Using Spring Boot together with gRPC and Protobuf

Question

Anyone having any examples or thoughts using gRPC together with Spring Boot?

Answer 1

If you need a gRPC client library, i.e. consume stubs, check out my library https://github.com/sfcodes/grpc-client-spring-boot

This library will automatically scan your classpath, find all gRPC stub classes, instantiate them, and register them as beans with the ApplicationContext; allowing you to easily @Autowire and inject them just like you would any other Spring bean. For example:

@RestController
public class GreeterController {

    @Autowired  // <===== gRPC stub is autowired!
    private GreeterGrpc.GreeterBlockingStub greeterStub;

    @RequestMapping(value = "/sayhello")
    public String sayHello(@RequestParam String name) {
        HelloRequest request = HelloRequest.newBuilder().setName(name).build();
        HelloReply reply = greeterStub.sayHello(request);
        return reply.getMessage();
    }
}

For gRPC server library, I'd also recommend LogNet/grpc-spring-boot-starter.