template.yaml

AWSTemplateFormatVersion: '2010-09-09'
Transform: AWS::Serverless-2016-10-31
Description: >
  fastapi response streaming

# More info about Globals: https://github.com/awslabs/serverless-application-model/blob/master/docs/globals.rst
Globals:
  Function:
    Timeout: 60

Resources:
  FastAPIFunction:
    Type: AWS::Serverless::Function
    Properties:
      CodeUri: app/
      Handler: run.sh
      Runtime: python3.12
      MemorySize: 256
      Environment:
        Variables:
          AWS_LAMBDA_EXEC_WRAPPER: /opt/bootstrap
          AWS_LWA_INVOKE_MODE: response_stream
          PORT: 8000
      Layers:
        - !Sub arn:aws:lambda:${AWS::Region}:753240598075:layer:LambdaAdapterLayerX86:23
      FunctionUrlConfig:
        AuthType: NONE
        InvokeMode: RESPONSE_STREAM

Outputs:
  FastAPIFunctionUrl:
    Description: "Function URL for FastAPI function"
    Value: !GetAtt FastAPIFunctionUrl.FunctionUrl
  FastAPIFunction:
    Description: "FastAPI Lambda Function ARN"
    Value: !GetAtt FastAPIFunction.Arn