~drizzle-trunk/drizzle/development

/* -*- mode: c++; c-basic-offset: 2; indent-tabs-mode: nil; -*-

 *  vim:expandtab:shiftwidth=2:tabstop=2:smarttab:

 *

 *  Copyright (C) 2008 Sun Microsystems, Inc.

 *

 *  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; version 2 of the License.

 *

 *  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., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA

 */

#include <config.h>

#include <drizzled/plugin/scheduler.h>

#include <drizzled/errmsg_print.h>

#include <drizzled/gettext.h>

namespace drizzled {

typedef std::vector<plugin::Scheduler*> schedulers_t;

static schedulers_t g_schedulers;

static plugin::Scheduler* g_scheduler= NULL;

bool plugin::Scheduler::addPlugin(plugin::Scheduler *sched)

{

  BOOST_FOREACH(schedulers_t::reference it, g_schedulers)

  {

    if (it->getName() != sched->getName())

      continue;

    errmsg_printf(error::ERROR, _("Attempted to register a scheduler %s, but a scheduler has already been registered with that name.\n"), sched->getName().c_str());

    return true;

  }

  sched->deactivate();

  g_schedulers.push_back(sched);

  return false;

}

void plugin::Scheduler::removePlugin(plugin::Scheduler *sched)

{

  g_schedulers.erase(std::find(g_schedulers.begin(), g_schedulers.end(), sched));

}

bool plugin::Scheduler::setPlugin(const std::string& name)

{

  BOOST_FOREACH(schedulers_t::reference it, g_schedulers)

  {

    if (it->getName() != name)

      continue;

    if (g_scheduler)

      g_scheduler->deactivate();

    g_scheduler= it;

    g_scheduler->activate();

    return false;

  }

  errmsg_printf(error::WARN, _("Attempted to configure %s as the scheduler, which did not exist.\n"), name.c_str());

  return true;

}

plugin::Scheduler *plugin::Scheduler::getScheduler()

{

  return g_scheduler;

}

} /* namespace drizzled */