CalculatorServer.cc

#include <iostream>
#include <grpcpp/grpcpp.h>
#include "calculator.grpc.pb.h"

using grpc::Server;
using grpc::ServerBuilder;
using grpc::ServerContext;
using grpc::Status;
using calculator::InputNumber;
using calculator::OutputNumber;
using calculator::Calculator;

class CalculatorImpl final : public Calculator::Service
{
	Status Addition(ServerContext* context, const InputNumber* request, OutputNumber* response) override
	{
		response->set_num(request->num1()+request->num2());
		return Status::OK;
	}

	Status Subraction(ServerContext* context, const InputNumber* request, OutputNumber* response) override
	{
		response->set_num(request->num1() - request->num2());
		return Status::OK;
	}

	Status Multiply(ServerContext* context, const InputNumber* request, OutputNumber* response) override
	{
		response->set_num(request->num1() * request->num2());
		return Status::OK;
	}

	Status Divide(ServerContext* context, const InputNumber* request, OutputNumber* response) override
	{
		response->set_num(request->num1() / request->num2());
		return Status::OK;
	}
};

void RunServer() {
  std::string server_address("0.0.0.0:50051");
  CalculatorImpl service;

  ServerBuilder builder;
  // Listen on the given address without any authentication mechanism.
  builder.AddListeningPort(server_address, grpc::InsecureServerCredentials());
  // Register "service" as the instance through which we'll communicate with
  // clients. In this case it corresponds to an *synchronous* service.
  builder.RegisterService(&service);
  // Finally assemble the server.
  std::unique_ptr<Server> server(builder.BuildAndStart());
  std::cout << "Server listening on " << server_address << std::endl;

  // Wait for the server to shutdown. Note that some other thread must be
  // responsible for shutting down the server for this call to ever return.
  server->Wait();
}

int main(int argc, char** argv)
{
	  RunServer();
	  return 0;
}