gearman/libgearman-server/queue.cc

/*  vim:expandtab:shiftwidth=2:tabstop=2:smarttab:
 * 
 *  Gearmand client and server library.
 *
 *  Copyright (C) 2011 Data Differential, http://datadifferential.com/
 *  All rights reserved.
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#include <config.h>

#include <iostream>

#include <boost/program_options.hpp>

#include <libgearman-server/plugins/queue/base.h>
#include <libgearman-server/queue.h>
#include <libgearman-server/log.h>


namespace gearmand {

namespace queue {

plugins::Queue::vector all_queue_modules;

void add(plugins::Queue* arg)
{
  all_queue_modules.push_back(arg);
}

void load_options(boost::program_options::options_description &all)
{
  for (plugins::Queue::vector::iterator iter= all_queue_modules.begin();
       iter != all_queue_modules.end();
       iter++)
  {
    all.add((*iter)->command_line_options());
  }
}

gearmand_error_t initialize(gearmand_st *, const std::string &name)
{
  bool launched= false;

  if (name.empty())
    return GEARMAN_SUCCESS;

  for (plugins::Queue::vector::iterator iter= all_queue_modules.begin();
       iter != all_queue_modules.end();
       iter++)
  {
    if (not name.compare((*iter)->name()))
    {
      if (launched)
      {
        return gearmand_gerror("Attempt to initialize multiple queues", GEARMAN_UNKNOWN_OPTION);
      }

      gearmand_error_t rc;
      if (gearmand_failed(rc= (*iter)->initialize()))
      {
        std::string error_string("Failed to initialize ");
        error_string+= name;

        return gearmand_gerror(error_string.c_str(), rc);
      }

      launched= true;
    }
  }

  if (not launched)
  {
    std::string error_string("Unknown queue ");
    error_string+= name;
    return gearmand_gerror(error_string.c_str(), GEARMAN_UNKNOWN_OPTION);
  }

  return GEARMAN_SUCCESS;
}

} // namespace queue
} // namespace gearmand