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#pragma once
#include <chrono>
#include <string>
#include <functional>
#include <memory>
#include <future>
#include <cstdint>
#include <type_traits>
#include <thread>
#include "crow/settings.h"
#include "crow/logging.h"
#include "crow/utility.h"
#include "crow/routing.h"
#include "crow/middleware_context.h"
#include "crow/http_request.h"
#include "crow/http_server.h"
#ifdef CROW_MSVC_WORKAROUND
#define CROW_ROUTE(app, url) app.route_dynamic(url)
#else
#define CROW_ROUTE(app, url) app.route<crow::black_magic::get_parameter_tag(url)>(url)
#endif
namespace crow
{
#ifdef CROW_ENABLE_SSL
using ssl_context_t = boost::asio::ssl::context;
#endif
template <typename ... Middlewares>
class Crow
{
public:
using self_t = Crow;
using server_t = Server<Crow, SocketAdaptor, Middlewares...>;
#ifdef CROW_ENABLE_SSL
using ssl_server_t = Server<Crow, SSLAdaptor, Middlewares...>;
#endif
Crow()
{
}
template <typename Adaptor>
void handle_upgrade(const request& req, response& res, Adaptor&& adaptor)
{
router_.handle_upgrade(req, res, adaptor);
}
void handle(const request& req, response& res)
{
router_.handle(req, res);
}
DynamicRule& route_dynamic(std::string&& rule)
{
return router_.new_rule_dynamic(std::move(rule));
}
template <uint64_t Tag>
auto route(std::string&& rule)
-> typename std::result_of<decltype(&Router::new_rule_tagged<Tag>)(Router, std::string&&)>::type
{
return router_.new_rule_tagged<Tag>(std::move(rule));
}
self_t& port(std::uint16_t port)
{
port_ = port;
return *this;
}
self_t& bindaddr(std::string bindaddr)
{
bindaddr_ = bindaddr;
return *this;
}
self_t& multithreaded()
{
return concurrency(std::thread::hardware_concurrency());
}
self_t& concurrency(std::uint16_t concurrency)
{
if (concurrency < 1)
concurrency = 1;
concurrency_ = concurrency;
return *this;
}
void validate()
{
router_.validate();
}
void run()
{
validate();
#ifdef CROW_ENABLE_SSL
if (use_ssl_)
{
ssl_server_ = std::move(std::unique_ptr<ssl_server_t>(new ssl_server_t(this, bindaddr_, port_, &middlewares_, concurrency_, &ssl_context_)));
ssl_server_->set_tick_function(tick_interval_, tick_function_);
ssl_server_->run();
}
else
#endif
{
server_ = std::move(std::unique_ptr<server_t>(new server_t(this, bindaddr_, port_, &middlewares_, concurrency_, nullptr)));
server_->set_tick_function(tick_interval_, tick_function_);
server_->run();
}
}
void stop()
{
#ifdef CROW_ENABLE_SSL
if (use_ssl_)
{
ssl_server_->stop();
}
else
#endif
{
server_->stop();
}
}
void debug_print()
{
CROW_LOG_DEBUG << "Routing:";
router_.debug_print();
}
self_t& loglevel(crow::LogLevel level)
{
crow::logger::setLogLevel(level);
return *this;
}
#ifdef CROW_ENABLE_SSL
self_t& ssl_file(const std::string& crt_filename, const std::string& key_filename)
{
use_ssl_ = true;
ssl_context_.set_verify_mode(boost::asio::ssl::verify_peer);
ssl_context_.use_certificate_file(crt_filename, ssl_context_t::pem);
ssl_context_.use_private_key_file(key_filename, ssl_context_t::pem);
ssl_context_.set_options(
boost::asio::ssl::context::default_workarounds
| boost::asio::ssl::context::no_sslv2
| boost::asio::ssl::context::no_sslv3
);
return *this;
}
self_t& ssl_file(const std::string& pem_filename)
{
use_ssl_ = true;
ssl_context_.set_verify_mode(boost::asio::ssl::verify_peer);
ssl_context_.load_verify_file(pem_filename);
ssl_context_.set_options(
boost::asio::ssl::context::default_workarounds
| boost::asio::ssl::context::no_sslv2
| boost::asio::ssl::context::no_sslv3
);
return *this;
}
self_t& ssl(boost::asio::ssl::context&& ctx)
{
use_ssl_ = true;
ssl_context_ = std::move(ctx);
return *this;
}
bool use_ssl_{false};
ssl_context_t ssl_context_{boost::asio::ssl::context::sslv23};
#else
template <typename T, typename ... Remain>
self_t& ssl_file(T&&, Remain&&...)
{
// We can't call .ssl() member function unless CROW_ENABLE_SSL is defined.
static_assert(
// make static_assert dependent to T; always false
std::is_base_of<T, void>::value,
"Define CROW_ENABLE_SSL to enable ssl support.");
return *this;
}
template <typename T>
self_t& ssl(T&&)
{
// We can't call .ssl() member function unless CROW_ENABLE_SSL is defined.
static_assert(
// make static_assert dependent to T; always false
std::is_base_of<T, void>::value,
"Define CROW_ENABLE_SSL to enable ssl support.");
return *this;
}
#endif
// middleware
using context_t = detail::context<Middlewares...>;
template <typename T>
typename T::context& get_context(const request& req)
{
static_assert(black_magic::contains<T, Middlewares...>::value, "App doesn't have the specified middleware type.");
auto& ctx = *reinterpret_cast<context_t*>(req.middleware_context);
return ctx.template get<T>();
}
template <typename T>
T& get_middleware()
{
return utility::get_element_by_type<T, Middlewares...>(middlewares_);
}
template <typename Duration, typename Func>
self_t& tick(Duration d, Func f) {
tick_interval_ = std::chrono::duration_cast<std::chrono::milliseconds>(d);
tick_function_ = f;
return *this;
}
private:
uint16_t port_ = 80;
uint16_t concurrency_ = 1;
std::string bindaddr_ = "0.0.0.0";
Router router_;
std::chrono::milliseconds tick_interval_;
std::function<void()> tick_function_;
std::tuple<Middlewares...> middlewares_;
#ifdef CROW_ENABLE_SSL
std::unique_ptr<ssl_server_t> ssl_server_;
#endif
std::unique_ptr<server_t> server_;
};
template <typename ... Middlewares>
using App = Crow<Middlewares...>;
using SimpleApp = Crow<>;
}
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