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/**
* @file
* @author 2012-2014 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/debug/DebuggerServlet.h"
#include "uscxml/debug/DebugSession.h"
#include "uscxml/util/UUID.h"
#include <xercesc/dom/DOMDocument.hpp>
#include <boost/algorithm/string.hpp>
namespace uscxml {
void DebuggerServlet::pushData(std::shared_ptr<DebugSession> session, Data pushData) {
LOGD(USCXML_DEBUG) << "trying to push " << pushData.at("replyType").atom << std::endl;
if (!session) {
if (_sendQueues.size() > 0) // logging is not aware of its interpreter
_sendQueues.begin()->second.push(pushData);
} else {
_sendQueues[session].push(pushData);
}
serverPushData(session);
}
void DebuggerServlet::serverPushData(std::shared_ptr<DebugSession> session) {
if (_sendQueues[session].isEmpty())
return;
if (!_clientConns[session])
return;
Data reply = _sendQueues[session].pop();
LOGD(USCXML_DEBUG) << "pushing " << reply.at("replyType").atom << std::endl;
returnData(_clientConns[session], reply);
_clientConns[session] = HTTPServer::Request();
}
void DebuggerServlet::returnData(const HTTPServer::Request& request, Data replyData) {
HTTPServer::Reply reply(request);
if (!replyData.hasKey("status")) {
replyData.compound["status"] = Data("success", Data::VERBATIM);
}
LOGD(USCXML_DEBUG) << "<- " << replyData << std::endl;
reply.content = Data::toJSON(replyData);
reply.headers["Access-Control-Allow-Origin"] = "*";
reply.headers["Content-Type"] = "application/json";
HTTPServer::reply(reply);
}
bool DebuggerServlet::isCORS(const HTTPServer::Request& request) {
return (request.data.at("type").atom == "options" &&
request.data.at("header").hasKey("Origin") &&
request.data.at("header").hasKey("Access-Control-Request-Method"));
}
void DebuggerServlet::handleCORS(const HTTPServer::Request& request) {
HTTPServer::Reply corsReply(request);
if (request.data.at("header").hasKey("Origin")) {
corsReply.headers["Access-Control-Allow-Origin"] = request.data.at("header").at("Origin").atom;
} else {
corsReply.headers["Access-Control-Allow-Origin"] = "*";
}
if (request.data.at("header").hasKey("Access-Control-Request-Method"))
corsReply.headers["Access-Control-Allow-Methods"] = request.data.at("header").at("Access-Control-Request-Method").atom;
if (request.data.at("header").hasKey("Access-Control-Request-Headers"))
corsReply.headers["Access-Control-Allow-Headers"] = request.data.at("header").at("Access-Control-Request-Headers").atom;
// std::cout << "CORS!" << std::endl << request << std::endl;
HTTPServer::reply(corsReply);
}
bool DebuggerServlet::requestFromHTTP(const HTTPServer::Request& request) {
if (!request.data.hasKey("path"))
return false; // returnError(request);
if (isCORS(request)) {
handleCORS(request);
return true;
}
LOGD(USCXML_DEBUG) << request.data["path"] << ": " << request.data["content"] << std::endl;
Data replyData;
// process request that don't need a session
if (false) {
} else if (boost::istarts_with(request.data.at("path").atom, "/debug/connect")) {
processConnect(request);
return true;
} else if (boost::starts_with(request.data.at("path").atom, "/debug/sessions")) {
processListSessions(request);
return true;
}
// get session or return error
if (false) {
} else if (!request.data.at("content").hasKey("session")) {
replyData.compound["status"] = Data("failure", Data::VERBATIM);
replyData.compound["reason"] = Data("No session given", Data::VERBATIM);
} else if (_sessionForId.find(request.data.at("content").at("session").atom) == _sessionForId.end()) {
replyData.compound["status"] = Data("failure", Data::VERBATIM);
replyData.compound["reason"] = Data("No such session", Data::VERBATIM);
}
if (!replyData.empty()) {
returnData(request, replyData);
return true;
}
std::shared_ptr<DebugSession> session = _sessionForId[request.data.at("content").at("session").atom];
if (false) {
} else if (boost::starts_with(request.data.at("path").atom, "/debug/poll")) {
// save long-standing client poll
_clientConns[session] = request;
serverPushData(session);
} else if (boost::starts_with(request.data.at("path").atom, "/debug/disconnect")) {
processDisconnect(request);
} else if (boost::starts_with(request.data.at("path").atom, "/debug/issues")) {
replyData = session->getIssues();
} else if (boost::starts_with(request.data.at("path").atom, "/debug/breakpoint/enable/all")) {
replyData = session->enableAllBreakPoints();
} else if (boost::starts_with(request.data.at("path").atom, "/debug/breakpoint/disable/all")) {
replyData = session->disableAllBreakPoints();
} else if (boost::starts_with(request.data.at("path").atom, "/debug/breakpoint/skipto")) {
replyData = session->skipToBreakPoint(request.data["content"]);
} else if (boost::starts_with(request.data.at("path").atom, "/debug/breakpoint/add")) {
replyData = session->addBreakPoint(request.data["content"]);
} else if (boost::starts_with(request.data.at("path").atom, "/debug/breakpoint/remove")) {
replyData = session->removeBreakPoint(request.data["content"]);
} else if (boost::starts_with(request.data.at("path").atom, "/debug/breakpoint/enable")) {
replyData = session->enableBreakPoint(request.data["content"]);
} else if (boost::starts_with(request.data.at("path").atom, "/debug/breakpoint/disable")) {
replyData = session->disableBreakPoint(request.data["content"]);
} else if (boost::starts_with(request.data.at("path").atom, "/debug/stop")) {
replyData = session->debugStop(request.data["content"]);
} else if (boost::starts_with(request.data.at("path").atom, "/debug/prepare")) {
replyData = session->debugPrepare(request.data["content"]);
} else if (boost::starts_with(request.data.at("path").atom, "/debug/attach")) {
replyData = session->debugAttach(request.data["content"]);
} else if (boost::starts_with(request.data.at("path").atom, "/debug/start")) {
replyData = session->debugStart(request.data["content"]);
} else if (boost::starts_with(request.data.at("path").atom, "/debug/step")) {
replyData = session->debugStep(request.data["content"]);
} else if (boost::starts_with(request.data.at("path").atom, "/debug/pause")) {
replyData = session->debugPause(request.data["content"]);
} else if (boost::starts_with(request.data.at("path").atom, "/debug/resume")) {
replyData = session->debugResume(request.data["content"]);
} else if (boost::starts_with(request.data.at("path").atom, "/debug/eval")) {
replyData = session->debugEval(request.data["content"]);
}
if (!replyData.empty()) {
returnData(request, replyData);
return true;
}
return true;
}
// someone connected, create a new session
void DebuggerServlet::processConnect(const HTTPServer::Request& request) {
std::lock_guard<std::recursive_mutex> lock(_mutex);
std::string sessionId = UUID::getUUID();
_sessionForId[sessionId] = std::shared_ptr<DebugSession>(new DebugSession());
_sessionForId[sessionId]->setDebugger(this);
Data replyData;
replyData.compound["session"] = Data(sessionId, Data::VERBATIM);
replyData.compound["status"] = Data("success", Data::VERBATIM);
returnData(request, replyData);
}
void DebuggerServlet::processDisconnect(const HTTPServer::Request& request) {
std::lock_guard<std::recursive_mutex> lock(_mutex);
Data replyData;
if (!request.data.at("content").hasKey("session")) {
replyData.compound["status"] = Data("failure", Data::VERBATIM);
replyData.compound["reason"] = Data("No session given", Data::VERBATIM);
returnData(request, replyData);
}
std::string sessionId = request.data.at("content").at("session").atom;
if (_sessionForId.find(sessionId) == _sessionForId.end()) {
replyData.compound["status"] = Data("failure", Data::VERBATIM);
replyData.compound["reason"] = Data("No such session", Data::VERBATIM);
} else {
replyData.compound["status"] = Data("success", Data::VERBATIM);
detachSession(sessionId);
_sessionForId[sessionId]->debugStop(request.data["content"]);
_clientConns.erase(_sessionForId[sessionId]);
_sendQueues.erase(_sessionForId[sessionId]);
_sessionForId.erase(sessionId);
}
returnData(request, replyData);
}
void DebuggerServlet::processListSessions(const HTTPServer::Request& request) {
Data replyData;
std::map<std::string, std::weak_ptr<InterpreterImpl> > instances = InterpreterImpl::getInstances();
for (auto weakInstance : instances) {
std::shared_ptr<InterpreterImpl> instance = weakInstance.second.lock();
if (instance) {
Data sessionData;
sessionData.compound["name"] = Data(instance->getName(), Data::VERBATIM);
sessionData.compound["id"] = Data(instance->getSessionId(), Data::VERBATIM);
sessionData.compound["source"] = Data(instance->getBaseURL(), Data::VERBATIM);
sessionData.compound["xml"].node = instance->getDocument();
replyData.compound["sessions"].array.push_back(sessionData);
}
}
replyData.compound["status"] = Data("success", Data::VERBATIM);
returnData(request, replyData);
}
/*
void DebuggerServlet::handle(const el::LogDispatchData* data) {
}
void DebuggerServlet::send(google::LogSeverity severity, const char* full_filename,
const char* base_filename, int line,
const struct ::tm* tm_time,
const char* message, size_t message_len) {
// _sendQueue is thread-safe, not sure about ToString though
LogMessage msg(severity,
full_filename,
base_filename,
line,
tm_time,
std::string(message, message_len),
ToString(severity, base_filename, line, tm_time, message, message_len));
msg.compound["replyType"] = Data("log", Data::VERBATIM);
pushData(std::shared_ptr<DebugSession>(), msg);
}
*/
}
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