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UpperConvergence.cpp

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/*******************************************************************************
 * This file is part of openWNS (open Wireless Network Simulator)
 * _____________________________________________________________________________
 *
 * Copyright (C) 2004-2007
 * Chair of Communication Networks (ComNets)
 * Kopernikusstr. 5, D-52074 Aachen, Germany
 * phone: ++49-241-80-27910,
 * fax: ++49-241-80-22242
 * email: info@openwns.org
 * 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;
 *
 * openWNS 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 Lesser General Public License for more
 * details.
 *
 * You should have received a copy of the GNU Lesser General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
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#include <IP/UpperConvergence.hpp>

#include <WNS/module/Base.hpp>
#include <WNS/Assure.hpp>

#include <iomanip>

using namespace ip;

STATIC_FACTORY_REGISTER_WITH_CREATOR(
    UpperConvergence,
    wns::ldk::FunctionalUnit,
    "ip.upperConvergence",
    wns::ldk::FUNConfigCreator);

UpperConvergence::UpperConvergence(wns::ldk::fun::FUN* fun, const wns::pyconfig::View& _pyco) :
    wns::ldk::CommandTypeSpecifier<>(fun),
    wns::ldk::HasReceptor<>(),
    wns::ldk::HasConnector<>(),
    wns::ldk::HasDeliverer<>(),
    wns::ldk::Forwarding<UpperConvergence>(),
    wns::Cloneable<UpperConvergence>(),
    pyco(_pyco),
    //log("IP", "IP.UpperConvergence", wns::module::Base::getService<wns::logger::Master>("W-NS-MSG")),
    log(_pyco.get("logger")),
    ipHeaderReader(NULL),
    ipHeaderFU(NULL)
{
    MESSAGE_SINGLE(VERBOSE, log, "UpperConvergence started.");
}

void
UpperConvergence::onFUNCreated()
{
    ipHeaderFU = getFUN()->findFriend<IPHeader*>("ip.ipHeader");
    assure(ipHeaderFU, "No FU for the IP Header available!");
    ipHeaderReader = getFUN()->getCommandReader("ip.ipHeader");
    assure(ipHeaderReader, "No reader for the IP Header available!");
} // onFUNCreated

void
UpperConvergence::sendData(
    const wns::service::nl::Address& sourceAddress,
    const wns::service::nl::Address& peerAddress,
    const wns::osi::PDUPtr& sdu,
    wns::service::nl::protocolNumber protocol,
    wns::service::dll::FlowID dllFlowID)
{
    Bit payloadSize = sdu->getLengthInBits();

    MESSAGE_BEGIN(NORMAL, log, m, "OUT : " << std::setw(18) << sourceAddress);
    m << " -> " << std::setw(18) << peerAddress;
    m << " (" << payloadSize/8 << " bytes)";
    m << " DLL FlowID : " << dllFlowID;
    MESSAGE_END()

    wns::ldk::CompoundPtr compound(new wns::ldk::Compound(getFUN()->getProxy()->createCommandPool(), sdu));

    assure(ipHeaderFU, "No FU for the IP Header available!");
    ipHeaderFU->activateCommand(compound->getCommandPool());

    assure(ipHeaderReader, "No reader for the IP Header available!");
    IPCommand* ipHeader = ipHeaderReader->readCommand<IPCommand>(compound->getCommandPool());

    ipHeader->peer.destination = peerAddress;
    ipHeader->peer.source = sourceAddress;
    ipHeader->peer.protocol = protocol;
    ipHeader->local.dllFlowID = dllFlowID;

    if(this->isAccepting(compound)) {
        wns::ldk::Forwarding<UpperConvergence>::doSendData(compound);
    } else {
        // do nothing (throw away compound)
    }
}

void
UpperConvergence::processIncoming(const wns::ldk::CompoundPtr& compound)
{
    assure(ipHeaderReader, "No reader for the IP Header available!");
    IPCommand* ipHeader = ipHeaderReader->readCommand<IPCommand>(compound->getCommandPool());

    assure(handlerRegistry.knows(ipHeader->peer.protocol), "No DataHandler for protocol ");

    MESSAGE_BEGIN(NORMAL, log, m, "IN  : " << std::setw(18) << ipHeader->peer.destination);
    m << " <- " << std::setw(18) << ipHeader->peer.source;
    m << " (" << compound->getData()->getLengthInBits()/8 << " bytes)";
    MESSAGE_END()

    handlerRegistry.find(ipHeader->peer.protocol)->onData(ipHeader->peer.source, compound->getData());
}

void
UpperConvergence::registerHandler(wns::service::nl::protocolNumber  protocol, wns::service::nl::DataHandler* _dh)
{
    assure(_dh, "No valid Handler!");

    this->handlerRegistry.insert(protocol, _dh);
}

const wns::service::nl::Address&
UpperConvergence::getAddress() const
{
    return sourceAddress;
}

void
UpperConvergence::setSourceAddress(wns::service::nl::Address src)
{
    sourceAddress = src;
}

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