use lambda -> s3 as activitypub inbox

inbox_lambda.js

import json
import boto3
from hashlib import md5
from datetime import datetime

// simple lambda to act as an activitypub inbox so you can receive
// follow requests, comments, etc from other servers. 

// 1. set this up in a lambda and point API gateway at it.
// 2. set the api URL as your inbox in your actor JSON response
// assumes you have a bucket called "acitvitypub" and this lambda
// has permission to put objects to it


def lambda_handler(event, context):    
    event_str = json.dumps(event, indent=2)
    time_str = datetime.now().strftime("%Y%m%d-%H%M%S")
    hash_str = md5(event_str.encode()).hexdigest()
    key = f"events/{time_str}-{hash_str}.json"
    
    s3 = boto3.client('s3')

    response = s3.put_object(
        Body=json.dumps(event, indent=2),
        Bucket='activitypub',
        Key=key
    ) 
    
    
    return {
        'statusCode': 200,
        'body': json.dumps('message received.')
    }