gRPC Calculator

gRPC Calculator – just a simple example of a gRPC service written in Go. You'll find a few standard math operations implemented (Add, Subtract, Multiply, Divide), and it's all wrapped up with some middleware for logging and recovery

Protobuf contract

https://github.com/vshulcz/grpc-protos

Getting Started

1. Clone the repo:

   git clone https://github.com/vshulcz/grpc-calculator.git
   cd grpc-calculator

2. Install dependencies:

   go mod tidy

3. Compile the project:

   go build -o calculator ./cmd/calculator

4. Run the gRPC server:

   ./calculator --config="config/dev.yaml"

5. Test it out with grpcurl: Install grpcurl:

   brew install grpcurl

   To see the available services:

   grpcurl -plaintext localhost:5105 list

   To call the Add method:

   grpcurl -plaintext -d '{"number1": 5, "number2": 3}' localhost:5105 calculator.Calculator.Add

6. Run the tests:

   go test ./... -v

Configuration

The configuration is stored in YAML files (e.g., config/dev.yaml), and we load it using cleanenv.