return fib(n - 1) + fib(n - 2);
}
public static void main(String[] argv) {
Connection connection = null;
Channel channel = null;
try {
ConnectionFactory factory = new ConnectionFactory();
factory.setHost("localhost");
connection = factory.newConnection();
channel = connection.createChannel();
channel.queueDeclare(RPC_QUEUE_NAME, false, false, false, null);
channel.basicQos(1);
QueueingConsumer consumer = new QueueingConsumer(channel);
channel.basicConsume(RPC_QUEUE_NAME, false, consumer);
System.out.println(" [x] Awaiting RPC requests");
while (true) {
String response = null;
QueueingConsumer.Delivery delivery = consumer.nextDelivery();
BasicProperties props = delivery.getProperties();
BasicProperties replyProps = new BasicProperties.Builder()
.correlationId(props.getCorrelationId()).build();
try {
String message = new String(delivery.getBody(), "UTF-8");
int n = Integer.parseInt(message);
System.out.println(" [.] fib(" + message + ")");
response = "" + fib(n);
} catch (Exception e) {
System.out.println(" [.] " + e.toString());
response = "";
} finally {
channel.basicPublish("", props.getReplyTo(), replyProps,
response.getBytes("UTF-8"));
channel.basicAck(delivery.getEnvelope().getDeliveryTag(),
false);
}
}
} catch (Exception e) {
e.printStackTrace();