template.yaml

AWSTemplateFormatVersion: "2010-09-09"
Transform: AWS::Serverless-2016-10-31

Globals:
  Function:
    MemorySize: 128
    Architectures: ["arm64"]
    Handler: bootstrap
    Runtime: provided.al2
    Timeout: 5
    Tracing: Active
    Environment:
      Variables:
        TABLE: !Ref Table

Resources:
  GetProductsFunction:
    Type: AWS::Serverless::Function
    Properties:
      CodeUri: functions/get-products/
      Events:
        Api:
          Type: HttpApi
          Properties:
            Path: /
            Method: GET
      Policies:
        - Version: "2012-10-17"
          Statement:
            - Effect: Allow
              Action: dynamodb:Scan
              Resource: !GetAtt Table.Arn
    Metadata:
      BuildMethod: makefile

  GetProductFunction:
    Type: AWS::Serverless::Function
    Properties:
      CodeUri: functions/get-product/
      Events:
        Api:
          Type: HttpApi
          Properties:
            Path: /{id}
            Method: GET
      Policies:
        - Version: "2012-10-17"
          Statement:
            - Effect: Allow
              Action: dynamodb:GetItem
              Resource: !GetAtt Table.Arn
    Metadata:
      BuildMethod: makefile

  DeleteProductFunction:
    Type: AWS::Serverless::Function
    Properties:
      CodeUri: functions/delete-product/
      Events:
        Api:
          Type: HttpApi
          Properties:
            Path: /{id}
            Method: DELETE
      Policies:
        - Version: "2012-10-17"
          Statement:
            - Effect: Allow
              Action: dynamodb:DeleteItem
              Resource: !GetAtt Table.Arn
    Metadata:
      BuildMethod: makefile

  PutProductFunction:
    Type: AWS::Serverless::Function
    Properties:
      CodeUri: functions/put-product/
      Events:
        Api:
          Type: HttpApi
          Properties:
            Path: /{id}
            Method: PUT
      Policies:
        - Version: "2012-10-17"
          Statement:
            - Effect: Allow
              Action: dynamodb:PutItem
              Resource: !GetAtt Table.Arn
    Metadata:
      BuildMethod: makefile

  DDBStreamsFunction:
    Type: AWS::Serverless::Function
    Properties:
      CodeUri: functions/products-stream/
      Timeout: 10
      Events:
        TableStream:
          Type: DynamoDB
          Properties:
            BatchSize: 1000
            FunctionResponseTypes:
              - ReportBatchItemFailures
            MaximumBatchingWindowInSeconds: 10
            StartingPosition: TRIM_HORIZON
            Stream: !GetAtt Table.StreamArn
      Environment:
        Variables:
          EVENT_BUS_NAME: !Ref EventBus
      MemorySize: 128
      Policies:
        - Version: "2012-10-17"
          Statement:
            - Effect: Allow
              Action: events:PutEvents
              Resource: !GetAtt EventBus.Arn

  Table:
    Type: AWS::DynamoDB::Table
    Properties:
      AttributeDefinitions:
        - AttributeName: id
          AttributeType: S
      BillingMode: PAY_PER_REQUEST
      KeySchema:
        - AttributeName: id
          KeyType: HASH
      StreamSpecification:
        StreamViewType: NEW_AND_OLD_IMAGES

  EventBus:
    Type: AWS::Events::EventBus
    Properties:
      Name: !Ref AWS::StackName

Outputs:
  ApiUrl:
    Description: "API Gateway endpoint URL"
    Value: !Sub "https://${ServerlessHttpApi}.execute-api.${AWS::Region}.amazonaws.com/"