Payment Microservice

This is a microservice written in Go for handling payments using gRPC and REST.

Use tools:

• Golang 1.22
• Protobuf
• Docker
• Kubernetes

Features

• Payment Service: Handles payment requests and processes them using a simulated bank.
• Transaction Service: Manages transactions and stores them in an in-memory data structure.
• User Service: Handles user-related operations (not implemented in the provided code).

Getting Started

1. Clone the repository:

https://github.com/Hallexz/paymentSystem.git

2. Navigate to the project directory:

cd paymentSystem

3. Build the Docker image:

docker build -t payment-microserv .

4. Run the Docker container:

docker run -p 50051:50051 payment-microserv

The microservice will start running on localhost:50051.

Usage

The microservice exposes the following gRPC services:

• PaymentService
  • Pay(PaymentRequest) returns (PaymentResponse): Processes a payment request.
• TransactionService
  • GetTransactions(GetTransactionsRequest) returns (stream Transaction): Retrieves a stream of transactions.
• UserService
  • CreateUser(CreateUserRequest) returns (CreateUserResponse): Creates a new user (not implemented).
  • GetUser(GetUserRequest) returns (User): Retrieves user information (not implemented).

You can use a gRPC client (e.g., gRPC CLI, Bloom RPC, or a custom client) to interact with the microservice.

Kubernetes Deployment

The repository includes a Kubernetes deployment manifest (payment-deployment.yaml) for deploying the microservice on a Kubernetes cluster. The deployment creates three replicas of the microservice.

To deploy the microservice on a Kubernetes cluster, run:

kubectl apply -f payment-deployment.yaml

Contributing

Contributions are welcome! If you find any issues or have suggestions for improvements, please open an issue or submit a pull request.