This project demonstrates a microservice architecture with two services: product-service and order-service. Each service is built using NestJS and communicates with a PostgreSQL database. The services are containerized using Docker and orchestrated with Docker Compose.

• API Endpoints
  • Product Service
  • Order Service
• Setup
  • Prerequisites
  • Installation
  • Running the Services
  • Running Tests
• Environment Variables

• GET /products/all: Retrieve all products.
• GET /products/:id: Retrieve a single product by ID.
• POST /products/new: Create a new product.
• PUT /products/:id: Update an existing product.
• DELETE /products/:id: Delete a product.
• POST /products/decrease-quantity: Decrease the quantity of a product.

• GET /orders/all: Retrieve all orders.
• GET /orders/:id: Retrieve a single order by ID.
• POST /orders/new: Place a new order.

• Docker
• Docker Compose

1. Clone the repository:

   git clone https://github.com/yourusername/microservice-demo.git
   cd microservice-demo
   

2. Build the Docker images:

   docker-compose up -d

3. Check that the databases created on pgadmin:

   • Open your browser and go to http://localhost:8080
   • Login with the following credentials:
     • Email: [email protected]
     • Password: admin
   • Add a new server with the following details:
     • Name: products or orders
     • Host name/address: product-db or order-db
     • Port: 5432
     • Maintainance database: productdb or orderdb
     • Username: postgres
     • Password: 1
   • Click Save

4. Setting up Postman for API invocations:

   • Import the Postman collection from postman folder.
   • Update the environment variables with the correct values:
     • base_url: http://localhost:8081 (for api-gateway)
     • token: leave empty (for now)
   • In the Authentication Folder invoke the Generate Token request to update the token value automatically.

5. Happy Coding!