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//---PACKAGE DECLARATION--- |
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package uk.org.iscream.client; |
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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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* Skeleton class for Monitors |
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* |
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* @author $Author: ajm4 $ |
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* @version $Id: MonitorSkeleton.java,v 1.7 2001/03/22 17:56:58 ajm4 Exp $ |
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*/ |
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public abstract class MonitorSkeleton extends Thread implements PluginMonitor { |
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|
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//---FINAL ATTRIBUTES--- |
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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 MonitorSkeleton() { |
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this.start(); |
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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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while(_running) { |
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try { |
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analysePacket((XMLPacket) getQueue().get(getQueueId())); |
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} catch (InvalidQueueException e) { |
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_logger.write(this.toString(), Logger.ERROR, "Unable to get queue."); |
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} |
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} |
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} |
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|
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protected abstract void analysePacket(XMLPacket packet); |
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|
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protected void processAlert(int newThreshold, String attributeName, Register reg, String source, String currentValue) { |
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// decide what threshold level we're on, if we've changed, record that |
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if (newThreshold != reg.getLastThresholdLevel()) { |
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reg.setLastThresholdLevel(newThreshold); |
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} |
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// as long as this isn't a normal level |
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if(reg.getLastThresholdLevel() != Alert.thresholdNORMAL) { |
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// if the time since the last alert is more than the time for |
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// its timeout, fire an alert, escalate the alert |
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long timeout = reg.getLastAlertTimeout(); |
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if ((timeout > 0) && (reg.getTimeLastSent() > 0)) { |
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if((System.currentTimeMillis() - reg.getTimeLastSent()) > timeout) { |
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int lastAlert = reg.getLastAlertLevel(); |
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reg.escalateAlert(); |
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reg.setTimeLastSent( System.currentTimeMillis()); |
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reg.setLastAlertTimeout(reg.getAlertTimeout(reg.getLastAlertLevel())); |
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fireAlert(reg, lastAlert, source, currentValue, attributeName); |
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} |
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// if we don't have a timeout configured...we got STRAIGHT to the next level |
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} else { |
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int lastAlert = reg.getLastAlertLevel(); |
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reg.escalateAlert(); |
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reg.setTimeLastSent( System.currentTimeMillis()); |
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reg.setLastAlertTimeout(reg.getAlertTimeout(reg.getLastAlertLevel())); |
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fireAlert(reg, lastAlert, source, currentValue, attributeName); |
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} |
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|
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// we must be on ok, check the timeout value for this |
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} else { |
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// if we were on an OK alert before, then we don't do anything |
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// but if we weren't we only set OK, once the timout of the last |
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// alert has occourd |
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if (reg.getLastAlertLevel() != Alert.alertOK) { |
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long timeout = reg.getLastAlertTimeout(); |
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if ((timeout > 0) && (reg.getTimeLastSent() > 0)) { |
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if ((System.currentTimeMillis() - reg.getTimeLastSent()) > timeout) { |
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int lastAlert = reg.getLastAlertLevel(); |
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reg.setLastAlertLevel(Alert.alertOK); |
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reg.setTimeLastSent(System.currentTimeMillis()); |
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reg.setLastAlertTimeout(timeout); |
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fireAlert(reg, lastAlert, source, currentValue, attributeName); |
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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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/** |
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* return the String representation of what the monitor does |
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*/ |
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public abstract String getDescription(); |
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|
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|
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//---PRIVATE METHODS--- |
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|
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protected void fireAlert(Register reg, int lastAlert, String source, String currentValue, String attributeName) { |
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int alertLevel = reg.getLastAlertLevel(); |
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int thresholdLevel = reg.getLastThresholdLevel(); |
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String thresholdValue = String.valueOf(reg.getThreshold(thresholdLevel)); |
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String timeout = String.valueOf(reg.getAlertTimeout(reg.getLastAlertLevel()) / 1000); |
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// ensures we display a nice thing if its -1.0 |
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if (thresholdValue.equals("-1.0")) { |
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thresholdValue = "-"; |
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} |
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if (alertLevel == Alert.alertOK) { |
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timeout = "0"; |
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} |
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Alert alert = new Alert(alertLevel, lastAlert, thresholdLevel, source, thresholdValue, currentValue, attributeName, timeout, reg.getInitialAlertTime()); |
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_alerterQueue.add(alert); |
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_logger.write(toString(), Logger.DEBUG, "Fired alert for source:" + source + " at alert level:" + Alert.alertLevels[alertLevel] + " on:" + attributeName + " for threshold level:" + Alert.thresholdLevels[thresholdLevel] + " at:" + currentValue + " exceeding threshold of:" +thresholdValue + " next alert sent in:" + timeout + "secs"); |
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} |
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|
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//---ACCESSOR/MUTATOR METHODS--- |
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|
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protected abstract Queue getQueue(); |
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|
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protected int getQueueId() { |
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if (_qID == -1) { |
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_qID = getQueue().getQueue(); |
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} |
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return _qID; |
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} |
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|
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//---ATTRIBUTES--- |
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|
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protected Logger _logger = ReferenceManager.getInstance().getLogger(); |
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|
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protected Queue _alerterQueue = ClientMain._alerterQueue; |
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|
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protected int _qID = -1; |
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|
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protected boolean _running = true; |
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|
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//---STATIC ATTRIBUTES--- |
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|
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} |
