HeliProject Project

This project consists of three microservices: gateway-service, account-service, and customer-service. These microservices are built using Golang and communicate with each other via gRPC. The project also includes a PostgreSQL database and RabbitMQ for event messaging.

Services

Gateway Service

The gateway-service acts as a gateway for the other two microservices and provides RESTful APIs for user registration, login, logout, deposit, withdraw, balance inquiry, and transaction history.

Account Service

The account-service is responsible for managing customer accounts, including deposit and withdraw operations. It also handles balance inquiries and transaction history. The service uses PostgreSQL for data storage and RabbitMQ for event messaging.

Customer Service

The customer-service manages customer records, including user registration, login, and logout. It uses PostgreSQL for data storage and provides gRPC endpoints for user management.

Project Dependencies

• Golang
• Docker
• Docker Compose
• PostgreSQL
• RabbitMQ

Running the Project

Prerequisites

Ensure you have Docker and Docker Compose installed on your machine.

Build and Run the Services

To build and run the services, use the provided Makefile. Navigate to the directory containing the Makefile and run the following commands:

Be aware that these commands should be executed inside "git bash for windows" or linux terminals.

1. Build all services:

   make build

2. Run all services:

   make run

Testing the Services

To run the tests for all the services, use the following command:

make test

Clean Up
To stop and remove all the services, use the following command:

make clean

API Documentation
    The gateway-service includes Swagger documentation for the APIs. Once the services are running, you can access the Swagger UI at:

http://localhost:8080/swagger/index.html

Environment Variables
    The following environment variables are used in the services:

    POSTGRES_HOST: Hostname for the PostgreSQL database.
    POSTGRES_USER: Username for the PostgreSQL database.
    POSTGRES_PASSWORD: Password for the PostgreSQL database.
    POSTGRES_DB: Database name for the PostgreSQL database.
    RABBITMQ_HOST: Hostname for RabbitMQ.
    These variables are defined in the docker-compose.yml file.

Directory Structure
.
├── gateway-service
│   ├── Dockerfile
│   ├── main.go
│   ├── account_service.go
│   ├── account_service_test.go
│   └── ...
├── account-service
│   ├── Dockerfile
│   ├── main.go
│   ├── account_service.go
│   ├── account_service_test.go
│   └── ...
├── customer-service
│   ├── Dockerfile
│   ├── main.go
│   └── ...
├── docker-compose.yml
└── Makefile

I've created an insomnia json file, named "test_api_insomnia.json" that could be imported into Insomnia software for testing the APIs.