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 "zbxprometheus.h"

​

#include "zbxalgo.h"

#include "zbxeval.h"

#include "zbxexpr.h"

#include "zbxjson.h"

#include "zbxnum.h"

#include "zbxregexp.h"

#include "zbxstr.h"

#include "zbxtypes.h"

​

#define ZBX_PROMETHEUS_HINT_HELP    0

#define ZBX_PROMETHEUS_HINT_TYPE    1

​

typedef enum

{

    ZBX_PROMETHEUS_CONDITION_OP_EQUAL,

    ZBX_PROMETHEUS_CONDITION_OP_REGEX,

    ZBX_PROMETHEUS_CONDITION_OP_EQUAL_VALUE,

    ZBX_PROMETHEUS_CONDITION_OP_NOT_EQUAL,

    ZBX_PROMETHEUS_CONDITION_OP_REGEX_NOT_MATCHED

}

zbx_prometheus_condition_op_t;

​

/* key-value matching data */

typedef struct

{

    /* the key to match, optional - can be NULL */

    char                *key;

    /* the pattern to match */

    char                *pattern;

    /* the condition operations */

    zbx_prometheus_condition_op_t   op;

}

zbx_prometheus_condition_t;

​

ZBX_PTR_VECTOR_DECL(prometheus_condition, zbx_prometheus_condition_t *)

​

/* the prometheus pattern filter */

typedef struct

{

    /* metric filter, optional - can be NULL */

    zbx_prometheus_condition_t      *metric;

    /* value filter, optional - can be NULL */

    zbx_prometheus_condition_t      *value;

    /* label filters */

    zbx_vector_prometheus_condition_t   labels;

}

zbx_prometheus_filter_t;

​

/* the prometheus metric HELP, TYPE hints in comments */

typedef struct

{

    char    *metric;

    char    *type;

    char    *help;

}

zbx_prometheus_hint_t;

​

/* indexing support */

​

typedef struct

{

    char                *value;

    zbx_vector_prometheus_row_t rows;

}

zbx_prometheus_index_t;

​

/* TYPE, HELP hint hashset support */

​

static zbx_hash_t   prometheus_hint_hash(const void *d)

{

    const zbx_prometheus_hint_t *hint = (const zbx_prometheus_hint_t *)d;

​

    return ZBX_DEFAULT_STRING_HASH_FUNC(hint->metric);

}

​