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/>.

**/

​

#include "zbxhistory.h"

#include "history.h"

​

#include "zbxalgo.h"

#include "zbxdbhigh.h"

#include "zbxcacheconfig.h"

​

typedef struct

{

    unsigned char       initialized;

    zbx_vector_ptr_t    dbinserts;

}

zbx_sql_writer_t;

​

static zbx_sql_writer_t writer;

​

typedef void (*vc_str2value_func_t)(zbx_history_value_t *value, zbx_db_row_t row);

​

/* history table data */

typedef struct

{

    /* table name */

    const char      *name;

​

    /* field list */

    const char      *fields;

​

    /* string to value converter function, used to convert string value of DB row */

    /* to the value of appropriate type                                           */

    vc_str2value_func_t rtov;

}

zbx_vc_history_table_t;

​

/* row to value converters for all value types */

static void row2value_str(zbx_history_value_t *value, zbx_db_row_t row)

{

    value->str = zbx_strdup(NULL, row[0]);

}

​

static void row2value_dbl(zbx_history_value_t *value, zbx_db_row_t row)

{

    value->dbl = atof(row[0]);

}

​

static void row2value_ui64(zbx_history_value_t *value, zbx_db_row_t row)

{

    ZBX_STR2UINT64(value->ui64, row[0]);

}

​