table_setup_actors.h

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/* Copyright (c) 2008, 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
  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, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301  USA */
 
#ifndef TABLE_SETUP_ACTORS_H
#define TABLE_SETUP_ACTORS_H
 
/**
  @file storage/perfschema/table_setup_actors.h
  Table SETUP_ACTORS (declarations).
*/
 
#include <sys/types.h>
 
#include "my_base.h"
#include "mysql_com.h"
#include "storage/perfschema/pfs_engine_table.h"
#include "storage/perfschema/table_helper.h"
 
class Field;
class Plugin_table;
struct PFS_setup_actor;
struct TABLE;
struct THR_LOCK;
 
/**
  @addtogroup performance_schema_tables
  @{
*/
 
/** A row of PERFORMANCE_SCHEMA.SETUP_ACTORS. */
struct row_setup_actors {
  /** Column HOST. */
  PFS_host_name m_host_name;
  /** Column USER. */
  PFS_user_name m_user_name;
  /** Column ROLE. */
  PFS_role_name m_role_name;
  /** Column ENABLED. */
  bool *m_enabled_ptr;
  /** Column HISTORY. */
  bool *m_history_ptr;
};
 
class PFS_index_setup_actors : public PFS_engine_index {
 public:
  PFS_index_setup_actors()
      : PFS_engine_index(&m_key_1, &m_key_2, &m_key_3),
        m_key_1("HOST"),
        m_key_2("USER"),
        m_key_3("ROLE") {}
 
  ~PFS_index_setup_actors() override = default;
 
  virtual bool match(PFS_setup_actor *pfs);
 
 private:
  PFS_key_host m_key_1;
  PFS_key_user m_key_2;
  PFS_key_role m_key_3;
};
 
/** Table PERFORMANCE_SCHEMA.SETUP_ACTORS. */
class table_setup_actors : public PFS_engine_table {
 public:
  /** Table share. */
  static PFS_engine_table_share m_share;
  /** Table builder. */
  static PFS_engine_table *create(PFS_engine_table_share *);
  static int write_row(PFS_engine_table *pfs_table, TABLE *table,
                       unsigned char *buf, Field **fields);
  static int delete_all_rows();
  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;
 
 protected:
  int read_row_values(TABLE *table, unsigned char *buf, Field **fields,
                      bool read_all) override;
 
  int update_row_values(TABLE *table, const unsigned char *old_buf,
                        unsigned char *new_buf, Field **fields) override;
 
  int delete_row_values(TABLE *table, const unsigned char *buf,
                        Field **fields) override;
 
  table_setup_actors();
 
 public:
  ~table_setup_actors() override = default;
 
 private:
  int make_row(PFS_setup_actor *pfs);
 
  /** Table share lock. */
  static THR_LOCK m_table_lock;
  /** Table definition. */
  static Plugin_table m_table_def;
 
  /** Current row. */
  row_setup_actors m_row;
  /** Current position. */
  PFS_simple_index m_pos;
  /** Next position. */
  PFS_simple_index m_next_pos;
 
 protected:
  PFS_index_setup_actors *m_opened_index;
};
 
/** @} */
#endif