gearman/libgearman/worker.hpp

/*  vim:expandtab:shiftwidth=2:tabstop=2:smarttab:
 * 
 *  Gearmand client and server library.
 *
 *  Copyright (C) 2011-2013 Data Differential, http://datadifferential.com/
 *  All rights reserved.
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 *
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 *  notice, this list of conditions and the following disclaimer.
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 *  in the documentation and/or other materials provided with the
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 *  promote products derived from this software without specific prior
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/*
  @note This header is internal, and should not be used by external programs.
*/

#pragma once

#include <stdexcept>

namespace {

inline void all_worker_PRINTER(const char *line, gearman_verbose_t verbose, void*)
{
  fprintf(stderr, "%s:%d WORKER %s(%s)\n", __FILE__, __LINE__, gearman_verbose_name(verbose), line);
}

}

namespace org { namespace gearmand { namespace libgearman {

class Worker {
public:
  Worker()
  {
    _worker= gearman_worker_create(NULL);

    if (_worker == NULL)
    {
      throw std::runtime_error("gearman_worker_create() failed");
    }
    enable_logging();

    enable_ssl();
  }

  Worker(in_port_t arg)
  {
    _worker= gearman_worker_create(NULL);

    if (_worker == NULL)
    {
      throw std::runtime_error("gearman_worker_create() failed");
    }
    enable_logging();
    enable_ssl();

    gearman_worker_add_server(_worker, "localhost", arg);
  }

  Worker(const Worker& worker_)
  {
    _worker= gearman_worker_clone(NULL, &worker_);

    if (_worker == NULL)
    {
      throw std::runtime_error("gearman_worker_create() failed");
    }
    enable_logging();
    enable_ssl();
  }

  void operator=(const Worker& worker_)
  { 
    gearman_worker_free(_worker);
    _worker= gearman_worker_clone(NULL, &worker_);

    if (_worker == NULL)
    {
      throw std::runtime_error("gearman_worker_create() failed");
    }
    enable_logging();
    enable_ssl();
  }

  gearman_worker_st* operator&() const
  { 
    return _worker;
  }

  gearman_worker_st* operator->() const
  { 
    return _worker;
  }

  ~Worker()
  {
    gearman_worker_free(_worker);
  }

  void enable_logging()
  { 
    if (getenv("YATL_WORKER_LOGGING"))
    {
      gearman_log_fn *func= all_worker_PRINTER;
      gearman_worker_set_log_fn(_worker, func, NULL, GEARMAN_VERBOSE_ERROR);
    }
  }

  void enable_ssl()
  { 
    if (getenv("GEARMAND_CA_CERTIFICATE"))
    {
      gearman_worker_add_options(_worker, GEARMAN_WORKER_SSL);
    }
  }

private:
  gearman_worker_st *_worker;

};

} /* namespace libgearman */ } /* namespace gearmand */ } /* namespace org */