Zabbix

/*

** Copyright (C) 2001-2025 Zabbix SIA

**

** This program is free software: you can redistribute it and/or modify it under the terms of

** the GNU Affero General Public License as published by the Free Software Foundation, version 3.

**

** 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 Affero General Public License for more details.

**

** You should have received a copy of the GNU Affero General Public License along with this program.

** If not, see <https://www.gnu.org/licenses/>.

**/

​

#ifndef ZABBIX_ZBXHISTORY_H

#define ZABBIX_ZBXHISTORY_H

​

#include "zbxvariant.h"

#include "zbxjson.h"

#include "zbxtime.h"

​

/* the item history value */

typedef struct

{

    zbx_timespec_t      timestamp;

    zbx_history_value_t value;

}

zbx_history_record_t;

​

ZBX_VECTOR_DECL(history_record, zbx_history_record_t)

​

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

​

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 zbx_history_value_t *value, int value_type);

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

void    zbx_history_value2variant(const zbx_history_value_t *value, unsigned char value_type, zbx_variant_t *var);

​

/* 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(const char *config_history_storage_url, const char *config_history_storage_opts,

        int config_log_slow_queries, char **error);

void    zbx_history_destroy(void);

​

typedef struct

{

    zbx_uint64_t        itemid;

    zbx_history_value_t value;

    zbx_uint64_t        lastlogsize;

    zbx_timespec_t      ts;

    int         mtime;

    unsigned char       value_type;

    unsigned char       flags;      /* see ZBX_DC_FLAG_* */

    unsigned char       state;