Serverless TODO: Udacity Cloud Developer Nanodegree - Project 4

Simple Todo application developed using Serverless framework, AWS Lambda, Amazon API Gateway, Amazon DynamoDB, Amazon S3, AWS X-Ray, and Auth0

Functionality

• This application will allow creating, removing, updating fetching Todo items (CRUD).
• Each Todo item can optionally have an attachment image stored on Amazon S3.
• Each user ONLY has access to Todo items that he/she has created.

Frontend

React application consuming the serverless backend api (in the client/ directory)

Backend

Lambda Functions

• Auth - This function implements a Lambda (Custom) Authorizer for API Gateway that authenticates requests to all the other functions.

• GetTodos - Return all Todos for a current user.

• CreateTodo - Creates a new Todo for a current user.

• UpdateTodo - Updates a Todo item created by a current user.

• DeleteTodo - Deletes a Todo item created by a current user.

• GenerateUploadUrl - Returns a pre-signed URL that can be used to upload an attachment file for a Todo item.

Serverless Framework

Serverless Dashboard

Service Information

Authentication

Database

Amazon DynamoDB table which stores users' Todo items

KeySchema:
      - AttributeName: userId
        KeyType: HASH
      - AttributeName: todoId
        KeyType: RANGE

File Strorage

Amazon S3 bucket that stores Todo items attachment images

AWS X-RAY Service Map