| /* |
| * |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you under the Apache License, Version 2.0 (the |
| * "License"); you may not use this file except in compliance |
| * with the License. You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, |
| * software distributed under the License is distributed on an |
| * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY |
| * KIND, either express or implied. See the License for the |
| * specific language governing permissions and limitations |
| * under the License. |
| * |
| */ |
| package org.apache.qpid.proton.examples; |
| |
| import org.apache.qpid.proton.amqp.messaging.Accepted; |
| import org.apache.qpid.proton.engine.BaseHandler; |
| import org.apache.qpid.proton.engine.Collector; |
| import org.apache.qpid.proton.engine.Delivery; |
| import org.apache.qpid.proton.engine.Event; |
| import org.apache.qpid.proton.engine.Link; |
| import org.apache.qpid.proton.engine.Receiver; |
| import org.apache.qpid.proton.engine.Sender; |
| |
| import java.io.IOException; |
| |
| import java.util.ArrayDeque; |
| import java.util.ArrayList; |
| import java.util.Deque; |
| import java.util.HashMap; |
| import java.util.List; |
| import java.util.Map; |
| |
| /** |
| * Server |
| * |
| */ |
| |
| public class Server extends BaseHandler |
| { |
| |
| private class MessageStore { |
| |
| Map<String,Deque<Message>> messages = new HashMap<String,Deque<Message>>(); |
| |
| void put(String address, Message message) { |
| Deque<Message> queue = messages.get(address); |
| if (queue == null) { |
| queue = new ArrayDeque<Message>(); |
| messages.put(address, queue); |
| } |
| queue.add(message); |
| } |
| |
| Message get(String address) { |
| Deque<Message> queue = messages.get(address); |
| if (queue == null) { return null; } |
| Message msg = queue.remove(); |
| if (queue.isEmpty()) { |
| messages.remove(address); |
| } |
| return msg; |
| } |
| |
| } |
| |
| final private MessageStore messages = new MessageStore(); |
| final private Router router; |
| private boolean quiet; |
| private int tag = 0; |
| |
| public Server(Router router, boolean quiet) { |
| this.router = router; |
| this.quiet = quiet; |
| } |
| |
| private byte[] nextTag() { |
| return String.format("%s", tag++).getBytes(); |
| } |
| |
| private int send(String address) { |
| return send(address, null); |
| } |
| |
| private int send(String address, Sender snd) { |
| if (snd == null) { |
| Router.Routes<Sender> routes = router.getOutgoing(address); |
| snd = routes.choose(); |
| if (snd == null) { |
| return 0; |
| } |
| } |
| |
| int count = 0; |
| while (snd.getCredit() > 0 && snd.getQueued() < 1024) { |
| Message msg = messages.get(address); |
| if (msg == null) { |
| snd.drained(); |
| return count; |
| } |
| Delivery dlv = snd.delivery(nextTag()); |
| byte[] bytes = msg.getBytes(); |
| snd.send(bytes, 0, bytes.length); |
| dlv.settle(); |
| count++; |
| if (!quiet) { |
| System.out.println(String.format("Sent message(%s): %s", address, msg)); |
| } |
| } |
| |
| return count; |
| } |
| |
| @Override |
| public void onLinkFlow(Event evt) { |
| Link link = evt.getLink(); |
| if (link instanceof Sender) { |
| Sender snd = (Sender) link; |
| send(router.getAddress(snd), snd); |
| } |
| } |
| |
| @Override |
| public void onDelivery(Event evt) { |
| Delivery dlv = evt.getDelivery(); |
| Link link = dlv.getLink(); |
| if (link instanceof Sender) { |
| dlv.settle(); |
| } else { |
| Receiver rcv = (Receiver) link; |
| if (!dlv.isPartial()) { |
| byte[] bytes = new byte[dlv.pending()]; |
| rcv.recv(bytes, 0, bytes.length); |
| String address = router.getAddress(rcv); |
| Message message = new Message(bytes); |
| messages.put(address, message); |
| dlv.disposition(Accepted.getInstance()); |
| dlv.settle(); |
| if (!quiet) { |
| System.out.println(String.format("Got message(%s): %s", address, message)); |
| } |
| send(address); |
| } |
| } |
| } |
| |
| public static final void main(String[] argv) throws IOException { |
| List<String> switches = new ArrayList<String>(); |
| List<String> args = new ArrayList<String>(); |
| for (String s : argv) { |
| if (s.startsWith("-")) { |
| switches.add(s); |
| } else { |
| args.add(s); |
| } |
| } |
| |
| boolean quiet = switches.contains("-q"); |
| String host = !args.isEmpty() && !Character.isDigit(args.get(0).charAt(0)) ? |
| args.remove(0) : "localhost"; |
| int port = !args.isEmpty() ? Integer.parseInt(args.remove(0)) : 5672; |
| |
| Collector collector = Collector.Factory.create(); |
| Router router = new Router(); |
| Driver driver = new Driver(collector, new Handshaker(), |
| new FlowController(1024), router, |
| new Server(router, quiet)); |
| driver.listen(host, port); |
| driver.run(); |
| } |
| |
| } |