/**
* Delete all expired sessions from persistent storage.
*
* @param int $expiration
* @return void
*/
public function sweep($expiration)
{
$expiration = Request::time() - Config::get('o_timeout_online');
// Fetch all sessions that are older than o_timeout_online
$result = $this->table()->where('user_id', '!=', 1)->where('last_visit', '<', $expiration)->get();
$delete_ids = array();
foreach ($result as $cur_session) {
$delete_ids[] = $cur_session->id;
$result = $this->connection->table('users')->where_id($cur_session->user_id)->update(array('last_visit' => $cur_session->last_visit));
}
// Make sure logged-in users have no more than ten sessions alive
if (Auth::check()) {
$uid = User::current()->id;
$session_ids = $this->table()->where_user_id($uid)->order_by('last_visit', 'desc')->lists('id');
$prune_ids = array_slice($session_ids, 10);
$delete_ids = array_merge($delete_ids, $prune_ids);
}
if (!empty($delete_ids)) {
$this->table()->where_in('id', $delete_ids)->or_where('last_visit', '<', $expiration)->delete();
}
}