var doc = require('dynamodb-doc');
var dynamo = new doc.DynamoDB();
const crypto = require('crypto');



exports.handler = function(event, context) {

    if (isEmptyObject(event))
    {
        console.log("Empty event");
        context.fail("400. No request headers.");
    }
    else
    {

        var payload = {};

        switch (event.operation)
        {
            case 'create':
            {
                payload.TableName = "my-table";
                payload.Key = {"userEmailAddress": event.userEmailAddress};
                dynamo.getItem(payload, function(err, data)
                {