table_replication_applier_configuration.h

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/*
   Copyright (c) 2013, 2026, Oracle and/or its affiliates.
 
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   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
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   permission to link the program and your derivative works with the
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   the program or referenced in the documentation.
 
   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
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   Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301  USA */
 
#ifndef TABLE_REPLICATION_APPLIER_CONFIGURATION_H
#define TABLE_REPLICATION_APPLIER_CONFIGURATION_H
 
/**
  @file storage/perfschema/table_replication_applier_configuration.h
  Table replication_applier_configuration (declarations).
*/
 
#include <sys/types.h>
#include <time.h>
 
#include "my_base.h"
#include "sql/changestreams/apply/applier_version.h"
#include "sql/rpl_info.h" /*CHANNEL_NAME_LENGTH*/
#include "sql/rpl_rli.h"  /*enum_require_table_primary_key*/
#include "storage/perfschema/pfs_engine_table.h"
#include "storage/perfschema/table_helper.h"
 
class Field;
class Master_info;
class Plugin_table;
struct TABLE;
struct THR_LOCK;
 
#ifndef ENUM_RPL_YES_NO
#define ENUM_RPL_YES_NO
enum enum_rpl_yes_no { PS_RPL_YES = 1, PS_RPL_NO };
#endif
 
/**
  @addtogroup performance_schema_tables
  @{
*/
 
/** A row in the table*/
struct st_row_applier_config {
  char channel_name[CHANNEL_NAME_LENGTH];
  uint channel_name_length{0};
  time_t desired_delay{0};
  bool desired_delay_is_set{false};
  std::string privilege_checks_user;
  enum_rpl_yes_no requires_row_format;
  Relay_log_info::enum_require_table_primary_key
      require_table_primary_key_check{
          Relay_log_info::enum_require_table_primary_key::PK_CHECK_NONE};
  Assign_gtids_to_anonymous_transactions_info::enum_type
      assign_gtids_to_anonymous_transactions_type{
          Assign_gtids_to_anonymous_transactions_info::enum_type::AGAT_OFF};
  std::string assign_gtids_to_anonymous_transactions_value;
  uint applier_version{cs::apply::Applier_version::unspecified};
  std::size_t applier_worker_count;
  ulong applier_event_memory_limit;
};
 
class PFS_index_rpl_applier_config : public PFS_engine_index {
 public:
  PFS_index_rpl_applier_config()
      : PFS_engine_index(&m_key), m_key("CHANNEL_NAME") {}
 
  ~PFS_index_rpl_applier_config() override = default;
 
  virtual bool match(Master_info *mi);
 
 private:
  PFS_key_name m_key;
};
 
/** Table PERFORMANCE_SCHEMA.replication_applier_configuration */
class table_replication_applier_configuration : public PFS_engine_table {
  typedef PFS_simple_index pos_t;
 
 private:
  int make_row(Master_info *mi);
 
  /** Table share lock. */
  static THR_LOCK m_table_lock;
  /** Table definition. */
  static Plugin_table m_table_def;
 
  /** Current row */
  st_row_applier_config m_row;
  /** Current position. */
  pos_t m_pos;
  /** Next position. */
  pos_t m_next_pos;
 
 protected:
  /**
    Read the current row values.
    @param table            Table handle
    @param buf              row buffer
    @param fields           Table fields
    @param read_all         true if all columns are read.
  */
 
  int read_row_values(TABLE *table, unsigned char *buf, Field **fields,
                      bool read_all) override;
 
  table_replication_applier_configuration();
 
 public:
  ~table_replication_applier_configuration() override;
 
  /** Table share. */
  static PFS_engine_table_share m_share;
  static PFS_engine_table *create(PFS_engine_table_share *);
  static ha_rows get_row_count();
 
  void reset_position() override;
 
  int rnd_next() override;
  int rnd_pos(const void *pos) override;
 
  int index_init(uint idx, bool sorted) override;
  int index_next() override;
 
 private:
  PFS_index_rpl_applier_config *m_opened_index;
};
 
/** @} */
#endif