#ifndef INCLUDES_MYSQL_INSTANCE_MANAGER_COMMANDS_H
#define INCLUDES_MYSQL_INSTANCE_MANAGER_COMMANDS_H
/* Copyright (C) 2004 MySQL AB

   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; either version 2 of the License, or
   (at your option) any later version.

   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., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA */

#include "command.h"
#include "instance.h"
#include "parse.h"

/*
  Print all instances of this instance manager.
  Grammar: SHOW ISTANCES
*/

class Show_instances : public Command
{
public:
  Show_instances(Instance_map *instance_map_arg): Command(instance_map_arg)
  {}

  int execute(struct st_net *net, ulong connection_id);
};


/*
  Reread configuration file and refresh instance map.
  Grammar: FLUSH INSTANCES
*/

class Flush_instances : public Command
{
public:
  Flush_instances(Instance_map *instance_map_arg): Command(instance_map_arg)
  {}

  int execute(struct st_net *net, ulong connection_id);
};


/*
  Print status of an instance.
  Grammar: SHOW ISTANCE STATUS <instance_name>
*/

class Show_instance_status : public Command
{
public:

  Show_instance_status(Instance_map *instance_map_arg,
                       const char *name, uint len);
  int execute(struct st_net *net, ulong connection_id);
  const char *instance_name;
};


/*
  Print options if chosen instance.
  Grammar: SHOW INSTANCE OPTIONS <instance_name>
*/

class Show_instance_options : public Command
{
public:

  Show_instance_options(Instance_map *instance_map_arg,
                        const char *name, uint len);

  int execute(struct st_net *net, ulong connection_id);
  const char *instance_name;
};


/*
  Start an instance.
  Grammar: START INSTANCE <instance_name>
*/

class Start_instance : public Command
{
public:
  Start_instance(Instance_map *instance_map_arg, const char *name, uint len);

  int execute(struct st_net *net, ulong connection_id);
  const char *instance_name;
  Instance *instance;
};


/*
  Stop an instance.
  Grammar: STOP INSTANCE <instance_name>
*/

class Stop_instance : public Command
{
public:
  Stop_instance(Instance_map *instance_map_arg, const char *name, uint len);

  Instance *instance;
  int execute(struct st_net *net, ulong connection_id);
  const char *instance_name;
};


/*
  Print requested part of the log
  Grammar:
    SHOW <instance_name> log {ERROR | SLOW | GENERAL} size[, offset_from_end]
*/

class Show_instance_log : public Command
{
public:

  Show_instance_log(Instance_map *instance_map_arg, const char *name,
                    uint len, Log_type log_type_arg, const char *size_arg,
                    const char *offset_arg);
  int execute(struct st_net *net, ulong connection_id);
  Log_type log_type;
  const char *instance_name;
  uint size;
  uint offset;
};


/*
  Shows the list of the log files, used by an instance.
  Grammar: SHOW <instance_name> LOG FILES
*/

class Show_instance_log_files : public Command
{
public:

  Show_instance_log_files(Instance_map *instance_map_arg,
                          const char *name, uint len);
  int execute(struct st_net *net, ulong connection_id);
  const char *instance_name;
  const char *option;
};


/*
  Syntax error command. This command is issued if parser reported a syntax
  error. We need it to distinguish the parse error and the situation when
  parser internal error occured. E.g. parsing failed because we hadn't had
  enought memory. In the latter case parse_command() should return an error.
*/

class Syntax_error : public Command
{
public:
  int execute(struct st_net *net, ulong connection_id);
};

/*
  Set an option for the instance.
  Grammar: SET instance_name.option=option_value
*/

class Set_option : public Command
{
public:
  Set_option(Instance_map *instance_map_arg, const char *name, uint len,
             const char *option_arg, uint option_len,
             const char *option_value_arg, uint option_value_len);
  /*
    the following function is virtual to let Unset_option to use
  */
  virtual int do_command(struct st_net *net);
  int execute(struct st_net *net, ulong connection_id);
protected:
  int correct_file(int skip);
public:
  const char *instance_name;
  uint instance_name_len;
  /* buffer for the option */
  enum { MAX_OPTION_LEN= 1024 };
  char option[MAX_OPTION_LEN];
  char option_value[MAX_OPTION_LEN];
};


/*
  Remove option of the instance from config file
  Grammar: UNSET instance_name.option
*/

class Unset_option: public Set_option
{
public:
  Unset_option(Instance_map *instance_map_arg, const char *name, uint len,
               const char *option_arg, uint option_len,
               const char *option_value_arg, uint option_value_len):
    Set_option(instance_map_arg, name, len, option_arg, option_len,
               option_value_arg, option_value_len)
    {}
  int do_command(struct st_net *net);
};


#endif /* INCLUDES_MYSQL_INSTANCE_MANAGER_COMMANDS_H */
