2 * The MIT License (MIT)
4 * Copyright (C) 2013 Jaroslav Tulach <jaroslav.tulach@apidesign.org>
6 * Permission is hereby granted, free of charge, to any person obtaining a copy
7 * of this software and associated documentation files (the "Software"), to deal
8 * in the Software without restriction, including without limitation the rights
9 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
10 * copies of the Software, and to permit persons to whom the Software is
11 * furnished to do so, subject to the following conditions:
13 * The above copyright notice and this permission notice shall be included in
14 * all copies or substantial portions of the Software.
16 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
17 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
18 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
19 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
20 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
21 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
24 package org.apidesign.demo.chat.server;
26 import java.io.ByteArrayInputStream;
27 import java.io.IOException;
28 import java.util.ArrayList;
29 import java.util.List;
30 import java.util.logging.Logger;
31 import net.java.html.BrwsrCtx;
32 import net.java.html.json.Models;
33 import org.apidesign.demo.chat.shared.Message;
34 import org.apidesign.demo.chat.shared.Query;
35 import org.glassfish.grizzly.websockets.WebSocket;
36 import org.glassfish.grizzly.websockets.WebSocketApplication;
38 /** Server side of the chat application.*/
39 public final class ChatServerResource extends WebSocketApplication {
40 private static final Logger LOG = Logger.getLogger(ChatServerResource.class.getName());
41 private static final long started = System.currentTimeMillis() - 10;
43 private List<Message> msgs = new ArrayList<>();
45 Message welcome = new Message();
46 welcome.setUser("system");
47 welcome.setComment("Welcome and enjoy!");
54 private final Map<AsyncResponse, Long> awaiting = new IdentityHashMap<>();
56 @Produces(MediaType.APPLICATION_JSON)
57 @GET public synchronized void getResources(
58 @QueryParam("since") @DefaultValue("0") long since,
59 @Suspended AsyncResponse ar
61 Query q = new Query();
62 for (Message m : msgs) {
63 if (m.getSince()>= since) {
64 q.getMessages().add(m);
67 if (!q.getMessages().isEmpty()) {
70 awaiting.put(ar, since);
74 private void handleAwaiting(long newest) {
75 assert Thread.holdsLock(this);
77 for (Map.Entry<AsyncResponse, Long> entry : awaiting.entrySet()) {
78 AsyncResponse ar = entry.getKey();
79 Long since = entry.getValue();
80 if (since <= newest) {
82 getResources(since, ar);
90 @POST @Consumes(value = MediaType.APPLICATION_JSON)
91 public synchronized Message publish(Message msg) {
92 msg.setSince(System.currentTimeMillis() - started);
94 handleAwaiting(msg.getSince());
100 public void onMessage(WebSocket socket, String text) {
102 ByteArrayInputStream is = new ByteArrayInputStream(text.getBytes("UTF-8"));
103 Query q = Models.parse(BrwsrCtx.findDefault(ChatServerResource.class), Query.class, is);
104 super.onMessage(socket, text);
105 } catch (IOException ex) {
106 throw new IllegalStateException(ex);