public function lock($status = BACKGROUND_PROCESS_STATUS_LOCKED)
{
// Preliminary select to avoid unnecessary write-attempt
if (background_process_get_process($this->handle)) {
// watchdog('bg_process', 'Will not attempt to lock handle %handle, already exists', array('%handle' => $this->handle), WATCHDOG_NOTICE);
return FALSE;
}
// "Lock" handle
$this->start_stamp = $this->start = microtime(TRUE);
if (!background_process_lock_process($this->handle, $status)) {
// If this happens, we might have a race condition or an md5 clash
watchdog('bg_process', 'Could not lock handle %handle', array('%handle' => $this->handle), WATCHDOG_ERROR);
return FALSE;
}
$this->exec_status = $this->status = BACKGROUND_PROCESS_STATUS_LOCKED;
$this->sendMessage('locked');
return TRUE;
}
/**
* Background Process legacy callback for running cron jobs.
*
* @param string $name
* The name of the job.
* @param string $lock_id
* The lock id.
*/
public static function job_callback($name, $lock_id, $recheck = FALSE)
{
$job = _ultimate_cron_job_load($name);
$log_entry = $job->resumeLog($lock_id);
// If set, $recheck contains the timestamp of the last schedule check.
if ($recheck) {
// Simulate schedule check by setting a mock log entry object with the
// recheck timestamp.
$job->log_entry = $job->getPlugin('logger')->factoryLogEntry($job->name);
$job->log_entry->start_time = $recheck;
// Now we can check the scheduler.
if (!$job->getPlugin('scheduler')->isScheduled($job)) {
watchdog('bgpl_launcher', 'Recheck failed at @time', array('@time' => format_date(time(), 'custom', 'Y-m-d H:i:s')), WATCHDOG_ERROR);
$job->sendSignal('background_process_legacy_dont_log');
$log_entry->finish();
$job->unlock($lock_id);
return;
}
unset($job->log_entry);
}
// Run job.
try {
if ($job->getPlugin('launcher')->name != 'background_process_legacy') {
// Launcher has changed, end job/daemon.
$log_entry->finish();
$job->unlock($lock_id);
return;
}
$settings = $job->getSettings('launcher');
if ($settings['daemonize']) {
$keepalive = TRUE;
$expire = microtime(TRUE) + (double) $settings['daemonize_interval'];
do {
$job->run();
if ($settings['daemonize_delay']) {
usleep((double) $settings['daemonize_delay'] * 1000000);
}
if ($job->getSignal('end_daemonize')) {
watchdog('bgpl_launcher', 'end daemonize signal received', array(), WATCHDOG_NOTICE);
$keepalive = FALSE;
break;
}
} while (microtime(TRUE) < $expire);
// Refresh disabled value.
$job = _ultimate_cron_job_load($name, TRUE);
$settings = $job->getSettings('launcher');
$keepalive &= empty($job->disabled);
$keepalive &= !empty($settings['daemonize']);
$keepalive &= !$job->getSignal('end_daemonize');
if ($keepalive) {
// Make sure recheck isn't kept alive, as this does not make
// any sense.
background_process_keepalive($name, $lock_id);
// Save a copy of the log.
$log_entry->lid = $lock_id . '-' . uniqid('', TRUE);
$job->sendSignal('background_process_legacy_dont_log');
$log_entry->finish();
// Restart log for keepalive.
$log_entry->lid = $lock_id;
$handle = background_process_current_handle();
$process = background_process_get_process($handle);
$log_entry->init_message = t('Re-launched at service host @name', array('@name' => $process->service_host));
$log_entry->message = '';
$log_entry->end_time = 0;
$log_entry->start_time = microtime(TRUE);
$log_entry->save();
} else {
$job->sendSignal('background_process_legacy_dont_log');
$log_entry->finish();
$job->unlock($lock_id);
}
} else {
$job->run();
$job->sendSignal('background_process_legacy_dont_log');
$log_entry->finish();
$job->unlock($lock_id);
}
} catch (Throwable $e) {
watchdog('bgpl_launcher', 'Error executing %job: @error', array('%job' => $job->name, '@error' => (string) $e), WATCHDOG_ERROR);
$job->sendSignal('background_process_legacy_dont_log');
$log_entry->finish();
$job->unlock($lock_id);
} catch (Exception $e) {
watchdog('bgpl_launcher', 'Error executing %job: @error', array('%job' => $job->name, '@error' => (string) $e), WATCHDOG_ERROR);
$job->sendSignal('background_process_legacy_dont_log');
$log_entry->finish();
$job->unlock($lock_id);
}
}
