WebSVN – HomeAutomation – Diff – /trunk/PcSoftware/Atom/VM/virtualmachine.cpp


/***************************************************************************
 *   Copyright (C) December 10, 2008 by Mattias Runge                             *
 *   mattias@runge.se                                                      *
 *   virtualmachine.cpp                                            *
 *                                                                         *
 *   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 2 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, write to the                         *
 *   Free Software Foundation, Inc.,                                       *
 *   59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.             *
 ***************************************************************************/
 
#include "virtualmachine.h"
 
VirtualMachine* VirtualMachine::myInstance = NULL;
 
VirtualMachine& VirtualMachine::getInstance()
{
    if (myInstance == NULL)
    {
        myInstance = new VirtualMachine();
    }
 
    return *myInstance;
}
 
void VirtualMachine::deleteInstance()
{
    if (myInstance != NULL)
    {
        delete myInstance;
        myInstance = NULL;
    }
}
 
VirtualMachine::VirtualMachine()
{
}
 
VirtualMachine::~VirtualMachine()
{
    stop();
 
    myCommandThread.stop();
 
    ///FIXME: Verify that this works and does not cause segfaults
    for (map<int, SocketThread*>::iterator iter = mySocketThreads.begin(); iter != mySocketThreads.end(); iter++)
    {
        iter->second->stop();
        delete iter->second;
        //mySocketThreads.erase(iter);
    }
 
    mySocketThreads.clear();
 
    for (map<int, IntervalThread*>::iterator iter = myIntervalThreads.begin(); iter != myIntervalThreads.end(); iter++)
    {
        iter->second->stop();
        delete iter->second;
        //myIntervalThreads.erase(iter);
    }
 
    myIntervalThreads.clear();
}
 
void VirtualMachine::run()
{
    myGlobal = ObjectTemplate::New();
    myGlobal->Set(String::New("_quit"), FunctionTemplate::New(VirtualMachine::_quit));
    myGlobal->Set(String::New("_print"), FunctionTemplate::New(VirtualMachine::_print));
    myGlobal->Set(String::New("log"), FunctionTemplate::New(VirtualMachine::_log));
    myGlobal->Set(String::New("sendCanMessage"), FunctionTemplate::New(VirtualMachine::_sendCanMessage));
    myGlobal->Set(String::New("sendCanNMTMessage"), FunctionTemplate::New(VirtualMachine::_sendCanNMTMessage));
    myGlobal->Set(String::New("loadScript"), FunctionTemplate::New(VirtualMachine::_loadScript));
    myGlobal->Set(String::New("startIntervalThread"), FunctionTemplate::New(VirtualMachine::_startIntervalThread));
    myGlobal->Set(String::New("stopIntervalThread"), FunctionTemplate::New(VirtualMachine::_stopIntervalThread));
    myGlobal->Set(String::New("startSocketThread"), FunctionTemplate::New(VirtualMachine::_startSocketThread));
    myGlobal->Set(String::New("stopSocketThread"), FunctionTemplate::New(VirtualMachine::_stopSocketThread));
    myGlobal->Set(String::New("sendToSocketThread"), FunctionTemplate::New(VirtualMachine::_sendToSocketThread));
    myGlobal->Set(String::New("uint2hex"), FunctionTemplate::New(VirtualMachine::_uint2hex));
    myGlobal->Set(String::New("loadDataStore"), FunctionTemplate::New(VirtualMachine::_loadDataStore));
    myGlobal->Set(String::New("getFileContents"), FunctionTemplate::New(VirtualMachine::_getFileContents));
    myContext = Context::New(NULL, myGlobal);
 
 
    if (loadScript("System/Base.js"))
    {
        loadScript("System/Startup.js");
 
        loadScript("Autostart.js");
 
        Context::Scope contextScope(myContext);
 
        myFunctionStartup = Handle<Function>::Cast(myContext->Global()->Get(String::New("startup")));
    }
    else
    {
        ///FIXME: We should probably exit the application here
        return;
    }
 
    const int argc = 0;
    Handle<Value> argv[argc] = { };
    Handle<Value> result = myFunctionStartup->Call(myFunctionStartup, argc, argv);
 
 
    string commandPort = Settings::get("CommandPort");
    if (commandPort != "")
    {
        myCommandThread.setSettings(stoi(commandPort), "Command console");
        myCommandThread.start();
    }
    else
    {
        SyslogStream &slog = SyslogStream::getInstance();
        slog << "CommandPort is not defined, can not start Command console socket\n";
    }
 
 
    mySemaphore.lock();
 
    while (true)
    {
        while (myExpressions.size() > 0)
        {
            runExpression(myExpressions.pop());
        }
 
        mySemaphore.wait();
    }
 
    mySemaphore.unlock();
}
 
void VirtualMachine::queueExpression(Expression expression)
{
    myExpressions.push(expression);
    mySemaphore.broadcast();
}
 
string VirtualMachine::formatException(TryCatch* tryCatch)
{
    string result;
 
    HandleScope handleScope;
    String::Utf8Value exception(tryCatch->Exception());
    Handle<v8::Message> message = tryCatch->Message();
 
    string strException = *exception;
 
    if (message.IsEmpty())
    {
        result += strException + "\n";
    }
    else
    {
        String::Utf8Value filename(message->GetScriptResourceName());
        string strFilename = *filename;
 
        result += strFilename + ":" + itos(message->GetLineNumber()) + ": " + strException + "\n";
 
        String::Utf8Value sourceline(message->GetSourceLine());
        string strSourceline = *sourceline;
 
        result += strSourceline + "\n";
 
        string underline = rpad("", message->GetStartColumn(), ' ');
        underline = rpad(underline, message->GetEndColumn(), '^');
 
        result += underline + "\n";
    }
 
    return result;
}
 
bool VirtualMachine::loadDataStore(string storeName)
{
    SyslogStream &slog = SyslogStream::getInstance();
 
    string basePath = Settings::get("BasePath") + "Services/DataStores/";
    string scriptFileName = basePath + storeName + ".js";
 
    if (!file_exists(scriptFileName))
    {
        slog << "Failed to load datastore " + scriptFileName + ", file does not exist.\n";
        return false;
    }
 
    string scriptSource = file_get_contents(scriptFileName);
 
    scriptSource = "DataStore.addStore('" + storeName + "', " + str_replace("\n", "", scriptSource) + ");";
 
    Handle<String> source =  String::New(scriptSource.c_str(), scriptSource.length());
    Handle<String> name = String::New(scriptFileName.c_str(), scriptFileName.length());
 
    Context::Scope contextScope(myContext);
 
    TryCatch tryCatch;
 
    Handle<Script> script = Script::Compile(source, name);
 
    if (script.IsEmpty())
    {
        slog << formatException(&tryCatch);
        return false;
    }
    else
    {
        Handle<Value> result = script->Run();
 
        if (result.IsEmpty())
        {
            slog << formatException(&tryCatch);
            return false;
        }
 
        slog << "Loaded datastore " + storeName + "\n";
    }
 
    return true;
}
 
bool VirtualMachine::loadScript(string scriptName)
{
    SyslogStream &slog = SyslogStream::getInstance();
 
    string basePath = Settings::get("BasePath") + "Services/";
    string scriptFileName = basePath + scriptName;
 
    if (!file_exists(scriptFileName))
    {
        slog << "Failed to load " + scriptFileName + ", file does not exist.\n";
        return false;
    }
 
    string scriptSource = file_get_contents(scriptFileName);
 
    Handle<String> source =  String::New(scriptSource.c_str(), scriptSource.length());
    Handle<String> name = String::New(scriptName.c_str(), scriptName.length());
 
    Context::Scope contextScope(myContext);
 
    TryCatch tryCatch;
 
    Handle<Script> script = Script::Compile(source, name);
 
    if (script.IsEmpty())
    {
        slog << formatException(&tryCatch);
        return false;
    }
    else
    {
        Handle<Value> result = script->Run();
 
        if (result.IsEmpty())
        {
            slog << formatException(&tryCatch);
            return false;
        }
 
        slog << "Loaded " + scriptName + "\n";
    }
 
    return true;
}
 
unsigned int VirtualMachine::startIntervalThread(unsigned int timeout)
{
    IntervalThread *intervalThread = new IntervalThread(timeout);
 
    myIntervalThreads[intervalThread->getId()] = intervalThread;
    myIntervalThreads[intervalThread->getId()]->start();
 
    return intervalThread->getId();
}
 
bool VirtualMachine::stopIntervalThread(unsigned int id)
{
    if (myIntervalThreads.find(id) != myIntervalThreads.end())
    {
        delete myIntervalThreads[id];
        myIntervalThreads.erase(id);
        return true;
    }
 
    return false;
}
 
unsigned int VirtualMachine::startSocketThread(string address, int port, unsigned int reconnectTimeout)
{
    SocketThread *socketThread = new SocketThread(address, port, reconnectTimeout);
    mySocketThreads[socketThread->getId()] = socketThread;
    mySocketThreads[socketThread->getId()]->start();
 
    return socketThread->getId();
}
 
bool VirtualMachine::stopSocketThread(unsigned int id)
{
    if (mySocketThreads.find(id) != mySocketThreads.end())
    {
        delete mySocketThreads[id];
        mySocketThreads.erase(id);
        return true;
    }
 
    return false;
}
 
void VirtualMachine::sendToSocketThread(unsigned int id, string data)
{
    if (mySocketThreads.find(id) != mySocketThreads.end())
    {
        mySocketThreads[id]->send(data);
    }
}
 
void VirtualMachine::disconnectCommandClient(unsigned int id)
{
    myCommandThread.disconnectClient(id);
}
 
void VirtualMachine::sendToCommandClient(unsigned int id, string data)
{
    myCommandThread.sendTo(id, data);
}
 
void VirtualMachine::print(unsigned int id, string data)
{
    if (id == 0)
    {
        SyslogStream &slog = SyslogStream::getInstance();
        slog << data;
    }
    else
    {
        VirtualMachine &vm = VirtualMachine::getInstance();
        vm.sendToCommandClient(id, data);
    }
}
 
bool VirtualMachine::runExpression(Expression expression)
{
    string scriptName = "runExpression";
 
    string scriptData = expression.getScript();
 
    scriptData = "setClientId(" + itos(expression.getTargetId()) + ");\n" + scriptData + "\n";
 
    Handle<String> source =  String::New(scriptData.c_str(), scriptData.length());
    Handle<String> name = String::New(scriptName.c_str(), scriptName.length());
 
    Context::Scope contextScope(myContext);
 
    TryCatch tryCatch;
 
    Handle<Script> script = Script::Compile(source, name);
 
    if (script.IsEmpty())
    {
        print(expression.getTargetId(), formatException(&tryCatch));
        return false;
    }
    else
    {
        Handle<Value> result = script->Run();
 
        if (result.IsEmpty())
        {
            print(expression.getTargetId(), formatException(&tryCatch));
            return false;
        }
        else if (expression.getTargetId() != 0)
        {
             String::AsciiValue ascii(result);
             string resultString = *ascii;
 
             if (resultString != "undefined")
             {
                print(expression.getTargetId(), resultString + "\n");
             }
        }
    }
 
    return true;
}
 
 
Handle<Value> VirtualMachine::_quit(const Arguments& args)
{
    VirtualMachine &vm = VirtualMachine::getInstance();
 
    vm.disconnectCommandClient(args[0]->Uint32Value());
 
    return Undefined();
}
 
Handle<Value> VirtualMachine::_log(const Arguments& args)
{
    SyslogStream &slog = SyslogStream::getInstance();
 
    String::AsciiValue str(args[0]);
 
    slog << *str;
 
    return Undefined();
}
 
Handle<Value> VirtualMachine::_print(const Arguments& args)
{
    VirtualMachine &vm = VirtualMachine::getInstance();
 
    String::AsciiValue str(args[1]);
 
    vm.print(args[0]->Uint32Value(), *str);
 
    return Undefined();
}
 
Handle<Value> VirtualMachine::_sendCanMessage(const Arguments& args)
{
    CanNetManager &canMan = CanNetManager::getInstance();
 
    CanMessage canMessage;
 
    String::AsciiValue className(args[0]);
    canMessage.setClassName(*className);
    String::AsciiValue directionFlag(args[1]);
    canMessage.setDirectionFlag(*directionFlag);
    String::AsciiValue moduleName(args[2]);
    canMessage.setModuleName(*moduleName);
    canMessage.setModuleId(args[3]->Uint32Value());
    String::AsciiValue commandName(args[4]);
    canMessage.setCommandName(*commandName);
 
    String::AsciiValue dataString(args[5]);
 
    vector<string> parts = explode(",", trim(*dataString, ','));
    map<string, CanVariable> data;
 
    for (int n = 0; n < parts.size(); n++)
    {
        vector<string> keyAndValue = explode(":", parts[n]);
 
        data[keyAndValue[0]] = CanVariable(keyAndValue[0], keyAndValue[1]);
    }
 
    canMessage.setData(data);
   
    canMan.sendMessage(canMessage);
 
    return Undefined();
}
 
Handle<Value> VirtualMachine::_sendCanNMTMessage(const Arguments& args)
{
    CanNetManager &canMan = CanNetManager::getInstance();
 
    CanMessage canMessage;
 
    String::AsciiValue className(args[0]);
    canMessage.setClassName(*className);
    String::AsciiValue commandName(args[1]);
    canMessage.setCommandName(*commandName);
 
    String::AsciiValue dataString(args[2]);
 
    vector<string> parts = explode(",", trim(*dataString, ','));
    map<string, CanVariable> data;
 
    for (int n = 0; n < parts.size(); n++)
    {
        vector<string> keyAndValue = explode(":", parts[n]);
 
        data[keyAndValue[0]] = CanVariable(keyAndValue[0], keyAndValue[1]);
    }
 
    canMessage.setData(data);
 
    canMan.sendMessage(canMessage);
 
    return Undefined();
}
 
Handle<Value> VirtualMachine::_loadScript(const Arguments& args)
{
    VirtualMachine &vm = VirtualMachine::getInstance();
 
    String::AsciiValue str(args[0]);
 
    return Boolean::New(vm.loadScript(*str));
}
 
Handle<Value> VirtualMachine::_loadDataStore(const Arguments& args)
{
    VirtualMachine &vm = VirtualMachine::getInstance();
 
    String::AsciiValue str(args[0]);
 
    return Boolean::New(vm.loadDataStore(*str));
}
 
Handle<Value> VirtualMachine::_startIntervalThread(const Arguments& args)
{
    VirtualMachine &vm = VirtualMachine::getInstance();
    return Integer::New(vm.startIntervalThread(args[0]->Uint32Value()));
}
 
Handle<Value> VirtualMachine::_stopIntervalThread(const Arguments& args)
{
    VirtualMachine &vm = VirtualMachine::getInstance();
    return Boolean::New(vm.stopIntervalThread(args[0]->Uint32Value()));
}
 
Handle<Value> VirtualMachine::_startSocketThread(const Arguments& args)
{
    VirtualMachine &vm = VirtualMachine::getInstance();
 
    String::AsciiValue address(args[0]);
 
    return Integer::New(vm.startSocketThread(*address, args[1]->Uint32Value(), args[2]->Uint32Value()));
}
 
Handle<Value> VirtualMachine::_stopSocketThread(const Arguments& args)
{
    VirtualMachine &vm = VirtualMachine::getInstance();
 
    return Boolean::New(vm.stopSocketThread(args[0]->Uint32Value()));
}
 
Handle<Value> VirtualMachine::_sendToSocketThread(const Arguments& args)
{
    VirtualMachine &vm = VirtualMachine::getInstance();
 
    String::AsciiValue data(args[1]);
 
    vm.sendToSocketThread(args[0]->Uint32Value(), *data);
 
    return Undefined();
}
 
Handle<Value> VirtualMachine::_uint2hex(const Arguments& args)
{
    VirtualMachine &vm = VirtualMachine::getInstance();
 
    string hexId = uint2hex(args[0]->Uint32Value(), args[1]->Uint32Value());
 
    return String::New(hexId.c_str());
}
 
Handle<Value> VirtualMachine::_getFileContents(const Arguments& args)
{
    String::AsciiValue filename(args[0]);
 
    if (!file_exists(*filename))
    {
        return Undefined();
    }
 
    string content = file_get_contents(*filename);
 
    return String::New(content.c_str());
}
 
 
Subversion Repositories HomeAutomation

(root)/trunk/PcSoftware/Atom/VM/virtualmachine.cpp @ 1008 – Rev 1007 → 1008
