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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 java.util.ArrayList; |
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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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|
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/** |
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* This Monitor watches the Disks for all machines |
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* |
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* @author $Author: ajm4 $ |
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* @version $Id: Disk__Monitor.java,v 1.5 2001/03/22 00:59:13 ajm4 Exp $ |
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*/ |
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public class Disk__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: 1.5 $"; |
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|
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public final String DESC = "Monitors all host disks."; |
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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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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 HashMap()); |
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} |
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|
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HashMap diskRegisters = (HashMap) _hosts.get(source); |
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|
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// a tempory holder for all the disk attributes we find |
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ArrayList disks = new ArrayList(); |
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|
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// unfortunatly we need to check the whole packet |
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// to find the disks, and then get the data attributes |
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Set packetSet = packet.getSet(); |
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Iterator i = packetSet.iterator(); |
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while (i.hasNext()) { |
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String dataKey = (String) i.next(); |
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if(dataKey.startsWith("packet.disk.p")) { |
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if(!disks.contains(dataKey)) { |
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String diskNumber = ""; |
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|
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// pos is after "packet.disk.p" |
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int pos = 13; |
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while (dataKey.charAt(pos) != '.') { |
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diskNumber = diskNumber + dataKey.charAt(pos); |
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pos++; |
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} |
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|
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// add the disk to our list, with the packet data |
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|
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// used (we won't use this value - but we need it to forget about it ;) |
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disks.add("packet.disk.p" + diskNumber + ".attributes.used"); |
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|
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// device |
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disks.add("packet.disk.p" + diskNumber + ".attributes.name"); |
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String device = packet.getParam("packet.disk.p" + diskNumber + ".attributes.name"); |
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// mount point |
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disks.add("packet.disk.p" + diskNumber + ".attributes.mount"); |
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String mount = packet.getParam("packet.disk.p" + diskNumber + ".attributes.mount"); |
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|
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// these next two will be used to calculate the %age |
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// total |
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disks.add("packet.disk.p" + diskNumber + ".attributes.kbytes"); |
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String total = packet.getParam("packet.disk.p" + diskNumber + ".attributes.kbytes"); |
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// available |
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disks.add("packet.disk.p" + diskNumber + ".attributes.avail"); |
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String avail = packet.getParam("packet.disk.p" + diskNumber + ".attributes.avail"); |
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|
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// *** now process this disk *** |
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|
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// check if we've seen this disk before on a previous run |
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// if not, we need to create a register for it |
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if(!diskRegisters.containsKey(diskNumber)) { |
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diskRegisters.put(diskNumber, new Register(source, _name, mount)); |
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} |
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|
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// get the register for this disk |
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Register reg = (Register) diskRegisters.get(diskNumber); |
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|
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// get the packet data |
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double diskTotal, diskAvail; |
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try { |
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|
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if(total==null || avail==null) { |
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throw new NumberFormatException("Disk data invalid"); |
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} |
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diskTotal = Double.parseDouble(total); |
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diskAvail = Double.parseDouble(avail); |
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} catch (NumberFormatException e) { |
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_logger.write(this.toString(), Logger.WARNING, "Received packet from "+source+" with bad disk information: "+e); |
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// don't try to continue and process, try next disk |
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break; |
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} |
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|
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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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if (option.equals("VALUE")) { |
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useValue = true; |
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} |
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} catch (PropertyNotFoundException e) { |
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// we default to percentage |
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} |
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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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double diskInUse; |
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String type; |
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if(useValue) { |
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// kb disk in use |
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diskInUse = diskTotal - diskAvail; |
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type = "kb"; |
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} else { |
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// % disk in use |
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diskInUse = (1 - (diskAvail / diskTotal)) * 100; |
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type = "%"; |
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} |
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|
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|
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|
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int newThreshold = checkAttributeThreshold(diskInUse, reg); |
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|
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// format the diskInUse to a String |
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NumberFormat nf = NumberFormat.getInstance(); |
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nf.setMaximumFractionDigits(2); |
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nf.setMinimumFractionDigits(2); |
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String strDiskInUse = nf.format(diskInUse); |
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|
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// say which disk had the problem |
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String attributeName = "Disk in use " + type + " on " + mount + " (" + device + ")"; |
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|
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processAlert(newThreshold, attributeName, reg, source, strDiskInUse); |
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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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* 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(double diskInUse, 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(((double) reg.getThreshold(thresholdLevel)) < diskInUse) { |
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return thresholdLevel; |
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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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//---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 = "Disk"; |
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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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//---STATIC ATTRIBUTES--- |
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|
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} |
