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<?php
/**
* Bitrix Framework
* @package bitrix
* @subpackage main
* @copyright 2001-2023 Bitrix
*/
class CAgent extends CAllAgent
{
public static function CheckAgents()
{
define("START_EXEC_AGENTS_1", microtime(true));
define("BX_CHECK_AGENT_START", true);
//For a while agents will execute only on primary cluster group
if((defined("NO_AGENT_CHECK") && NO_AGENT_CHECK===true) || (defined("BX_CLUSTER_GROUP") && BX_CLUSTER_GROUP !== 1))
return null;
$res = CAgent::ExecuteAgents();
define("START_EXEC_AGENTS_2", microtime(true));
return $res;
}
public static function ExecuteAgents()
{
global $DB, $CACHE_MANAGER, $pPERIOD;
$cron = static::OnCron();
if ($cron !== null)
{
$str_crontab = ($cron ? " AND IS_PERIOD='N' " : " AND IS_PERIOD='Y' ");
}
else
{
$str_crontab = "";
}
$saved_time = 0;
$cache_id = "agents".$str_crontab;
if (CACHED_b_agent !== false && $CACHE_MANAGER->Read(CACHED_b_agent, $cache_id, "agents"))
{
$saved_time = $CACHE_MANAGER->Get($cache_id);
if (time() < $saved_time)
{
return "";
}
}
$connection = \Bitrix\Main\Application::getConnection();
$helper = $connection->getSqlHelper();
$strSql = "
SELECT 'x'
FROM b_agent
WHERE
ACTIVE = 'Y'
AND NEXT_EXEC <= " . $helper->getCurrentDateTimeFunction() . "
AND (DATE_CHECK IS NULL OR DATE_CHECK <= " . $helper->getCurrentDateTimeFunction() . ")
".$str_crontab."
LIMIT 1
";
$db_result_agents = $DB->Query($strSql);
if ($db_result_agents->Fetch())
{
if(!$connection->lock('agent'))
{
return "";
}
}
else
{
if (CACHED_b_agent !== false)
{
$rs = $DB->Query("SELECT UNIX_TIMESTAMP(NEXT_EXEC)-UNIX_TIMESTAMP(" . $helper->getCurrentDateTimeFunction() . ") DATE_DIFF FROM b_agent WHERE ACTIVE = 'Y' " . $str_crontab . " ORDER BY NEXT_EXEC LIMIT 1");
$ar = $rs->Fetch();
if (!$ar || $ar["DATE_DIFF"] < 0)
$date_diff = 0;
elseif ($ar["DATE_DIFF"] > CACHED_b_agent)
$date_diff = CACHED_b_agent;
else
$date_diff = $ar["DATE_DIFF"];
if ($saved_time > 0)
{
$CACHE_MANAGER->Clean($cache_id, "agents");
$CACHE_MANAGER->Read(CACHED_b_agent, $cache_id, "agents");
}
$CACHE_MANAGER->Set($cache_id, intval(time()+$date_diff));
}
return "";
}
$strSql =
"SELECT ID, NAME, AGENT_INTERVAL, IS_PERIOD, MODULE_ID, RETRY_COUNT ".
"FROM b_agent ".
"WHERE ACTIVE = 'Y' ".
" AND NEXT_EXEC <= " . $helper->getCurrentDateTimeFunction() . " ".
" AND (DATE_CHECK IS NULL OR DATE_CHECK <= " . $helper->getCurrentDateTimeFunction() . ") ".
$str_crontab.
" ORDER BY RUNNING ASC, SORT desc ";
// limit selection to prevent excessive UPDATE
$limit = ($cron ? COption::GetOptionInt("main", "agents_cron_limit", 1000) : COption::GetOptionInt("main", "agents_limit", 100));
if ($limit > 0)
{
$strSql .= ' LIMIT ' . $limit;
}
$db_result_agents = $DB->Query($strSql);
$ids = '';
$agents_array = array();
while ($db_result_agents_array = $db_result_agents->Fetch())
{
$agents_array[] = $db_result_agents_array;
$ids .= ($ids <> ''? ', ':'').$db_result_agents_array["ID"];
}
if ($ids <> '')
{
$strSql = "UPDATE b_agent SET DATE_CHECK = " . $helper->addSecondsToDateTime(self::LOCK_TIME) . " WHERE ID IN (".$ids.")";
$DB->Query($strSql);
}
$connection->unlock('agent');
/** @var callable|false $logFunction */
$logFunction = (defined("BX_AGENTS_LOG_FUNCTION") && function_exists(BX_AGENTS_LOG_FUNCTION)? BX_AGENTS_LOG_FUNCTION : false);
ignore_user_abort(true);
$startTime = time();
foreach ($agents_array as $arAgent)
{
if (time() - $startTime > self::LOCK_TIME - 30)
{
// locking time control; 30 seconds delta is for the possibly last agent
break;
}
if ($logFunction)
{
$logFunction($arAgent, "start");
}
if ($arAgent["MODULE_ID"] <> '' && $arAgent["MODULE_ID"]!="main")
{
if (!CModule::IncludeModule($arAgent["MODULE_ID"]))
continue;
}
//update the agent to the running state - if it fails it'll go to the end of the list on the next try
$DB->Query("UPDATE b_agent SET RUNNING = 'Y', RETRY_COUNT = RETRY_COUNT+1 WHERE ID = ".$arAgent["ID"]);
//these vars can be assigned within agent code
$pPERIOD = $arAgent["AGENT_INTERVAL"];
CTimeZone::Disable();
$USER = null;
try
{
$eval_result = "";
$e = eval("\$eval_result=".$arAgent["NAME"]);
}
catch (Throwable $e)
{
CTimeZone::Enable();
$application = \Bitrix\Main\Application::getInstance();
$exceptionHandler = $application->getExceptionHandler();
$exceptionHandler->writeToLog($e);
continue;
}
CTimeZone::Enable();
if ($logFunction)
{
$logFunction($arAgent, "finish", $eval_result, $e);
}
if ($e === false)
{
continue;
}
elseif ($eval_result == '')
{
$strSql = "DELETE FROM b_agent WHERE ID = ".$arAgent["ID"];
}
else
{
if ($logFunction && function_exists('token_get_all'))
{
if (count(token_get_all("<?php ".$eval_result)) < 3)
{
//probably there is an error in the result
$logFunction($arAgent, "not_callable", $eval_result, $e);
}
}
$strSql = "
UPDATE b_agent SET
NAME = '".$DB->ForSQL($eval_result)."',
LAST_EXEC = " . $helper->getCurrentDateTimeFunction() . ",
NEXT_EXEC = " . $helper->addSecondsToDateTime($pPERIOD, $arAgent["IS_PERIOD"]=="Y"? "NEXT_EXEC" : null) . ",
DATE_CHECK = NULL,
RUNNING = 'N',
RETRY_COUNT = 0
WHERE ID = ".$arAgent["ID"];
}
$DB->Query($strSql);
}
return null;
}
}