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Current File : /usr/include/mysql/mysql/group_replication_priv.h
/* Copyright (c) 2015, 2022, Oracle and/or its affiliates.

   This program is free software; you can redistribute it and/or modify
   it under the terms of the GNU General Public License, version 2.0,
   as published by the Free Software Foundation.

   This program is also distributed with certain software (including
   but not limited to OpenSSL) that is licensed under separate terms,
   as designated in a particular file or component or in included license
   documentation.  The authors of MySQL hereby grant you an additional
   permission to link the program and your derivative works with the
   separately licensed software that they have included with MySQL.

   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, version 2.0, 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,
   51 Franklin Street, Suite 500, Boston, MA 02110-1335 USA */

#ifndef GROUP_REPLICATION_PRIV_INCLUDE
#define	GROUP_REPLICATION_PRIV_INCLUDE

#ifndef MYSQL_SERVER
#define MYSQL_SERVER
#endif

#ifndef HAVE_REPLICATION
#define HAVE_REPLICATION
#endif

#include <my_global.h>
#include <my_thread.h>
#include <my_sys.h>

#include <debug_sync.h>
#include <log_event.h>
#include <replication.h>
#include <rpl_channel_service_interface.h>
#include <rpl_gtid.h>
#include <rpl_write_set_handler.h>


/**
  Server side initializations.
*/
int group_replication_init();


/**
  Returns the server connection attribute

  @Note This method implementation is on sql_class.cc

  @return the pthread for the connection attribute.
*/
my_thread_attr_t *get_connection_attrib();

/**
  Returns the server hostname, port and uuid.

  @param[out] hostname
  @param[out] port
  @param[out] uuid
  @param[out] server_version
  @param[out] server_ssl_variables

*/
void get_server_parameters(char **hostname, uint *port, char **uuid,
                           unsigned int *server_version,
                           st_server_ssl_variables* server_ssl_variables);

/**
  Returns the server_id.

  @return server_id
*/
ulong get_server_id();

/**
  Returns the server auto_increment_increment

  @return auto_increment_increment
*/
ulong get_auto_increment_increment();


/**
  Returns the server auto_increment_offset

  @return auto_increment_offset
*/
ulong get_auto_increment_offset();


/**
  Set server auto_increment_increment

  @param[in] auto_increment_increment
*/
void set_auto_increment_increment(ulong auto_increment_increment);


/**
  Set server auto_increment_offset

  @param[in] auto_increment_offset
*/
void set_auto_increment_offset(ulong auto_increment_offset);


/**
  Returns a struct containing all server startup information needed to evaluate
  if one has conditions to proceed executing master-master replication.

  @param[out] requirements

  @param[in] has_lock Caller should set this to true if the calling
  thread holds gtid_mode_lock; otherwise set it to false.
*/
void get_server_startup_prerequirements(Trans_context_info& requirements,
                                        bool has_lock);


/**
  Returns the server GTID_EXECUTED encoded as a binary string.

  @note Memory allocated to encoded_gtid_executed must be release by caller.

  @param[out] encoded_gtid_executed binary string
  @param[out] length                binary string length
*/
bool get_server_encoded_gtid_executed(uchar **encoded_gtid_executed,
                                      size_t *length);

#if !defined(NDEBUG)
/**
  Returns a text representation of a encoded GTID set.

  @note Memory allocated to returned pointer must be release by caller.

  @param[in] encoded_gtid_set      binary string
  @param[in] length                binary string length

  @return a pointer to text representation of the encoded set
*/
char* encoded_gtid_set_to_string(uchar *encoded_gtid_set, size_t length);
#endif


/**
  Return last gno for a given sidno, see
  Gtid_state::get_last_executed_gno() for details.
*/
rpl_gno get_last_executed_gno(rpl_sidno sidno);


/**
  Return sidno for a given sid, see Sid_map::add_sid() for details.
*/
rpl_sidno get_sidno_from_global_sid_map(rpl_sid sid);


/**
  Set slave thread default options.

  @param[in] thd  The thread
*/
void set_slave_thread_options(THD* thd);


/**
  Add thread to Global_THD_manager singleton.

  @param[in] thd  The thread
*/
void global_thd_manager_add_thd(THD *thd);


/**
  Remove thread from Global_THD_manager singleton.

  @param[in] thd  The thread
*/
void global_thd_manager_remove_thd(THD *thd);

/**
  Function that returns the write set extraction algorithm name.

  @param[in] algorithm  The algorithm value

  @return the algorithm name
*/
const char* get_write_set_algorithm_string(unsigned int algorithm);

/**
  Returns the value of slave_max_allowed_packet.

  @return slave_max_allowed_packet
*/
unsigned long get_slave_max_allowed_packet();

#endif	/* GROUP_REPLICATION_PRIV_INCLUDE */
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