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Soft.cpp

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 * This file is part of openWNS (open Wireless Network Simulator)
 * _____________________________________________________________________________
 *
 * Copyright (C) 2004-2007
 * Chair of Communication Networks (ComNets)
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 * fax: ++49-241-80-22242
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 * www: http://www.openwns.org
 * _____________________________________________________________________________
 *
 * openWNS is free software; you can redistribute it and/or modify it under the
 * terms of the GNU Lesser General Public License version 2 as published by the
 * Free Software Foundation;
 *
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 * WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
 * A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for more
 * details.
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 * You should have received a copy of the GNU Lesser General Public License
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#include <WNS/ldk/sar/Soft.hpp>
#include <WNS/ldk/Layer.hpp>
#include <WNS/ldk/fun/FUN.hpp>
#include <WNS/Ttos.hpp>

using namespace wns::ldk;
using namespace wns::ldk::sar;

STATIC_FACTORY_REGISTER_WITH_CREATOR(Soft, FunctionalUnit, "wns.sar.Soft", FUNConfigCreator);

SoftCommand::SoftCommand()
    : SARCommand()
{
    PER  = 0.0;
} // SoftCommand

double
SoftCommand::getErrorRate() const
{
    return PER;
}

void
SoftCommand::setPER(const double _PER)
{
    PER = _PER;
}

Soft::Soft(fun::FUN* fuNet, const wns::pyconfig::View& config) :
        SAR<SoftCommand>(fuNet, config),
        HasReceptor<>(),
        HasConnector<>(),
        HasDeliverer<>(),
        Delayed<Soft>(),
        Cloneable<Soft>(),

        incoming(),
        fragmentNumber(0),
        PERProviderName(config.get<std::string>("PERProvider")),
        useProbe(config.get<bool>("useProbe")),
        probeName(config.get<std::string>("probeName")),
        perProbeBus( new wns::probe::bus::ContextCollector(wns::probe::bus::ContextProviderCollection(&getFUN()->getLayer()->getContextProviderCollection()),
                                   probeName))
{
    friends.PERProvider = NULL;
} // Soft

Soft::~Soft()
{}

void
Soft::onFUNCreated()
{
    friends.PERProvider = getFUN()->findFriend<FunctionalUnit*>(PERProviderName);
    assure(friends.PERProvider, "SoftSAR requires a PERProvider friend with name '" + PERProviderName + "'");

}

void
Soft::processIncoming(const CompoundPtr& compound)
{
    SoftCommand* command = getCommand(compound->getCommandPool());

    ErrorRateProviderInterface* ppi = dynamic_cast<ErrorRateProviderInterface*>(
        friends.PERProvider->getCommand(compound->getCommandPool()));

    assure(ppi, "Expected a ErrorRateProviderInterface instance.");

    PERStorageEntry received;
    received.first  = compound;
    received.second = ppi->getErrorRate();

    incoming.push_back(received);

    MESSAGE_BEGIN(NORMAL, logger, m, "");
    m << "received fragment "
      << " pos "
      << command->magic.pos
      << " with PER: "
      << received.second
      << " lastFragment "
      << ( command->peer.lastFragment ? "yes" : "no" )
        ;
    MESSAGE_END();

    assure(command->magic.fragmentNumber == fragmentNumber,
           "Missing fragment number: " + wns::Ttos(fragmentNumber) +
           ", received fragment number: " + wns::Ttos(command->magic.fragmentNumber));

    if(!command->peer.lastFragment)
    {
        ++fragmentNumber;
        return;
    }

    MESSAGE_BEGIN(NORMAL, logger, m, "");
    m << " -> compound complete, starting reassembly";
    MESSAGE_END();

    CommandPool* reassembledPCI = getFUN()->createCommandPool();
    getFUN()->getProxy()->partialCopy(this, reassembledPCI, compound->getCommandPool());
    CompoundPtr reassembled(new Compound(reassembledPCI, compound->getData()));

    double  packetGood = 1.0;
    int     counter = 0;

    for ( PERStorageContainer::iterator it = incoming.begin() ;
          it != incoming.end() ;
          it++ )
    {
        MESSAGE_BEGIN(NORMAL, logger, m, "");
        m << "fragment " << counter
          << " PER = " << (*it).second;
        MESSAGE_END();

        packetGood  *= (1 - (*it).second);
        counter++;
    }
    double resultingPER = 1 - packetGood;

    MESSAGE_BEGIN(NORMAL, logger, m, "");
    m << "Resulting overall PER = " << resultingPER ;
    MESSAGE_END();

    perProbeBus->put(resultingPER);

    SoftCommand* myCommand = activateCommand(reassembledPCI);
    myCommand->setPER( resultingPER );

    incoming.clear();
    fragmentNumber = 0;

    getDeliverer()->getAcceptor(reassembled)->onData(reassembled);

} // processIncoming

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