125 lines
4.2 KiB
C++
125 lines
4.2 KiB
C++
/* Copyright (c) 2014, 2018, Oracle and/or its affiliates. All rights reserved.
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License, version 2.0,
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as published by the Free Software Foundation.
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This program is also distributed with certain software (including
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but not limited to OpenSSL) that is licensed under separate terms,
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as designated in a particular file or component or in included license
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documentation. The authors of MySQL hereby grant you an additional
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permission to link the program and your derivative works with the
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separately licensed software that they have included with MySQL.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License, version 2.0, for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA */
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#ifndef SQL_THREAD_APPLIER_INCLUDE
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#define SQL_THREAD_APPLIER_INCLUDE
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#include <mysql/group_replication_priv.h>
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#include "my_inttypes.h"
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#include "plugin/group_replication/include/handlers/pipeline_handlers.h"
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#include "plugin/group_replication/include/replication_threads_api.h"
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class Applier_handler : public Event_handler {
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public:
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Applier_handler();
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int handle_event(Pipeline_event *ev, Continuation *cont);
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int handle_action(Pipeline_action *action);
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int initialize();
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int terminate();
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bool is_unique();
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int get_role();
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/**
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Initializes the SQL thread when receiving a configuration package
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@param reset_logs if a reset was executed in the server
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@param plugin_shutdown_timeout the plugin's timeout for component shutdown
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@return the operation status
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@retval 0 OK
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@retval !=0 Error
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*/
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int initialize_repositories(bool reset_logs, ulong plugin_shutdown_timeout);
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/**
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Starts the SQL thread when receiving a action package
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@return the operation status
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@retval 0 OK
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@retval !=0 Error
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*/
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int start_applier_thread();
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/**
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Stops the SQL thread when receiving a action package
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@return the operation status
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@retval 0 OK
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@retval !=0 Error
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*/
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int stop_applier_thread();
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/**
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Checks if the applier, and its workers when parallel applier is
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enabled, has already consumed all relay log, that is, applier is
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waiting for transactions to be queued.
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@return the applier status
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@retval true the applier is waiting
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@retval false otherwise
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*/
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bool is_applier_thread_waiting();
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/**
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Checks if all the queued transactions were executed.
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@param timeout the time (seconds) after which the method returns if the
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above condition was not satisfied
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@return the operation status
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@retval 0 All transactions were executed
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@retval -1 A timeout occurred
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@retval -2 An error occurred
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*/
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int wait_for_gtid_execution(double timeout);
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/**
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Checks if all the given transactions were executed.
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@param retrieved_set the set in string format of transaction to wait for
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@param timeout the time (seconds) after which the method returns if the
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above condition was not satisfied
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@param update_THD_status Shall the method update the THD stage
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@return the operation status
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@retval 0 All transactions were executed
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@retval -1 A timeout occurred
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@retval -2 An error occurred
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*/
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int wait_for_gtid_execution(std::string &retrieved_set, double timeout,
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bool update_THD_status = true);
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/**
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Checks if the channel's relay log contains partial transaction.
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@return
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@retval true If relaylog contains partial transaction.
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@retval false If relaylog does not contain partial transaction.
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*/
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int is_partial_transaction_on_relay_log();
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private:
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Replication_thread_api channel_interface;
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};
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#endif /* SQL_THREAD_APPLIER_INCLUDE */
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