transportdirector.cc

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/*
 * Copyright (c) 2013-2014,2016 - Adjacent Link LLC, Bridgewater,
 * New Jersey
 * Copyright (c) 2009-2010 - DRS CenGen, LLC, Columbia, Maryland
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *
 * * Redistributions of source code must retain the above copyright
 *   notice, this list of conditions and the following disclaimer.
 * * Redistributions in binary form must reproduce the above copyright
 *   notice, this list of conditions and the following disclaimer in
 *   the documentation and/or other materials provided with the
 *   distribution.
 * * Neither the name of DRS CenGen, LLC nor the names of its
 *   contributors may be used to endorse or promote products derived
 *   from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
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 * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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 */

#include "transportdirector.h"
#include <sstream>

/*
 * Constructor
 *
 * @param filename reference to the base XML filename
 * @param builder reference to the TransportBuilder
 */
EMANE::Application::TransportDirector::TransportDirector(const std::string &filename,
                                                         TransportBuilder &builder):
  transportConfig_(filename),
  rTransportBuilder_(builder)
{}

/*
 * Destructor
 */
EMANE::Application::TransportDirector::~TransportDirector()
{}

/*
 * Constructs the event agent and generators
 *
 */
std::unique_ptr<EMANE::Application::TransportManager>
EMANE::Application::TransportDirector::construct(const uuid_t & uuid)
{
  /* Now go through configuration of each instance and build appropriately */
  EMANE::TransportInstanceConfigurations::const_iterator instanceIter =
    transportConfig_.getInstances().begin();

  TransportAdapters adapters;
  for ( ; instanceIter != transportConfig_.getInstances().end(); ++instanceIter)
    {
      /* Create the adapter for this transport */

      auto pTransport = createTransport(*instanceIter);

      adapters.push_back(rTransportBuilder_.buildTransportAdapter(pTransport,
                                                                  (*instanceIter)->getConfigurationUpdateRequest()));
    }

  /* Build TransportManager */
  return rTransportBuilder_.buildTransportManager(uuid,
                                                  adapters,
                                                  transportConfig_.getConfigurationUpdateRequest());
}

/*
 * Uses the passed-in builder to create a Transport and return
 * a pointer to it.
 *
 * @param pTIConfig Pointer to the Instance XML configuration
 *
 * @exception ConfigureException
 */
std::unique_ptr<EMANE::NEMLayer>
EMANE::Application::TransportDirector::createTransport(TransportInstanceConfiguration *pTIConfig)
{
  EMANE::LayerConfigurations::const_iterator transportIter =
    pTIConfig->getLayers().begin();

  EMANE::LayerConfiguration *pTransportConfig = (*transportIter);

  if (pTransportConfig == 0)
    {
      std::stringstream excStream;
      excStream << "Transport inside instance "
                << pTIConfig->getId() << " is NOT properly configured!"
                << std::ends;
      throw ConfigureException(excStream.str());
    }

  return rTransportBuilder_.buildTransport(pTIConfig->getId(),
                                           pTransportConfig->getLibrary(),
                                           pTransportConfig->getConfigurationUpdateRequest());
}