client/monitors/Swap__Monitor.java

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

//---IMPORTS---
import java.util.HashMap;
import java.text.NumberFormat;
import uk.org.iscream.cms.server.client.*;
import uk.org.iscream.cms.server.core.*;
import uk.org.iscream.cms.server.util.*;
import uk.org.iscream.cms.server.componentmanager.*;

/**
 * This Monitor watches the Swap for all machines
 *
 * @author  $Author: tdb1 $
 * @version $Id: Swap__Monitor.java,v 1.6 2001/03/23 02:32:49 tdb1 Exp $
 */
public class Swap__Monitor extends MonitorSkeleton {

//---FINAL ATTRIBUTES---

    /**
     * The current CVS revision of this class
     */
    public final String REVISION = "$Revision: 1.6 $";
    
    /**
     * A description of this monitor
     */
    public final String DESC = "Monitors Swap.";
    
//---STATIC METHODS---

//---CONSTRUCTORS---

//---PUBLIC METHODS---
    
    /**
     * Analyse a packet of data, and generate an alert if
     * necessary.
     *
     * @param packet the XMLPacket to analyse
     */
    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.cms.server.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---
    
    /**
     * Checks a piece of current data, and returns the
     * threshold it breaches, if any.
     *
     * @param attributeString a String representing the current data value
     * @param reg the Register for the host
     * @return the threshold level breached, if any
     */
    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---
    
    /**
     * Returns a reference to a specific Queue for this
     * monitor. This Queue returns only the data packets
     * (based on type) that we want too look at.
     *
     * @return a reference to a Queue
     */
    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 HashMap of Registers (or groups of Registers), one
     * for each host we're monitoring.
     */
    private HashMap _hosts = new HashMap();

//---STATIC ATTRIBUTES---

}
Revision:	1.7
Committed:	Tue May 29 17:02:34 2001 UTC (22 years, 11 months ago) by tdb
Branch:	MAIN
Branch point for:	SERVER_PIRCBOT
Changes since 1.6:	+9 -9 lines
Log Message:	Major change in the java package naming. This has been held off for some time now, but it really needed doing. The future packaging of all i-scream products will be; uk.org.iscream.<product>.<subpart>.* In the case of the central monitoring system server this will be; uk.org.iscream.cms.server.* The whole server has been changed to follow this structure, and tested to a smallish extent. Further changes in other parts of the CMS will follow.
#	Content
1	//---PACKAGE DECLARATION---
2	package uk.org.iscream.cms.server.client.monitors;
3
4	//---IMPORTS---
5	import java.util.HashMap;
6	import java.text.NumberFormat;
7	import uk.org.iscream.cms.server.client.*;
8	import uk.org.iscream.cms.server.core.*;
9	import uk.org.iscream.cms.server.util.*;
10	import uk.org.iscream.cms.server.componentmanager.*;
11
12	/**
13	* This Monitor watches the Swap for all machines
14	*
15	* @author $Author: tdb1 $
16	* @version $Id: Swap__Monitor.java,v 1.6 2001/03/23 02:32:49 tdb1 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: 1.6 $";
26
27	/**
28	* A description of this monitor
29	*/
30	public final String DESC = "Monitors Swap.";
31
32	//---STATIC METHODS---
33
34	//---CONSTRUCTORS---
35
36	//---PUBLIC METHODS---
37
38	/**
39	* Analyse a packet of data, and generate an alert if
40	* necessary.
41	*
42	* @param packet the XMLPacket to analyse
43	*/
44	public void analysePacket(XMLPacket packet) {
45	String source = packet.getParam("packet.attributes.machine_name");
46	if (!_hosts.containsKey(source)) {
47	_hosts.put(source, new Register(source, _name));
48	}
49
50	Register reg = (Register) _hosts.get(source);
51
52	// find out the threshold level we're at
53	String attributeName = "Swap In Use %";
54
55	// get the packet data
56	double swapTotal, swapFree;
57	try {
58	String total = packet.getParam("packet.swap.total");
59	String free = packet.getParam("packet.swap.free");
60	if(total==null \|\| free==null) {
61	throw new NumberFormatException("Memory data invalid");
62	}
63	swapTotal = Double.parseDouble(total);
64	swapFree = Double.parseDouble(free);
65	} catch (NumberFormatException e) {
66	_logger.write(this.toString(), Logger.WARNING, "Received packet from "+source+" with bad swap information"+e);
67	// don't try to continue and process
68	return;
69	}
70
71	// percentage of memory in use
72	double swapInUse = (1-(swapFree / swapTotal)) * 100;
73	int newThreshold = checkAttributeThreshold(swapInUse, reg);
74
75	// format the memoryInUse to a String
76	NumberFormat nf = NumberFormat.getInstance();
77	nf.setMaximumFractionDigits(2);
78	nf.setMinimumFractionDigits(2);
79	String strSwapInUse = nf.format(swapInUse);
80
81	processAlert(newThreshold, attributeName, reg, source, strSwapInUse);
82
83	}
84
85	/**
86	* Overrides the {@link java.lang.Object#toString() Object.toString()}
87	* method to provide clean logging (every class should have this).
88	*
89	* This uses the uk.org.iscream.cms.server.util.NameFormat class
90	* to format the toString()
91	*
92	* @return the name of this class and its CVS revision
93	*/
94	public String toString() {
95	return FormatName.getName(
96	_name,
97	getClass().getName(),
98	REVISION);
99	}
100
101	/**
102	* return the String representation of what the monitor does
103	*/
104	public String getDescription(){
105	return DESC;
106	}
107
108	//---PRIVATE METHODS---
109
110	/**
111	* Checks a piece of current data, and returns the
112	* threshold it breaches, if any.
113	*
114	* @param attributeString a String representing the current data value
115	* @param reg the Register for the host
116	* @return the threshold level breached, if any
117	*/
118	private int checkAttributeThreshold(double swapInUse, Register reg) {
119	for(int thresholdLevel = Alert.thresholdLevels.length - 1; thresholdLevel >= 0; thresholdLevel--) {
120	if (reg.getThreshold(thresholdLevel) != -1.0) {
121	if(((double) reg.getThreshold(thresholdLevel)) < swapInUse) {
122	return thresholdLevel;
123	}
124	}
125	}
126	return Alert.thresholdNORMAL;
127	}
128
129	//---ACCESSOR/MUTATOR METHODS---
130
131	/**
132	* Returns a reference to a specific Queue for this
133	* monitor. This Queue returns only the data packets
134	* (based on type) that we want too look at.
135	*
136	* @return a reference to a Queue
137	*/
138	protected Queue getQueue() {
139	return MonitorManager.getInstance().getDataQueue();
140	}
141
142
143	//---ATTRIBUTES---
144
145	/**
146	* This is the friendly identifier of the
147	* component this class is running in.
148	* eg, a Filter may be called "filter1",
149	* If this class does not have an owning
150	* component, a name from the configuration
151	* can be placed here. This name could also
152	* be changed to null for utility classes.
153	*/
154	private String _name = "Swap";
155
156	/**
157	* A HashMap of Registers (or groups of Registers), one
158	* for each host we're monitoring.
159	*/
160	private HashMap _hosts = new HashMap();
161
162	//---STATIC ATTRIBUTES---
163
164	}