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//---PACKAGE DECLARATION--- |
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package uk.org.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.org.iscream.client.*; |
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import uk.org.iscream.core.*; |
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import uk.org.iscream.util.*; |
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import uk.org.iscream.componentmanager.*; |
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|
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/** |
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* This Monitor watches the Load for all machines |
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* |
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* @author $Author: tdb1 $ |
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* @version $Id: Load__Monitor.java,v 1.1 2001/03/22 00:52:48 tdb1 Exp $ |
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*/ |
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public class Load__Monitor extends MonitorSkeleton { |
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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: 1.1 $"; |
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|
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public final String DESC = "Monitors Load."; |
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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 METHODS--- |
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|
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public void analysePacket(XMLPacket packet) { |
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|
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String source = packet.getParam("packet.attributes.machine_name"); |
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if (!_hosts.containsKey(source)) { |
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HashMap attributeRegisters = new HashMap(); |
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initAttributeRegsiters(source, attributeRegisters); |
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_hosts.put(source, attributeRegisters); |
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} |
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|
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HashMap attributeRegisters = (HashMap) _hosts.get(source); |
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for(int attributeNum = 0; attributeNum < _attributes.length; attributeNum++) { |
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Register reg = (Register) attributeRegisters.get(_attributes[attributeNum]); |
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// find out the threshold level we're at |
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String attribute = _attributes[attributeNum]; |
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String attributeName = _attributeNames[attributeNum]; |
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String currentValue = packet.getParam(attribute); |
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int newThreshold = checkAttributeThreshold(currentValue, reg); |
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processAlert(newThreshold, attributeName, reg, source, currentValue); |
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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.org.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 monitor 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 checkAttributeThreshold(String attributeString, Register reg) { |
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for(int thresholdLevel = Alert.thresholdLevels.length - 1; thresholdLevel >= 0; thresholdLevel--) { |
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if (reg.getThreshold(thresholdLevel) != -1.0) { |
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if(attributeString != null) { |
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try { |
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double attribute = Double.parseDouble(attributeString); |
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if (reg.getThreshold(thresholdLevel) < attribute) return thresholdLevel; |
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} catch (NumberFormatException e) { |
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// we got some duff data in the packet, but we shouldn't have |
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_logger.write(toString(), Logger.DEBUG, "possible errenous packet data, should be double value - " + attributeString); |
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} |
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} |
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} |
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} |
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return Alert.thresholdNORMAL; |
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} |
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|
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private void initAttributeRegsiters(String source, HashMap attributeRegisters) { |
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for(int attributeNum = 0; attributeNum < _attributes.length; attributeNum++) { |
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String attributeName = _attributes[attributeNum].substring(_attributes[attributeNum].lastIndexOf(".") + 1); |
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attributeRegisters.put(_attributes[attributeNum], new Register(source, _name, attributeName)); |
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} |
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} |
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|
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//---ACCESSOR/MUTATOR METHODS--- |
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|
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protected Queue getQueue() { |
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return MonitorManager.getInstance().getDataQueue(); |
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} |
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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 = "Load"; |
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|
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/** |
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* A reference to the configuration proxy in use |
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*/ |
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private ConfigurationProxy _cp = ConfigurationProxy.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.load.load1", "packet.load.load5", "packet.load.load15" }; |
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private String[] _attributeNames = {"1 min load avg.", "5 min load avg.", "15 min load avg."}; |
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|
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//---STATIC ATTRIBUTES--- |
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|
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} |
