Nogopy

Hi, this a demo of how to use jwt for authentication in microservices

Keep in mind that this is a demo of how to authenticate using jwt, we don't cover any issues such as sql injection, you can easily produce it to hack the server.

Project layout

.
├── cmd                    # Main applications.
├── config                 # Configuration file templates or default configs.
    ├── database           # Config for database.
    ├── environment        # Config for environment variables.
    ├── infrastructure     # Config for http server and worker jobs.
├── docs                   # Swagger API.
├── internal               # Private application and library code.
    ├── app
        ├── jwt-for-authentication
            ├── controllers        # REST controllers.
            ├── dto                # Data transfer object.
            ├── middlware          # Middleware of REST server.
            ├── models             # Model of RDBMS or NoSQL.
            ├── repositories       # Repositories layer.
            ├── routers            # Routing.
            ├── services           # Business services.
            ├── utils              # Utility.
├── script                         # Scripts to perform various build or test
└── README.md

Dependency

Nogopy uses a number of open source projects to work properly:

• Gorm - The fantastic ORM library for Golang
• Gin - Gin is a web framework written in Go
• Logrus - Logrus is a structured logger for Go

Installation

Golang-template requires Golang v1.16 to run.

Install the dependencies and devDependencies and start the server.

export PATH=$PATH:$HOME/go/bin
go mod init github.com/nogopy/jwt-for-authentication
go mod tidy
go get github.com/codegangsta/gin

Run

Run a local mysql server if you don't have a remote one. Here I'm on Mac

Run script to create a simple login database and user table

cd /usr/local/mysql/bin
./mysql -u root -p then enter password
create database login

CREATE TABLE `user` (
  `id` int(11) unsigned NOT NULL AUTO_INCREMENT,
  `username` varchar(200) NOT NULL,
  `password` varchar(200) NOT NULL,
  `created_at` datetime DEFAULT NULL,
    PRIMARY KEY (`id`),
    KEY `idx_username` (`username`)
) ENGINE=InnoDB AUTO_INCREMENT=1 DEFAULT CHARSET=utf8;

Then use a tool to check if everything is ok, I recommend use Datagrip

Clone .env.example to .env then input your config

cd into jwt-for-authentication and create your private key and public key

ssh-keygen -t rsa -b 4096 -m PEM -f jwtRS256.key
# Don't add passphrase
openssl rsa -in jwtRS256.key -pubout -outform PEM -out jwtRS256.key.pub

Finally, run the script file and enjoy

./script/run.sh

Verify the deployment by navigating to your server address in your preferred browser.

127.0.0.1:8080

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What is jwt and how it works https://jwt.io/introduction

Jwt flow

Source: https://www.freecodecamp.org/news/how-to-setup-jwt-authorization-and-authentication-in-spring/