grafana-alerting-lambda-polly.py

import json
import boto3
from contextlib import closing
import tempfile
import base64
from io import BytesIO
import random

def lambda_handler(event, context):
    # TODO implement
    qp = event.get('queryStringParameters', {})
    message = qp.get('message', 'hi')
    lang = qp.get('lang', 'en-US')
	
    voices = {
        'en-US': ['Salli', 'Joanna', 'Matthew', 'Ivy', 'Justin', 'Kendra', 'Kimberly', 'Joey'],
        'cmn-CN': ['Zhiyu'],
        'es-ES': ['Lucia', 'Enrique', 'Conchita'],
        'pt-BR': ['Vitoria', 'Camila', 'Ricardo'],
	}
    
    text = f'<speak>{message}</speak>'
    c = boto3.client('polly')
    rs = c.synthesize_speech(
        Engine='standard',
        LanguageCode=lang,
        OutputFormat='mp3',
        Text=text,
        TextType='ssml',
        VoiceId=random.choice(voices[lang])
    )
    with closing(rs['AudioStream']) as stream:
        body = stream.read()
       
    body = base64.b64encode(body)
    body = body.decode('utf8')
    return {
		'statusCode': 200,
		'headers': {
			'Content-Type': rs['ContentType'],
			'Access-Control-Allow-Origin': '*',
			'Access-Control-Allow-Headers': 'Content-Type,X-Amz-Date,X-Api-Key,X-Amz-Security-Token',
			'Access-Control-Allow-Methods': 'GET',
		},
		'isBase64Encoded': True,
		'body': body
	}