public function execute($callback, $args = array())
{
$this->callback = $callback;
$this->args = $args;
if (!background_process_set_process($this->handle, $this->callback, $this->uid, $this->args, $this->token)) {
// Could not update process
return NULL;
}
module_invoke_all('background_process_pre_execute', $this->handle, $this->callback, $this->args, $this->token);
// Initialize progress stats
$old_db = db_set_active('background_process');
progress_remove_progress($this->handle);
db_set_active($old_db);
$this->connection = FALSE;
$this->determineServiceHost();
return $this->dispatch();
}
/**
* Lock job.
*
* Background Process doesn't internally provide a unique id
* for the running process, so we'll have to add that ourselves.
* We store the unique lock id in the second callback argument.
*/
public function lock($job)
{
$handle = 'uc-' . $job->name;
$process = new BackgroundProcess($handle);
if (!$process->lock()) {
return FALSE;
}
$lock_id = $job->name . ':' . uniqid('bgpl', TRUE);
global $user;
background_process_set_process($process->handle, '__LOCKED__', $user->uid, array($job->name, $lock_id), $process->token);
return $lock_id;
}
