client/monitors/CPU__Monitor.java

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

//---IMPORTS---
import java.util.HashMap;
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 CPU load for all machines
 *
 * @author  $Author: tdb1 $
 * @version $Id: CPU__Monitor.java,v 1.23 2001/03/23 02:32:48 tdb1 Exp $
 */
public class CPU__Monitor extends MonitorSkeleton {

//---FINAL ATTRIBUTES---

    /**
     * The current CVS revision of this class
     */
    public final String REVISION = "$Revision: 1.23 $";
    
    /**
     * A description of this monitor
     */
    public final String DESC = "Monitors CPU.";
    
//---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)) {
            HashMap attributeRegisters = new HashMap();
            initAttributeRegsiters(source, attributeRegisters);
            _hosts.put(source, attributeRegisters);
        }

        HashMap attributeRegisters = (HashMap) _hosts.get(source);
        for(int attributeNum = 0; attributeNum < _attributes.length; attributeNum++) {
            Register reg = (Register) attributeRegisters.get(_attributes[attributeNum]);
            // find out the threshold level we're at
            String attribute = _attributes[attributeNum];
            String attributeName = _attributeNames[attributeNum];
            String currentValue = packet.getParam(attribute);
            int newThreshold = checkAttributeThreshold(currentValue, reg);
            processAlert(newThreshold, attributeName, reg, source, currentValue);
        }
    }

    /**
     * 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(String attributeString, Register reg) {
        for(int thresholdLevel = Alert.thresholdLevels.length - 1; thresholdLevel >= 0; thresholdLevel--) {
            if (reg.getThreshold(thresholdLevel) != -1.0) {
                if(attributeString != null) {
                    try {
                        double attribute = Double.parseDouble(attributeString);
                        if (reg.getThreshold(thresholdLevel) < attribute) return thresholdLevel;
                    } catch (NumberFormatException e) {
                        // we got some duff data in the packet, but we shouldn't have
                        _logger.write(toString(), Logger.DEBUG, "possible errenous packet data, should be double value - " + attributeString);
                    }
                }
            }
        }
        return Alert.thresholdNORMAL;
    }
    
    /**
     * Initialises a HashMap of Registers with the current list
     * of attributes. This is only used if we are looking at more
     * than one distinct attribute.
     *
     * @param source the host we are looking at
     * @param attributeRegisters a HashMap to put the new Registers in
     */
    private void initAttributeRegsiters(String source, HashMap attributeRegisters) {
        for(int attributeNum = 0; attributeNum < _attributes.length; attributeNum++) {
            String attributeName = _attributes[attributeNum].substring(_attributes[attributeNum].lastIndexOf(".") + 1);
            attributeRegisters.put(_attributes[attributeNum], new Register(source, _name, attributeName));
        }
    }

//---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 = "CPU";
    
    /**
     * A HashMap of Registers (or groups of Registers), one
     * for each host we're monitoring.
     */
    private HashMap _hosts = new HashMap();
    
    /**
     * An array of attributes which we will be checking.
     */
    private String[] _attributes = { "packet.cpu.user", "packet.cpu.kernel", "packet.cpu.iowait", "packet.cpu.swap" };
    
    /**
     * An array of "nice names" for the attributes in _attributes.
     */
    private String[] _attributeNames = {"User CPU", "Kernel CPU", "I/O Wait CPU", "Swap CPU"};

//---STATIC ATTRIBUTES---

}
Revision:	1.24
Committed:	Tue May 29 17:02:34 2001 UTC (23 years ago) by tdb
Branch:	MAIN
Branch point for:	SERVER_PIRCBOT
Changes since 1.23:	+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 uk.org.iscream.cms.server.client.*;
7	import uk.org.iscream.cms.server.core.*;
8	import uk.org.iscream.cms.server.util.*;
9	import uk.org.iscream.cms.server.componentmanager.*;
10
11	/**
12	* This Monitor watches the CPU load for all machines
13	*
14	* @author $Author: tdb1 $
15	* @version $Id: CPU__Monitor.java,v 1.23 2001/03/23 02:32:48 tdb1 Exp $
16	*/
17	public class CPU__Monitor extends MonitorSkeleton {
18
19	//---FINAL ATTRIBUTES---
20
21	/**
22	* The current CVS revision of this class
23	*/
24	public final String REVISION = "$Revision: 1.23 $";
25
26	/**
27	* A description of this monitor
28	*/
29	public final String DESC = "Monitors CPU.";
30
31	//---STATIC METHODS---
32
33	//---CONSTRUCTORS---
34
35	//---PUBLIC METHODS---
36
37	/**
38	* Analyse a packet of data, and generate an alert if
39	* necessary.
40	*
41	* @param packet the XMLPacket to analyse
42	*/
43	public void analysePacket(XMLPacket packet) {
44	String source = packet.getParam("packet.attributes.machine_name");
45	if (!_hosts.containsKey(source)) {
46	HashMap attributeRegisters = new HashMap();
47	initAttributeRegsiters(source, attributeRegisters);
48	_hosts.put(source, attributeRegisters);
49	}
50
51	HashMap attributeRegisters = (HashMap) _hosts.get(source);
52	for(int attributeNum = 0; attributeNum < _attributes.length; attributeNum++) {
53	Register reg = (Register) attributeRegisters.get(_attributes[attributeNum]);
54	// find out the threshold level we're at
55	String attribute = _attributes[attributeNum];
56	String attributeName = _attributeNames[attributeNum];
57	String currentValue = packet.getParam(attribute);
58	int newThreshold = checkAttributeThreshold(currentValue, reg);
59	processAlert(newThreshold, attributeName, reg, source, currentValue);
60	}
61	}
62
63	/**
64	* Overrides the {@link java.lang.Object#toString() Object.toString()}
65	* method to provide clean logging (every class should have this).
66	*
67	* This uses the uk.org.iscream.cms.server.util.NameFormat class
68	* to format the toString()
69	*
70	* @return the name of this class and its CVS revision
71	*/
72	public String toString() {
73	return FormatName.getName(
74	_name,
75	getClass().getName(),
76	REVISION);
77	}
78
79	/**
80	* return the String representation of what the monitor does
81	*/
82	public String getDescription(){
83	return DESC;
84	}
85
86	//---PRIVATE METHODS---
87
88	/**
89	* Checks a piece of current data, and returns the
90	* threshold it breaches, if any.
91	*
92	* @param attributeString a String representing the current data value
93	* @param reg the Register for the host
94	* @return the threshold level breached, if any
95	*/
96	private int checkAttributeThreshold(String attributeString, Register reg) {
97	for(int thresholdLevel = Alert.thresholdLevels.length - 1; thresholdLevel >= 0; thresholdLevel--) {
98	if (reg.getThreshold(thresholdLevel) != -1.0) {
99	if(attributeString != null) {
100	try {
101	double attribute = Double.parseDouble(attributeString);
102	if (reg.getThreshold(thresholdLevel) < attribute) return thresholdLevel;
103	} catch (NumberFormatException e) {
104	// we got some duff data in the packet, but we shouldn't have
105	_logger.write(toString(), Logger.DEBUG, "possible errenous packet data, should be double value - " + attributeString);
106	}
107	}
108	}
109	}
110	return Alert.thresholdNORMAL;
111	}
112
113	/**
114	* Initialises a HashMap of Registers with the current list
115	* of attributes. This is only used if we are looking at more
116	* than one distinct attribute.
117	*
118	* @param source the host we are looking at
119	* @param attributeRegisters a HashMap to put the new Registers in
120	*/
121	private void initAttributeRegsiters(String source, HashMap attributeRegisters) {
122	for(int attributeNum = 0; attributeNum < _attributes.length; attributeNum++) {
123	String attributeName = _attributes[attributeNum].substring(_attributes[attributeNum].lastIndexOf(".") + 1);
124	attributeRegisters.put(_attributes[attributeNum], new Register(source, _name, attributeName));
125	}
126	}
127
128	//---ACCESSOR/MUTATOR METHODS---
129
130	/**
131	* Returns a reference to a specific Queue for this
132	* monitor. This Queue returns only the data packets
133	* (based on type) that we want too look at.
134	*
135	* @return a reference to a Queue
136	*/
137	protected Queue getQueue() {
138	return MonitorManager.getInstance().getDataQueue();
139	}
140
141	//---ATTRIBUTES---
142
143	/**
144	* This is the friendly identifier of the
145	* component this class is running in.
146	* eg, a Filter may be called "filter1",
147	* If this class does not have an owning
148	* component, a name from the configuration
149	* can be placed here. This name could also
150	* be changed to null for utility classes.
151	*/
152	private String _name = "CPU";
153
154	/**
155	* A HashMap of Registers (or groups of Registers), one
156	* for each host we're monitoring.
157	*/
158	private HashMap _hosts = new HashMap();
159
160	/**
161	* An array of attributes which we will be checking.
162	*/
163	private String[] _attributes = { "packet.cpu.user", "packet.cpu.kernel", "packet.cpu.iowait", "packet.cpu.swap" };
164
165	/**
166	* An array of "nice names" for the attributes in _attributes.
167	*/
168	private String[] _attributeNames = {"User CPU", "Kernel CPU", "I/O Wait CPU", "Swap CPU"};
169
170	//---STATIC ATTRIBUTES---
171
172	}