/* Copyright (C) 2014 InfiniDB, 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 Street, Fifth Floor, Boston,
   MA 02110-1301, USA. */

/*******************************************************************************
 * $Id: we_simplesyslog.h 4450 2013-01-21 14:13:24Z rdempsey $
 *
 *******************************************************************************/
/** @file */

#pragma once

#include <boost/thread.hpp>

#include "messagelog.h"
#include "messageobj.h"

#define EXPORT

/** Namespace WriteEngine */
namespace WriteEngine
{
/**
 * @brief SimpleSysLog class is a simple logger that only logs to syslog.
 *
 * Note that the instance() and setLoggingID() funtions are not thread-safe.
 * They should be called once, upfront by the main thread to perform setup.
 */
class SimpleSysLog
{
 public:
  /**
   * @brief Singleton accessor.
   */
  EXPORT static SimpleSysLog* instance();

  /**
   * @brief Modify the LoggingID to be used.  Mainly used to control the
   * subsystem ID.
   */
  EXPORT void setLoggingID(const logging::LoggingID& loggingID);

  /**
   * @brief Function that logs a syslog msg.
   */
  EXPORT void logMsg(const logging::Message::Args& msgArgs, logging::LOG_TYPE logType,
                     logging::Message::MessageID msgId);

 private:
  SimpleSysLog();
  SimpleSysLog(const SimpleSysLog&);
  SimpleSysLog& operator=(const SimpleSysLog&);

  static SimpleSysLog* fSysLogger;
  logging::LoggingID fLoggingID;
  boost::mutex fWriteLockMutex;  // logging mutex
};

#undef EXPORT

}  // namespace WriteEngine