/*
 * Copyright (c) 2010, Joseph Daly <skinny.moey@gmail.com>
 * 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 Joseph Daly 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 COPYRIGHT HOLDER OR CONTRIBUTORS BE
 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
 * THE POSSIBILITY OF SUCH DAMAGE.
 */

#ifndef PLUGIN_LOGGING_STATS_LOGGING_STATS_H
#define PLUGIN_LOGGING_STATS_LOGGING_STATS_H

#include "scoreboard_slot.h"
#include "user_commands.h"
#include "scoreboard.h"
#include <drizzled/atomics.h>
#include <drizzled/enum.h>
#include <drizzled/session.h>
#include <drizzled/plugin/logging.h>

#include <string>
#include <vector>

extern pthread_rwlock_t LOCK_current_scoreboard_vector;

class LoggingStats: public drizzled::plugin::Logging
{
public:

  LoggingStats(std::string name_arg);

  ~LoggingStats();

  virtual bool post(drizzled::Session *session);

  virtual bool postEnd(drizzled::Session *session);

  bool isEnabled() const
  {
    return is_enabled;
  }

  void enable()
  {
    is_enabled= true;
  }

  void disable()
  {
    is_enabled= false;
  }

  Scoreboard *getCurrentScoreboard()
  {          
    return current_scoreboard;
  }

  std::vector<ScoreboardSlot* > *getCumulativeStatsByUserVector()
  {
    return cumulative_stats_by_user_vector; 
  }

  uint32_t getCumulativeStatsByUserIndex()
  {
    return cumulative_stats_by_user_index;
  }

private:
  static const int32_t UNINITIALIZED= -1;

  std::vector<ScoreboardSlot* > *cumulative_stats_by_user_vector;

  uint32_t cumulative_stats_by_user_max;

  uint32_t cumulative_stats_by_user_index;

  Scoreboard *current_scoreboard;

  bool isBeingLogged(drizzled::Session *session);

  void updateCurrentScoreboard(ScoreboardSlot *scoreboard_slot, drizzled::Session *session);

  void updateCumulativeStatsByUserVector(ScoreboardSlot *current_scoreboard_slot);

  void preAllocateScoreboardSlotVector(uint32_t size,
                                       std::vector<ScoreboardSlot *> *scoreboard_slot_vector);

  void deleteScoreboardSlotVector(std::vector<ScoreboardSlot *> *scoreboard_slot_vector);

  drizzled::atomic<bool> is_enabled;

};
#endif /* PLUGIN_LOGGING_STATS_LOGGING_STATS_H */