Zabbix

/*

** Zabbix

** Copyright (C) 2001-2022 Zabbix SIA

**

** This program is free software; you can redistribute it and/or modify

** it under the terms of the GNU General Public License as published by

** the Free Software Foundation; either version 2 of the License, or

** (at your option) any later version.

**

** This program is distributed in the hope that it will be useful,

** but WITHOUT ANY WARRANTY; without even the implied warranty of

** MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the

** GNU General Public License for more details.

**

** You should have received a copy of the GNU General Public License

** along with this program; if not, write to the Free Software

** Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.

**/

​

#include "common.h"

#include "db.h"

#include "dbcache.h"

#include "log.h"

#include "daemon.h"

#include "zbxself.h"

#include "zbxalgo.h"

#include "zbxserver.h"

​

#include "zbxhistory.h"

#include "history_compress.h"

#include "housekeeper.h"

#include "../../libs/zbxdbcache/valuecache.h"

​

extern unsigned char    process_type, program_type;

extern int      server_num, process_num;

​

static int  hk_period;

​

#define HK_INITIAL_DELETE_QUEUE_SIZE    4096

​

/* the maximum number of housekeeping periods to be removed per single housekeeping cycle */

#define HK_MAX_DELETE_PERIODS       4

​

/* global configuration data containing housekeeping configuration */

static zbx_config_t cfg;

​

/* Housekeeping rule definition.                                */

/* A housekeeping rule describes table from which records older */

/* than history setting must be removed according to optional   */

/* filter.                                                      */

typedef struct

{

    /* target table name */

    const char  *table;

​

    /* ID field name, required to select IDs of records that must be deleted */

    char    *field_name;

​

    /* Optional filter, must be empty string if not used. Only the records matching */

    /* filter are subject to housekeeping procedures.                               */

    const char  *filter;

​

    /* The oldest record in table (with filter in effect). The min_clock value is   */