in index.js [158:171]
async function getDevicesByUsername (username) {
const params = {
TableName: config.deviceTable,
IndexName: "ByUsernameThingName",
KeyConditionExpression: "username = :username",
ExpressionAttributeValues: {
':username': username
}
};
const result = await ddb.query(params).promise();
return result.Items;
}