mysql_transaction_delegate_control.h

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/* Copyright (c) 2022, 2025, Oracle and/or its affiliates.
 
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#ifndef MYSQL_TRANSACTION_DELEGATE_CONTROL_H
#define MYSQL_TRANSACTION_DELEGATE_CONTROL_H
#include <mysql/components/service.h>
 
/**
  A service to manage transactions execution.
  The service will stop new incoming transactions to execute.
 
  @note Some management related queries are allowed.
 
  @sa @ref mysql_new_transaction_control_imp
*/
BEGIN_SERVICE_DEFINITION(mysql_new_transaction_control)
 
/**
  Method to stop new incoming transactions allowing some management queries
  to run. New incoming transactions are rolled back.
 
  @sa mysql_new_transaction_control_imp
*/
DECLARE_METHOD(void, stop, ());
 
/**
  Method that allows the transactions which were earlier stopped by
  stop method.
 
  @sa mysql_new_transaction_control_imp
*/
DECLARE_METHOD(void, allow, ());
 
END_SERVICE_DEFINITION(mysql_new_transaction_control)
 
/**
  A service to manage transactions execution.
  This service rollbacks the transactions that reach the before_commit state.
  This service does not impact transactions that are already in the commit
  stage.
 
  @sa @ref mysql_before_commit_transaction_control_imp
*/
BEGIN_SERVICE_DEFINITION(mysql_before_commit_transaction_control)
 
/**
  This method rollback any transaction that reaches the commit stage.
 
  @sa mysql_before_commit_transaction_control_imp
*/
DECLARE_METHOD(void, stop, ());
 
/**
  Method re-allows the commit, earlier stopped in stop function.
 
  @note Flag set in stop function to rollback the transactions in commit is
        unset.
 
  @sa mysql_before_commit_transaction_control_imp
*/
DECLARE_METHOD(void, allow, ());
 
END_SERVICE_DEFINITION(mysql_before_commit_transaction_control)
 
/**
  This service will gracefully close all the client connections which are
  running a binloggable transaction that did not reach the commit stage.
  The term `bingloggable transactions` is used to identify transactions that
  will be written to the binary log once they do commit.
  At present when binlog cache is initialized by a transaction, the transaction
  is marked as `bingloggable`.
 
  @sa @ref
  mysql_close_connection_of_binloggable_transaction_not_reached_commit_imp
*/
BEGIN_SERVICE_DEFINITION(
    mysql_close_connection_of_binloggable_transaction_not_reached_commit)
 
/**
  Method that gracefully closes all the client connections which are running a
  binloggable transaction that did not reach the commit stage.
 
  @note method sets the killed flag with value THD::KILL_CONNECTION in the THD
  to gracefully KILL the transaction and client connection.
 
  @sa mysql_close_connection_of_binloggable_transaction_not_reached_commit_imp
*/
DECLARE_METHOD(void, close, ());
 
END_SERVICE_DEFINITION(
    mysql_close_connection_of_binloggable_transaction_not_reached_commit)
 
#endif /* MYSQL_TRANSACTION_DELEGATE_CONTROL_H */