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/* |
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* i-scream central monitoring system |
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* http://www.i-scream.org.uk |
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* Copyright (C) 2000-2002 i-scream |
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* |
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* This program is free software; you can redistribute it and/or |
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* modify it under the terms of the GNU General Public License |
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* as published by the Free Software Foundation; either version 2 |
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* of the License, or (at your option) any later version. |
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* |
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* This program is distributed in the hope that it will be useful, |
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* but WITHOUT ANY WARRANTY; without even the implied warranty of |
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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* GNU General Public License for more details. |
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* |
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* You should have received a copy of the GNU General Public License |
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* along with this program; if not, write to the Free Software |
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* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. |
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*/ |
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|
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//---PACKAGE DECLARATION--- |
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package uk.org.iscream.client.monitors; |
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package uk.org.iscream.cms.server.client.monitors; |
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//---IMPORTS--- |
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import java.util.HashMap; |
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import java.util.Set; |
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import java.util.Iterator; |
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import java.text.NumberFormat; |
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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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import uk.org.iscream.cms.server.client.*; |
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import uk.org.iscream.cms.server.core.*; |
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import uk.org.iscream.cms.server.util.*; |
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import uk.org.iscream.cms.server.componentmanager.*; |
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/** |
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* This Monitor watches the internal server queues. |
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*/ |
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public final String REVISION = "$Revision$"; |
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/** |
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* A description of this monitor |
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*/ |
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public final String DESC = "Who watches the watchmen?"; |
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private final String SOURCE = "i-scream-server"; |
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//---STATIC METHODS--- |
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//---CONSTRUCTORS--- |
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//---PUBLIC METHODS--- |
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/** |
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* Analyse a packet of data, and generate an alert if |
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* necessary. |
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* |
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* @param packet the XMLPacket to analyse |
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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 (packet.getParam("packet.attributes.type").equals("queueStat")) { |
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String source = packet.getParam("packet.attributes.hashCode"); |
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if (!_hosts.containsKey(source)) { |
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_hosts.put(source, new HashMap()); |
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} |
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String dataKey = (String) i.next(); |
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if(dataKey.startsWith("packet.queue.attributes.queue")) { |
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String queueSize = packet.getParam(dataKey); |
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// silently ignore these |
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// they're generated by the queueMonitor for deleted queues |
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if(queueSize.equals("[deleted]")) { |
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break; |
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} |
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// *** now process this queue *** |
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// check if we've seen this queue before on a previous run |
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// if not, we need to create a register for it |
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if(!queueRegisters.containsKey(dataKey)) { |
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queueRegisters.put(dataKey, new Register(source, _name)); |
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queueRegisters.put(dataKey, new Register(_name, _name)); |
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} |
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// get the register for this disk |
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boolean useValue = false; |
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try { |
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String option = _cp.getProperty("Host." + source, "Monitor." + _name + ".thresholdMeasure"); |
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String option = _cp.getProperty(_name, "Monitor." + _name + ".thresholdMeasure"); |
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if (option.equals("VALUE")) { |
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useValue = true; |
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} |
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// we default to percentage |
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} |
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// this bit determines if the disk check is a % check |
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// or a kb check |
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// this bit determines if the queue check is a % check |
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// or a literal value check |
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double checkValue; |
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String type; |
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if(useValue) { |
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// kb disk in use |
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// queue count |
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checkValue = qSize; |
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type = "count"; |
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} else { |
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// % disk in use |
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// % of queue |
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checkValue = (qSize / qMax) * 100; |
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type = "%"; |
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} |
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– |
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– |
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int newThreshold = checkAttributeThreshold(checkValue, reg); |
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// format the checkValue to a String |
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String strCheckValue = nf.format(checkValue); |
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// say which disk had the problem |
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String attributeName = "Size of queue " + type + " in " + queueName; |
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String attributeName = "Size of queue " + type + " in " + queueName + " " + dataKey.substring(dataKey.lastIndexOf('.')+1); |
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processAlert(newThreshold, attributeName, reg, source, strCheckValue); |
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processAlert(newThreshold, attributeName, reg, SOURCE, strCheckValue); |
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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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* This uses the uk.org.iscream.cms.server.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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//---PRIVATE METHODS--- |
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/** |
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* Checks a piece of current data, and returns the |
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* threshold it breaches, if any. |
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* |
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* @param qSize the size of a queue |
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* @param reg the Register for the host |
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* @return the threshold level breached, if any |
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*/ |
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private int checkAttributeThreshold(double qSize, 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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} |
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//---ACCESSOR/MUTATOR METHODS--- |
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/** |
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* Returns a reference to a specific Queue for this |
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* monitor. This Queue returns only the data packets |
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* (based on type) that we want too look at. |
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* |
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* @return a reference to a Queue |
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*/ |
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protected Queue getQueue() { |
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return MonitorManager.getInstance().getOtherQueue(); |
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} |
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//---ATTRIBUTES--- |
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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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/** |
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* A HashMap of Registers (or groups of Registers), one |
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* for each host we're monitoring. |
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*/ |
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private HashMap _hosts = new HashMap(); |
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//---STATIC ATTRIBUTES--- |
