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/*
** Zabbix
** Copyright (C) 2001-2022 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.
**/
#include "zbxcacheconfig.h"
#include "zbxcommon.h"
#include "log.h"
/******************************************************************************
* *
* Purpose: sorting function to sort LLD macros by unique name *
* *
******************************************************************************/
int zbx_lld_macro_paths_compare(const void *d1, const void *d2)
{
const zbx_lld_macro_path_t *r1 = *(const zbx_lld_macro_path_t **)d1;
const zbx_lld_macro_path_t *r2 = *(const zbx_lld_macro_path_t **)d2;
return strcmp(r1->lld_macro, r2->lld_macro);
}
/******************************************************************************
* *
* Purpose: retrieve list of LLD macros *
* *
* Parameters: lld_ruleid - [IN] LLD id *
* lld_macro_paths - [OUT] use json path to extract from jp_row *
* error - [OUT] in case json path is invalid *
* *
******************************************************************************/
int zbx_lld_macro_paths_get(zbx_uint64_t lld_ruleid, zbx_vector_ptr_t *lld_macro_paths, char **error)
{
DB_RESULT result;
DB_ROW row;
zbx_lld_macro_path_t *lld_macro_path;
int ret = SUCCEED;
zabbix_log(LOG_LEVEL_DEBUG, "In %s()", __func__);
result = DBselect(
"select lld_macro,path"
" from lld_macro_path"
" where itemid=" ZBX_FS_UI64,
lld_ruleid);
while (NULL != (row = DBfetch(result)))
{
zbx_jsonpath_t path;
if (SUCCEED != (ret = zbx_jsonpath_compile(row[1], &path)))
{
*error = zbx_dsprintf(*error, "Cannot process LLD macro \"%s\": %s.\n", row[0],
zbx_json_strerror());
break;
}
zbx_jsonpath_clear(&path);
lld_macro_path = (zbx_lld_macro_path_t *)zbx_malloc(NULL, sizeof(zbx_lld_macro_path_t));
lld_macro_path->lld_macro = zbx_strdup(NULL, row[0]);
lld_macro_path->path = zbx_strdup(NULL, row[1]);
zbx_vector_ptr_append(lld_macro_paths, lld_macro_path);
}
DBfree_result(result);
zbx_vector_ptr_sort(lld_macro_paths, zbx_lld_macro_paths_compare);
zabbix_log(LOG_LEVEL_DEBUG, "End of %s():%s", __func__, zbx_result_string(ret));
return ret;
}
/******************************************************************************
* *
* Purpose: release resources allocated by lld macro path *
* *
* Parameters: lld_macro_path - [IN] json path to extract from lld_row *
* *
******************************************************************************/
void zbx_lld_macro_path_free(zbx_lld_macro_path_t *lld_macro_path)
{
zbx_free(lld_macro_path->path);
zbx_free(lld_macro_path->lld_macro);
zbx_free(lld_macro_path);
}
/******************************************************************************
* *
* Purpose: get value of LLD macro using json path if available or by *
* searching for such key in key value pairs of array entry *
* *
* Parameters: jp_row - [IN] the lld data row *
* lld_macro_paths - [IN] use json path to extract from jp_row *
* macro - [IN] LLD macro *
* value - [OUT] value extracted from jp_row *
* *
******************************************************************************/
int zbx_lld_macro_value_by_name(const struct zbx_json_parse *jp_row, const zbx_vector_ptr_t *lld_macro_paths,
const char *macro, char **value)
{
zbx_lld_macro_path_t lld_macro_path_local, *lld_macro_path;
int index;
size_t value_alloc = 0;
zbx_json_type_t type;
lld_macro_path_local.lld_macro = (char *)macro;
if (FAIL != (index = zbx_vector_ptr_bsearch(lld_macro_paths, &lld_macro_path_local,
zbx_lld_macro_paths_compare)))
{
lld_macro_path = (zbx_lld_macro_path_t *)lld_macro_paths->values[index];
if (SUCCEED == zbx_jsonpath_query(jp_row, lld_macro_path->path, value) && NULL != *value)
return SUCCEED;
return FAIL;
}
if (FAIL != (zbx_json_value_by_name_dyn(jp_row, macro, value, &value_alloc, &type)) &&
ZBX_JSON_TYPE_NULL != type)
return SUCCEED;
return FAIL;
}
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