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#include "MMISessionManager.h"
#include <uscxml/NameSpacingParser.h>
#include <uscxml/concurrency/tinythread.h>
#include <uscxml/UUID.h>
#include <io/uri.hpp>
#include <glog/logging.h>
namespace uscxml {
using namespace Arabica::DOM;
MMISessionManager::MMISessionManager(Interpreter interpreter) : _protoInterpreter(interpreter) {
bool success = HTTPServer::registerServlet(interpreter.getName(), this);
assert(success);
_factory = new Factory(Factory::getInstance());
_factory->registerIOProcessor(new MMIIOProcessor(this));
}
MMISessionManager::~MMISessionManager() {
HTTPServer* httpServer = HTTPServer::getInstance();
httpServer->unregisterServlet(this);
}
void MMISessionManager::setupHTMLClient(const HTTPServer::Request& req) {
// open template file
HTTPServer::Reply reply(req);
URL templateURL(_protoInterpreter.getBaseURI().asString() + "/templates/mc-html.html");
templateURL.download(true);
std::string templateContent = templateURL.getInContent();
boost::replace_all(templateContent, "${im.url}", _url);
reply.content = templateContent;
HTTPServer::reply(reply);
}
bool MMISessionManager::httpRecvRequest(const HTTPServer::Request& req) {
// is this an initial request from an HTML MC?
if (!req.data["query"]["token"] && // no token in query
!req.data["query"]["context"] && // no context in query
boost::iequals(req.data["type"].atom, "get") && // request type is GET
boost::icontains(req.data["header"]["Accept"].atom, "text/html") && // accepts html
req.content.length() == 0) { // no content
setupHTMLClient(req);
return true;
}
// is this a comet longpolling request?
if (boost::iequals(req.data["type"].atom, "get") &&
(req.data["query"]["token"] || req.data["query"]["context"])) {
std::string token = req.data["query"]["token"].atom;
if (req.data["query"]["token"]) {
std::string token = req.data["query"]["token"].atom;
if (_tokens.find(token) != _tokens.end()) {
MMISessionManager::CometMMISession* comet = static_cast<MMISessionManager::CometMMISession*>(_tokens[token]);
comet->longPoll(req);
return true;
} else {
LOG(ERROR) << "No session for given token";
}
} else if (req.data["query"]["context"]) {
std::string context = req.data["query"]["context"].atom;
if (_sessions.find(context) != _sessions.end()) {
MMISessionManager::CometMMISession* comet = static_cast<MMISessionManager::CometMMISession*>(_sessions[context]);
comet->longPoll(req);
return true;
} else {
LOG(ERROR) << "No session for given context";
}
}
}
// assume that there is an mmi event inside
Document<std::string> mmiDoc = NameSpacingParser::fromXML(req.data.compound.at("content").atom).getDocument();
if (!mmiDoc) {
evhttp_send_error(req.curlReq, 204, NULL);
return true;
}
Node<std::string> mmiEvent = MMIEvent::getEventNode(mmiDoc);
if (!mmiEvent) {
evhttp_send_error(req.curlReq, 204, NULL);
return true;
}
switch(MMIEvent::getType(mmiEvent)) {
case MMIEvent::NEWCONTEXTREQUEST: {
received(NewContextRequest::fromXML(mmiEvent), req.data["query"]["token"].atom);
evhttp_send_error(req.curlReq, 204, NULL);
break;
}
case MMIEvent::EXTENSIONNOTIFICATION: {
received(ExtensionNotification::fromXML(mmiEvent));
evhttp_send_error(req.curlReq, 204, NULL);
break;
}
case MMIEvent::DONENOTIFICATION: {
received(DoneNotification::fromXML(mmiEvent));
evhttp_send_error(req.curlReq, 204, NULL);
break;
}
case MMIEvent::STARTRESPONSE: {
evhttp_send_error(req.curlReq, 204, NULL);
break;
}
default: {
LOG(ERROR) << "Unknown MMI Event: " << ATTR(mmiEvent, "localName");
evhttp_send_error(req.curlReq, 204, NULL);
break;
}
}
return true;
}
void MMISessionManager::received(const ExtensionNotification& mmiEvent) {
if(_sessions.find(mmiEvent.context) != _sessions.end()) {
_sessions[mmiEvent.context]->_interpreter.receive(mmiEvent);
} else {
LOG(ERROR) << "No session for given context";
}
}
void MMISessionManager::received(const DoneNotification& mmiEvent) {
if(_sessions.find(mmiEvent.context) != _sessions.end()) {
_sessions[mmiEvent.context]->_interpreter.receive(mmiEvent);
} else {
LOG(ERROR) << "No session for given context";
}
}
void MMISessionManager::received(const NewContextRequest& mmiEvent, const std::string& token) {
// copy DOM from prototype instance
Arabica::DOM::DOMImplementation<std::string> domFactory = Arabica::SimpleDOM::DOMImplementation<std::string>::getDOMImplementation();
Arabica::DOM::Document<std::string> newDOM = domFactory.createDocument("", "", 0);
newDOM.appendChild(newDOM.importNode(_protoInterpreter.getDocument().getDocumentElement(), true));
// instantiate new interpreter and name it after the context
std::string contextId = UUID::getUUID();
Interpreter interpreter = Interpreter::fromDOM(newDOM);
interpreter.setFactory(_factory);
interpreter.setName(contextId);
interpreter.setNameSpaceInfo(_protoInterpreter.getNameSpaceInfo());
interpreter.setBaseURI(_protoInterpreter.getBaseURI().asString());
MMISession* session;
if (token.length() > 0) {
session = new MMISessionManager::CometMMISession();
static_cast<MMISessionManager::CometMMISession*>(session)->_token = token;
_tokens[token] = session;
} else {
// todo handle other cases
session = new MMISessionManager::CometMMISession();
}
session->_interpreter = interpreter;
// save interpreter
_sessions[contextId] = session;
interpreter.start();
interpreter.receive(mmiEvent);
}
void MMISessionManager::received(const NewContextResponse& mmiEvent, const std::string& token) {
if (_tokens.find(token) != _tokens.end()) {
_tokens.erase(token);
}
}
void MMISessionManager::send(const std::string& name, const SendRequest& req) {
assert(_sessions.find(name) != _sessions.end());
_sessions[name]->send(req);
}
void MMISessionManager::CometMMISession::send(const SendRequest& req) {
tthread::lock_guard<tthread::recursive_mutex> lock(_mutex);
if (!_longPollingReq) {
_outQueue.push_back(req);
return;
}
if (req.dom) {
std::stringstream ss;
Node<std::string> mmiEvent = MMIEvent::getEventNode(req.dom);
HTTPServer::Reply reply(_longPollingReq);
switch (MMIEvent::getType(mmiEvent)) {
case MMIEvent::NEWCONTEXTRESPONSE: {
NewContextResponse response = NewContextResponse::fromXML(mmiEvent);
ss << response.toXML();
reply.content = ss.str();
break;
}
case MMIEvent::STARTREQUEST: {
StartRequest request = StartRequest::fromXML(mmiEvent);
ss << request.toXML();
reply.content = ss.str();
break;
}
default:
break;
}
reply.headers["Content-Type"] = "application/xml";
HTTPServer::reply(reply);
_longPollingReq = HTTPServer::Request();
}
}
void MMISessionManager::CometMMISession::receive(const Arabica::DOM::Node<std::string>& msg) {
}
void MMISessionManager::CometMMISession::longPoll(const HTTPServer::Request& req) {
tthread::lock_guard<tthread::recursive_mutex> lock(_mutex);
if (_longPollingReq)
evhttp_send_error(_longPollingReq.curlReq, 204, NULL);
_longPollingReq = req;
if (!_outQueue.empty()) {
send(_outQueue.front());
_outQueue.pop_front();
}
}
boost::shared_ptr<IOProcessorImpl> MMISessionManager::MMIIOProcessor::create(InterpreterImpl* interpreter) {
boost::shared_ptr<IOProcessorImpl> ioProc = boost::shared_ptr<IOProcessorImpl>(new MMISessionManager::MMIIOProcessor(_sessionManager));
return ioProc;
}
Data MMISessionManager::MMIIOProcessor::getDataModelVariables() {
Data data;
return data;
}
void MMISessionManager::MMIIOProcessor::send(const SendRequest& req) {
SendRequest reqCopy(req);
if (req.dom) {
Arabica::DOM::Node<std::string> mmiEvent = MMIEvent::getEventNode(req.dom);
if (!mmiEvent || !mmiEvent.getNodeType() == Node_base::ELEMENT_NODE)
return;
Arabica::DOM::Element<std::string> mmiElem = Arabica::DOM::Element<std::string>(mmiEvent);
switch (MMIEvent::getType(mmiEvent)) {
case MMIEvent::STARTRESPONSE:
case MMIEvent::PREPARERESPONSE:
case MMIEvent::PAUSERESPONSE:
case MMIEvent::RESUMERESPONSE:
case MMIEvent::CANCELRESPONSE:
case MMIEvent::DONENOTIFICATION:
case MMIEvent::NEWCONTEXTRESPONSE:
case MMIEvent::CLEARCONTEXTRESPONSE:
case MMIEvent::STATUSRESPONSE: {
// all of the above have a status
if (!mmiElem.hasAttributeNS(MMIEvent::nameSpace, "Status")) {
mmiElem.setAttributeNS(MMIEvent::nameSpace, "Status", "Success");
}
}
case MMIEvent::PAUSEREQUEST:
case MMIEvent::RESUMEREQUEST:
case MMIEvent::CANCELREQUEST:
case MMIEvent::CLEARCONTEXTREQUEST:
case MMIEvent::STATUSREQUEST: {
// all of the above have a context
if (!mmiElem.hasAttributeNS(MMIEvent::nameSpace, "Context")) {
mmiElem.setAttributeNS(MMIEvent::nameSpace, "Context", _interpreter->getName());
}
}
default: {
if (!mmiElem.hasAttributeNS(MMIEvent::nameSpace, "Source")) {
mmiElem.setAttributeNS(MMIEvent::nameSpace, "Source", _sessionManager->getURL());
}
if (!mmiElem.hasAttributeNS(MMIEvent::nameSpace, "Target")) {
if (boost::starts_with(_interpreter->getCurrentEvent().name, "mmi.")) {
mmiElem.setAttributeNS(MMIEvent::nameSpace, "Target", _interpreter->getCurrentEvent().origin);
}
}
if (!mmiElem.hasAttributeNS(MMIEvent::nameSpace, "RequestID")) {
if (boost::starts_with(_interpreter->getCurrentEvent().name, "mmi.")) {
mmiElem.setAttributeNS(MMIEvent::nameSpace, "RequestID", _interpreter->getCurrentEvent().sendid);
}
}
}
}
if (MMIEvent::getType(mmiEvent) == MMIEvent::EXTENSIONNOTIFICATION && !mmiElem.hasAttribute("Name") && req.name.length() > 0) {
mmiElem.setAttribute("Name", req.name);
}
// use session mgr to dispatch to session
_sessionManager->send(_interpreter->getName(), reqCopy);
}
}
}
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