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/**
* @file
* @author 2012-2013 Stefan Radomski (stefan.radomski@cs.tu-darmstadt.de)
* @copyright Simplified BSD
*
* @cond
* This program is free software: you can redistribute it and/or modify
* it under the terms of the FreeBSD license as published by the FreeBSD
* project.
*
* 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.
*
* You should have received a copy of the FreeBSD license along with this
* program. If not, see <http://www.opensource.org/licenses/bsd-license>.
* @endcond
*/
#include <uscxml/Common.h>
#include "uscxml/plugins/ioprocessor/comet/CometIOProcessor.h"
#include "uscxml/Message.h"
#include <iostream>
#include <string.h>
#ifdef BUILD_AS_PLUGINS
#include <Pluma/Connector.hpp>
#endif
namespace uscxml {
#ifdef BUILD_AS_PLUGINS
PLUMA_CONNECTOR
bool pluginConnect(pluma::Host& host) {
host.add( new CometIOProcessorProvider() );
return true;
}
#endif
CometIOProcessor::CometIOProcessor() {
}
CometIOProcessor::~CometIOProcessor() {
}
boost::shared_ptr<IOProcessorImpl> CometIOProcessor::create(InterpreterImpl* interpreter) {
boost::shared_ptr<CometIOProcessor> io = boost::shared_ptr<CometIOProcessor>(new CometIOProcessor());
io->_interpreter = interpreter;
// register at http server
std::string path = interpreter->getName();
int i = 2;
while (!HTTPServer::registerServlet(path + "/comet", io.get())) {
std::stringstream ss;
ss << interpreter->getName() << i++;
path = ss.str();
}
return io;
}
Data CometIOProcessor::getDataModelVariables() {
Data data;
return data;
}
void CometIOProcessor::send(const SendRequest& req) {
tthread::lock_guard<tthread::recursive_mutex> lock(_mutex);
if (!_longPollingReq) {
_outQueue.push_back(req);
return;
}
reply(req, _longPollingReq);
}
void CometIOProcessor::reply(const SendRequest& req, const HTTPServer::Request& longPoll) {
HTTPServer::Reply reply(longPoll);
if (req.dom) {
std::stringstream ss;
ss << req.dom;
reply.content = ss.str();
reply.headers["Content-Type"] = "application/xml";
} else if (req.data) {
reply.content = Data::toJSON(req.data);
reply.headers["Content-Type"] = "application/json";
} else if (req.content.length() > 0) {
reply.content = req.content;
reply.headers["Content-Type"] = "text/plain";
}
if (req.params.find("Content-Type") != req.params.end())
reply.headers["Content-Type"] = req.params.find("Content-Type")->first;
HTTPServer::reply(reply);
}
bool CometIOProcessor::httpRecvRequest(const HTTPServer::Request& request) {
tthread::lock_guard<tthread::recursive_mutex> lock(_mutex);
if (_longPollingReq)
// send 204 to last request and remember new one
evhttp_send_error(_longPollingReq.evhttpReq, 204, NULL);
_longPollingReq = request;
if (!_outQueue.empty()) {
send(_outQueue.front());
_outQueue.pop_front();
}
return true;
}
}
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