This is a backend server (RESTful API) for a mind map web application.
Mind map data is represented and stored as a tree data structure in Amazon RDS for PostgreSQL.
Controllers and services work together to read/write data from and to the PostgreSQL database and respond appropriately to the client.
Files in /api/src/controllers orchestrate the process of responding to a client with requested data. The process includes error handling.
Files in /api/src/services interfaces the PostgreSQL database. These service functions construct SQL statements, send queries to the database, and return the outcome of the queries to the controller function that invoked itself. A PostgreSQL client, node-postgres is used to interface the database.
A set of functions defined in api/src/utils/request-validation.js cleans the data received from the client before passing them on to the next middleware.
The server writes operational logs to the standard output and a JSON file mainly for debugging purposes. Logger used is bunyan.
The server uses Sign in With Google to authenticate its clients. It utilizes middlewares from the Passport.js library to talk with Google's authorization and resource servers.
The server uses express-session to manipulate login sessions and Redis to store the session data. The server can send a persistent cookie containing an encrypted session identifier which the client can send back to the server in successive requests.
The application is deployed on AWS as an EC2 instance running Ubuntu Server at http://mindnet.me:4242
Cloud DNS service by Amazon Route 53 is used to point the domain name to the EC2 instance.