This is a sample gRPC server implementation in Go, demonstrating basic gRPC service methods.

The simple-grpc application starts a gRPC server on port 50051. It provides a DemoService with several RPC methods to showcase different interaction patterns.

The server implements the following methods:

1. Health: Returns a simple boolean status.
2. Hello: Responds with a greeting message.
3. Echo: Returns the same message it received.
4. Add: Takes two integers and returns their sum.
5. GetTime: Returns the current server time in UTC.
6. GetResource: Simulates fetching a resource by ID.

• Go 1.23 or higher
• Protobuf compiler (protoc) installed (if you want to regenerate files)

1. Clone the repository.

2. Navigate to the simple-grpc directory:

   cd simple-grpc

3. Download dependencies:

   go mod tidy

Start the server using go run:

go run main.go

You should see:

2024/02/17 14:18:41 gRPC server listening on [::]:50051

You can use grpcurl to interact with the server. Ensure grpcurl is installed.

grpcurl -plaintext -proto pb/demo.proto localhost:50051 demo.DemoService/Health

grpcurl -plaintext -proto pb/demo.proto localhost:50051 demo.DemoService/Hello

grpcurl -plaintext -proto pb/demo.proto -d '{"msg": "Greetings"}' localhost:50051 demo.DemoService/Echo

grpcurl -plaintext -proto pb/demo.proto -d '{}' localhost:50051 demo.DemoService/Echo

grpcurl -plaintext -proto pb/demo.proto -d '{"a": 50, "b": 25}' localhost:50051 demo.DemoService/Add

grpcurl -plaintext -proto pb/demo.proto -d '{"id": "user-123"}' localhost:50051 demo.DemoService/GetResource

• main.go: The main entry point and server implementation.
• pb/: Contains the generated gRPC code and .proto definition.
• go.mod / go.sum: Go module dependency files.