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Java > Open Source Codes > org > mr > kernel > services > ServiceRecallShutdownHook


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 package org.mr.kernel.services;
47
48 import java.util.HashSet JavaDoc;
49 import java.util.Iterator JavaDoc;
50 import java.util.Set JavaDoc;
51
52
53
54 import org.apache.commons.logging.LogFactory;
55 import org.mr.MantaAgent;
56 import org.mr.kernel.services.queues.QueueMaster;
57 import org.mr.kernel.world.WorldModeler;
58
59 /**
60  * this shutdown hook recalls the service actors that are not durable subscribers
61  * @author Amir Shevat
62  *
63  */
64 public class ServiceRecallShutdownHook extends Thread JavaDoc {
65     public void run() {
66         int consumerNum = 0;
67         int producerNum = 0;
68         int coordinatorNum = 0;
69         try {
70             MantaAgent manta = MantaAgent.getInstance();
71             WorldModeler world =manta.getSingletonRepository().getWorldModeler();
72             Set JavaDoc services =world.getMyConsumedServices();
73             Iterator JavaDoc serviceItr = services.iterator();
74             while(serviceItr.hasNext()){
75                 MantaService service =(MantaService) serviceItr.next();
76                 
77                 Iterator JavaDoc actors = service.getConsumersByAgentId(manta.getAgentName()).iterator();
78                 while(actors.hasNext()){
79                     ServiceConsumer actor = (ServiceConsumer) actors.next();
80                     //if(!actor.isDurable()){
81 try {
82                         consumerNum++;
83                         manta.recallService(actor);
84                     } catch (Throwable JavaDoc e) {
85                         LogFactory.getLog("ServiceRecallShutdownHook").error("problem in ShutdownHook",e);
86                     }
87                     //}//if
88 }
89                         
90             }//while
91 services =world.getMyProducedServices();
92             
93              serviceItr = services.iterator();
94             while(serviceItr.hasNext()){
95                 MantaService service =(MantaService) serviceItr.next();
96                 
97                 Iterator JavaDoc actors = service.getProducersByAgentId(manta.getAgentName()).iterator();
98                 while(actors.hasNext()){
99                     ServiceProducer actor = (ServiceProducer) actors.next();
100                     //if(!actor.isDurable()){
101 try {
102                         producerNum++;
103                         manta.recallService(actor);
104                     } catch (Throwable JavaDoc e) {
105                         LogFactory.getLog("ServiceRecallShutdownHook").error("problem in ShutdownHook",e);
106                     }
107                     //}//if
108 }
109                         
110             }//while
111
112             services =world.getMyCoordinatedServices();
113             
114             serviceItr = services.iterator();
115             while(serviceItr.hasNext()){
116                 MantaService service =(MantaService) serviceItr.next();
117                 
118                 QueueMaster actor = manta.getSingletonRepository().getVirtualQueuesManager().getQueueMaster(service.getServiceName());
119                 if(actor.getAgentName().equals(manta.getAgentName())){
120                     try {
121                         coordinatorNum++;
122                         manta.recallService(actor);
123                     } catch (Throwable JavaDoc e) {
124                         LogFactory.getLog("ServiceRecallShutdownHook").error("problem in ShutdownHook",e);
125                     }
126                 }//if
127 }
128             int timeToSleep = 100;
129             String JavaDoc shutdownHookSleep = System.getProperty("sdhs");
130             if(shutdownHookSleep !=null){
131                 timeToSleep = Integer.parseInt(shutdownHookSleep);
132             }
133             sleep(timeToSleep);
134         } catch (Throwable JavaDoc e) {
135             LogFactory.getLog("ServiceRecallShutdownHook").error("problem in ShutdownHook",e);
136         }
137         LogFactory.getLog("ServiceRecallShutdownHook").info("Recalled "+consumerNum+" service consumers , "+producerNum+" service producers and "+coordinatorNum+" coordinators. (So long, and thanks for all the fish)");
138     }//run
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154 }
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