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.

**/

​

​

#ifndef ZABBIX_ZBXTRENDS_H

#define ZABBIX_ZBXTRENDS_H

​

#include "common.h"

#include "dbcache.h"

​

int zbx_trends_parse_base(const char *params, zbx_time_unit_t *base, char **error);

int zbx_parse_timeshift(time_t from, const char *timeshift, struct tm *tm, char **error);

​

int zbx_trends_parse_range(time_t from, const char *param, int *start, int *end, char **error);

int zbx_trends_parse_nextcheck(time_t from, const char *period_shift, time_t *nextcheck, char **error);

​

int zbx_trends_eval_avg(const char *table, zbx_uint64_t itemid, int start, int end, double *value, char **error);

int zbx_trends_eval_count(const char *table, zbx_uint64_t itemid, int start, int end, double *value, char **error);

int zbx_trends_eval_delta(const char *table, zbx_uint64_t itemid, int start, int end, double *value, char **error);

int zbx_trends_eval_max(const char *table, zbx_uint64_t itemid, int start, int end, double *value, char **error);

int zbx_trends_eval_min(const char *table, zbx_uint64_t itemid, int start, int end, double *value, char **error);

int zbx_trends_eval_sum(const char *table, zbx_uint64_t itemid, int start, int end, double *value, char **error);

​

/* trends function cache */

typedef struct

{

    zbx_uint64_t    hits;

    zbx_uint64_t    misses;

    zbx_uint64_t    items_num;

    zbx_uint64_t    requests_num;

}

zbx_tfc_stats_t;

​

int zbx_tfc_init(char **error);

int zbx_tfc_get_stats(zbx_tfc_stats_t *stats, char **error);

void    zbx_tfc_invalidate_trends(ZBX_DC_TREND *trends, int trends_num);

​

#endif