// $Id$
//
// Copyright (C) 2010
// Fraunhofer Institute for Open Communication Systems (FOKUS)
// Competence Center NETwork research (NET), St. Augustin, GERMANY
//     Thorsten Horstmann <tho@berlios.de>
//
// 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.

/** \file
    \brief QueueingSocketSink non-inline template implementation  */

//#include "QueueingSocketSink.ih"

// Custom includes

#define prefix_
///////////////////////////////ct.p////////////////////////////////////////

///////////////////////////////////////////////////////////////////////////
// senf::ppi::QueueingAlgorithmRegistry

template <class QAlgorithm>
prefix_ void senf::ppi::QueueingAlgorithmRegistry::registerQAlgorithm(std::string key)
{
    if (qAlgoMap_.find( key) == qAlgoMap_.end() )
        qAlgoMap_.insert(key, new detail::QueueingAlgorithmRegistry_Entry<QAlgorithm>() );
    else
        throw Exception("Duplicated QAlgorithm Registration ") << key;
}

///////////////////////////////////////////////////////////////////////////
// senf::ppi::detail::QueueingAlgorithmRegistry_Entry<QAlgorithm>

template <class QAlgorithm>
prefix_ senf::ppi::QueueingAlgorithm::ptr senf::ppi::detail::QueueingAlgorithmRegistry_Entry<QAlgorithm>::create()
    const
{
    return QAlgorithm::create();
}

///////////////////////////////////////////////////////////////////////////
// senf::ppi::module::PassiveQueueingSocketSink<Writer>

template <class Writer>
prefix_ senf::ppi::module::PassiveQueueingSocketSink<Writer>::PassiveQueueingSocketSink(Handle const & handle, QueueingAlgorithm::ptr qAlgorithm)
    : dir( this),
      handle_( handle), writer_( ),
      qAlgo_( qAlgorithm),
      event_( handle_, IOEvent::Write)
{
    namespace fty = console::factory;
    dir.add( "active", qAlgo_->consoleDir());
    dir.add( "set", fty::Command(
            &PassiveQueueingSocketSink<Writer>::setQAlgorithm, this) );
    dir.add( "list", fty::Command(
            &QueueingAlgorithmRegistry::dump, &QueueingAlgorithmRegistry::instance()));
    registerEvent( event_, &PassiveQueueingSocketSink::writable );
    event_.enabled( false);
    noroute(input);
    input.onRequest( &PassiveQueueingSocketSink::write);
    input.qdisc( QueueingDiscipline::NONE);
    checkThrottle();
}

template <class Writer>
prefix_ void senf::ppi::module::PassiveQueueingSocketSink<Writer>::write()
{
    PacketType p ( input());
    if (qAlgo_->size() > 0) {
        qAlgo_->enqueue( p);
        return;
    }
    if (! writer_( handle_, p)) {
        if (qAlgo_->enqueue( p) && !event_.enabled()) {
          event_.enabled( true);
        }
    }
}

template <class Writer>
prefix_ void senf::ppi::module::PassiveQueueingSocketSink<Writer>::writable()
{
    PacketType p (qAlgo_->dequeue());
    if (p)
        writer_( handle_, p);
    if (qAlgo_->size() == 0) {
        event_.enabled( false);
    }
}

template <class Writer>
prefix_ void senf::ppi::module::PassiveQueueingSocketSink<Writer>::checkThrottle()
{
    if (handle_.valid())
        input.unthrottle();
    else
        input.throttle();
}

template <class Writer>
prefix_ void senf::ppi::module::PassiveQueueingSocketSink<Writer>::qAlgorithm(QueueingAlgorithm::ptr qAlgorithm)
{
//    dir.remove( "active");
    qAlgo_.reset( qAlgorithm);
    dir.add( "active", qAlgo_->consoleDir());
    if (event_.enabled())
        event_.enabled( false);
}

template <class Writer>
prefix_ void senf::ppi::module::PassiveQueueingSocketSink<Writer>::setQAlgorithm(std::string const & key)
{
    qAlgorithm( QueueingAlgorithmRegistry::instance().createQAlgorithm( key));
}

///////////////////////////////ct.e////////////////////////////////////////
#undef prefix_


// Local Variables:
// mode: c++
// fill-column: 100
// comment-column: 40
// c-file-style: "senf"
// indent-tabs-mode: nil
// ispell-local-dictionary: "american"
// compile-command: "scons -u test"
// End::