i2pd/libi2pd_client/Websocket.cpp
2017-05-21 08:18:16 -04:00

196 lines
4.5 KiB
C++

#ifdef WITH_EVENTS
#include "Websocket.h"
#include "Log.h"
#include <set>
#include <functional>
#include <websocketpp/config/asio_no_tls.hpp>
#include <websocketpp/server.hpp>
#include <boost/property_tree/ini_parser.hpp>
#define GCC47_BOOST149 ((BOOST_VERSION == 104900) && (__GNUC__ == 4) && (__GNUC_MINOR__ >= 7))
#if !GCC47_BOOST149
#include <boost/property_tree/json_parser.hpp>
#endif
#include <stdexcept>
namespace i2p
{
namespace event
{
typedef websocketpp::server<websocketpp::config::asio> ServerImpl;
typedef websocketpp::connection_hdl ServerConn;
class WebsocketServerImpl : public EventListener
{
private:
typedef ServerImpl::message_ptr MessagePtr;
public:
WebsocketServerImpl(const std::string & addr, int port) :
m_run(false),
m_ws_thread(nullptr),
m_ev_thread(nullptr),
m_WebsocketTicker(m_Service)
{
m_server.init_asio();
m_server.set_open_handler(std::bind(&WebsocketServerImpl::ConnOpened, this, std::placeholders::_1));
m_server.set_close_handler(std::bind(&WebsocketServerImpl::ConnClosed, this, std::placeholders::_1));
m_server.set_message_handler(std::bind(&WebsocketServerImpl::OnConnMessage, this, std::placeholders::_1, std::placeholders::_2));
m_server.listen(boost::asio::ip::address::from_string(addr), port);
}
~WebsocketServerImpl()
{
}
void Start() {
m_run = true;
m_server.start_accept();
m_ws_thread = new std::thread([&] () {
while(m_run) {
try {
m_server.run();
} catch (std::exception & e ) {
LogPrint(eLogError, "Websocket server: ", e.what());
}
}
});
m_ev_thread = new std::thread([&] () {
while(m_run) {
try {
m_Service.run();
break;
} catch (std::exception & e ) {
LogPrint(eLogError, "Websocket service: ", e.what());
}
}
});
ScheduleTick();
}
void Stop() {
m_run = false;
m_Service.stop();
m_server.stop();
if(m_ev_thread) {
m_ev_thread->join();
delete m_ev_thread;
}
m_ev_thread = nullptr;
if(m_ws_thread) {
m_ws_thread->join();
delete m_ws_thread;
}
m_ws_thread = nullptr;
}
void ConnOpened(ServerConn c)
{
std::lock_guard<std::mutex> lock(m_connsMutex);
m_conns.insert(c);
}
void ConnClosed(ServerConn c)
{
std::lock_guard<std::mutex> lock(m_connsMutex);
m_conns.erase(c);
}
void OnConnMessage(ServerConn conn, ServerImpl::message_ptr msg)
{
(void) conn;
(void) msg;
}
void HandleTick(const boost::system::error_code & ec)
{
if(ec != boost::asio::error::operation_aborted)
LogPrint(eLogError, "Websocket ticker: ", ec.message());
// pump collected events to us
i2p::event::core.PumpCollected(this);
ScheduleTick();
}
void ScheduleTick()
{
LogPrint(eLogDebug, "Websocket schedule tick");
boost::posix_time::seconds dlt(1);
m_WebsocketTicker.expires_from_now(dlt);
m_WebsocketTicker.async_wait(std::bind(&WebsocketServerImpl::HandleTick, this, std::placeholders::_1));
}
/** @brief called from m_ev_thread */
void HandlePumpEvent(const EventType & ev, const uint64_t & val)
{
EventType e;
for (const auto & i : ev)
e[i.first] = i.second;
e["number"] = std::to_string(val);
HandleEvent(e);
}
/** @brief called from m_ws_thread */
void HandleEvent(const EventType & ev)
{
std::lock_guard<std::mutex> lock(m_connsMutex);
boost::property_tree::ptree event;
for (const auto & item : ev) {
event.put(item.first, item.second);
}
std::ostringstream ss;
write_json(ss, event);
std::string s = ss.str();
ConnList::iterator it;
for (it = m_conns.begin(); it != m_conns.end(); ++it) {
ServerImpl::connection_ptr con = m_server.get_con_from_hdl(*it);
con->send(s);
}
}
private:
typedef std::set<ServerConn, std::owner_less<ServerConn> > ConnList;
bool m_run;
std::thread * m_ws_thread;
std::thread * m_ev_thread;
std::mutex m_connsMutex;
ConnList m_conns;
ServerImpl m_server;
boost::asio::io_service m_Service;
boost::asio::deadline_timer m_WebsocketTicker;
};
WebsocketServer::WebsocketServer(const std::string & addr, int port) : m_impl(new WebsocketServerImpl(addr, port)) {}
WebsocketServer::~WebsocketServer()
{
delete m_impl;
}
void WebsocketServer::Start()
{
m_impl->Start();
}
void WebsocketServer::Stop()
{
m_impl->Stop();
}
EventListener * WebsocketServer::ToListener()
{
return m_impl;
}
}
}
#endif