecurityGroups:
            - !Ref GradioSecurityGroup
          Subnets:
            - !Ref PublicSubnet1
            - !Ref PublicSubnet2
      DeploymentConfiguration:
        DeploymentCircuitBreaker:
          Enable: true
          Rollback: true
        MaximumPercent: 200
        MinimumHealthyPercent: 100
  
  FastAPIService:
    Type: AWS::ECS::Service
    DependsOn: 
      - GradioService
      - FastAPIHTTPSListener
      # - FastAPIHTTPListener
    Properties:
      ServiceName: !Sub ${Environment}-acres-fastapi
      Cluster: !Ref ECSCluster
      TaskDefinition: !Ref FastAPITaskDefinition
      DesiredCount: 1
      LaunchType: FARGATE
      HealthCheckGracePeriodSeconds: 180
      LoadBalancers:
        - ContainerName: fastapi
          ContainerPort: 8000
          TargetGroupArn: !Ref FastAPITargetGroup
      NetworkConfiguration:
        AwsvpcConfiguration:
          AssignPublicIp: ENABLED
          SecurityGroups:
            - !Ref FastAPISecurityGroup
          Subnets:
            - !Ref PublicSubnet1
            - !Ref PublicSubnet2
      DeploymentConfiguration:
        DeploymentCircuitBreaker:
          Enable: true
          Rollback: true
        MaximumPercent: 200
        MinimumHealthyPercent: 100
      # Add deployment controller for better rollout control
      DeploymentController:
        Type: ECS

Outputs:
  VpcId:
    Description: VPC ID
    Value: !Ref VPC

  PublicSubnet1:
    Description: Public Subnet 1
    Value: !Ref PublicSubnet1

  PublicSubnet2:
    Description: Public Subnet 2
    Value: !Ref PublicSubnet2

  GradioServiceUrl:
    Description: URL for the Gradio service
    Value: !Sub http://${GradioALB.DNSName}:7860/

  ECSClusterName:
    Description: Name of the ECS cluster
    Value: !Ref ECSCluster

  GradioServiceName:
    Description: Name of the Gradio service
    Value: !GetAtt GradioService.Name
  
  FastAPIServiceName:
    Description: Name of the FastAPI service
    Value: !GetAtt FastAPIService.Name
  
  FastAPIServiceUrl:
    Description: URL for the FastAPI service
    Value: !Sub http://${FastAPIALB.DNSName}:8000/