c20a17238b
Several of the parameters are passed on from function to function. Having them all in an object cleans things up and makes adding more data easier.
105 lines
3.2 KiB
C++
105 lines
3.2 KiB
C++
/*
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* Copyright (c) 2018 MariaDB Corporation Ab
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*
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* Use of this software is governed by the Business Source License included
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* in the LICENSE.TXT file and at www.mariadb.com/bsl11.
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*
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* Change Date: 2022-01-01
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*
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* On the date above, in accordance with the Business Source License, use
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* of this software will be governed by version 2 or later of the General
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* Public License.
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*/
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#pragma once
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/**
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* Common definitions for MariaDBMonitor module. Should be included in every header or source file.
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*/
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#define MXS_MODULE_NAME "mariadbmon"
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#include <maxscale/ccdefs.hh>
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#include <string>
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#include <maxscale/json_api.h>
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#include <maxbase/stopwatch.hh>
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/** Utility macros for printing both MXS_ERROR and json error */
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#define PRINT_MXS_JSON_ERROR(err_out, format, ...) \
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do { \
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MXS_ERROR(format, ##__VA_ARGS__); \
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if (err_out) \
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{ \
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*err_out = mxs_json_error_append(*err_out, format, ##__VA_ARGS__); \
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} \
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} while (false)
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#define PRINT_ERROR_IF(log_mode, err_out, format, ...) \
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if (log_mode == Log::ON) \
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{ \
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PRINT_MXS_JSON_ERROR(err_out, format, ##__VA_ARGS__); \
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} \
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extern const int64_t SERVER_ID_UNKNOWN;
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extern const int64_t GTID_DOMAIN_UNKNOWN;
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extern const int PORT_UNKNOWN;
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extern const char* const CN_HANDLE_EVENTS;
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// Helper class for concatenating strings with a delimiter.
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class DelimitedPrinter
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{
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private:
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DelimitedPrinter(const DelimitedPrinter&) = delete;
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DelimitedPrinter& operator=(const DelimitedPrinter&) = delete;
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DelimitedPrinter() = delete;
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public:
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DelimitedPrinter(const std::string& separator);
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/**
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* Add to string.
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*
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* @param target String to modify
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* @param addition String to add. The delimiter is printed before the addition.
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*/
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void cat(std::string& target, const std::string& addition);
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private:
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const std::string m_separator;
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std::string m_current_separator;
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};
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enum class Log
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{
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OFF,
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ON
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};
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enum class OperationType
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{
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SWITCHOVER,
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FAILOVER
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};
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class MariaDBServer;
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/**
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* Class which encapsulates many settings and status descriptors for a failover/switchover.
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* Is more convenient to pass around than the separate elements. Most fields are constants or constant
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* pointers since they should not change during an operation.
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*/
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class ClusterOperation
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{
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public:
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const OperationType type; // Failover or switchover
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MariaDBServer* const promotion_target; // Which server will be promoted
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MariaDBServer* const demotion_target; // Which server will be demoted
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const bool demotion_target_is_master; // Was the demotion target the master?
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const bool handle_events; // Should scheduled server events be disabled/enabled?
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json_t** const error_out; // Json error output
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maxbase::Duration time_remaining; // How much time remains to complete the operation
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ClusterOperation(OperationType type,
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MariaDBServer* promotion_target, MariaDBServer* demotion_target,
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bool demo_target_is_master, bool handle_events,
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json_t** error, maxbase::Duration time_remaining);
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};
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