/**
  * get more ten lines
  * @param $data
  * @param ReaderInterface $reader
  * @return string
  */
 public function getErrorMessage($data, ReaderInterface $reader)
 {
     $message = $data;
     $max_line = 10;
     for ($i = 0; $i < $max_line; $i++) {
         $message .= $reader->read();
     }
     return $message;
 }
 protected function signalHandler($signal)
 {
     switch ($signal) {
         case SIGTERM:
             $this->reader->close();
             unset($this->reader);
             unset($this->filter);
             unset($this->notify);
             exit(0);
     }
 }