/**
* Returns value for server role loadbar (thermometr)
* @param $hostname
* @param $roleId
* @return bool|float
* @throws \Bitrix\Main\ArgumentNullException
* @throws \Exception
* @throws \Bitrix\Main\IO\FileNotFoundException
*/
public static function getLoadBarValue($hostname, $roleId)
{
if (!extension_loaded('rrd')) {
throw new \Exception("Extension rrd not loaded!");
}
if (strlen($hostname) <= 0) {
throw new \Bitrix\Main\ArgumentNullException("hostname");
}
if (strlen($roleId) <= 0) {
throw new \Bitrix\Main\ArgumentNullException("roleId");
}
$role = RolesData::getRole($roleId);
if (empty($role)) {
throw new \Exception("Role with id = " . $roleId . " was not defined.");
}
if (!isset($role["LOADBAR_INFO"]) || strlen($role["LOADBAR_INFO"]) <= 0) {
throw new \Exception("Role " . $roleId . " has no correctly defined LOADBAR_INFO param .");
}
$rrdFile = str_replace('##HOSTNAME##', $hostname, $role["LOADBAR_INFO"]);
$rrdPath = "/var/lib/munin/" . $hostname . "/" . $rrdFile;
$file = new \Bitrix\Main\IO\File($rrdPath);
if (!$file->isExists()) {
throw new \Bitrix\Main\IO\FileNotFoundException($rrdPath);
}
$data = \rrd_lastupdate($rrdPath);
$result = static::extractRrdValue($data);
return $result;
}
