memgraph/speedy/speedy.hpp

124 lines
3.1 KiB
C++

/** @file speedy.hpp
* @brief Speedy - Cpp Web Application Framework
*
* Blazingly fast web application framework. Designed like
* http://expressjs.com, one of its mail goal is also simple usage.
*
* @author Dominik Tomicevic (domko)
* @author Marko Budiselic (buda)
*/
#ifndef MEMGRAPH_SPEEDY_SPEEDY_HPP
#define MEMGRAPH_SPEEDY_SPEEDY_HPP
#include "io/uv/uv.hpp"
#include "http/http.hpp"
#include "r3.hpp"
#include "request.hpp"
#include "response.hpp"
#include "middleware.hpp"
#include "rapidjson_middleware.hpp"
namespace sp
{
class Speedy
{
public:
using sptr = std::shared_ptr<Speedy>;
using server_t = http::HttpServer<Request, Response>;
using request_cb_t = server_t::request_cb_t;
Speedy(uv::UvLoop::sptr loop, const std::string& prefix = "",
size_t capacity = 100)
: server(*loop), prefix(std::move(prefix)), router(capacity)
{
middlewares.push_back(rapidjson_middleware);
}
Speedy(Speedy&) = delete;
Speedy(Speedy&&) = delete;
void use(Middlewares::middleware_cb_t cb)
{
middlewares.push_back(cb);
}
void get(const std::string& path, server_t::request_cb_t cb)
{
router.insert(R3::Method::GET, join(prefix, path), cb);
}
void post(const std::string& path, server_t::request_cb_t cb)
{
router.insert(R3::Method::POST, join(prefix, path), cb);
}
void put(const std::string& path, server_t::request_cb_t cb)
{
router.insert(R3::Method::PUT, join(prefix, path), cb);
}
void del(const std::string& path, server_t::request_cb_t cb)
{
router.insert(R3::Method::DELETE, join(prefix, path), cb);
}
void listen(const http::Ipv4& ip)
{
router.compile();
server.listen(ip, [this](Request& req, Response& res) {
// run middlewares
auto result = middlewares.run(req, res);
// if they signaled false, stop the further execution
if(!result)
return;
auto route = router.match(R3::to_r3_method(req.method), req.url);
if(!route.exists())
return res.send(http::Status::NotFound, "Resource not found");
route.populate(req);
route(req, res);
});
}
private:
server_t server;
std::string prefix;
R3 router;
Middlewares middlewares;
std::string join(const std::string& prefix, const std::string& path)
{
// check if prefix has a trailing /
if(prefix.back() == '/')
{
// prefix has a / on the end so remove the / from the path
// if it has it too. e.g /db/data/ + /node = /db/data/node
if(path.front() == '/')
return prefix + path.substr(1);
// there is only one / so it's ok to concat them
return prefix + path;
}
// the prefix doesn't have a slash
if(path.front() == '/')
// the path has though, so it's ok to concat them
return prefix + path;
// neither the prefix or the path have a / so we need to add it
return prefix + '/' + path;
}
};
}
#endif