1 |
/* |
2 |
* i-scream central monitoring system |
3 |
* http://www.i-scream.org.uk |
4 |
* Copyright (C) 2000-2002 i-scream |
5 |
* |
6 |
* This program is free software; you can redistribute it and/or |
7 |
* modify it under the terms of the GNU General Public License |
8 |
* as published by the Free Software Foundation; either version 2 |
9 |
* of the License, or (at your option) any later version. |
10 |
* |
11 |
* This program is distributed in the hope that it will be useful, |
12 |
* but WITHOUT ANY WARRANTY; without even the implied warranty of |
13 |
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
14 |
* GNU General Public License for more details. |
15 |
* |
16 |
* You should have received a copy of the GNU General Public License |
17 |
* along with this program; if not, write to the Free Software |
18 |
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. |
19 |
*/ |
20 |
|
21 |
//---PACKAGE DECLARATION--- |
22 |
package uk.org.iscream.cms.server.rootfilter; |
23 |
|
24 |
//---IMPORTS--- |
25 |
import uk.org.iscream.cms.server.core.*; |
26 |
import uk.org.iscream.cms.server.componentmanager.*; |
27 |
import uk.org.iscream.cms.server.clientinterface.*; |
28 |
import uk.org.iscream.cms.util.*; |
29 |
|
30 |
/** |
31 |
* A ClientInterface wrapper - the CI objects are pushed data, |
32 |
* yet data is pulled from the queue. This will sit inbetween |
33 |
* for now, until the CI design is changed. |
34 |
* |
35 |
* @author $Author: tdb $ |
36 |
* @version $Id $ |
37 |
*/ |
38 |
public class CIWrapper extends Thread { |
39 |
|
40 |
//---FINAL ATTRIBUTES--- |
41 |
|
42 |
/** |
43 |
* The current CVS revision of this class |
44 |
*/ |
45 |
public final String REVISION = "$Revision: 1.14 $"; |
46 |
|
47 |
//---STATIC METHODS--- |
48 |
|
49 |
//---CONSTRUCTORS--- |
50 |
|
51 |
/** |
52 |
* Sets up the wrapper, with a single destination and a queue. |
53 |
* |
54 |
* @param destination the client interface to send the xml to |
55 |
* @param queue a reference to a queue to use |
56 |
*/ |
57 |
public CIWrapper(ClientInterface destination, Queue queue){ |
58 |
// set the Thread name |
59 |
setName("rootfilter.CIWrapper"); |
60 |
|
61 |
_destination = destination; |
62 |
_queue = queue; |
63 |
_queueID = queue.getQueue(); |
64 |
} |
65 |
|
66 |
//---PUBLIC METHODS--- |
67 |
|
68 |
/** |
69 |
* start the thread and thus gets and sends data |
70 |
*/ |
71 |
public void run() { |
72 |
String xml = null; |
73 |
boolean run = true; |
74 |
while(run) { |
75 |
// get a line of XML from the queue |
76 |
try { |
77 |
xml = (String) _queue.get(_queueID); |
78 |
} |
79 |
catch (InvalidQueueException e) { |
80 |
_logger.write(toString(), Logger.ERROR, "Queue error: "+e); |
81 |
} |
82 |
// pass it on to the destination |
83 |
try { |
84 |
_destination.receiveXML(xml); |
85 |
} |
86 |
catch (org.omg.CORBA.COMM_FAILURE e) { |
87 |
run = false; |
88 |
_logger.write(toString(), Logger.ERROR, "Connection failure (COMM_FAILURE), client interface shutdown? : "+e); |
89 |
} |
90 |
catch (org.omg.CORBA.TRANSIENT e) { |
91 |
run = false; |
92 |
_logger.write(toString(), Logger.ERROR, "Connection failure (TRANSIENT), client interface shutdown? : "+e); |
93 |
} |
94 |
} |
95 |
// looks like something when wrong in communication |
96 |
// rather than fall over in a heap, lets just stop |
97 |
// cleanly and shutdown our queue... |
98 |
_logger.write(toString(), Logger.SYSMSG, "Shutting Down..."); |
99 |
_queue.removeQueue(_queueID); |
100 |
} |
101 |
|
102 |
/** |
103 |
* Overrides the {@link java.lang.Object#toString() Object.toString()} |
104 |
* method to provide clean logging (every class should have this). |
105 |
* |
106 |
* This uses the uk.org.iscream.cms.util.NameFormat class |
107 |
* to format the toString() |
108 |
* |
109 |
* @return the name of this class and its CVS revision |
110 |
*/ |
111 |
public String toString() { |
112 |
return FormatName.getName( |
113 |
_name, |
114 |
getClass().getName(), |
115 |
REVISION); |
116 |
} |
117 |
|
118 |
//---PRIVATE METHODS--- |
119 |
|
120 |
//---ACCESSOR/MUTATOR METHODS--- |
121 |
|
122 |
//---ATTRIBUTES--- |
123 |
|
124 |
/** |
125 |
* A reference to a Queue object. |
126 |
*/ |
127 |
private Queue _queue; |
128 |
|
129 |
/** |
130 |
* Our Queue id. |
131 |
*/ |
132 |
private int _queueID; |
133 |
|
134 |
/** |
135 |
* the interface this thread is sending data to |
136 |
*/ |
137 |
private ClientInterface _destination; |
138 |
|
139 |
/** |
140 |
* This is the friendly identifier of the |
141 |
* component this class is running in. |
142 |
* eg, a Filter may be called "filter1", |
143 |
* If this class does not have an owning |
144 |
* component, a name from the configuration |
145 |
* can be placed here. This name could also |
146 |
* be changed to null for utility classes. |
147 |
*/ |
148 |
private String _name = RootFilter.NAME; |
149 |
|
150 |
/** |
151 |
* This holds a reference to the |
152 |
* system logger that is being used. |
153 |
*/ |
154 |
private Logger _logger = ReferenceManager.getInstance().getLogger(); |
155 |
|
156 |
//---STATIC ATTRIBUTES--- |
157 |
|
158 |
} |