MathCATDemo/lambda/tts/template.yaml at main · daisy/MathCATDemo · GitHub

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AWSTemplateFormatVersion: '2010-09-09'
Transform: AWS::Serverless-2016-10-31
Description: MathCAT Demo TTS proxy (Polly, Google, Azure)

Parameters:
  AllowedOrigins:
    Type: String
    Default: 'https://daisy.github.io,http://localhost:8080,http://127.0.0.1:8080'
    Description: Comma-separated browser origins allowed to call this API
  TtsProvider:
    Type: String
    Default: polly
    AllowedValues:
      - polly
      - google
      - azure
    Description: Active speech engine for the proxy
  AzureSpeechKey:
    Type: String
    Default: ''
    NoEcho: true
  AzureSpeechRegion:
    Type: String
    Default: ''
  GoogleServiceAccountJson:
    Type: String
    Default: ''
    NoEcho: true

Resources:
  TtsFunction:
    Type: AWS::Serverless::Function
    Properties:
      CodeUri: .
      Handler: index.handler
      Runtime: nodejs24.x
      Architectures:
        - arm64
      Timeout: 30
      MemorySize: 512
      Environment:
        Variables:
          ALLOWED_ORIGINS: !Ref AllowedOrigins
          TTS_PROVIDER: !Ref TtsProvider
          AZURE_SPEECH_KEY: !Ref AzureSpeechKey
          AZURE_SPEECH_REGION: !Ref AzureSpeechRegion
          GOOGLE_SERVICE_ACCOUNT_JSON: !Ref GoogleServiceAccountJson
      Policies:
        - Statement:
            - Effect: Allow
              Action:
                - polly:SynthesizeSpeech
              Resource: '*'
      Events:
        TtsPost:
          Type: HttpApi
          Properties:
            Path: /tts
            Method: POST
        TtsOptions:
          Type: HttpApi
          Properties:
            Path: /tts
            Method: OPTIONS

Outputs:
  TtsApiUrl:
    Description: POST endpoint for the MathCAT demo frontend
    Value: !Sub 'https://${ServerlessHttpApi}.execute-api.${AWS::Region}.amazonaws.com/tts'