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: ajm4 $
 * @version $Id: Swap__Monitor.java,v 1.3 2001/03/09 03:30:55 ajm4 Exp $
 */
public class Swap__Monitor extends MonitorSkeleton {

//---FINAL ATTRIBUTES---

    /**
     * The current CVS revision of this class
     */
    public final String REVISION = "$Revision: 1.3 $";
    
    public final String DESC = "Monitors Swap.";
    
//---STATIC METHODS---

//---CONSTRUCTORS---

//---PUBLIC METHODS---

    public void analysePacket(XMLPacket packet) {
        if (packet.getParam("packet.attributes.type").equals("data")) {
            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---

//---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:	1.4
Committed:	Wed Mar 14 23:25:29 2001 UTC (23 years, 2 months ago) by tdb
Branch:	MAIN
Changes since 1.3:	+9 -9 lines
Log Message:	The whole server package structure has been changed. Old Package: uk.ac.ukc.iscream.* New Package: uk.org.iscream.*
#	Content
1	//---PACKAGE DECLARATION---
2	package uk.org.iscream.client.monitors;
3
4	//---IMPORTS---
5	import java.util.HashMap;
6	import java.text.NumberFormat;
7	import uk.org.iscream.client.*;
8	import uk.org.iscream.core.*;
9	import uk.org.iscream.util.*;
10	import uk.org.iscream.componentmanager.*;
11
12	/**
13	* This Monitor watches the Swap for all machines
14	*
15	* @author $Author: ajm4 $
16	* @version $Id: Swap__Monitor.java,v 1.3 2001/03/09 03:30:55 ajm4 Exp $
17	*/
18	public class Swap__Monitor extends MonitorSkeleton {
19
20	//---FINAL ATTRIBUTES---
21
22	/**
23	* The current CVS revision of this class
24	*/
25	public final String REVISION = "$Revision: 1.3 $";
26
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	if (packet.getParam("packet.attributes.type").equals("data")) {
37	String source = packet.getParam("packet.attributes.machine_name");
38	if (!_hosts.containsKey(source)) {
39	_hosts.put(source, new Register(source, _name));
40	}
41
42	Register reg = (Register) _hosts.get(source);
43
44	// find out the threshold level we're at
45	String attributeName = "Swap In Use %";
46
47	// get the packet data
48	double swapTotal, swapFree;
49	try {
50	String total = packet.getParam("packet.swap.total");
51	String free = packet.getParam("packet.swap.free");
52	if(total==null \|\| free==null) {
53	throw new NumberFormatException("Memory data invalid");
54	}
55	swapTotal = Double.parseDouble(total);
56	swapFree = Double.parseDouble(free);
57	} catch (NumberFormatException e) {
58	_logger.write(this.toString(), Logger.WARNING, "Received packet from "+source+" with bad swap information"+e);
59	// don't try to continue and process
60	return;
61	}
62
63	// percentage of memory in use
64	double swapInUse = (1-(swapFree / swapTotal)) * 100;
65	int newThreshold = checkAttributeThreshold(swapInUse, reg);
66
67	// format the memoryInUse to a String
68	NumberFormat nf = NumberFormat.getInstance();
69	nf.setMaximumFractionDigits(2);
70	nf.setMinimumFractionDigits(2);
71	String strSwapInUse = nf.format(swapInUse);
72
73	processAlert(newThreshold, attributeName, reg, source, strSwapInUse);
74
75	}
76	}
77
78	/**
79	* Overrides the {@link java.lang.Object#toString() Object.toString()}
80	* method to provide clean logging (every class should have this).
81	*
82	* This uses the uk.org.iscream.util.NameFormat class
83	* to format the toString()
84	*
85	* @return the name of this class and its CVS revision
86	*/
87	public String toString() {
88	return FormatName.getName(
89	_name,
90	getClass().getName(),
91	REVISION);
92	}
93
94	/**
95	* return the String representation of what the monitor does
96	*/
97	public String getDescription(){
98	return DESC;
99	}
100
101	//---PRIVATE METHODS---
102
103	private int checkAttributeThreshold(double swapInUse, Register reg) {
104	for(int thresholdLevel = Alert.thresholdLevels.length - 1; thresholdLevel >= 0; thresholdLevel--) {
105	if (reg.getThreshold(thresholdLevel) != -1.0) {
106	if(((double) reg.getThreshold(thresholdLevel)) < swapInUse) {
107	return thresholdLevel;
108	}
109	}
110	}
111	return Alert.thresholdNORMAL;
112	}
113
114	//---ACCESSOR/MUTATOR METHODS---
115
116	//---ATTRIBUTES---
117
118	/**
119	* This is the friendly identifier of the
120	* component this class is running in.
121	* eg, a Filter may be called "filter1",
122	* If this class does not have an owning
123	* component, a name from the configuration
124	* can be placed here. This name could also
125	* be changed to null for utility classes.
126	*/
127	private String _name = "Swap";
128
129	/**
130	* A reference to the configuration proxy in use
131	*/
132	private ConfigurationProxy _cp = ConfigurationProxy.getInstance();
133
134	private HashMap _hosts = new HashMap();
135
136	//---STATIC ATTRIBUTES---
137
138	}