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/*
** Zabbix
** Copyright (C) 2001-2019 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);
/* 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 *values);
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
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