a362bd0024
This number (defaults to 1) sets how many times mon_connect_to_db will try to connect to a backend before returning an error. Every connection attempt may take backend_connect_timeout seconds to complete. Also refactored code a bit. Renamed mon_connect_to_db to mon_ping_or_connect_to_db, since it does not connect if the connection is already alive.
102 lines
2.9 KiB
C
102 lines
2.9 KiB
C
#pragma once
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/*
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* Copyright (c) 2016 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: 2019-07-01
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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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/**
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* @file core/maxscale/monitor.h - The private monitor interface
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*/
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#include <maxscale/monitor.h>
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MXS_BEGIN_DECLS
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#define MON_ARG_MAX 8192
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#define DEFAULT_CONNECT_TIMEOUT 3
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#define DEFAULT_READ_TIMEOUT 1
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#define DEFAULT_WRITE_TIMEOUT 2
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#define DEFAULT_CONNECTION_ATTEMPTS 1
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#define MONITOR_DEFAULT_INTERVAL 10000 // in milliseconds
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/**
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* Monitor network timeout types
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*/
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typedef enum
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{
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MONITOR_CONNECT_TIMEOUT = 0,
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MONITOR_READ_TIMEOUT = 1,
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MONITOR_WRITE_TIMEOUT = 2,
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MONITOR_CONNECT_ATTEMPTS = 3
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} monitor_timeouts_t;
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MXS_MONITOR *monitor_alloc(char *, char *);
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void monitor_free(MXS_MONITOR *);
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void monitorStart(MXS_MONITOR *, const MXS_CONFIG_PARAMETER*);
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void monitorStop(MXS_MONITOR *);
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void monitorStopAll();
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void monitorStartAll();
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MXS_MONITOR *monitor_find(const char *);
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void monitorShow(DCB *, MXS_MONITOR *);
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void monitorShowAll(DCB *);
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void monitorList(DCB *);
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RESULTSET *monitorGetList();
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bool monitorAddServer(MXS_MONITOR *mon, SERVER *server);
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void monitorRemoveServer(MXS_MONITOR *mon, SERVER *server);
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void monitorAddUser(MXS_MONITOR *, char *, char *);
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void monitorAddParameters(MXS_MONITOR *monitor, MXS_CONFIG_PARAMETER *params);
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bool monitorRemoveParameter(MXS_MONITOR *monitor, const char *key);
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void monitorSetInterval (MXS_MONITOR *, unsigned long);
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bool monitorSetNetworkTimeout(MXS_MONITOR *, int, int);
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/**
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* @brief Serialize the servers of a monitor to a file
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*
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* This partially converts @c monitor into an INI format file. Only the servers
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* of the monitor are serialized. This allows the monitor to keep monitoring
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* the servers that were added at runtime even after a restart.
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*
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* NOTE: This does not persist the complete monitor configuration and requires
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* that an existing monitor configuration is in the main configuration file.
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* Changes to monitor parameters are not persisted.
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*
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* @param monitor Monitor to serialize
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* @return False if the serialization of the monitor fails, true if it was successful
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*/
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bool monitor_serialize_servers(const MXS_MONITOR *monitor);
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/**
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* @brief Serialize a monitor to a file
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*
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* This converts the static configuration of the monitor into an INI format file.
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*
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* @param monitor Monitor to serialize
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* @return True if serialization was successful
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*/
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bool monitor_serialize(const MXS_MONITOR *monitor);
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/**
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* Check if a server is being monitored and return the monitor.
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* @param server Server that is queried
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* @return The monitor watching this server, or NULL if not monitored
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*/
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MXS_MONITOR* monitor_server_in_use(const SERVER *server);
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MXS_END_DECLS
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