Moleculer.js Microservices

This project demonstrates a microservices architecture using Moleculer.js, a fast and powerful microservices framework for Node.js. It showcases how to create and connect multiple services, implement API gateways, and interact with a SQLite database.

Project Structure

The project consists of two main microservices:

1. Auth Service
2. User Service

Both services are independent and communicate through the Moleculer broker.

Services

1. Auth Service

Port: 3001 Base URL: http://localhost:3001/api/auth

Endpoints:

1. Login

   • Method: POST
   • Path: /login
   • Action: auth.login

2. Verify Token

   • Method: POST
   • Path: /verify
   • Action: auth.verify

2. User Service

Port: 3000 Base URL: http://localhost:3000/api

Endpoints:

1. Register User

   • Method: POST
   • Path: /user
   • Action: user.registerUser

2. Get All Users

   • Method: GET
   • Path: /user
   • Action: user.getAllUsers

3. Get User by ID

   • Method: GET
   • Path: /user/:id
   • Action: user.getUser

4. Remove User

   • Method: DELETE
   • Path: /user/:id
   • Action: user.removeUser

Moleculer.js Features Demonstrated

1. Service Creation: Each service is created using broker.createService().
2. Action Definition: Actions are defined within each service, representing the service's capabilities.
3. API Gateway: Moleculer-web is used to create API gateways for each service.
4. Inter-service Communication: The Auth service calls the User service to validate credentials.
5. Param Validation: Action parameters are validated using Moleculer's built-in validator.

Database Integration

• SQLite3 is used as the database.
• Database operations are performed within service actions.
• SQL queries are separated into a queries.js file for better organization.

Starting the Application

The application is started from index.js, which initializes the Moleculer broker and starts all services.