Backend Architecture

How to run

1. Clone this project and use your IDE of choice (IntelliJ is recommended)
2. This project uses MongoDB for product storage and MySQL for the rest, insert your own MongoDB and MySQL credentials in each services' .env file.
3. Make sure Docker and Postman are both installed.
4. Run docker compose up -d to get Keycloak and Kafka running.
5. Start all the services. A convenient way to do so is go to Run -> Edit Configurations and add all of the services' application, and press OK. Press Alt+8, select all of the services added earlier and press the green button to start.
6. Open Postman and head to your browser's http://localhost:8181 and click into Keycloak's administrator console, sign in with username=admin and password=admin.
7. Under Clients go to spring-cloud-client -> Credentials and copy the client secret.
8. Now go to Realm Settings and press OpenID Endpoint Configuration, copy the token_endpoint URL.
9. Go to Postman's Authorization tab, set type to OAuth 2.0 and under Configure New Token, set the properties as below:
   

• Grant Type = Client Credentials
• Access Token URL = {the token endpoint copied earlier}
• Client ID = spring-cloud-client
• Client Secret = {the client secret copied earlier}

10. Press Get New Access Token and press Use Token.
11. Now you can start making requests to the endpoints, do remember to get new access tokens from time to time as the token would expire.