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_ZBXHISTORY_H

#define ZABBIX_ZBXHISTORY_H

​

/* the item history value */

typedef struct

{

    zbx_timespec_t  timestamp;

    history_value_t value;

}

zbx_history_record_t;

​

ZBX_VECTOR_DECL(history_record, zbx_history_record_t)

​

void    zbx_history_record_vector_clean(zbx_vector_history_record_t *vector, int value_type);

void    zbx_history_record_vector_destroy(zbx_vector_history_record_t *vector, int value_type);

void    zbx_history_record_clear(zbx_history_record_t *value, int value_type);

​

int zbx_history_record_compare_asc_func(const zbx_history_record_t *d1, const zbx_history_record_t *d2);

int zbx_history_record_compare_desc_func(const zbx_history_record_t *d1, const zbx_history_record_t *d2);

​

void    zbx_history_value2str(char *buffer, size_t size, const history_value_t *value, int value_type);

char    *zbx_history_value2str_dyn(const history_value_t *value, int value_type);

void    zbx_history_value_print(char *buffer, size_t size, const history_value_t *value, int value_type);

​

/* In most cases zbx_history_record_vector_destroy() function should be used to free the  */

/* value vector filled by zbx_vc_get_value* functions. This define simply better          */

/* mirrors the vector creation function to vector destroying function.                    */

#define zbx_history_record_vector_create(vector)    zbx_vector_history_record_create(vector)

​

​

int zbx_history_init(char **error);

void    zbx_history_destroy(void);

​

int zbx_history_add_values(const zbx_vector_ptr_t *history);

int zbx_history_get_values(zbx_uint64_t itemid, int value_type, int start, int count, int end,

        zbx_vector_history_record_t *values);

​

int zbx_history_requires_trends(int value_type);

​

​

#endif