table_keyring_keys.h

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/* Copyright (c) 2012, 2022, 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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  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 TABLE_KEYRING_KEYS_H
#define TABLE_KEYRING_KEYS_H
 
/**
  @file storage/perfschema/table_keyring_keys.h
  TABLE KEYRING_KEYS.
*/
 
#include <sys/types.h>
#include "storage/perfschema/table_helper.h"
 
/**
  A row of PERFORMANCE_SCHEMA.KEYRING_KEYS table.
*/
struct row_keyring_keys {
  /** Column KEY_ID. In UTF8MB4 */
  std::string m_key_id;
  /** Column KEY_OWNER. In UTF8MB4 */
  std::string m_key_owner;
  /** Column BACK_END_KEY_ID. In UTF8MB4 */
  std::string m_backend_key_id;
};
 
/**
  @addtogroup performance_schema_tables
  @{
*/
 
/** Table PERFORMANCE_SCHEMA.KEYRING_KEYS. */
class table_keyring_keys : public PFS_engine_table {
 public:
  /** Table share */
  static PFS_engine_table_share s_share;
  /** Table builder */
  static PFS_engine_table *create(PFS_engine_table_share *);
  static ha_rows get_row_count();
 
  void reset_position(void) override;
  int rnd_next() override;
  int rnd_pos(const void *pos) override;
 
 private:
  table_keyring_keys();
  int read_row_values(TABLE *table, unsigned char *buf, Field **fields,
                      bool read_all) override;
  bool copy_keys_from_keyring();
 
 private:
  /** Safe copy of the keyring keys. */
  std::vector<row_keyring_keys> m_copy_keyring_keys;
 
  /** Current row. */
  row_keyring_keys *m_row;
  /** Current position. */
  PFS_simple_index m_pos;
  /** Next position. */
  PFS_simple_index m_next_pos;
 
  /** Table share lock. */
  static THR_LOCK s_table_lock;
  /** Table definition. */
  static Plugin_table s_table_def;
};
 
/** @} */
 
#endif