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//---PACKAGE DECLARATION--- |
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package uk.ac.ukc.iscream.clientinterface; |
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|
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//---IMPORTS--- |
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import uk.ac.ukc.iscream.util.*; |
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import uk.ac.ukc.iscream.componentmanager.*; |
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import uk.ac.ukc.iscream.core.*; |
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import java.net.Socket; |
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import java.io.InputStream; |
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import java.io.OutputStream; |
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import java.io.IOException; |
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import java.io.BufferedReader; |
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import java.io.PrintWriter; |
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import java.io.InputStreamReader; |
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|
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/** |
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* Acts as a Data Handler to a TCP based client. |
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* |
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* @author $Author: tdb1 $ |
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* @version $Id: TCPDataHandler.java,v 1.3 2001/01/23 00:01:39 tdb1 Exp $ |
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*/ |
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class TCPDataHandler extends Thread { |
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|
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//---FINAL ATTRIBUTES--- |
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|
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/** |
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* The current CVS revision of this class |
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*/ |
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public final String REVISION = "$Revision: 1.3 $"; |
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|
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//---STATIC METHODS--- |
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|
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//---CONSTRUCTORS--- |
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|
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public TCPDataHandler(Socket socket) throws IOException { |
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_socket = socket; |
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_queue = new Queue(); |
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_socketIn = new BufferedReader(new InputStreamReader(_socket.getInputStream())); |
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_socketOut = new PrintWriter(_socket.getOutputStream()); |
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_logger.write(toString(), Logger.SYSINIT, "created"); |
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} |
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|
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//---PUBLIC METHODS--- |
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|
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public void run() { |
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run = true; |
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int qID = _queue.getQueue(); |
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while(run) { |
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try { |
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String xml = (String) _queue.get(qID); |
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_socketOut.println(xml); |
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_socketOut.flush(); |
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} |
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catch(InvalidQueueException e) { |
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run = false; |
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_logger.write(toString(), Logger.ERROR, "Queue failure: "+e); |
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} |
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} |
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_logger.write(toString(), Logger.SYSMSG, "Shutting Down"); |
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try { |
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_socketOut.close(); |
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_socketIn.close(); |
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_socket.close(); |
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} |
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catch(IOException e) { |
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_logger.write(toString(), Logger.ERROR, "Exception whilst shutting down: "+e); |
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} |
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_queue.removeQueue(qID); |
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} |
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|
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public void shutdown() { |
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run=false; |
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} |
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|
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/** |
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* Overrides the {@link java.lang.Object#toString() Object.toString()} |
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* method to provide clean logging (every class should have this). |
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* |
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* This uses the uk.ac.ukc.iscream.util.NameFormat class |
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* to format the toString() |
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* |
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* @return the name of this class and its CVS revision |
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*/ |
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public String toString() { |
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return FormatName.getName( |
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_name, |
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getClass().getName(), |
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REVISION); |
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} |
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|
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//---PRIVATE METHODS--- |
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|
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//---ACCESSOR/MUTATOR METHODS--- |
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|
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public Queue getQueue() { |
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return _queue; |
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} |
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|
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//---ATTRIBUTES--- |
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|
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/** |
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* This is the friendly identifier of the |
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* component this class is running in. |
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* eg, a Filter may be called "filter1", |
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* If this class does not have an owning |
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* component, a name from the configuration |
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* can be placed here. This name could also |
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* be changed to null for utility classes. |
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*/ |
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private String _name = ClientInterfaceMain.NAME; |
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|
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/** |
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* This holds a reference to the |
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* system logger that is being used. |
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*/ |
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private Logger _logger = ReferenceManager.getInstance().getLogger(); |
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|
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/** |
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* A hook to the inbound data from the socket |
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*/ |
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private BufferedReader _socketIn; |
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|
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/** |
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* A hook to the outbound stream for the socket |
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*/ |
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private PrintWriter _socketOut; |
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|
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private Socket _socket; |
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|
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private Queue _queue; |
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private boolean run; |
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|
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//---STATIC ATTRIBUTES--- |
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|
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} |
