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<?php declare(strict_types = 0);
/*
** 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/>.
**/
/**
* Convert aggregate item key to calculated item function.
*/
class C52AggregateItemKeyConverter extends CConverter {
/**
* Item key parser instance.
*
* @var CItemKey
*/
protected $item_key_parser;
/**
* An options array.
*
* Supported options:
* 'lldmacros' => false Enable low-level discovery macros usage in time periods.
*
* @var array
*/
private $options = [
'lldmacros' => false
];
/**
* @param array $options
*/
public function __construct(array $options = []) {
$this->options = $options + $this->options;
$this->item_key_parser = new CItemKey();
}
/**
* Convert aggregate item key to calculated item syntax.
*
* @param string $value Item key.
*
* @return string Converted item key.
*/
public function convert($value) {
if ($this->item_key_parser->parse($value) != CParser::PARSE_SUCCESS) {
return $value;
}
$params = $this->item_key_parser->getParamsRaw();
$params = reset($params);
if (!$params || count($params['parameters']) < 2) {
return $value;
}
$params = $params['parameters'];
$host_groups = ($params[0]['type'] == CItemKey::PARAM_ARRAY) ? $params[0]['parameters'] : [$params[0]];
foreach ($host_groups as &$host_group) {
$host_group = ($host_group['type'] == CItemKey::PARAM_QUOTED)
? CItemKey::unquoteParam($host_group['raw'])
: $host_group['raw'];
$host_group = CFilterParser::quoteString($host_group);
}
unset($host_group);
$item_key = '/*/'.trim($this->item_key_parser->getParam(1)).'?[group='.implode(' or group=', $host_groups).']';
$func = $this->item_key_parser->getParam(2);
$func_foreach = $func.'_foreach';
$timeperiod = $func === 'last' ? null : $this->item_key_parser->getParam(3);
$new_value = substr($this->item_key_parser->getKey(), 3).'('.$func_foreach.'('.$item_key;
if ($timeperiod !== null) {
$timeperiod = trim($timeperiod);
if ($this->isQuotableTimeperiod($timeperiod)) {
$timeperiod = CHistFunctionParser::quoteParam($timeperiod, true, ['escape_backslashes' => false]);
}
$new_value .= ','.$timeperiod;
}
return $new_value.'))';
}
private function isQuotableTimeperiod(string $timeperiod): bool {
$number_parser = new CNumberParser([
'with_minus' => false,
'with_size_suffix' => true,
'with_time_suffix' => true
]);
if ($number_parser->parse($timeperiod) == CParser::PARSE_SUCCESS) {
return false;
}
$user_macro_parser = new CUserMacroParser();
if ($user_macro_parser->parse($timeperiod) == CParser::PARSE_SUCCESS) {
return false;
}
if ($this->options['lldmacros']) {
$lld_macro_parser = new CLLDMacroParser();
if ($lld_macro_parser->parse($timeperiod) == CParser::PARSE_SUCCESS) {
return false;
}
$lld_macro_function_parser = new CLLDMacroFunctionParser();
if ($lld_macro_function_parser->parse($timeperiod) == CParser::PARSE_SUCCESS) {
return false;
}
}
return true;
}
}
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