1 /* 2 ** Zabbix 3 ** Copyright (C) 2001-2021 Zabbix SIA 4 ** 5 ** This program is free software; you can redistribute it and/or modify 6 ** it under the terms of the GNU General Public License as published by 7 ** the Free Software Foundation; either version 2 of the License, or 8 ** (at your option) any later version. 9 ** 10 ** This program is distributed in the hope that it will be useful, 11 ** but WITHOUT ANY WARRANTY; without even the implied warranty of 12 ** MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 13 ** GNU General Public License for more details. 14 ** 15 ** You should have received a copy of the GNU General Public License 16 ** along with this program; if not, write to the Free Software 17 ** Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. 18 **/ 19 20 21 #ifndef ZABBIX_ZBXTRENDS_H 22 #define ZABBIX_ZBXTRENDS_H 23 24 #include "common.h" 25 #include "dbcache.h" 26 27 int zbx_trends_parse_base(const char *params, zbx_time_unit_t *base, char **error); 28 int zbx_parse_timeshift(time_t from, const char *timeshift, struct tm *tm, char **error); 29 30 int zbx_trends_parse_range(time_t from, const char *param, int *start, int *end, char **error); 31 int zbx_trends_parse_nextcheck(time_t from, const char *period_shift, time_t *nextcheck, char **error); 32 33 int zbx_trends_eval_avg(const char *table, zbx_uint64_t itemid, int start, int end, double *value, char **error); 34 int zbx_trends_eval_count(const char *table, zbx_uint64_t itemid, int start, int end, double *value, char **error); 35 int zbx_trends_eval_delta(const char *table, zbx_uint64_t itemid, int start, int end, double *value, char **error); 36 int zbx_trends_eval_max(const char *table, zbx_uint64_t itemid, int start, int end, double *value, char **error); 37 int zbx_trends_eval_min(const char *table, zbx_uint64_t itemid, int start, int end, double *value, char **error); 38 int zbx_trends_eval_sum(const char *table, zbx_uint64_t itemid, int start, int end, double *value, char **error); 39 40 /* trends function cache */ 41 typedef struct 42 { 43 zbx_uint64_t hits; 44 zbx_uint64_t misses; 45 zbx_uint64_t items_num; 46 zbx_uint64_t requests_num; 47 } 48 zbx_tfc_stats_t; 49 50 int zbx_tfc_init(char **error); 51 int zbx_tfc_get_stats(zbx_tfc_stats_t *stats, char **error); 52 void zbx_tfc_invalidate_trends(ZBX_DC_TREND *trends, int trends_num); 53 54 #endif 55