Subversion Repositories HomeAutomation

/***************************************************************************
 *   Copyright (C) November 29, 2008 by Mattias Runge                             *
 *   mattias@runge.se                                                      *
 *   cannetmanager.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 "canmessage.h"
#include "cannetmanager.h"

CanNetManager* CanNetManager::myInstance = NULL;

CanNetManager& CanNetManager::getInstance()
{
    if (myInstance == NULL)
    {
        myInstance = new CanNetManager();
    }

    return *myInstance;
}

void CanNetManager::deleteInstance()
{
    if (myInstance != NULL)
    {
        delete myInstance;
        myInstance = NULL;
    }
}

CanNetManager::CanNetManager()
{
    CanIdTranslator &translator = CanIdTranslator::getInstance();
    myChannel = new AsyncSocket();
}

CanNetManager::~CanNetManager()
{
    stop();
    CanIdTranslator::deleteInstance();
    myChannel->stop();
    delete myChannel;
}

void CanNetManager::run()
{
    Logger &log = Logger::getInstance();
    VirtualMachine &vm = VirtualMachine::getInstance();
    CanDebug &canDebug = CanDebug::getInstance();

    string address = Settings::get("CanNetAddress");
    if (address == "")
    {
        throw new Atom::Exception("CanNetAddress is not defined in the config file, can not start.");
    }

    string port = Settings::get("CanNetPort");
    if (port == "")
    {
        throw new Atom::Exception("CanNetPort is not defined in the config file, can not start.");
    }

    myChannel->setAddress(address);
    myChannel->setPort(stoi(port));
    myChannel->setReconnectTimeout(10);

    myChannel->start();

    myChannel->eventStartListen();

    bool waitingForPong = false;
    vector<string> dataLines;
    string data;
    CanMessage *canMessage = NULL;
    string expression;

    while (1)
    {
        myChannel->eventWait();

        while (myChannel->eventIsAvailable())
        {
            SocketEvent socketEvent = myChannel->eventFetch();

            switch (socketEvent.getType())
            {
                case SocketEvent::TYPE_CONNECTED:
                log.add("Connected to " + myChannel->getAddress() + ":" + itos(myChannel->getPort()) + ".\n");
                break;

                case SocketEvent::TYPE_CONNECTING:
                log.add("Connecting to " + myChannel->getAddress() + ":" + itos(myChannel->getPort()) + ".\n");
                break;

                case SocketEvent::TYPE_CONNECTION_CLOSED:
                log.add("Connection to " + myChannel->getAddress() + ":" + itos(myChannel->getPort()) + " closed.\n");
                vm.queueExpression("setAllOffline();");
                break;

                case SocketEvent::TYPE_CONNECTION_DIED:
                log.add("Connection to " + myChannel->getAddress() + ":" + itos(myChannel->getPort()) + " died :: " + socketEvent.getData() + "\n");
                vm.queueExpression("setAllOffline();");
                break;

                case SocketEvent::TYPE_CONNECTION_RESET:
                log.add("Connection to " + myChannel->getAddress() + ":" + itos(myChannel->getPort()) + " was reset :: " + socketEvent.getData() + "\n");
                vm.queueExpression("setAllOffline();");
                break;

                case SocketEvent::TYPE_CONNECTION_FAILED:
                log.add("Connection to " + myChannel->getAddress() + ":" + itos(myChannel->getPort()) + " failed :: " + socketEvent.getData() + "\n");
                vm.queueExpression("setAllOffline();");
                break;

                case SocketEvent::TYPE_DATA:
                waitingForPong = false;
                try
                {
                    dataLines = explode("\n", socketEvent.getData());

                    for (int n = 0; n < dataLines.size(); n++)
                    {
                        data = trim(dataLines[n], '\n');

                        if (data == "PONG")
                        {
                            log.add("Received pong.\n");
                            continue;
                        }

                        canMessage = new CanMessage(data);

                        if (!canMessage->isUnknown())
                        {
                            if (canMessage->getClassName() == "nmt")
                            {
                                expression = "handleNMTMessage(";
                                expression += "'" + canMessage->getClassName() + "', ";
                                expression += "'" + canMessage->getCommandName() + "', ";
                                expression += canMessage->getJSONData();
                                expression += ");";
                            }
                            else
                            {
                                expression = "handleMessage(";
                                expression += "'" + canMessage->getClassName() + "', ";
                                expression += "'" + canMessage->getDirectionFlag() + "', ";
                                expression += "'" + canMessage->getModuleName() + "', ";
                                expression += "" + itos(canMessage->getModuleId()) + ", ";
                                expression += "'" + canMessage->getCommandName() + "', ";
                                expression += canMessage->getJSONData();
                                expression += ");";
                            }

                            vm.queueExpression(expression);
                            canDebug.sendCanMessageToAll(*canMessage);
                        }
                        else
                        {
                            canDebug.sendToAll(data + "\n");
                        }

                        delete canMessage;
                        canMessage = NULL;
                    }
                }
                catch (CanMessageException* e)
                {
                    if (canMessage != NULL)
                    {
                        delete canMessage;
                    }

                    log.add("CanMessageException was caught:\n");
                    log.add(e->getDescription() + "\n");
                }
                break;

                case SocketEvent::TYPE_INACTIVITY:
                if (waitingForPong)
                {
                    log.add("We have not received a pong for our ping.\n");
                    waitingForPong = false;
                    vm.queueExpression("setAllOffline();");
                    myChannel->forceReconnect();
                }
                else
                {
                    //log.add("We have not received anything from the canDaemon in some time.\n";
                    waitingForPong = true;
                    log.add("Sending ping.\n");
                    myChannel->sendData("PING");
                }
                break;

                case SocketEvent::TYPE_WAITING_RECONNECT:
                log.add("Will try to reconnect to " + myChannel->getAddress() + ":" + itos(myChannel->getPort()) + " in " + itos(myChannel->getReconnectTimeout()) + " seconds.\n");
                break;
            }
        }
    }

    myChannel->eventStopListen();
}

void CanNetManager::sendMessage(CanMessage canMessage)
{
    CanDebug &canDebug = CanDebug::getInstance();
    myChannel->sendData(canMessage.getRaw());
    canDebug.sendCanMessageToAll(canMessage);
}