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//---PACKAGE DECLARATION--- |
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package uk.ac.ukc.iscream.client.monitors; |
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|
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//---IMPORTS--- |
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import java.util.HashMap; |
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import uk.ac.ukc.iscream.client.*; |
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import uk.ac.ukc.iscream.core.*; |
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import uk.ac.ukc.iscream.util.*; |
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import uk.ac.ukc.iscream.componentmanager.*; |
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|
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/** |
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* This Monitor watches the CPU load for all machines |
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* |
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* @author $Author: ajm4 $ |
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* @version $Id: CPU__Monitor.java,v 1.9 2001/03/02 03:57:06 ajm4 Exp $ |
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*/ |
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public class CPU__Monitor implements PluginMonitor { |
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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: 1.9 $"; |
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|
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public final String DESC = "Monitors CPU."; |
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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 CPU__Monitor() { |
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_alerterQueue = ClientMain._alerterQueue; |
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// get the configuration for this plug-in |
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Configuration config = _refman.getCM().getConfiguration(_name); |
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_levels = new double[(Alert.alerts).length]; |
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for (int x = 0; x < Alert.alerts.length; x++) { |
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try { |
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_levels[x] = Double.parseDouble(config.getProperty("Monitor.CPU.level." + x)); |
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} catch (NumberFormatException e) { |
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_logger.write(toString(), Logger.ERROR, "Invalid configured value for alert level " + x + " - ignoring level."); |
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_levels[x] = -1; |
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} catch (org.omg.CORBA.MARSHAL e2) { |
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_logger.write(toString(), Logger.WARNING, "Alert level " + x + " unused."); |
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_levels[x] = -1; |
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} |
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|
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} |
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} |
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|
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//---PUBLIC METHODS--- |
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|
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public void analysePacket(XMLPacket packet) { |
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if (packet.getParam("packet.attributes.type").equals("data")) { |
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String source = packet.getParam("packet.attributes.machine_name"); |
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if (!_hosts.containsKey(source)) { |
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_hosts.put(source, new Register(_attributes.length)); |
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} |
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|
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Register reg = (Register) _hosts.get(source); |
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for(int x = 0; x < _attributes.length; x++) { |
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int result = checkAttribute(packet, _attributes[x]); |
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if (result != reg.getRegister(x)) { |
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reg.setRegister(x, result); |
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fireAlert(result, source, packet.getParam(_attributes[x]), _attributeNames[x]); |
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} |
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} |
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} |
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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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/** |
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* return the String representation of what the filter does |
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*/ |
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public String getDescription(){ |
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return DESC; |
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} |
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|
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//---PRIVATE METHODS--- |
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|
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private int checkAttribute(XMLPacket packet, String packetAttribute) { |
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for(int x = _levels.length - 1; x >= 0; x--) { |
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if (_levels[x] != -1) { |
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if(packet.getParam(packetAttribute) != null) { |
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double attribute = Double.parseDouble(packet.getParam(packetAttribute)); |
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if (_levels[x] < attribute) return x; |
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} |
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} |
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} |
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return 0; |
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} |
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|
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private void fireAlert(int alertLevel, String source, String currentValue, String attributeName) { |
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String thresholdValue = Double.toString(_levels[alertLevel]); |
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Alert alert = new Alert(alertLevel, source, thresholdValue, currentValue, attributeName); |
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_alerterQueue.add(alert); |
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_logger.write(toString(), Logger.DEBUG, "Fired alert for source:" + source + " at alert level:" + alertLevel + " on:" + attributeName + " at:" + currentValue + " exceeding threshold:" + _levels[alertLevel]); |
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} |
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|
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//---ACCESSOR/MUTATOR METHODS--- |
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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 = ClientMain.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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private double[] _levels; |
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|
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private Queue _alerterQueue; |
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|
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/** |
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* A reference to the reference manager in use |
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*/ |
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private ReferenceManager _refman = ReferenceManager.getInstance(); |
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|
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private HashMap _hosts = new HashMap(); |
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|
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private String[] _attributes = { "packet.cpu.user", "packet.cpu.kernel", "packet.cpu.iowait", "packet.cpu.swap" }; |
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private String[] _attributeNames = {"User CPU", "Kernel CPU", "I/O Wait CPU", "Swap CPU"}; |
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|
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//---STATIC ATTRIBUTES--- |
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|
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} |
