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//---PACKAGE DECLARATION--- |
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package uk.org.iscream.conient; |
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|
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//---IMPORTS--- |
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import uk.org.iscream.util.*; |
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import java.util.HashMap; |
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import java.util.List; |
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import java.util.Collections; |
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import javax.swing.ImageIcon; |
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import javax.swing.JPanel; |
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import javax.swing.BorderFactory; |
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import java.awt.CardLayout; |
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import javax.swing.JSplitPane; |
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import java.util.StringTokenizer; |
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import javax.swing.SwingUtilities; |
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import javax.swing.DefaultListModel; |
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import javax.swing.JList; |
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import javax.swing.JScrollPane; |
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import java.awt.Dimension; |
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import javax.swing.event.ListSelectionListener; |
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import javax.swing.event.ListSelectionEvent; |
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import javax.swing.ListSelectionModel; |
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|
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/** |
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* This thread reads data from the DataReader |
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* it then asks the appropriate HostDisplayPanel |
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* to update its data. |
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* |
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* @author $Author: ajm4 $ |
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* @version $Id: DataPanel.java,v 1.22 2001/03/19 00:23:50 ajm4 Exp $ |
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*/ |
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public class DataPanel extends JSplitPane implements Runnable { |
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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: 1.22 $"; |
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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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/** |
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* Constructs the data panel |
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*/ |
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public DataPanel() { |
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super(JSplitPane.HORIZONTAL_SPLIT); |
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|
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JScrollPane left = new JScrollPane(_hostChooserList); |
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JScrollPane right = new JScrollPane(_displayPane); |
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|
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setOneTouchExpandable(true); |
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setLeftComponent(left); |
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setRightComponent(right); |
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setDividerLocation(150); |
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_xmlPacketMaker = new XMLPacketMaker(); |
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} |
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|
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//---PUBLIC METHODS--- |
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|
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/** |
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* Starts the DataPanel running |
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*/ |
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public void run() { |
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// setup the host list we will be using |
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refreshHostList(); |
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if(Configuration.getInstance().getProperty("displayQueueInformation").equals("1")) { |
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if (_qFrame == null) { |
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_qFrame = new QueueFrame(); |
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} |
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if (!_qFrame.isVisible()) { |
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_qFrame.setVisible(true); |
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} |
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} |
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|
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try { |
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while(_running) { |
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|
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String xml = (String) _dataQueue.get(_myQueue); |
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// if we want to debug the packets |
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if(Configuration.getInstance().getProperty("packetDump").equals("1")) { |
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System.out.println("[PACKET DUMP]\n" + xml); |
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} |
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|
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Conient.setQueueStatus(_dataQueue.queueSize(_myQueue), _dataQueue.elementCount()); |
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if (xml == null) { |
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// shouldn't really happen...but not sure |
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//_status.insert("No XML to update...",0); |
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} else { |
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|
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// Use XMLPacketMaker to make an XMLPacket object. |
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|
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XMLPacket packet = _xmlPacketMaker.createXMLPacket(xml); |
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|
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String packetType = packet.getParam("packet.attributes.type"); |
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if (packetType.equals("heartbeat") || packetType.equals("data")) { |
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String hostName = packet.getParam("packet.attributes.machine_name"); |
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// if we're not using a fixed list |
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if(!_usingConfiguredList) { |
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// if we don't know about this host |
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// add it. |
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if(!_hostList.containsKey(hostName)) { |
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addHostPanel(hostName); |
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// if we want to remember new hosts (ie, in "discovery" mode) |
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if(_config.getProperty("hostDiscoveryMode").equals("1")) { |
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addToKnownHosts(hostName); |
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} |
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} |
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} |
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// one final check that we know about the host |
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// if we don't by now, then the server must have sent something odd |
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if(_hostList.containsKey(hostName)) { |
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if (!((HostDisplayPanel) _hostList.get(hostName)).updateHost(packet)) { |
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//throw new Exception(hostName + " sent an invalid data packet stopping data update!"); |
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Conient.addMessage("WARNING{data panel}: " + hostName + " sent an invalid data or heartbeat packet"); |
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} |
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} else { |
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Conient.addMessage("WARNING{data panel}: server sent data for an unexpected host - " + hostName); |
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} |
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} else if (packetType.equals("queueStat")) { |
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// check to config to see if we want queueStat packets to be processed or not |
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if(Configuration.getInstance().getProperty("displayQueueInformation").equals("1") && _qFrame != null) { |
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if (_qFrame.isVisible()) _qFrame.update(packet); |
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} |
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} else { |
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Conient.addMessage("WARNING{data panel}: and unknown packet type was received - " + packetType); |
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} |
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} |
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} |
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} catch (Exception e) { |
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Conient.addMessage("ERROR{data panel}: +" + e); |
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e.printStackTrace(); |
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} |
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} |
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|
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/** |
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* This method allows other classes |
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* to shutdown this data panel. |
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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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|
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//---PRIVATE METHODS--- |
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|
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/** |
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* Build the host list according to the configuration. |
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* If we're set to use one, it populates the display. |
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* If we're using one and its empty, or if we're not using |
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* one, we set that we're not so that we use all host we detect. |
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* |
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* See the run method for information on host discovery if we're |
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* getting all the hosts. |
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*/ |
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private void refreshHostList() { |
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// reset the list |
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_hostList = new HashMap(); |
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// check we're using a set list |
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if (_config.getProperty("useHostList").equals("1")) { |
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// if we are get it and set up the display |
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String hostList = _config.getProperty("hostList"); |
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if (!hostList.equals("")) { |
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StringTokenizer st = new StringTokenizer(hostList, ";"); |
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while(st.hasMoreTokens()) { |
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String host = st.nextToken(); |
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addHostPanel(host); |
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} |
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_usingConfiguredList = true; |
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// if we've got no list setup, we set that we're taking all |
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// hosts that might come in. |
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} else { |
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_usingConfiguredList = false; |
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} |
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// we're not using a list |
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} else { |
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_usingConfiguredList = false; |
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} |
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} |
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|
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/** |
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* Adds a new Host to the hostList and adds its |
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* display to the tabbed pane. |
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* |
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* @param host the host to add |
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*/ |
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private void addHostPanel(String host) { |
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HostDisplayPanel hostPanel = new HostDisplayPanel(host); |
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//SwingSafeAdd task = new SwingSafeAdd(_displayPane, hostPanel); |
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//SwingUtilities.invokeLater(task); |
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_displayPane.add(hostPanel, host); |
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_hostList.put(host, hostPanel); |
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|
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// we need to reconstruct the displayed host list, so its |
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// sorted. |
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_hostChooserList.setListData((new java.util.TreeSet(_hostList.keySet())).toArray()); |
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|
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Conient.addMessage("New Host added: " + host); |
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} |
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|
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/** |
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* If we are in "discovery" mode, we want to keep a list |
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* of all new hosts we find, so we can add it to our list. |
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* This method simply adds the host to the end of the |
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* "knownHostList" property. |
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* |
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* @param host the host to add |
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*/ |
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private void addToKnownHosts(String host) { |
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String knownHosts = _config.getProperty("knownHostsList"); |
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if (knownHosts.indexOf(host) == -1) { |
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_config.setProperty("knownHostsList", knownHosts + host + ";"); |
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} |
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} |
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|
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/** |
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* Removes all the tabs on display |
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* Used to tidy up when a new data |
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* channel is opened. |
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*/ |
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public void cleanUpTabs() { |
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_displayPaneLayout = new CardLayout(); |
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_displayPane = new JPanel(_displayPaneLayout); |
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JScrollPane right = new JScrollPane(_displayPane); |
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setRightComponent(right); |
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} |
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|
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//---ACCESSOR/MUTATOR METHODS--- |
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|
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/** |
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* Assigns the queue that this panel |
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* will use to obtain data |
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* |
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* @param queue the queue |
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*/ |
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public void setQueue(Queue queue) { |
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_dataQueue = queue; |
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_myQueue = _dataQueue.getQueue(); |
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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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* The state of this thread. |
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*/ |
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boolean _running = true; |
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|
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/** |
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* This card layout is used for the _displayPane |
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* it allows the chooser list to select which |
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* host to display |
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*/ |
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private CardLayout _displayPaneLayout = new CardLayout(); |
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|
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/** |
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* The panel where HostDisplayPanel's |
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* are placed, it uses a CardLayout |
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*/ |
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private JPanel _displayPane = new JPanel(_displayPaneLayout); |
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|
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/** |
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* The host list allows the user to select which |
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* host pane is topmost |
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*/ |
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private JList _hostChooserList = new JList(); |
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{ |
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_hostChooserList.setSelectionMode(ListSelectionModel.SINGLE_SELECTION); |
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_hostChooserList.addListSelectionListener(new ListSelectionListener() { |
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public void valueChanged(ListSelectionEvent e) { |
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int selection = _hostChooserList.getSelectedIndex(); |
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if (selection > -1) { |
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_displayPaneLayout.show(_displayPane, (String) _hostChooserList.getSelectedValue()); |
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} |
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} |
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}); |
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} |
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/** |
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* The queue new data will be read from |
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*/ |
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private Queue _dataQueue; |
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|
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/** |
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* Our queue number |
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*/ |
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int _myQueue; |
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|
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/** |
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* An icon to represent a host |
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*/ |
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private ImageIcon _serverIcon = new ImageIcon("./uk/ac/ukc/iscream/conient/server.gif"); |
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|
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/** |
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* A frame to display Queue information |
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* may not always be used - loaded according to config |
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*/ |
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private QueueFrame _qFrame = null; |
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|
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/** |
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* A reference to the configuraton object |
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*/ |
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private Configuration _config = Configuration.getInstance(); |
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|
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/** |
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* Contains a list of hosts that the data panel will use |
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* or build during its operation. |
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*/ |
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private HashMap _hostList = null; |
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|
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/** |
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* If we should be using a configured list or just accepting |
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* all the hosts we get |
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*/ |
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boolean _usingConfiguredList = false; |
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|
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private XMLPacketMaker _xmlPacketMaker; |
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} |
