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 "pb_discovery.h"

#include "zbxcachehistory.h"

#include "zbxcommon.h"

#include "zbxdb.h"

#include "zbxdbhigh.h"

#include "zbxjson.h"

#include "zbxproxybuffer.h"

#include "zbxshmem.h"

#include "zbxdbschema.h"

​

static zbx_history_table_t  dht = {

    "proxy_dhistory", "dhistory_lastid",

        {

        {"clock",       ZBX_PROTO_TAG_CLOCK,        ZBX_JSON_TYPE_INT,  NULL},

        {"druleid",     ZBX_PROTO_TAG_DRULE,        ZBX_JSON_TYPE_INT,  NULL},

        {"dcheckid",        ZBX_PROTO_TAG_DCHECK,       ZBX_JSON_TYPE_INT,  NULL},

        {"ip",          ZBX_PROTO_TAG_IP,       ZBX_JSON_TYPE_STRING,   NULL},

        {"dns",         ZBX_PROTO_TAG_DNS,      ZBX_JSON_TYPE_STRING,   ""},

        {"port",        ZBX_PROTO_TAG_PORT,     ZBX_JSON_TYPE_INT,  "0"},

        {"value",       ZBX_PROTO_TAG_VALUE,        ZBX_JSON_TYPE_STRING,   ""},

        {"status",      ZBX_PROTO_TAG_STATUS,       ZBX_JSON_TYPE_INT,  "0"},

        {"error",       ZBX_PROTO_TAG_ERROR,        ZBX_JSON_TYPE_STRING,   ""},

        {0}

        }

};

​

static void pb_discovery_add_rows_db(zbx_list_t *rows, zbx_list_item_t *next, zbx_uint64_t *lastid);

​

struct zbx_pb_discovery_data

{

    zbx_pb_state_t  state;

    zbx_list_t  rows;

    int     rows_num;

    zbx_db_insert_t db_insert;

    zbx_uint64_t    handleid;

};

​

void    pb_list_free_discovery(zbx_list_t *list, zbx_pb_discovery_t *row)

{

    if (NULL != row->ip)

        list->mem_free_func(row->ip);

    if (NULL != row->dns)

        list->mem_free_func(row->dns);

    if (NULL != row->value)

        list->mem_free_func(row->value);

    if (NULL != row->error)

        list->mem_free_func(row->error);

    list->mem_free_func(row);

}

​

/******************************************************************************

 *                                                                            *

 * Purpose: estimate approximate discovery row size in cache                  *

 *                                                                            *

 ******************************************************************************/

size_t  pb_discovery_estimate_row_size(const char *value, const char *ip, const char *dns, const char *error)

{

    size_t  size = 0;

​

    size += zbx_shmem_required_chunk_size(sizeof(zbx_pb_discovery_t));

    size += zbx_shmem_required_chunk_size(sizeof(zbx_list_item_t));

    size += zbx_shmem_required_chunk_size(strlen(value) + 1);

    size += zbx_shmem_required_chunk_size(strlen(ip) + 1);

    size += zbx_shmem_required_chunk_size(strlen(dns) + 1);

    size += zbx_shmem_required_chunk_size(strlen(error) + 1);

​

    return size;

}

​

static int  pb_get_discovery_db(struct zbx_json *j, zbx_uint64_t *lastid, int *more)

{

    int     records_num = 0;

    zbx_uint64_t    id;

​

    id = pb_get_lastid(dht.table, dht.lastidfield);

​

    /* get history data in batches by ZBX_MAX_HRECORDS records and stop if: */