public static function lock($jobName)
{
$lockFile = LOCK_DIR . $jobName . LOCK_SUFFIX;
if (file_exists($lockFile)) {
// Is running?
self::$pid = file_get_contents($lockFile);
if (self::isRunning()) {
error_log("==" . self::$pid . "== Already in progress...");
return FALSE;
} else {
error_log("==" . self::$pid . "== Previous job died abruptly...");
}
}
self::$pid = getmypid();
file_put_contents($lockFile, self::$pid);
error_log("==" . self::$pid . "== Lock acquired, processing the job...");
return self::$pid;
}
/**
* Dispatches the cron jobs
*
* @param int $
*/
public function dispatch($jobKey = null)
{
$register = new Ot_Cron_JobRegister();
$cs = new Ot_Model_DbTable_CronStatus();
if (!is_null($jobKey)) {
$thisJob = $register->getJob($jobKey);
if (is_null($jobKey)) {
throw new Exception('Job not found');
}
if (!$cs->isEnabled($thisJob->getKey())) {
throw new Ot_Exception('Job is disabled and cannot be run');
}
$lastRunDt = $cs->getLastRunDt($thisJob->getKey());
$jobObj = $thisJob->getJobObj();
// make sure job isn't already running
if (($pid = Ot_Cron_Lock::lock($thisJob->getKey())) == FALSE) {
return;
}
$jobObj->execute($lastRunDt);
Ot_Cron_Lock::unlock($thisJob->getKey());
$cs->executed($thisJob->getKey(), time());
return;
}
$now = time();
$jobs = $register->getJobs();
foreach ($jobs as $job) {
if ($this->shouldExecute($job->getSchedule(), $now)) {
if (!$cs->isEnabled($job->getKey())) {
continue;
}
$lastRunDt = $cs->getLastRunDt($job->getKey());
$jobObj = $job->getJobObj();
if (($pid = Ot_Cron_Lock::lock($job->getKey())) == FALSE) {
continue;
}
$jobObj->execute($lastRunDt);
Ot_Cron_Lock::unlock($job->getKey());
$cs->executed($job->getKey(), time());
}
}
}