TraCIServerAPI_InductionLoop.cpp

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/****************************************************************************/
// APIs for getting/setting induction loop values via TraCI
/****************************************************************************/
// SUMO, Simulation of Urban MObility; see http://sumo.sourceforge.net/
// Copyright (C) 2001-2011 DLR (http://www.dlr.de/) and contributors
/****************************************************************************/
//
//   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.
//
/****************************************************************************/


// ===========================================================================
// included modules
// ===========================================================================
#ifdef _MSC_VER
#include <windows_config.h>
#else
#include <config.h>
#endif

#include "TraCIConstants.h"
#include <microsim/output/MSDetectorControl.h>
#include <microsim/output/MSInductLoop.h>
#include "TraCIServerAPI_InductionLoop.h"

#ifdef CHECK_MEMORY_LEAKS
#include <foreign/nvwa/debug_new.h>
#endif // CHECK_MEMORY_LEAKS


// ===========================================================================
// used namespaces
// ===========================================================================
using namespace traci;


// ===========================================================================
// method definitions
// ===========================================================================
bool
TraCIServerAPI_InductionLoop::processGet(TraCIServer& server, tcpip::Storage& inputStorage,
        tcpip::Storage& outputStorage) {
    std::string warning = ""; // additional description for response
    // variable & id
    int variable = inputStorage.readUnsignedByte();
    std::string id = inputStorage.readString();
    // check variable
    if (variable!=ID_LIST&&variable!=LAST_STEP_VEHICLE_NUMBER&&variable!=LAST_STEP_MEAN_SPEED
            &&variable!=LAST_STEP_VEHICLE_ID_LIST&&variable!=LAST_STEP_OCCUPANCY
            &&variable!=LAST_STEP_LENGTH&&variable!=LAST_STEP_TIME_SINCE_DETECTION
            &&variable!=LAST_STEP_VEHICLE_DATA&&variable!=ID_COUNT
            &&variable!=VAR_POSITION&&variable!=VAR_LANE_ID) {
        server.writeStatusCmd(CMD_GET_INDUCTIONLOOP_VARIABLE, RTYPE_ERR, "Get Induction Loop Variable: unsupported variable specified", outputStorage);
        return false;
    }
    // begin response building
    tcpip::Storage tempMsg;
    //  response-code, variableID, objectID
    tempMsg.writeUnsignedByte(RESPONSE_GET_INDUCTIONLOOP_VARIABLE);
    tempMsg.writeUnsignedByte(variable);
    tempMsg.writeString(id);
    // process request
    if (variable==ID_LIST) {
        std::vector<std::string> ids;
        MSNet::getInstance()->getDetectorControl().getTypedDetectors(SUMO_TAG_INDUCTION_LOOP).insertIDs(ids);
        tempMsg.writeUnsignedByte(TYPE_STRINGLIST);
        tempMsg.writeStringList(ids);
    } else if (variable==ID_COUNT) {
        std::vector<std::string> ids;
        MSNet::getInstance()->getDetectorControl().getTypedDetectors(SUMO_TAG_INDUCTION_LOOP).insertIDs(ids);
        tempMsg.writeUnsignedByte(TYPE_INTEGER);
        tempMsg.writeInt((int) ids.size());
    } else {
        MSInductLoop* il = static_cast<MSInductLoop*>(MSNet::getInstance()->getDetectorControl().getTypedDetectors(SUMO_TAG_INDUCTION_LOOP).get(id));
        if (il==0) {
            server.writeStatusCmd(CMD_GET_INDUCTIONLOOP_VARIABLE, RTYPE_ERR, "Induction loop '" + id + "' is not known", outputStorage);
            return false;
        }
        switch (variable) {
        case ID_LIST:
            break;
        case LAST_STEP_VEHICLE_NUMBER:
            tempMsg.writeUnsignedByte(TYPE_INTEGER);
            tempMsg.writeInt((int)(il->getCurrentPassedNumber()));
            break;
        case LAST_STEP_MEAN_SPEED:
            tempMsg.writeUnsignedByte(TYPE_DOUBLE);
            tempMsg.writeDouble(il->getCurrentSpeed());
            break;
        case LAST_STEP_VEHICLE_ID_LIST: {
            tempMsg.writeUnsignedByte(TYPE_STRINGLIST);
            std::vector<std::string> ids = il->getCurrentVehicleIDs();
            tempMsg.writeStringList(ids);
        }
        break;
        case LAST_STEP_OCCUPANCY:
            tempMsg.writeUnsignedByte(TYPE_DOUBLE);
            tempMsg.writeDouble(il->getCurrentOccupancy());
            break;
        case LAST_STEP_LENGTH:
            tempMsg.writeUnsignedByte(TYPE_DOUBLE);
            tempMsg.writeDouble(il->getCurrentLength());
            break;
        case LAST_STEP_TIME_SINCE_DETECTION:
            tempMsg.writeUnsignedByte(TYPE_DOUBLE);
            tempMsg.writeDouble(il->getTimestepsSinceLastDetection());
            break;
        case LAST_STEP_VEHICLE_DATA: {
            std::vector<MSInductLoop::VehicleData> vd = il->collectVehiclesOnDet(MSNet::getInstance()->getCurrentTimeStep()-DELTA_T);
            tempMsg.writeUnsignedByte(TYPE_COMPOUND);
            tcpip::Storage tempContent;
            unsigned int cnt = 0;
            tempContent.writeUnsignedByte(TYPE_INTEGER);
            tempContent.writeInt((int) vd.size());
            ++cnt;
            for (unsigned int i=0; i<vd.size(); ++i) {
                MSInductLoop::VehicleData& svd = vd[i];
                tempContent.writeUnsignedByte(TYPE_STRING);
                tempContent.writeString(svd.idM);
                ++cnt;
                tempContent.writeUnsignedByte(TYPE_DOUBLE);
                tempContent.writeDouble(svd.lengthM);
                ++cnt;
                tempContent.writeUnsignedByte(TYPE_DOUBLE);
                tempContent.writeDouble(svd.entryTimeM);
                ++cnt;
                tempContent.writeUnsignedByte(TYPE_DOUBLE);
                tempContent.writeDouble(svd.leaveTimeM);
                ++cnt;
                tempContent.writeUnsignedByte(TYPE_STRING);
                tempContent.writeString(svd.typeIDM);
                ++cnt;
            }

            tempMsg.writeInt((int) cnt);
            tempMsg.writeStorage(tempContent);
            break;
        }
        case VAR_POSITION:
            tempMsg.writeUnsignedByte(TYPE_DOUBLE);
            tempMsg.writeDouble(il->getPosition());
            break;
        case VAR_LANE_ID:
            tempMsg.writeUnsignedByte(TYPE_STRING);
            tempMsg.writeString(il->getLane()->getID());
            break;
        default:
            break;
        }
    }
    server.writeStatusCmd(CMD_GET_INDUCTIONLOOP_VARIABLE, RTYPE_OK, warning, outputStorage);
    server.writeResponseWithLength(outputStorage, tempMsg);
    return true;
}


/****************************************************************************/