$this->queue = new AMQPQueue($this->channel);
$this->queue->setFlags(AMQP_EXCLUSIVE);
$this->queue->declareQueue();
$this->callbackQueueName = $this->queue->getName();
//Set Publish Attributes
$attributes = array('correlation_id' => $this->corrId, 'reply_to' => $this->callbackQueueName);
$this->exchange->publish($value, $this->rpcQueue, AMQP_NOPARAM, $attributes);
$callback = function (AMQPEnvelope $message, AMQPQueue $q) {
if ($message->getCorrelationId() == $this->corrId) {
//echo sprintf("CorrelationID: %s",$message->getCorrelationId()), PHP_EOL;
//echo sprintf("Response: %s",$message->getBody()), PHP_EOL;
$this->response = $message->getBody();
$q->nack($message->getDeliveryTag());
return false;
}
};
$this->queue->consume($callback);
//Return RPC Results
return $this->response;
} catch (AMQPQueueException $ex) {
print_r($ex);
} catch (Exception $ex) {
print_r($ex);
}
}
}
$value = isset($argv[1]) ? $argv[1] : 5;
$fibonacciRpc = new FibonacciRpcClient();
echo sprintf(" [x] Requesting fib(%s)", $value), PHP_EOL;
$response = $fibonacciRpc->call($value);
echo sprintf(" [.] Received: %s", $response), PHP_EOL;
private $callback_queue;
private $response;
private $corr_id;
public function __construct()
{
$this->connection = new AMQPConnection('localhost', 5672, 'guest', 'guest');
$this->channel = $this->connection->channel();
list($this->callback_queue, , ) = $this->channel->queue_declare("", false, false, true, false);
$this->channel->basic_consume($this->callback_queue, '', false, false, false, false, array($this, 'on_response'));
}
public function on_response($rep)
{
if ($rep->properties['correlation_id'] == $this->corr_id) {
$this->response = $rep->body;
}
}
public function call($n)
{
$this->response = null;
$this->corr_id = uniqid();
$msg = new AMQPMessage((string) $n, array('correlation_id' => $this->corr_id, 'reply_to' => $this->callback_queue));
$this->channel->basic_publish($msg, '', 'rpc_queue');
while (!$this->response) {
$this->channel->wait();
}
return intval($this->response);
}
}
$fibonacci_rpc = new FibonacciRpcClient();
$response = $fibonacci_rpc->call(30);
echo " [.] Got ", $response, "\n";
$this->channel->basic_consume($this->callback_queue, '', false, false, false, false, [$this, 'on_response']);
}
/**
* @param AMQPMessage $rep
*/
public function on_response(AMQPMessage $rep)
{
if ($rep->get('correlation_id') == $this->corr_id) {
$this->response = $rep->body;
}
}
/**
* @param $n
* @return int
*/
public function call($n)
{
$this->response = null;
$this->corr_id = uniqid();
$msg = new AMQPMessage((string) $n, ['correlation_id' => $this->corr_id, 'reply_to' => $this->callback_queue]);
$this->channel->basic_publish($msg, '', 'rpc_queue');
while (!$this->response) {
$this->channel->wait();
}
return intval($this->response);
}
}
$fibonacci_rpc = new FibonacciRpcClient();
$number = isset($argv[1]) ? $argv[1] : 30;
$response = $fibonacci_rpc->call($number);
echo " [.] Got ", $response, "\n";
