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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/UUID.h"
#include <boost/algorithm/string.hpp>
namespace uscxml {
void DebuggerServlet::pushData(Data pushData) {
std::cout << "trying to push " << pushData["replyType"].atom << std::endl;
_sendQueue.push(pushData);
serverPushData();
}
void DebuggerServlet::serverPushData() {
tthread::lock_guard<tthread::recursive_mutex> lock(_mutex);
if (_sendQueue.isEmpty())
return;
if (!_clientConn)
return;
Data reply = _sendQueue.pop();
std::cout << "pushing " << reply["replyType"].atom << std::endl;
returnData(_clientConn, reply);
_clientConn = 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);
}
reply.content = Data::toJSON(replyData);
reply.headers["Access-Control-Allow-Origin"] = "*";
reply.headers["Content-Type"] = "application/json";
HTTPServer::reply(reply);
}
void DebuggerServlet::hitBreakpoint(const Interpreter& interpreter,
Data data) {
tthread::lock_guard<tthread::recursive_mutex> lock(_mutex);
data.compound["replyType"] = Data("breakpoint", Data::VERBATIM);
pushData(data);
_resumeCond.wait(_mutex);
tthread::this_thread::sleep_for(tthread::chrono::milliseconds(200));
}
bool DebuggerServlet::isCORS(const HTTPServer::Request& request) {
return (request.data["type"].atom == "options" &&
request.data["header"].hasKey("Origin") &&
request.data["header"].hasKey("Access-Control-Request-Method"));
}
void DebuggerServlet::handleCORS(const HTTPServer::Request& request) {
HTTPServer::Reply corsReply(request);
if (request.data["header"].hasKey("Origin")) {
corsReply.headers["Access-Control-Allow-Origin"] = request.data["header"]["Origin"].atom;
} else {
corsReply.headers["Access-Control-Allow-Origin"] = "*";
}
if (request.data["header"].hasKey("Access-Control-Request-Method"))
corsReply.headers["Access-Control-Allow-Methods"] = request.data["header"]["Access-Control-Request-Method"].atom;
if (request.data["header"].hasKey("Access-Control-Request-Headers"))
corsReply.headers["Access-Control-Allow-Headers"] = request.data["header"]["Access-Control-Request-Headers"].atom;
// std::cout << "CORS!" << std::endl << request << std::endl;
HTTPServer::reply(corsReply);
}
bool DebuggerServlet::httpRecvRequest(const HTTPServer::Request& request) {
if (!request.data.hasKey("path"))
return false; // returnError(request);
if (isCORS(request)) {
handleCORS(request);
return true;
}
std::cout << request.data["path"] << ": " << request.data["content"] << std::endl;
if (false) {
} else if (boost::starts_with(request.data["path"].atom, "/poll")) {
processPoll(request);
} else if (boost::starts_with(request.data["path"].atom, "/connect")) {
processConnect(request);
} else if (boost::starts_with(request.data["path"].atom, "/disconnect")) {
processDisconnect(request);
} else if (boost::starts_with(request.data["path"].atom, "/sessions")) {
processListSessions(request);
} else if (boost::starts_with(request.data["path"].atom, "/breakpoint/add")) {
processAddBreakPoint(request);
} else if (boost::starts_with(request.data["path"].atom, "/breakpoint/remove")) {
processRemoveBreakPoint(request);
} else if (boost::starts_with(request.data["path"].atom, "/debug/prepare")) {
processDebugPrepare(request);
} else if (boost::starts_with(request.data["path"].atom, "/debug/start")) {
processDebugStart(request);
} else if (boost::starts_with(request.data["path"].atom, "/debug/stop")) {
processDebugStop(request);
} else if (boost::starts_with(request.data["path"].atom, "/debug/step")) {
processDebugStep(request);
} else if (boost::starts_with(request.data["path"].atom, "/debug/pause")) {
processDebugPause(request);
} else if (boost::starts_with(request.data["path"].atom, "/debug/resume")) {
processDebugResume(request);
} else if (boost::starts_with(request.data["path"].atom, "/debug/eval")) {
processDebugEval(request);
}
return true;
}
void DebuggerServlet::processPoll(const HTTPServer::Request& request) {
tthread::lock_guard<tthread::recursive_mutex> lock(_mutex);
_clientConn = request;
serverPushData();
}
void DebuggerServlet::processDebugPrepare(const HTTPServer::Request& request) {
tthread::lock_guard<tthread::recursive_mutex> lock(_mutex);
// std::cout << "clearing all pushes" << std::endl;
// _sendQueue.clear();
// this will call the destructor if _interpreter already is set
_resumeCond.notify_all();
_interpreter = Interpreter::fromXML(request.data["content"].atom);
Data replyData;
if (_interpreter) {
// register ourself as a monitor
_interpreter.addMonitor(this);
replyData.compound["status"] = Data("success", Data::VERBATIM);
} else {
replyData.compound["status"] = Data("failure", Data::VERBATIM);
}
returnData(request, replyData);
}
void DebuggerServlet::processDebugStart(const HTTPServer::Request& request) {
tthread::lock_guard<tthread::recursive_mutex> lock(_mutex);
Data replyData;
if (_interpreter) {
// register ourself as a monitor
_interpreter.start();
replyData.compound["status"] = Data("success", Data::VERBATIM);
} else {
replyData.compound["status"] = Data("failure", Data::VERBATIM);
}
returnData(request, replyData);
}
void DebuggerServlet::processDebugStop(const HTTPServer::Request& request) {
// tthread::lock_guard<tthread::recursive_mutex> lock(_mutex);
stepping(false);
Data replyData;
if (_interpreter) {
_interpreter.stop();
_resumeCond.notify_all(); // unblock breakpoints
_interpreter.join();
_interpreter = Interpreter(); // empty interpreter, calls destructor
replyData.compound["status"] = Data("success", Data::VERBATIM);
} else {
replyData.compound["status"] = Data("failure", Data::VERBATIM);
replyData.compound["reason"] = Data("Interpreter already stopped", Data::VERBATIM);
}
returnData(request, replyData);
}
void DebuggerServlet::processDebugEval(const HTTPServer::Request& request) {
Data replyData;
if (!_interpreter) {
replyData.compound["status"] = Data("failure", Data::VERBATIM);
replyData.compound["reason"] = Data("No interpreter running", Data::VERBATIM);
} else if (!_interpreter.getDataModel()) {
replyData.compound["status"] = Data("failure", Data::VERBATIM);
replyData.compound["reason"] = Data("No datamodel available", Data::VERBATIM);
} else if (!request.data["content"].hasKey("expression")) {
replyData.compound["status"] = Data("failure", Data::VERBATIM);
replyData.compound["reason"] = Data("No expression given", Data::VERBATIM);
} else {
std::string expr = request.data["content"]["expression"].atom;
try {
replyData.compound["eval"] = _interpreter.getDataModel().getStringAsData(expr);
} catch (Event e) {
replyData.compound["eval"] = e.data;
replyData.compound["eval"].compound["error"] = Data(e.name, Data::VERBATIM);
}
replyData.compound["status"] = Data("success", Data::VERBATIM);
}
returnData(request, replyData);
}
void DebuggerServlet::processDebugStep(const HTTPServer::Request& request) {
tthread::lock_guard<tthread::recursive_mutex> lock(_mutex);
stepping(true);
_resumeCond.notify_one();
Data replyData;
if (_interpreter && !_interpreter.isRunning()) {
// register ourself as a monitor
_interpreter.start();
replyData.compound["status"] = Data("success", Data::VERBATIM);
} else {
replyData.compound["status"] = Data("failure", Data::VERBATIM);
}
returnData(request, replyData);
}
void DebuggerServlet::processDebugResume(const HTTPServer::Request& request) {
tthread::lock_guard<tthread::recursive_mutex> lock(_mutex);
stepping(false);
Data replyData;
replyData.compound["status"] = Data("success", Data::VERBATIM);
returnData(request, replyData);
_resumeCond.notify_one();
}
void DebuggerServlet::processDebugPause(const HTTPServer::Request& request) {
tthread::lock_guard<tthread::recursive_mutex> lock(_mutex);
Data replyData;
replyData.compound["status"] = Data("success", Data::VERBATIM);
returnData(request, replyData);
}
void DebuggerServlet::processConnect(const HTTPServer::Request& request) {
tthread::lock_guard<tthread::recursive_mutex> lock(_mutex);
_sessionId = UUID::getUUID();
_breakPoints.clear();
// _sendQueue.clear();
Data replyData;
replyData.compound["session"] = Data(_sessionId, Data::VERBATIM);
replyData.compound["status"] = Data("success", Data::VERBATIM);
returnData(request, replyData);
}
void DebuggerServlet::processListSessions(const HTTPServer::Request& request) {
Data replyData;
// TODO: return actual data
Data sessionData;
sessionData.compound["name"] = Data("Not actually a Session", Data::VERBATIM);
sessionData.compound["id"] = Data("23452523-wg23g2g2-234t2g-23g2g", Data::VERBATIM);
replyData.compound["sessions"].array.push_back(sessionData);
sessionData.compound["name"] = Data("But returned from the server!", Data::VERBATIM);
sessionData.compound["id"] = Data("swfgsgfw-g232vqvq-234t2g-23g2g", Data::VERBATIM);
replyData.compound["sessions"].array.push_back(sessionData);
replyData.compound["status"] = Data("success", Data::VERBATIM);
returnData(request, replyData);
}
void DebuggerServlet::processDisconnect(const HTTPServer::Request& request) {
Data replyData;
replyData.compound["status"] = Data("success", Data::VERBATIM);
returnData(request, replyData);
}
void DebuggerServlet::processAddBreakPoint(const HTTPServer::Request& request) {
Breakpoint breakPoint(request.data["content"]);
Data replyData;
if (breakPoint.isValid()) {
replyData.compound["status"] = Data("success", Data::VERBATIM);
if (_breakPoints.find(breakPoint) == _breakPoints.end()) {
_breakPoints.insert(breakPoint);
}
} else {
replyData.compound["status"] = Data("failure", Data::VERBATIM);
}
returnData(request, replyData);
}
void DebuggerServlet::processRemoveBreakPoint(const HTTPServer::Request& request) {
Breakpoint breakPoint(request.data["content"]);
Data replyData;
if (_breakPoints.erase(breakPoint) > 0) {
replyData.compound["status"] = Data("success", Data::VERBATIM);
} else {
replyData.compound["message"] = Data("No such breakpoint", Data::VERBATIM);
replyData.compound["status"] = Data("failure", Data::VERBATIM);
}
returnData(request, replyData);
}
}
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