/**
* Handles the heartbeat response from the worker handler.
*/
private function handleHeartbeatResponse()
{
$state = $this->worker->getState();
if (Worker::BUSY == $state) {
/**
* We should only reply in the following cases:
* - A heartbeat is about to expire.
* - We have a result.
*/
return;
}
if (Worker::RESULT_AVAILABLE == $state) {
// A result is available send it to the worker handler.
$this->handleResult();
return;
}
if (in_array($state, array(Worker::READY, Worker::RESULT, Worker::REGISTER))) {
// Update the state to ready and forget about the last job.
$this->worker->cleanup();
// Request a new job
$this->sendToWorkerHandler(new GetJobRequest());
return;
}
if (Worker::SHUTDOWN != $state) {
// The worker did not request a shutdown, however all other states should be handled at this point.
$this->getLogger()->error('Invalid worker state: ' . $this->worker->getState() . '.');
}
// Worker is completely shutdown, because there is no open connection to the worker handler.
$this->worker->setState(Worker::INVALID);
}
