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Java > Open Source Codes > org > mr > kernel > services > queues > QueueDispatcher


1 /*
2  * Copyright 2002 by
3  * <a HREF="http://www.coridan.com">Coridan</a>
4  * <a HREF="mailto: support@coridan.com ">support@coridan.com</a>
5  *
6  * The contents of this file are subject to the Mozilla Public License Version
7  * 1.1 (the "License"); you may not use this file except in compliance with the
8  * License. You may obtain a copy of the License at
9  * http://www.mozilla.org/MPL/
10  *
11  * Software distributed under the License is distributed on an "AS IS" basis,
12  * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
13  * for the specific language governing rights and limitations under the
14  * License.
15  *
16  * The Original Code is "MantaRay" (TM).
17  *
18  * The Initial Developer of the Original Code is Amir Shevat.
19  * Portions created by the Initial Developer are Copyright (C) 2006
20  * Coridan Inc. All Rights Reserved.
21  *
22  * Contributor(s): all the names of the contributors are added in the source
23  * code where applicable.
24  *
25  * Alternatively, the contents of this file may be used under the terms of the
26  * LGPL license (the "GNU LESSER GENERAL PUBLIC LICENSE"), in which case the
27  * provisions of LGPL are applicable instead of those above. If you wish to
28  * allow use of your version of this file only under the terms of the LGPL
29  * License and not to allow others to use your version of this file under
30  * the MPL, indicate your decision by deleting the provisions above and
31  * replace them with the notice and other provisions required by the LGPL.
32  * If you do not delete the provisions above, a recipient may use your version
33  * of this file under either the MPL or the GNU LESSER GENERAL PUBLIC LICENSE.
34  
35  *
36  * This library is free software; you can redistribute it and/or modify it
37  * under the terms of the MPL as stated above or under the terms of the GNU
38  * Lesser General Public License as published by the Free Software Foundation;
39  * either version 2.1 of the License, or any later version.
40  *
41  * This library is distributed in the hope that it will be useful, but WITHOUT
42  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
43  * FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public
44  * License for more details.
45  */
46 /*
47  * Created on Jan 19, 2004
48  * Manta LTD
49  */
50 package org.mr.kernel.services.queues;
51
52 import org.apache.commons.logging.Log;
53 import org.apache.commons.logging.LogFactory;
54
55 /**
56  * QueueDispatcher runs the logic of a queue (like a reactor)
57  * Created Jan 19, 2004
58  * Ver 1.0
59  * @author Amir Shevat
60  *
61  *
62  */
63 public class QueueDispatcher extends Thread JavaDoc {
64     
65     public static final String JavaDoc QUEUE_DISPATCHER_SLEEP_TIME_CONFIG_KEY = "agent.service.queue.dipatch_sleep";
66     
67     AbstractQueueService service;
68     private Log log;
69     private boolean stop = false;
70     
71     public QueueDispatcher(AbstractQueueService service){
72         this.service =service;
73         log=LogFactory.getLog("QueueDispatcher");
74     }
75     
76  
77     
78     public void run(){
79         //long time2sleep = MantaCoreComponent.getConfigManager().getLongProperty(QUEUE_DISPATCHER_SLEEP_TIME_CONFIG_KEY , 10);
80 this.setName("QueueDispatcher_4_"+service.getServiceName());
81         if(log.isDebugEnabled()){
82             log.debug("Starting QueueDispatcher, thread name QueueDispatcher_4_"+service.getServiceName());
83         }
84         while(service.isActive() && !stop){
85             try {
86                 service.doDequeue();
87             } catch (Exception JavaDoc e) {
88                 if(!stop){
89                      if(log.isErrorEnabled()){
90                         log.error("Error in queue dispatcher. " , e);
91                      }
92                 }else{
93                     break;
94                 }
95                
96             }
97         }//while
98 }//run
99
100     protected synchronized void stopIt() {
101         this.stop = true;
102         this.interrupt();
103     }
104 }
105
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