sql_alter_instance.h

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/* Copyright (c) 2016, 2025, 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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#ifndef SQL_ALTER_INSTANCE_INCLUDED
#define SQL_ALTER_INSTANCE_INCLUDED
 
#include <my_inttypes.h>
 
class THD;
/*
  Base class for execution control for ALTER INSTANCE ... statement
*/
class Alter_instance {
 protected:
  THD *m_thd;
 
 public:
  explicit Alter_instance(THD *thd) : m_thd(thd) {}
  virtual bool execute() = 0;
  bool log_to_binlog();
  virtual ~Alter_instance() = default;
};
 
class Rotate_innodb_master_key : public Alter_instance {
 public:
  explicit Rotate_innodb_master_key(THD *thd) : Alter_instance(thd) {}
 
  bool execute() override;
  ~Rotate_innodb_master_key() override = default;
};
 
class Rotate_binlog_master_key : public Alter_instance {
 public:
  explicit Rotate_binlog_master_key(THD *thd) : Alter_instance(thd) {}
 
  /**
    Executes master key rotation by calling Rpl_encryption api.
 
    @retval False on success
    @retval True on error
  */
  bool execute() override;
  ~Rotate_binlog_master_key() override = default;
};
 
/** Alter Innodb redo log properties. */
class Innodb_redo_log : public Alter_instance {
 public:
  /**
    @param[in]  thd     server THD
    @param[in]  enable  enable or disable redo logging
  */
  Innodb_redo_log(THD *thd, bool enable)
      : Alter_instance(thd), m_enable(enable) {}
 
  bool execute() override;
 
 private:
  /** Enable or disable redo logging. */
  bool m_enable;
};
 
class Reload_keyring : public Alter_instance {
 public:
  explicit Reload_keyring(THD *thd) : Alter_instance(thd) {}
 
  /**
    Execute keyring reload operation by calling required APIs
 
    @returns status of the operation
      @retval false Success
      @retval true  Error
  */
  bool execute() override;
  virtual ~Reload_keyring() override = default;
 
 private:
  const static size_t s_error_message_length;
};
 
#endif /* SQL_ALTER_INSTANCE_INCLUDED */