template.yaml

AWSTemplateFormatVersion: '2010-09-09'
Transform: AWS::Serverless-2016-10-31
Description: lambda-response-stream-sample

Resources:
  ChatFunctionRole:
    Type: AWS::IAM::Role
    Properties:
      AssumeRolePolicyDocument:
        Version: 2012-10-17
        Statement:
          - Effect: Allow
            Principal:
              Service:
                - lambda.amazonaws.com
            Action:
              - sts:AssumeRole
      ManagedPolicyArns:
        - arn:aws:iam::aws:policy/service-role/AWSLambdaBasicExecutionRole
      Policies:
        - PolicyName: SSMOpenAIApiKeyRead
          PolicyDocument:
            Version: 2012-10-17
            Statement:
              - Effect: Allow
                Action:
                  - "ssm:GetParameter"
                Resource:
                  - !Sub "arn:aws:ssm:*:${AWS::AccountId}:parameter/openai/api-key"
      Path: "/"

  ChatFunction:
    Type: AWS::Serverless::Function
    Properties:
      Role: !GetAtt ChatFunctionRole.Arn
      CodeUri: chat/dist
      Handler: app.lambdaHandler
      Runtime: nodejs18.x
      Timeout: 60
      Architectures:
        - x86_64
      FunctionUrlConfig:
        AuthType: NONE
        InvokeMode: RESPONSE_STREAM # LambdaレスポンスストリームON
        Cors:
          AllowCredentials: true
          AllowMethods: ["POST"]
          AllowOrigins: ["*"]
          AllowHeaders: ["*"]
#    Metadata: # Manage esbuild properties
#      BuildMethod: esbuild
#      BuildProperties:
#        Minify: true
#        Target: "es2022"
#        Sourcemap: true
#        EntryPoints:
#          - app.ts

Outputs:
  ChatApi:
    Description: "Chat Lambda Function URL"
    Value: !GetAtt ChatFunctionUrl.FunctionUrl
  ChatFunction:
    Description: "Chat Lambda Function ARN"
    Value: !GetAtt ChatFunction.Arn