group_replication_status_service.h

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/* Copyright (c) 2021, 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,
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   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
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   Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301  USA */
 
#ifndef GROUP_REPLICATION_STATUS_SERVICE_H
#define GROUP_REPLICATION_STATUS_SERVICE_H
 
#include <mysql/components/service.h>
#include <stddef.h>
 
/**
  @ingroup group_components_services_inventory
 
  A service to get the status of a member of Group Replication.
 
  This is only available if the component is on a server with Group
  Replication plugin installed.
 
  @code
  SERVICE_TYPE(registry) *plugin_registry = mysql_plugin_registry_acquire();
  my_service<SERVICE_TYPE(group_replication_status_service_v1)> svc(
      "group_replication_status_service_v1", plugin_registry);
 
  if (svc.is_valid()) {
    bool error = svc->...
  }
  @endcode
*/
BEGIN_SERVICE_DEFINITION(group_replication_status_service_v1)
 
/**
  Checks if this member is part of a group in single-primary mode.
 
  @return status
    @retval true  this member is part of a group in single-primary mode
    @retval false otherwise (including case where member is even not running
                  Group Replication)
*/
DECLARE_BOOL_METHOD(is_group_in_single_primary_mode, ());
 
/**
  Checks if this member is part of a group in single-primary mode and if
  this member is the primary.
 
  @return status
    @retval true  this member is part of a group in single-primary mode
                  and is the primary
    @retval false otherwise
*/
DECLARE_BOOL_METHOD(is_group_in_single_primary_mode_and_im_the_primary, ());
 
/**
  Checks if this member is part of a group in single-primary mode and if
  this member is a secondary.
 
  @return status
    @retval true  this member is part of a group in single-primary mode
                  and is a secondary
    @retval false otherwise
*/
DECLARE_BOOL_METHOD(is_group_in_single_primary_mode_and_im_a_secondary, ());
 
/**
  Checks if this member is ONLINE and part of the group majority.
 
  @return status
    @retval true  this member is ONLINE and part of the group majority
    @retval false otherwise
*/
DECLARE_BOOL_METHOD(is_member_online_with_group_majority, ());
 
END_SERVICE_DEFINITION(group_replication_status_service_v1)
 
#endif /* GROUP_REPLICATION_STATUS_SERVICE_H */