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tdb |
1.15 |
/* |
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* i-scream central monitoring system |
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tdb |
1.18 |
* http://www.i-scream.org |
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tdb |
1.15 |
* Copyright (C) 2000-2002 i-scream |
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* |
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* This program is free software; you can redistribute it and/or |
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* modify it under the terms of the GNU General Public License |
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* as published by the Free Software Foundation; either version 2 |
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* of the License, or (at your option) any later version. |
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* |
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* This program is distributed in the hope that it will be useful, |
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* but WITHOUT ANY WARRANTY; without even the implied warranty of |
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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* GNU General Public License for more details. |
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* |
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* You should have received a copy of the GNU General Public License |
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* along with this program; if not, write to the Free Software |
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* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. |
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*/ |
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ajm |
1.1 |
//---PACKAGE DECLARATION--- |
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tdb |
1.14 |
package uk.org.iscream.cms.conient; |
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ajm |
1.1 |
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//---IMPORTS--- |
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import java.io.*; |
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tdb |
1.17 |
import uk.org.iscream.cms.util.*; |
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ajm |
1.1 |
|
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/** |
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ajm |
1.7 |
* The class reads in data from a BufferedReader, |
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* it then converts it to an XMLPacket and adds |
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* it to its Queue for anything that wants it. |
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ajm |
1.1 |
* |
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tdb |
1.15 |
* @author $Author: tdb $ |
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tdb |
1.18 |
* @version $Id: DataReader.java,v 1.17 2003/02/05 19:35:04 tdb Exp $ |
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ajm |
1.1 |
*/ |
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public class DataReader extends Thread { |
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//---FINAL ATTRIBUTES--- |
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/** |
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* The current CVS revision of this class |
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*/ |
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tdb |
1.18 |
public final String REVISION = "$Revision: 1.17 $"; |
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ajm |
1.1 |
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//---STATIC METHODS--- |
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//---CONSTRUCTORS--- |
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ajm |
1.7 |
/** |
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* Constructs a new data reader, giving it its BufferedReader |
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* and Queue. |
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* |
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* @param inBound the BufferedReader this class should use |
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* @param dataQueue the queue new data should be placed on |
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ajm |
1.12 |
* @param ch the connection handler in use |
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ajm |
1.7 |
*/ |
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ajm |
1.12 |
public DataReader(BufferedReader inBound, Queue dataQueue, ConnectionHandler ch) { |
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_ch = ch; |
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ajm |
1.1 |
_inBound = inBound; |
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ajm |
1.5 |
_dataQueue = dataQueue; |
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ajm |
1.1 |
} |
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//---PUBLIC METHODS--- |
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ajm |
1.7 |
/** |
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* This thread reads data from the BufferedReader. |
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* It does this until either there is a problem |
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* or it is told to stop. |
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* |
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ajm |
1.12 |
* If there is a problem it calls shutdownLinks in the |
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* ConnectionHandler. |
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* |
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ajm |
1.7 |
* Any data it reads it converts to XML and then |
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* adds to its queue. |
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*/ |
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ajm |
1.1 |
public void run() { |
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ajm |
1.3 |
try { |
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ajm |
1.7 |
String line; |
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// continue until we are told to stop |
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ajm |
1.6 |
while (_running) { |
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ajm |
1.7 |
line = _inBound.readLine(); |
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tdb |
1.9 |
if (line == null) { |
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throw new IOException("unexpected loss of connection to server"); |
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} |
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ajm |
1.7 |
_dataQueue.add(line); |
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ajm |
1.6 |
} |
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ajm |
1.7 |
// close the BufferedReader |
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ajm |
1.6 |
_inBound.close(); |
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ajm |
1.3 |
} catch (IOException e) { |
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ajm |
1.10 |
Conient.addMessage("WARNING{data reader}: inbound data stopped - "+e); |
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ajm |
1.7 |
_running = false; |
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ajm |
1.12 |
// tell the ConnectionHandler to shut down the links |
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ajm |
1.13 |
_ch.shutdownDataLink(); |
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ajm |
1.1 |
} |
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} |
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100 |
ajm |
1.7 |
/** |
101 |
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* This method allows other classes |
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* to shutdown this data reader. |
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*/ |
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public void shutdown() { |
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_running = false; |
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} |
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108 |
ajm |
1.1 |
//---PRIVATE METHODS--- |
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//---ACCESSOR/MUTATOR METHODS--- |
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//---ATTRIBUTES--- |
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114 |
ajm |
1.7 |
/** |
115 |
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* The reader we are reading from. |
116 |
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*/ |
117 |
ajm |
1.12 |
private BufferedReader _inBound; |
118 |
ajm |
1.7 |
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119 |
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/** |
120 |
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* The Queue we place data on. |
121 |
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*/ |
122 |
ajm |
1.12 |
private Queue _dataQueue; |
123 |
ajm |
1.7 |
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/** |
125 |
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* The state of this thread. |
126 |
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*/ |
127 |
ajm |
1.12 |
private boolean _running = true; |
128 |
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129 |
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/** |
130 |
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* A reference to the ConnectionHandler in use |
131 |
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*/ |
132 |
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private ConnectionHandler _ch; |
133 |
ajm |
1.7 |
|
134 |
ajm |
1.1 |
//---STATIC ATTRIBUTES--- |
135 |
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136 |
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} |