A note that connects to Lambda via AWS API Gateway (HTTP API) to process POST data

Don't forget to hurry.

• POST parameters are in event ['body'].
• Base64 encoded if isBase64Encoded is enabled in the API Gateway settings

If you pass the JSON encoded version when throwing it to the API, you can get the JSON after Base64 decoding. In that case, JSON parsing processing is performed instead of parsing the request query.

import json
import base64
import urllib.parse

def lambda_handler(event, context):

    #Decode because the POST parameter is BASE64 encoded
    decoded_body = base64.b64decode(event['body']).decode()
    #Convert POST parameters to dict type
    post_params = urllib.parse.parse_qs(decoded_body)

    result = {}
    result['message'] = 'Response from lambda'

    #See POSTed data(Note that it is an array)
    result['name'] = post_params['name'][0]
    result['email'] = post_params['email'][0]

    return {
        'statusCode': 200,
        'body': json.dumps(result)
    }