KickJava   Java API By Example, From Geeks To Geeks.

Java > Open Source Codes > org > mr > kernel > IncomingMessageManager


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 03/06/2004
48  *
49  * Manta LTD
50  */
51 package org.mr.kernel;
52
53
54 import org.apache.commons.logging.Log;
55 import org.apache.commons.logging.LogFactory;
56 import org.mr.core.protocol.MantaBusMessage;
57 import org.mr.core.util.Stage;
58 import org.mr.core.util.StageHandler;
59 import org.mr.core.util.StageParams;
60
61 /**
62  * IncomingMessageManager acts as stage for incoming message to all the type
63  * (client,control,management) it does the SLA ordering as well
64  * @author Amir Shevat
65  *
66  */
67 public class IncomingMessageManager implements StageHandler {
68     Stage stage = null;
69     private Log log = null;
70     
71      
72     public IncomingMessageManager(){
73         StageParams params = new StageParams();
74         
75         params.setPersistent(false);
76         params.setBlocking(false);
77         
78
79         params.setStageName("Incoming messages");
80         params.setHandler(this);
81         stage = new Stage(params);
82         
83         log = LogFactory.getLog("IncomingMessageManager");
84     }
85     
86     
87     
88     
89     /**
90      * when the a message has Arrived from the network layer this method is called
91      * @param msg the arriving message
92      */
93     public void messageArrived(MantaBusMessage msg){
94         stage.enqueue(msg);
95         if (log.isDebugEnabled()) {
96             log.debug("Received a new message. Message ID="+msg.getMessageId()+". Message enqueued.");
97         }
98     }
99
100     /* (non-Javadoc)
101      * @see org.mr.core.util.StageHandler#handle(java.lang.Object)
102      */
103     public boolean handle(Object JavaDoc event) {
104         IncomingMessageListenerRegister.notifyListeners((MantaBusMessage)event);
105         return true;
106     }
107 }
108
Popular Tags