rest_rpc/examples/server/main.cpp

#include <rest_rpc.hpp>
using namespace rest_rpc;
using namespace rpc_service;
#include <fstream>

#include "qps.h"

struct dummy{
	int add(rpc_conn conn, int a, int b) {
	    std::cout << "ohhhhhhhhhhh invoked: a=" << a << ", b=" << b << std::endl;
		return a + b; 
	}
};

std::string translate(rpc_conn conn, const std::string& orignal) {
	std::string temp = orignal;
	for (auto& c : temp) { 
		c = std::toupper(c); 
	}
	return temp;
}

void hello(rpc_conn conn, const std::string& str) {
	std::cout << "hello " << str << std::endl;
}

struct person {
	int id;
	std::string name;
	int age;

	MSGPACK_DEFINE(id, name, age);
};

std::string get_person_name(rpc_conn conn, const person& p) {
	return p.name;
}

person get_person(rpc_conn conn) {
	return { 1, "tom", 20 };
}

void upload(rpc_conn conn, const std::string& filename, const std::string& content) {
	std::cout << content.size() << std::endl;
	std::ofstream file(filename, std::ios::binary);
	file.write(content.data(), content.size());
}

std::string download(rpc_conn conn, const std::string& filename) {
	std::ifstream file(filename, std::ios::binary);
	if (!file) {
		return "";
	}

	file.seekg(0, std::ios::end);
	size_t file_len = file.tellg();
	file.seekg(0, std::ios::beg);
	std::string content;
	content.resize(file_len);
	file.read(&content[0], file_len);
	std::cout << file_len << std::endl;

	return content;
}

qps g_qps;

std::string get_name(rpc_conn conn, const person& p) {
	g_qps.increase();
	return p.name;
}

//if you want to response later, you can use async model, you can control when to response
void async_echo(rpc_conn conn, const std::string& src) {
	auto req_id = conn.lock()->request_id();//note: you need keep the request id at that time, and pass it into the async thread
	
	std::thread thd([conn, req_id, src] {
		std::this_thread::sleep_for(std::chrono::seconds(1));
		auto conn_sp = conn.lock();
		if (conn_sp) {
			conn_sp->pack_and_response(req_id, std::move(src));
		}
	});
	thd.detach();
}

std::string echo(rpc_conn conn, const std::string& src) {
  g_qps.increase();
	return src;
}

int get_int(rpc_conn conn, int val) {
	return val;
}

void test_ssl() {
    rpc_server server(9000, std::thread::hardware_concurrency(), { "server.crt", "server.key" });
    server.register_handler("hello", hello);
    server.register_handler("echo", echo);
    server.run();
}

void benchmark_test(){
  rpc_server server(9000, std::thread::hardware_concurrency());
  server.register_handler("echo", echo);
  server.run();
}

int main() {
//  benchmark_test();
	rpc_server server(9000, std::thread::hardware_concurrency());

	dummy d;
	server.register_handler("add", &dummy::add, &d);
	server.register_handler("translate", translate);
	server.register_handler("hello", hello);
	server.register_handler("get_person_name", get_person_name);
	server.register_handler("get_person", get_person);
	server.register_handler("upload", upload);
	server.register_handler("download", download);
	server.register_handler("get_name", get_name);
	server.register_handler<Async>("async_echo", async_echo);
	server.register_handler("echo", echo);
	server.register_handler("get_int", get_int);

	server.register_handler("publish_by_token", [&server](rpc_conn conn, std::string key, std::string token, std::string val) {
		server.publish_by_token(std::move(key), std::move(token), std::move(val));
	});

	server.register_handler("publish", [&server](rpc_conn conn, std::string key, std::string token, std::string val) {
		server.publish(std::move(key), std::move(val));
	});

	std::thread thd([&server] {
		person p{ 1, "tom", 20 };
		while (true) {
			server.publish("key", "hello subscriber");
			auto list = server.get_token_list();
			for (auto& token : list) {				
				server.publish_by_token("key", token, p);
				server.publish_by_token("key1", token, "hello subscriber1");
			}
			std::this_thread::sleep_for(std::chrono::milliseconds(50));
		}
	});

	server.run();

	std::string str;
	std::cin >> str;
}