124 lines
3.5 KiB
C++
124 lines
3.5 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: 2023-11-05
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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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#include "clustrixmon.hh"
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#include <string>
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#include <maxscale/monitor.hh>
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#include <maxscale/server.hh>
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namespace Clustrix
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{
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enum class Status
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{
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QUORUM,
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STATIC,
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DYNAMIC,
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UNKNOWN
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};
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Status status_from_string(const std::string& status);
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std::string to_string(Status status);
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enum class SubState
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{
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NORMAL,
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UNKNOWN
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};
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SubState substate_from_string(const std::string& substate);
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std::string to_string(SubState sub_state);
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enum class Softfailed
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{
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ACCEPT,
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REJECT
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};
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/**
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* Is a particular Clustrix node part of the quorum.
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*
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* @param zName The name of the Clustrix monitor instance.
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* @param pCon Valid MYSQL handle to the server.
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*
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* @return True, if the node is part of the quorum, false otherwise.
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*/
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bool is_part_of_the_quorum(const char* zName, MYSQL* pCon);
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/**
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* Is a particular Clustrix node part of the quorum.
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*
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* @param zName The name of the Clustrix monitor instance.
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* @param ms The monitored server object of a Clustrix node.
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*
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* @return True, if the node is part of the quorum, false otherwise.
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*/
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inline bool is_part_of_the_quorum(const char* zName, mxs::MonitorServer& ms)
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{
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mxb_assert(ms.con);
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return is_part_of_the_quorum(zName, ms.con);
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}
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/**
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* Is a particular Clustrix node being softfailed.
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*
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* @param zName The name of the Clustrix monitor instance.
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* @param pCon Valid MYSQL handle to the server.
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*
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* @return True, if the node is being softfailed, false otherwise.
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*/
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bool is_being_softfailed(const char* zName, MYSQL* pCon);
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/**
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* Ping or create connection to server and check whether it can be used
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* as hub.
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*
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* @param zName The name of the Clustrix monitor instance.
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* @param settings Connection settings
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* @param softfailed Whether a softfailed node is considered ok or not.
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* @param server Server object referring to a Clustrix node.
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* @param ppCon Address of pointer to MYSQL object referring to @server
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* (@c *ppCon may also be NULL).
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*
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* @return True, if the server can be used as hub, false otherwise.
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*
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* @note Upon return @c *ppCon will be non-NULL.
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*/
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bool ping_or_connect_to_hub(const char* zName,
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const mxs::MonitorServer::ConnectionSettings& settings,
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Softfailed softfailed,
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SERVER& server,
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MYSQL** ppCon);
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/**
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* Ping or create connection to server and check whether it can be used
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* as hub.
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*
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* @param zName The name of the Clustrix monitor instance.
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* @param settings Connection settings
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* @param softfailed Whether a softfailed node is considered ok or not.
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* @param ms The monitored server.
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*
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* @return True, if the server can be used as hub, false otherwise.
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*/
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inline bool ping_or_connect_to_hub(const char* zName,
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const mxs::MonitorServer::ConnectionSettings& settings,
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Softfailed softfailed,
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mxs::MonitorServer& ms)
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{
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return ping_or_connect_to_hub(zName, settings, softfailed, *ms.server, &ms.con);
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}
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}
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