/**
*
* @param TimerInterface $timer
*
* @return MessageInterface
*
* @throws TimeoutException
*/
public function read(TimerInterface $timer = null)
{
$timer = $timer ?: $this->defaultTimer;
$timeout = $timer->timeout();
if (!$this->socket->hasEvents($timeout)) {
throw new TimeoutException('Timeout: ' . $timeout . '.');
}
// Read the raw message.
$msg = $this->socket->mrecv();
// Dispatch the event.
$event = $this->createEvent($msg);
$this->dispatch(StreamInterface::MESSAGE, $event);
// Dispatch the new message.
return $event->getProtocolMessage();
}
/**
*
* @param Socket $socket
*
* @return Service
* @throws RuntimeException
*/
public function createStream(Socket $socket)
{
if ($socket->getSocketType() != ZMQ::SOCKET_REP) {
throw new RuntimeException('Invalid socket type.');
}
$this->getPoller()->add($socket, ZMQ::POLL_IN);
$stream = $socket->getStream();
$callback = array($this, 'onWorkerMessage');
$stream->addListener(StreamInterface::MESSAGE, function (MessageEvent $event) use($callback) {
call_user_func($callback, $event->getProtocolMessage());
});
$this->stream = $stream;
return $this;
}
/**
*
* @param string $manager
*
* @return Socket
*/
protected function getSocket($manager)
{
$context = new ZMQContext();
$socket = Socket::create($context, ZMQ::SOCKET_REQ, $this->logger);
$socket->connect($manager);
return $socket;
}
/**
* Returns a socket for the given server.
*
* If the socket does not yet exist, it is created.
*
* @param string $server
*
* @return Socket
*/
protected function getSocket($server)
{
if (isset($this->socket[$server])) {
return $this->socket[$server];
}
$context = new ZMQContext();
$socket = Socket::create($context, ZMQ::SOCKET_REQ, $this->logger);
$socket->connect($server);
$this->socket[$server] = $socket;
return $socket;
}
/**
* Creates a socket.
*
* @param int $type
* @param string $mode
* @param string $dsn
* @param array $options
*
* @return Socket
*/
protected function createSocket($type, $mode, $dsn = null, $options = array())
{
$context = $this->getContext();
$socket = new Socket($context, $type);
$options = $this->options + $options;
foreach ($options as $key => $value) {
$socket->setSockOpt($key, $value);
}
$this->connect($socket, $mode, $dsn);
return $socket;
}
/**
* Creates a socket to communicate with the service.
*
* @param Socket $socket
*
* @return null
*/
protected function createServiceStream(Socket $socket)
{
$socket->setId('worker_service');
$this->getPoller()->add($socket, ZMQ::POLL_IN);
$that = $this;
$this->serviceStream = $socket->getStream();
$this->serviceStream->addListener(StreamInterface::MESSAGE, function (MessageEvent $event) use($that) {
if (null === $event->getProtocolMessage()) {
$message = $event->getMessage();
$that->getLogger()->error('Non-protocol message detected in service stream: ' . $message);
return;
}
$that->onServiceMessage($event->getProtocolMessage());
});
}