client/monitors/Swap__Monitor.java

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

//---IMPORTS---
import java.util.HashMap;
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 Swap for all machines
 *
 * @author  $Author: tdb1 $
 * @version $Id: Swap__Monitor.java,v 1.4 2001/03/14 23:25:29 tdb1 Exp $
 */
public class Swap__Monitor extends MonitorSkeleton {

//---FINAL ATTRIBUTES---

    /**
     * The current CVS revision of this class
     */
    public final String REVISION = "$Revision: 1.4 $";
    
    public final String DESC = "Monitors Swap.";
    
//---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 Register(source, _name));
        }

        Register reg = (Register) _hosts.get(source);

        // find out the threshold level we're at
        String attributeName = "Swap In Use %";

        // get the packet data
        double swapTotal, swapFree;
        try {
            String total = packet.getParam("packet.swap.total");
            String free = packet.getParam("packet.swap.free");
            if(total==null || free==null) {
                throw new NumberFormatException("Memory data invalid");
            }
            swapTotal = Double.parseDouble(total);
            swapFree = Double.parseDouble(free);
        } catch (NumberFormatException e) {
            _logger.write(this.toString(), Logger.WARNING, "Received packet from "+source+" with bad swap information"+e);
            // don't try to continue and process
            return;
        }

        // percentage of memory in use
        double swapInUse = (1-(swapFree / swapTotal)) * 100;
        int newThreshold = checkAttributeThreshold(swapInUse, reg);

        // format the memoryInUse to a String
        NumberFormat nf = NumberFormat.getInstance();
        nf.setMaximumFractionDigits(2);
        nf.setMinimumFractionDigits(2);
        String strSwapInUse = nf.format(swapInUse);

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

    /**
     * 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 swapInUse, Register reg) {
        for(int thresholdLevel = Alert.thresholdLevels.length - 1; thresholdLevel >= 0; thresholdLevel--) {
            if (reg.getThreshold(thresholdLevel) != -1.0) {
                if(((double) reg.getThreshold(thresholdLevel)) < swapInUse) {
                    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 = "Swap";
    
    /**
     * A reference to the configuration proxy in use
     */
    private ConfigurationProxy _cp = ConfigurationProxy.getInstance();

    private HashMap _hosts = new HashMap();

//---STATIC ATTRIBUTES---

}
Revision:	1.5
Committed:	Thu Mar 22 17:57:06 2001 UTC (23 years, 2 months ago) by ajm
Branch:	MAIN
Changes since 1.4:	+44 -41 lines
Log Message:	Modified to use the new style queuing in the local client
#	User	Rev	Content
1	tdb	1.1	//---PACKAGE DECLARATION---
2	tdb	1.4	package uk.org.iscream.client.monitors;
3	tdb	1.1
4			//---IMPORTS---
5			import java.util.HashMap;
6	tdb	1.2	import java.text.NumberFormat;
7	tdb	1.4	import uk.org.iscream.client.*;
8			import uk.org.iscream.core.*;
9			import uk.org.iscream.util.*;
10			import uk.org.iscream.componentmanager.*;
11	tdb	1.1
12			/**
13			* This Monitor watches the Swap for all machines
14			*
15	ajm	1.5	* @author $Author: tdb1 $
16			* @version $Id: Swap__Monitor.java,v 1.4 2001/03/14 23:25:29 tdb1 Exp $
17	tdb	1.1	*/
18			public class Swap__Monitor extends MonitorSkeleton {
19
20			//---FINAL ATTRIBUTES---
21
22			/**
23			* The current CVS revision of this class
24			*/
25	ajm	1.5	public final String REVISION = "$Revision: 1.4 $";
26	tdb	1.1
27			public final String DESC = "Monitors Swap.";
28
29			//---STATIC METHODS---
30
31			//---CONSTRUCTORS---
32
33			//---PUBLIC METHODS---
34
35			public void analysePacket(XMLPacket packet) {
36	ajm	1.5	String source = packet.getParam("packet.attributes.machine_name");
37			if (!_hosts.containsKey(source)) {
38			_hosts.put(source, new Register(source, _name));
39			}
40
41			Register reg = (Register) _hosts.get(source);
42
43			// find out the threshold level we're at
44			String attributeName = "Swap In Use %";
45
46			// get the packet data
47			double swapTotal, swapFree;
48			try {
49			String total = packet.getParam("packet.swap.total");
50			String free = packet.getParam("packet.swap.free");
51			if(total==null \|\| free==null) {
52			throw new NumberFormatException("Memory data invalid");
53	tdb	1.1	}
54	ajm	1.5	swapTotal = Double.parseDouble(total);
55			swapFree = Double.parseDouble(free);
56			} catch (NumberFormatException e) {
57			_logger.write(this.toString(), Logger.WARNING, "Received packet from "+source+" with bad swap information"+e);
58			// don't try to continue and process
59			return;
60			}
61
62			// percentage of memory in use
63			double swapInUse = (1-(swapFree / swapTotal)) * 100;
64			int newThreshold = checkAttributeThreshold(swapInUse, reg);
65
66			// format the memoryInUse to a String
67			NumberFormat nf = NumberFormat.getInstance();
68			nf.setMaximumFractionDigits(2);
69			nf.setMinimumFractionDigits(2);
70			String strSwapInUse = nf.format(swapInUse);
71
72			processAlert(newThreshold, attributeName, reg, source, strSwapInUse);
73	tdb	1.1
74			}
75
76			/**
77			* Overrides the {@link java.lang.Object#toString() Object.toString()}
78			* method to provide clean logging (every class should have this).
79			*
80	tdb	1.4	* This uses the uk.org.iscream.util.NameFormat class
81	tdb	1.1	* to format the toString()
82			*
83			* @return the name of this class and its CVS revision
84			*/
85			public String toString() {
86			return FormatName.getName(
87			_name,
88			getClass().getName(),
89			REVISION);
90			}
91
92			/**
93			* return the String representation of what the monitor does
94			*/
95			public String getDescription(){
96			return DESC;
97			}
98
99			//---PRIVATE METHODS---
100
101			private int checkAttributeThreshold(double swapInUse, Register reg) {
102			for(int thresholdLevel = Alert.thresholdLevels.length - 1; thresholdLevel >= 0; thresholdLevel--) {
103			if (reg.getThreshold(thresholdLevel) != -1.0) {
104			if(((double) reg.getThreshold(thresholdLevel)) < swapInUse) {
105			return thresholdLevel;
106			}
107			}
108			}
109			return Alert.thresholdNORMAL;
110			}
111
112			//---ACCESSOR/MUTATOR METHODS---
113	ajm	1.5
114			protected Queue getQueue() {
115			return MonitorManager.getInstance().getDataQueue();
116			}
117
118	tdb	1.1
119			//---ATTRIBUTES---
120
121			/**
122			* This is the friendly identifier of the
123			* component this class is running in.
124			* eg, a Filter may be called "filter1",
125			* If this class does not have an owning
126			* component, a name from the configuration
127			* can be placed here. This name could also
128			* be changed to null for utility classes.
129			*/
130			private String _name = "Swap";
131
132			/**
133			* A reference to the configuration proxy in use
134			*/
135			private ConfigurationProxy _cp = ConfigurationProxy.getInstance();
136
137			private HashMap _hosts = new HashMap();
138
139			//---STATIC ATTRIBUTES---
140
141			}