table_setup_actors.h

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/* Copyright (c) 2008, 2024, 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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  but WITHOUT ANY WARRANTY; without even the implied warranty of
  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
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  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_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{nullptr};
  /** Column HISTORY. */
  bool *m_history_ptr{nullptr};
};
 
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