146 lines
		
	
	
	
		
			3.8 KiB
		
	
	
	
		
			PHP
		
	
	
	
	
	
			
		
		
	
	
			146 lines
		
	
	
	
		
			3.8 KiB
		
	
	
	
		
			PHP
		
	
	
	
	
	
<?php
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if (!file_exists("boot.php") AND (sizeof($_SERVER["argv"]) != 0)) {
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	$directory = dirname($_SERVER["argv"][0]);
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	if (substr($directory, 0, 1) != "/")
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		$directory = $_SERVER["PWD"]."/".$directory;
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	$directory = realpath($directory."/..");
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	chdir($directory);
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}
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require_once("boot.php");
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function poller_run(&$argv, &$argc){
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	global $a, $db;
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	if(is_null($a)) {
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		$a = new App;
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	}
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	if(is_null($db)) {
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		@include(".htconfig.php");
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		require_once("include/dba.php");
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		$db = new dba($db_host, $db_user, $db_pass, $db_data);
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		unset($db_host, $db_user, $db_pass, $db_data);
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	};
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	if(function_exists('sys_getloadavg')) {
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		$maxsysload = intval(get_config('system','maxloadavg'));
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		if($maxsysload < 1)
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			$maxsysload = 50;
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		$load = sys_getloadavg();
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		if(intval($load[0]) > $maxsysload) {
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			logger('system: load ' . $load[0] . ' too high. poller deferred to next scheduled run.');
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			return;
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		}
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	}
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	if(($argc <= 1) OR ($argv[1] != "no_cron")) {
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		// Run the cron job that calls all other jobs
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		proc_run("php","include/cron.php");
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		// Run the cronhooks job separately from cron for being able to use a different timing
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		proc_run("php","include/cronhooks.php");
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		// Cleaning dead processes
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		$r = q("SELECT DISTINCT(`pid`) FROM `workerqueue` WHERE `executed` != '0000-00-00 00:00:00'");
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		foreach($r AS $pid)
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			if (!posix_kill($pid["pid"], 0))
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				q("UPDATE `workerqueue` SET `executed` = '0000-00-00 00:00:00', `pid` = 0 WHERE `pid` = %d",
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					intval($pid["pid"]));
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	} else
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		// Sleep two seconds before checking for running processes to avoid having too many workers
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		sleep(4);
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	// Checking number of workers
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	if (poller_too_much_workers())
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		return;
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	$starttime = time();
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	while ($r = q("SELECT * FROM `workerqueue` WHERE `executed` = '0000-00-00 00:00:00' ORDER BY `created` LIMIT 1")) {
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		// Quit the poller once every hour
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		if (time() > ($starttime + 3600))
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			return;
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		// Count active workers and compare them with a maximum value that depends on the load
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		if (poller_too_much_workers())
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			return;
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		q("UPDATE `workerqueue` SET `executed` = '%s', `pid` = %d WHERE `id` = %d",
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			dbesc(datetime_convert()),
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			intval(getmypid()),
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			intval($r[0]["id"]));
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		$argv = json_decode($r[0]["parameter"]);
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		$argc = count($argv);
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		// Check for existance and validity of the include file
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		$include = $argv[0];
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		if (!validate_include($include)) {
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			logger("Include file ".$argv[0]." is not valid!");
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			q("DELETE FROM `workerqueue` WHERE `id` = %d", intval($r[0]["id"]));
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			continue;
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		}
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		require_once($include);
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		$funcname=str_replace(".php", "", basename($argv[0]))."_run";
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		if (function_exists($funcname)) {
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			logger("Process ".getmypid().": ".$funcname." ".$r[0]["parameter"]);
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			$funcname($argv, $argc);
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			logger("Process ".getmypid().": ".$funcname." - done");
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			q("DELETE FROM `workerqueue` WHERE `id` = %d", intval($r[0]["id"]));
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		} else
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			logger("Function ".$funcname." does not exist");
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	}
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}
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function poller_too_much_workers() {
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	$queues = get_config("system", "worker_queues");
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	if ($queues == 0)
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		$queues = 4;
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	$active = poller_active_workers();
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	// Decrease the number of workers at higher load
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	if(function_exists('sys_getloadavg')) {
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		$load = max(sys_getloadavg());
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		$maxsysload = intval(get_config('system','maxloadavg'));
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		if($maxsysload < 1)
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			$maxsysload = 50;
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		$queues = max(0, ceil($queues * (($maxsysload - $load) / $maxsysload)));
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		logger("Current load: ".$load." - maximum: ".$maxsysload." - current queues: ".$active." - maximum: ".$queues, LOGGER_DEBUG);
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	}
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	return($active >= $queues);
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}
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function poller_active_workers() {
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	$workers = q("SELECT COUNT(*) AS `workers` FROM `workerqueue` WHERE `executed` != '0000-00-00 00:00:00'");
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	return($workers[0]["workers"]);
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}
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if (array_search(__file__,get_included_files())===0){
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  poller_run($_SERVER["argv"],$_SERVER["argc"]);
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  killme();
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}
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?>
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