get.js

import * as dynamoDbLib from "./libs/dynamodb-lib";
import {success, failure} from "./libs/response-lib";

export async function main(event, context, callback){
    const params = {
        TableName: "notes", 
        Key: {
            userId: event.requestContext.identity.cognitoIdentityId,
            noteId: event.pathParameters.id
        }
    };

    try{
        const result = await dynamoDbLib.call("get", params);
        if (result.Item){
            // return the retrieved item
            callback(null, success(result.Item));
        } else {
            callback(null, failure({status: false, error: "Item not found"}));
        }
    } catch (e){
        console.log(e);
        callback(null, failure({status: false}));
    }
}