01: package org.tigris.scarab.notification;
02:
03: /* ================================================================
04: * Copyright (c) 2000-2005 CollabNet. All rights reserved.
05: *
06: * Redistribution and use in source and binary forms, with or without
07: * modification, are permitted provided that the following conditions are
08: * met:
09: *
10: * 1. Redistributions of source code must retain the above copyright
11: * notice, this list of conditions and the following disclaimer.
12: *
13: * 2. Redistributions in binary form must reproduce the above copyright
14: * notice, this list of conditions and the following disclaimer in the
15: * documentation and/or other materials provided with the distribution.
16: *
17: * 3. The end-user documentation included with the redistribution, if
18: * any, must include the following acknowlegement: "This product includes
19: * software developed by CollabNet <http://www.Collab.Net/>."
20: * Alternately, this acknowlegement may appear in the software itself, if
21: * and wherever such third-party acknowlegements normally appear.
22: *
23: * 4. The hosted project names must not be used to endorse or promote
24: * products derived from this software without prior written
25: * permission. For written permission, please contact info@collab.net.
26: *
27: * 5. Products derived from this software may not use the "Tigris" or
28: * "Scarab" names nor may "Tigris" or "Scarab" appear in their names without
29: * prior written permission of CollabNet.
30: *
31: * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
32: * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
33: * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
34: * IN NO EVENT SHALL COLLAB.NET OR ITS CONTRIBUTORS BE LIABLE FOR ANY
35: * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
36: * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE
37: * GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
38: * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER
39: * IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
40: * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
41: * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
42: *
43: * ====================================================================
44: *
45: * This software consists of voluntary contributions made by many
46: * individuals on behalf of CollabNet.
47: */
48:
49: import org.apache.log4j.Logger;
50: import org.quartz.JobExecutionContext;
51: import org.quartz.JobExecutionException;
52: import org.quartz.SchedulerException;
53: import org.quartz.Job;
54: import org.tigris.scarab.util.Log;
55:
56: /**
57: * Quartz's job implementation that will just call the NotificationManager
58: * to send pending notifications.<br/>
59: * In case the pending notification processal takes too much time and the
60: * scheduler fires it again, this class will allow just ONE execution to be
61: * queued, discarding other requests that arrive after it.<br/>
62: *
63: * @author jorgeuriarte
64: *
65: */
66: public class NotificationManagerJob implements Job {
67: public static Logger log = Log.get(NotificationManagerJob.class
68: .getName());
69:
70: /**
71: * Executes the process that send the pending notifications.
72: */
73: public void execute(JobExecutionContext jobContext)
74: throws JobExecutionException {
75: try {
76: if (jobContext.getScheduler().getCurrentlyExecutingJobs()
77: .size() > 2)
78: log
79: .info("Skipping call to NotificationManager.sendPendingNotifications because there's already once call waiting.");
80: else
81: NotificationManagerFactory.getInstance()
82: .sendPendingNotifications();
83: } catch (SchedulerException e) {
84: log.error("execute(): " + e);
85: }
86: }
87: }
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