1 // ========================================================================
2 // Copyright 2006 Mort Bay Consulting Pty. Ltd.
3 // ------------------------------------------------------------------------
4 // Licensed under the Apache License, Version 2.0 (the "License");
5 // you may not use this file except in compliance with the License.
6 // You may obtain a copy of the License at
7 // http://www.apache.org/licenses/LICENSE-2.0
8 // Unless required by applicable law or agreed to in writing, software
9 // distributed under the License is distributed on an "AS IS" BASIS,
10 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
11 // See the License for the specific language governing permissions and
12 // limitations under the License.
13 //========================================================================
14
15 package org.mortbay.cometd.continuation;
16
17 import java.util.Timer;
18 import java.util.TimerTask;
19
20 import javax.servlet.ServletContext;
21
22 import org.mortbay.cometd.AbstractBayeux;
23 import org.mortbay.cometd.ClientImpl;
24 import org.mortbay.thread.Timeout;
25 import org.mortbay.thread.Timeout.Task;
26
27 /* ------------------------------------------------------------ */
28 /**
29 * Extension of Bayeux that uses {@link ContinuationClient}s.
30 * @author gregw
31 * @deprecated use {@link org.mortbay.cometd.SuspendingBayeux}
32 *
33 */
34 public class ContinuationBayeux extends AbstractBayeux
35 {
36 private static int __id;
37 private transient Timer _tick;
38 private transient Timeout _timeout;
39 private long _now;
40
41
42 /* ------------------------------------------------------------ */
43 /* (non-Javadoc)
44 * @see org.mortbay.cometd.AbstractBayeux#newClient(java.lang.String, dojox.io.cometd.Destination)
45 */
46 @Override
47 public ClientImpl newRemoteClient()
48 {
49 return new ContinuationClient(this);
50 }
51
52 /* ------------------------------------------------------------ */
53 /* (non-Javadoc)
54 * @see org.mortbay.cometd.AbstractBayeux#initialize(javax.servlet.ServletContext)
55 */
56 @Override
57 protected void initialize(ServletContext context)
58 {
59 super.initialize(context);
60
61 _tick=new Timer("ContinuationBayeux-"+__id++, true);
62 _timeout=new Timeout();
63 _timeout.setDuration(getMaxInterval());
64
65 _tick.schedule(new TimerTask()
66 {
67 @Override
68 public void run()
69 {
70 _now=System.currentTimeMillis();
71 _timeout.tick(_now);
72 }
73 },500L,500L);
74 }
75
76 /* ------------------------------------------------------------ */
77 long getNow()
78 {
79 return _now;
80 }
81
82 /* ------------------------------------------------------------ */
83 @Override
84 public void setMaxInterval(long ms)
85 {
86 _timeout.setDuration(ms);
87 super.setMaxInterval(ms);
88 }
89
90 /* ------------------------------------------------------------ */
91 /* (non-Javadoc)
92 * @see org.mortbay.cometd.AbstractBayeux#initialize(javax.servlet.ServletContext)
93 */
94 public void destroy()
95 {
96 _tick.cancel();
97 }
98
99 /* ------------------------------------------------------------ */
100 void startTimeout(Task timeout,long delay)
101 {
102 if (delay==0)
103 _timeout.schedule(timeout);
104 else
105 _timeout.schedule(timeout,delay);
106 }
107
108 /* ------------------------------------------------------------ */
109 public void cancelTimeout(Task timeout)
110 {
111 if (timeout!=null)
112 timeout.cancel();
113 }
114
115 }