qtgrpc/examples/grpc/magic8ball/server/main.cpp

61 lines
1.7 KiB
C++

// Copyright (C) 2024 The Qt Company Ltd.
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause
#include "exampleservice.grpc.pb.h"
#include <grpc++/grpc++.h>
#include <array>
#include <iostream>
using namespace qtgrpc::examples;
// Logic and data behind the server's behavior.
class ExampleServiceImpl final : public ExampleService::Service
{
inline static std::array<std::string, 10> answers = {
"Yes", "Yep", "Most\nlikely", "It is\ncertain", "No",
"Nope", "Try later", "Are you\nsure?", "Maybe", "Very\ndoubtful"
};
std::string getRandomAnswer()
{
return answers.at(rand() % answers.size());
}
//! [answerMethod]
grpc::Status answerMethod(grpc::ServerContext *, const AnswerRequest *request,
AnswerResponse *response) override
{
if (request->question().empty()) {
std::cerr << "Question is empty" << std::endl;
return grpc::Status(grpc::StatusCode::INVALID_ARGUMENT, "Question is empty");
}
std::cout << "Received question: " << request->question() << std::endl;
response->set_message(getRandomAnswer());
return grpc::Status();
};
//! [answerMethod]
};
int main(int argc, char *argv[])
{
ExampleServiceImpl service;
grpc::ServerBuilder builder;
builder.AddListeningPort("127.0.0.1:50051", grpc::InsecureServerCredentials());
builder.RegisterService(&service);
std::unique_ptr<grpc::Server> server(builder.BuildAndStart());
if (!server) {
std::cout << "Creating server failed." << std::endl;
return -1;
}
std::cout << "Server listening on port 50051" << std::endl;
server->Wait();
return 0;
}