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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 Disks for all machines |
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// key prefix |
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String keyPrefix = "packet.disk.p"; |
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// a tempory holder for all the disk attributes we find |
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// a temporary holder for all the disk attributes we find |
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ArrayList disks = new ArrayList(); |
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// unfortunatly we need to check the whole packet |
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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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// nb. use the mount as the key as this is unlikely to change, |
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// unlike diskNumber which could easily change |
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// (diskNumber is based on the order of df's output!) |
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if(!diskRegisters.containsKey(mount)) { |
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diskRegisters.put(mount, new Register(source, _name, mount)); |
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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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Register reg = (Register) diskRegisters.get(mount); |
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// get the packet data |
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double diskTotal, diskAvail; |
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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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// try looking for a mount-point specific thresholdMeasure first |
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String option = _cp.getProperty("Host." + source, "Monitor." + _name + "." + mount + ".thresholdMeasure"); |
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if (option.equals("VALUE")) { |
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useValue = true; |
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} |
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} |
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} catch (PropertyNotFoundException e) { |
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// we default to percentage |
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try { |
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// now look for a more general thresholdMeasure |
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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 f) { |
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// we default to percentage in any case |
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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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double curValue; |
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int newThreshold; |
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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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// kb disk available |
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curValue = diskAvail; |
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// negate check |
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newThreshold = checkAttributeThreshold(curValue, reg, true); |
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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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curValue = (1 - (diskAvail / diskTotal)) * 100; |
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// normal check |
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newThreshold = checkAttributeThreshold(curValue, reg, false); |
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type = "%"; |
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} |
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int newThreshold = checkAttributeThreshold(diskInUse, reg); |
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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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String strCurValue = nf.format(curValue); |
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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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processAlert(newThreshold, attributeName, reg, source, strDiskInUse); |
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processAlert(newThreshold, attributeName, reg, source, strCurValue); |
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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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* 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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* 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 diskInUse the amount of space in use |
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* The option to negate the check can be used in |
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* situations where being *below* the threshold |
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* is an 'alertable' situation. In this specific |
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* case, we'd do this with kb disk checks. |
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* |
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* @param value the current value |
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* @param reg the Register for the host |
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* @param negateCheck whether to negate the check |
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* @return the threshold level breached, if any |
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*/ |
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private int checkAttributeThreshold(double diskInUse, Register reg) { |
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private int checkAttributeThreshold(double value, Register reg, boolean negateCheck) { |
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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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if(!negateCheck) { |
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// normal check - has the value gone *over* the threshold |
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if(((double) reg.getThreshold(thresholdLevel)) < value) { |
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return thresholdLevel; |
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} |
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} |
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else { |
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// negated check - has the value gone *under* the threshold |
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if(((double) reg.getThreshold(thresholdLevel)) > value) { |
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return thresholdLevel; |
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} |
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} |
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} |
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} |
