primary_election_utils.h

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/* Copyright (c) 2018, 2023, 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.
 
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   as designated in a particular file or component or in included license
   documentation.  The authors of MySQL hereby grant you an additional
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   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, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301  USA */
 
#ifndef PRIMARY_ELECTION_UTILS_INCLUDED
#define PRIMARY_ELECTION_UTILS_INCLUDED
 
#include <string>
 
#include "plugin/group_replication/include/member_version.h"
 
class Plugin_gcs_message;
 
class Election_member_info {
 public:
  Election_member_info(const std::string uuid, const Member_version &version,
                       bool is_primary);
 
  /**
    @return The member uuid
  */
  std::string &get_uuid();
 
  /**
    @return The member version
  */
  Member_version &get_member_version();
 
  /**
    @note This only returns true for single primary mode
    @return Is this member a primary?
  */
  bool is_primary();
 
  /**
    @return Did the member left the group
  */
  bool member_left();
 
  /**
    @return this member has channels?
  */
  bool has_channels();
 
  /**
    @return was this member information updated
  */
  bool is_information_set();
 
  /**
    Set the flag that tells if the member has channels
    @param running_channels the member has channels?
  */
  void set_has_running_channels(bool running_channels);
 
  /**
    Set the flag that tells if this class was updated
    @param set was the info updated?
  */
  void set_information_set(bool set);
 
  /**
    Did the member left the group
    @param left did the member left the group
  */
  void set_member_left(bool left);
 
 private:
  /** The member uuid */
  std::string member_uuid;
  /** This member version*/
  Member_version member_version;
  /** Is this member the primary*/
  bool is_member_primary;
  /** Does the member has running channels*/
  bool has_running_channels;
  /** Did the member leave?*/
  bool has_member_left;
  /** Was the info for this member set*/
  bool info_is_set;
};
 
bool send_message(Plugin_gcs_message *message);
 
/**
  Kill transactions and enable super_read_only mode
  @param err_msg                  the sql error message
*/
void kill_transactions_and_leave_on_election_error(std::string &err_msg);
 
#endif /* PRIMARY_ELECTION_UTILS_INCLUDED */