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/*
* RequestManager.cpp
*
* Copyright (C) 2008 Matthias Schiffer <matthias@gamezock.de>
*
* This program is free software: you can redistribute it and/or modify it
* under the terms of the GNU General Public License as published by the
* Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
* See the GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License along
* with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include "RequestManager.h"
#include "RequestHandlers/DisconnectRequestHandler.h"
#include <boost/bind.hpp>
namespace Mad {
namespace Common {
void RequestManager::RequestMap::unregisterConnection(Connection *connection) {
std::map<Connection*, IdMap>::iterator idMap = connectionMap.find(connection);
if(idMap == connectionMap.end())
return;
for(IdMap::iterator request = idMap->second.begin(); request != idMap->second.end(); ++request)
handlerMap.erase(request->second.get());
connectionMap.erase(idMap);
}
bool RequestManager::RequestMap::addRequest(Connection *con, boost::uint16_t id, boost::shared_ptr<RequestHandler> request) {
std::map<Connection*, IdMap>::iterator idMap = connectionMap.find(con);
if(idMap == connectionMap.end())
return false;
if(!idMap->second.insert(std::make_pair(id, request)).second)
return false;
if(!handlerMap.insert(std::make_pair(request.get(), std::make_pair(con, id))).second) {
idMap->second.erase(id);
return false;
}
return true;
}
boost::shared_ptr<RequestHandler> RequestManager::RequestMap::findRequest(Connection *con, boost::uint16_t id) {
std::map<Connection*, IdMap>::iterator idMap = connectionMap.find(con);
if(idMap == connectionMap.end())
return boost::shared_ptr<RequestHandler>();
IdMap::iterator it = idMap->second.find(id);
if(it == idMap->second.end())
return boost::shared_ptr<RequestHandler>();
return it->second;
}
void RequestManager::RequestMap::deleteRequest(Connection *con, boost::uint16_t id) {
std::map<Connection*, IdMap>::iterator idMap = connectionMap.find(con);
if(idMap == connectionMap.end())
return;
IdMap::iterator it = idMap->second.find(id);
if(it == idMap->second.end())
return;
handlerMap.erase(it->second.get());
idMap->second.erase(it);
}
std::pair<Connection*, boost::uint16_t> RequestManager::RequestMap::getRequestInfo(const RequestHandler *requestHandler) {
HandlerMap::iterator it = handlerMap.find(requestHandler);
if(it == handlerMap.end())
return std::pair<Connection*, boost::uint16_t>(0, 0);
else
return it->second;
}
void RequestManager::receiveHandler(Connection *connection, boost::shared_ptr<const XmlPacket> packet, boost::uint16_t requestId) {
boost::upgrade_lock<boost::shared_mutex> lock(mutex);
boost::shared_ptr<RequestHandler> request = requestMap.findRequest(connection, requestId);
if(request) {
lock.unlock();
application->getThreadManager()->pushWork(boost::bind(&RequestHandler::handlePacket, request, packet));
return;
}
if(!requestMap.isConnectionRegistered(connection)) {
// TODO: Error
application->log(Core::LoggerBase::ERROR, "Received a packet from an unregistered connection.");
return;
}
std::map<std::string, boost::shared_ptr<RequestHandlerGroup> >::iterator rgh = requestHandlerGroups.find(packet->getType());
if(rgh != requestHandlerGroups.end()) {
request = rgh->second->createRequestHandler(application, packet->getType());
if(request) {
{
boost::upgrade_to_unique_lock<boost::shared_mutex> upgradeLock(lock);
requestMap.addRequest(connection, requestId, request);
request->connectSignalFinished(boost::bind(&RequestManager::handleRequestFinished, this, connection, requestId));
}
lock.unlock();
application->getThreadManager()->pushWork(boost::bind(&RequestHandler::handlePacket, request, packet));
return;
}
}
lock.unlock();
application->logf(Core::LoggerBase::ERROR, "Received an unexpected packet with type '%s'.", packet->getType().c_str());
XmlPacket ret;
ret.setType("Error");
ret.set("ErrorCode", Core::Exception::UNEXPECTED_PACKET);
connection->sendPacket(ret, requestId);
}
bool RequestManager::sendRequest(Connection *connection, boost::shared_ptr<Request> request) {
boost::unique_lock<boost::shared_mutex> lock(mutex);
if(!requestMap.isConnectionRegistered(connection)) {
application->log(Core::LoggerBase::CRITICAL, "Trying to send a request over an unregistered connecion.");
return false;
}
uint16_t requestId = _getUnusedRequestId(connection);
if(request->isFinished || !requestMap.addRequest(connection, requestId, request)) {
application->log(Core::LoggerBase::CRITICAL, "Trying resend a request.");
return false;
}
request->connectSignalFinished(boost::bind(&RequestManager::handleRequestFinished, this, connection, requestId));
lock.unlock();
application->getThreadManager()->pushWork(boost::bind(&Request::sendRequest, request));
return true;
}
boost::uint16_t RequestManager::_getUnusedRequestId(Connection *connection) {
while(true) {
boost::uint16_t requestId = _getRequestId();
if(!requestMap.findRequest(connection, requestId))
return requestId;
}
}
void RequestManager::registerConnection(Connection *connection) {
boost::lock_guard<boost::shared_mutex> lock(mutex);
requestMap.registerConnection(connection);
connection->connectSignalReceive(boost::bind(&RequestManager::receiveHandler, this, connection, _1, _2));
}
RequestManager::RequestManager(Application *application0, bool server) : application(application0), lastRequestId(server ? 0 : -1) {
registerPacketType<RequestHandlers::DisconnectRequestHandler>("Disconnect");
}
}
}
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