client/monitors/Disk__Monitor.java

//---PACKAGE DECLARATION---
package uk.org.iscream.client.monitors;

//---IMPORTS---
import java.util.HashMap;
import java.util.ArrayList;
import java.util.Set;
import java.util.Iterator;
import java.text.NumberFormat;
import uk.org.iscream.client.*;
import uk.org.iscream.core.*;
import uk.org.iscream.util.*;
import uk.org.iscream.componentmanager.*;

/**
 * This Monitor watches the Disks for all machines
 *
 * @author  $Author: ajm4 $
 * @version $Id: Disk__Monitor.java,v 1.6 2001/03/22 01:51:27 ajm4 Exp $
 */
public class Disk__Monitor extends MonitorSkeleton {

//---FINAL ATTRIBUTES---

    /**
     * The current CVS revision of this class
     */
    public final String REVISION = "$Revision: 1.6 $";
    
    public final String DESC = "Monitors all host disks.";
    
//---STATIC METHODS---

//---CONSTRUCTORS---

//---PUBLIC METHODS---

    public void analysePacket(XMLPacket packet) {
        String source = packet.getParam("packet.attributes.machine_name");
        if (!_hosts.containsKey(source)) {
            _hosts.put(source, new HashMap());
        }

        HashMap diskRegisters = (HashMap) _hosts.get(source);

        // a tempory holder for all the disk attributes we find
        ArrayList disks = new ArrayList();

        // unfortunatly we need to check the whole packet
        // to find the disks, and then get the data attributes
        Set packetSet = packet.getSet();
        Iterator i = packetSet.iterator();
        while (i.hasNext()) {
            String dataKey = (String) i.next();
            if(dataKey.startsWith("packet.disk.p")) {
                if(!disks.contains(dataKey)) {
                    String diskNumber = "";

                    // pos is after "packet.disk.p"
                    int pos = 13;
                    while (dataKey.charAt(pos) != '.') {
                        diskNumber = diskNumber + dataKey.charAt(pos);
                        pos++;
                    }

                    // add the disk to our list, with the packet data

                    // used (we won't use this value - but we need it to forget about it ;)
                    disks.add("packet.disk.p" + diskNumber + ".attributes.used");

                    // device
                    disks.add("packet.disk.p" + diskNumber + ".attributes.name");
                    String device = packet.getParam("packet.disk.p" + diskNumber + ".attributes.name");
                    // mount point
                    disks.add("packet.disk.p" + diskNumber + ".attributes.mount");
                    String mount = packet.getParam("packet.disk.p" + diskNumber + ".attributes.mount");

                    // these next two will be used to calculate the %age
                    // total
                    disks.add("packet.disk.p" + diskNumber + ".attributes.kbytes");
                    String total = packet.getParam("packet.disk.p" + diskNumber + ".attributes.kbytes");
                    // available
                    disks.add("packet.disk.p" + diskNumber + ".attributes.avail");
                    String avail = packet.getParam("packet.disk.p" + diskNumber + ".attributes.avail");

                    // *** now process this disk ***

                    // check if we've seen this disk before on a previous run
                    // if not, we need to create a register for it
                    if(!diskRegisters.containsKey(diskNumber)) {
                        diskRegisters.put(diskNumber, new Register(source, _name, mount));
                    }

                    // get the register for this disk
                    Register reg = (Register) diskRegisters.get(diskNumber);

                    // get the packet data
                    double diskTotal, diskAvail;
                    try {

                        if(total==null || avail==null) {
                            throw new NumberFormatException("Disk data invalid");
                        }
                        diskTotal = Double.parseDouble(total);
                        diskAvail = Double.parseDouble(avail);
                    } catch (NumberFormatException e) {
                        _logger.write(this.toString(), Logger.WARNING, "Received packet from "+source+" with bad disk information: "+e);
                        // don't try to continue and process, try next disk
                        break;
                    }

                    boolean useValue = false;
                    try {
                        String option = _cp.getProperty("Host." + source, "Monitor." + _name + ".thresholdMeasure");
                        if (option.equals("VALUE")) {
                            useValue = true;
                        }                            
                    } catch (PropertyNotFoundException e) {
                        // we default to percentage
                    }

                    // this  bit determines if the disk check is a % check
                    // or a kb check
                    double diskInUse;
                    String type;
                    if(useValue) {
                        // kb disk in use
                        diskInUse = diskTotal - diskAvail;
                        type = "kb";
                    } else {
                        // % disk in use
                        diskInUse = (1 - (diskAvail / diskTotal)) * 100;
                        type = "%";
                    }


                    int newThreshold = checkAttributeThreshold(diskInUse, reg);

                    // format the diskInUse to a String
                    NumberFormat nf = NumberFormat.getInstance();
                    nf.setMaximumFractionDigits(2);
                    nf.setMinimumFractionDigits(2);
                    String strDiskInUse = nf.format(diskInUse);

                    // say which disk had the problem
                    String attributeName = "Disk in use " + type + " on " + mount + " (" + device + ")";

                    processAlert(newThreshold, attributeName, reg, source, strDiskInUse);
                }
            }
        }
    }

    /**
     * Overrides the {@link java.lang.Object#toString() Object.toString()}
     * method to provide clean logging (every class should have this).
     *
     * This uses the uk.org.iscream.util.NameFormat class
     * to format the toString()
     *
     * @return the name of this class and its CVS revision
     */
    public String toString() {
        return FormatName.getName(
            _name,
            getClass().getName(),
            REVISION);
    }

    /**
     * return the String representation of what the monitor does
     */
    public String getDescription(){
        return DESC;
    }

//---PRIVATE METHODS---

    private int checkAttributeThreshold(double diskInUse, Register reg) {
        for(int thresholdLevel = Alert.thresholdLevels.length - 1; thresholdLevel >= 0; thresholdLevel--) {
            if (reg.getThreshold(thresholdLevel) != -1.0) {
                if(((double) reg.getThreshold(thresholdLevel)) < diskInUse) {
                    return thresholdLevel;
                }
            }
        }
        return Alert.thresholdNORMAL;
    }

//---ACCESSOR/MUTATOR METHODS---
    
    protected Queue getQueue() {
        return MonitorManager.getInstance().getDataQueue();
    }
    
//---ATTRIBUTES---

    /**
     * This is the friendly identifier of the
     * component this class is running in.
     * eg, a Filter may be called "filter1",
     * If this class does not have an owning
     * component,  a name from the configuration
     * can be placed here.  This name could also
     * be changed to null for utility classes.
     */
    private String _name = "Disk";
    
    /**
     * A reference to the configuration proxy in use
     */
    private ConfigurationProxy _cp = ConfigurationProxy.getInstance();

    private HashMap _hosts = new HashMap();

//---STATIC ATTRIBUTES---

}
Revision:	1.7
Committed:	Thu Mar 22 17:57:05 2001 UTC (23 years, 1 month ago) by ajm
Branch:	MAIN
Changes since 1.6:	+114 -112 lines
Log Message:	Modified to use the new style queuing in the local client
#	User	Rev	Content
1	ajm	1.1	//---PACKAGE DECLARATION---
2	tdb	1.3	package uk.org.iscream.client.monitors;
3	ajm	1.1
4			//---IMPORTS---
5			import java.util.HashMap;
6			import java.util.ArrayList;
7			import java.util.Set;
8			import java.util.Iterator;
9			import java.text.NumberFormat;
10	tdb	1.3	import uk.org.iscream.client.*;
11			import uk.org.iscream.core.*;
12			import uk.org.iscream.util.*;
13			import uk.org.iscream.componentmanager.*;
14	ajm	1.1
15			/**
16			* This Monitor watches the Disks for all machines
17			*
18	ajm	1.5	* @author $Author: ajm4 $
19	ajm	1.7	* @version $Id: Disk__Monitor.java,v 1.6 2001/03/22 01:51:27 ajm4 Exp $
20	ajm	1.1	*/
21			public class Disk__Monitor extends MonitorSkeleton {
22
23			//---FINAL ATTRIBUTES---
24
25			/**
26			* The current CVS revision of this class
27			*/
28	ajm	1.7	public final String REVISION = "$Revision: 1.6 $";
29	ajm	1.1
30			public final String DESC = "Monitors all host disks.";
31
32			//---STATIC METHODS---
33
34			//---CONSTRUCTORS---
35
36			//---PUBLIC METHODS---
37
38			public void analysePacket(XMLPacket packet) {
39	ajm	1.7	String source = packet.getParam("packet.attributes.machine_name");
40			if (!_hosts.containsKey(source)) {
41			_hosts.put(source, new HashMap());
42			}
43
44			HashMap diskRegisters = (HashMap) _hosts.get(source);
45
46			// a tempory holder for all the disk attributes we find
47			ArrayList disks = new ArrayList();
48
49			// unfortunatly we need to check the whole packet
50			// to find the disks, and then get the data attributes
51			Set packetSet = packet.getSet();
52			Iterator i = packetSet.iterator();
53			while (i.hasNext()) {
54			String dataKey = (String) i.next();
55			if(dataKey.startsWith("packet.disk.p")) {
56			if(!disks.contains(dataKey)) {
57			String diskNumber = "";
58
59			// pos is after "packet.disk.p"
60			int pos = 13;
61			while (dataKey.charAt(pos) != '.') {
62			diskNumber = diskNumber + dataKey.charAt(pos);
63			pos++;
64			}
65
66			// add the disk to our list, with the packet data
67
68			// used (we won't use this value - but we need it to forget about it ;)
69			disks.add("packet.disk.p" + diskNumber + ".attributes.used");
70
71			// device
72			disks.add("packet.disk.p" + diskNumber + ".attributes.name");
73			String device = packet.getParam("packet.disk.p" + diskNumber + ".attributes.name");
74			// mount point
75			disks.add("packet.disk.p" + diskNumber + ".attributes.mount");
76			String mount = packet.getParam("packet.disk.p" + diskNumber + ".attributes.mount");
77
78			// these next two will be used to calculate the %age
79			// total
80			disks.add("packet.disk.p" + diskNumber + ".attributes.kbytes");
81			String total = packet.getParam("packet.disk.p" + diskNumber + ".attributes.kbytes");
82			// available
83			disks.add("packet.disk.p" + diskNumber + ".attributes.avail");
84			String avail = packet.getParam("packet.disk.p" + diskNumber + ".attributes.avail");
85
86			// * now process this disk *
87
88			// check if we've seen this disk before on a previous run
89			// if not, we need to create a register for it
90			if(!diskRegisters.containsKey(diskNumber)) {
91			diskRegisters.put(diskNumber, new Register(source, _name, mount));
92			}
93
94			// get the register for this disk
95			Register reg = (Register) diskRegisters.get(diskNumber);
96
97			// get the packet data
98			double diskTotal, diskAvail;
99			try {
100
101			if(total==null \|\| avail==null) {
102			throw new NumberFormatException("Disk data invalid");
103	ajm	1.2	}
104	ajm	1.7	diskTotal = Double.parseDouble(total);
105			diskAvail = Double.parseDouble(avail);
106			} catch (NumberFormatException e) {
107			_logger.write(this.toString(), Logger.WARNING, "Received packet from "+source+" with bad disk information: "+e);
108			// don't try to continue and process, try next disk
109			break;
110			}
111	ajm	1.2
112	ajm	1.7	boolean useValue = false;
113			try {
114			String option = _cp.getProperty("Host." + source, "Monitor." + _name + ".thresholdMeasure");
115			if (option.equals("VALUE")) {
116			useValue = true;
117			}
118			} catch (PropertyNotFoundException e) {
119			// we default to percentage
120			}
121	ajm	1.2
122	ajm	1.7	// this bit determines if the disk check is a % check
123			// or a kb check
124			double diskInUse;
125			String type;
126			if(useValue) {
127			// kb disk in use
128			diskInUse = diskTotal - diskAvail;
129			type = "kb";
130			} else {
131			// % disk in use
132			diskInUse = (1 - (diskAvail / diskTotal)) * 100;
133			type = "%";
134	ajm	1.1	}
135	ajm	1.7
136
137
138			int newThreshold = checkAttributeThreshold(diskInUse, reg);
139
140			// format the diskInUse to a String
141			NumberFormat nf = NumberFormat.getInstance();
142			nf.setMaximumFractionDigits(2);
143			nf.setMinimumFractionDigits(2);
144			String strDiskInUse = nf.format(diskInUse);
145
146			// say which disk had the problem
147			String attributeName = "Disk in use " + type + " on " + mount + " (" + device + ")";
148
149			processAlert(newThreshold, attributeName, reg, source, strDiskInUse);
150	ajm	1.1	}
151			}
152			}
153			}
154
155			/**
156			* Overrides the {@link java.lang.Object#toString() Object.toString()}
157			* method to provide clean logging (every class should have this).
158			*
159	tdb	1.3	* This uses the uk.org.iscream.util.NameFormat class
160	ajm	1.1	* to format the toString()
161			*
162			* @return the name of this class and its CVS revision
163			*/
164			public String toString() {
165			return FormatName.getName(
166			_name,
167			getClass().getName(),
168			REVISION);
169			}
170
171			/**
172			* return the String representation of what the monitor does
173			*/
174			public String getDescription(){
175			return DESC;
176			}
177
178			//---PRIVATE METHODS---
179
180			private int checkAttributeThreshold(double diskInUse, Register reg) {
181			for(int thresholdLevel = Alert.thresholdLevels.length - 1; thresholdLevel >= 0; thresholdLevel--) {
182			if (reg.getThreshold(thresholdLevel) != -1.0) {
183			if(((double) reg.getThreshold(thresholdLevel)) < diskInUse) {
184			return thresholdLevel;
185			}
186			}
187			}
188			return Alert.thresholdNORMAL;
189			}
190
191			//---ACCESSOR/MUTATOR METHODS---
192	ajm	1.7
193			protected Queue getQueue() {
194			return MonitorManager.getInstance().getDataQueue();
195			}
196
197	ajm	1.1	//---ATTRIBUTES---
198
199			/**
200			* This is the friendly identifier of the
201			* component this class is running in.
202			* eg, a Filter may be called "filter1",
203			* If this class does not have an owning
204			* component, a name from the configuration
205			* can be placed here. This name could also
206			* be changed to null for utility classes.
207			*/
208			private String _name = "Disk";
209
210			/**
211			* A reference to the configuration proxy in use
212			*/
213			private ConfigurationProxy _cp = ConfigurationProxy.getInstance();
214
215			private HashMap _hosts = new HashMap();
216
217			//---STATIC ATTRIBUTES---
218
219			}