client/monitors/Process__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 Process Counts for all machines
 *
 * @author  $Author: tdb1 $
 * @version $Id: Process__Monitor.java,v 1.3 2001/03/23 02:32:49 tdb1 Exp $
 */
public class Process__Monitor extends MonitorSkeleton {

//---FINAL ATTRIBUTES---

    /**
     * The current CVS revision of this class
     */
    public final String REVISION = "$Revision: 1.3 $";
    
    /**
     * A description of this monitor
     */
    public final String DESC = "Monitors Process Counts.";
    
//---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 = "Process";
    
    /**
     * 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.processes.total", "packet.processes.cpu", "packet.processes.sleeping", "packet.processes.stopped", "packet.processes.zombie" };
    
    /**
     * An array of "nice names" for the attributes in _attributes.
     */
    private String[] _attributeNames = {"Total Processes", "on CPU Processes", "Sleeping Processes", "Stopped Processes", "Zombie Processes"};

//---STATIC ATTRIBUTES---

}
Revision:	1.4
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 1.3:	+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.
#	User	Rev	Content
1	tdb	1.1	//---PACKAGE DECLARATION---
2	tdb	1.4	package uk.org.iscream.cms.server.client.monitors;
3	tdb	1.1
4			//---IMPORTS---
5			import java.util.HashMap;
6	tdb	1.4	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	tdb	1.1
11			/**
12			* This Monitor watches the Process Counts for all machines
13			*
14	tdb	1.4	* @author $Author: tdb1 $
15			* @version $Id: Process__Monitor.java,v 1.3 2001/03/23 02:32:49 tdb1 Exp $
16	tdb	1.1	*/
17			public class Process__Monitor extends MonitorSkeleton {
18
19			//---FINAL ATTRIBUTES---
20
21			/**
22			* The current CVS revision of this class
23			*/
24	tdb	1.4	public final String REVISION = "$Revision: 1.3 $";
25	tdb	1.1
26	tdb	1.3	/**
27			* A description of this monitor
28			*/
29	tdb	1.1	public final String DESC = "Monitors Process Counts.";
30
31			//---STATIC METHODS---
32
33			//---CONSTRUCTORS---
34
35			//---PUBLIC METHODS---
36	tdb	1.3
37			/**
38			* Analyse a packet of data, and generate an alert if
39			* necessary.
40			*
41			* @param packet the XMLPacket to analyse
42			*/
43	tdb	1.1	public void analysePacket(XMLPacket packet) {
44
45	ajm	1.2	String source = packet.getParam("packet.attributes.machine_name");
46			if (!_hosts.containsKey(source)) {
47			HashMap attributeRegisters = new HashMap();
48			initAttributeRegsiters(source, attributeRegisters);
49			_hosts.put(source, attributeRegisters);
50			}
51
52			HashMap attributeRegisters = (HashMap) _hosts.get(source);
53			for(int attributeNum = 0; attributeNum < _attributes.length; attributeNum++) {
54			Register reg = (Register) attributeRegisters.get(_attributes[attributeNum]);
55			// find out the threshold level we're at
56			String attribute = _attributes[attributeNum];
57			String attributeName = _attributeNames[attributeNum];
58			String currentValue = packet.getParam(attribute);
59			int newThreshold = checkAttributeThreshold(currentValue, reg);
60			processAlert(newThreshold, attributeName, reg, source, currentValue);
61	tdb	1.1	}
62			}
63
64			/**
65			* Overrides the {@link java.lang.Object#toString() Object.toString()}
66			* method to provide clean logging (every class should have this).
67			*
68	tdb	1.4	* This uses the uk.org.iscream.cms.server.util.NameFormat class
69	tdb	1.1	* to format the toString()
70			*
71			* @return the name of this class and its CVS revision
72			*/
73			public String toString() {
74			return FormatName.getName(
75			_name,
76			getClass().getName(),
77			REVISION);
78			}
79
80			/**
81			* return the String representation of what the monitor does
82			*/
83			public String getDescription(){
84			return DESC;
85			}
86
87			//---PRIVATE METHODS---
88	tdb	1.3
89			/**
90			* Checks a piece of current data, and returns the
91			* threshold it breaches, if any.
92			*
93			* @param attributeString a String representing the current data value
94			* @param reg the Register for the host
95			* @return the threshold level breached, if any
96			*/
97	tdb	1.1	private int checkAttributeThreshold(String attributeString, Register reg) {
98			for(int thresholdLevel = Alert.thresholdLevels.length - 1; thresholdLevel >= 0; thresholdLevel--) {
99			if (reg.getThreshold(thresholdLevel) != -1.0) {
100			if(attributeString != null) {
101			try {
102			double attribute = Double.parseDouble(attributeString);
103			if (reg.getThreshold(thresholdLevel) < attribute) return thresholdLevel;
104			} catch (NumberFormatException e) {
105			// we got some duff data in the packet, but we shouldn't have
106			_logger.write(toString(), Logger.DEBUG, "possible errenous packet data, should be double value - " + attributeString);
107			}
108			}
109			}
110			}
111			return Alert.thresholdNORMAL;
112			}
113	tdb	1.3
114			/**
115			* Initialises a HashMap of Registers with the current list
116			* of attributes. This is only used if we are looking at more
117			* than one distinct attribute.
118			*
119			* @param source the host we are looking at
120			* @param attributeRegisters a HashMap to put the new Registers in
121			*/
122	tdb	1.1	private void initAttributeRegsiters(String source, HashMap attributeRegisters) {
123			for(int attributeNum = 0; attributeNum < _attributes.length; attributeNum++) {
124			String attributeName = _attributes[attributeNum].substring(_attributes[attributeNum].lastIndexOf(".") + 1);
125			attributeRegisters.put(_attributes[attributeNum], new Register(source, _name, attributeName));
126			}
127			}
128
129			//---ACCESSOR/MUTATOR METHODS---
130	tdb	1.3
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	ajm	1.2	protected Queue getQueue() {
139			return MonitorManager.getInstance().getDataQueue();
140			}
141	tdb	1.1
142			//---ATTRIBUTES---
143
144			/**
145			* This is the friendly identifier of the
146			* component this class is running in.
147			* eg, a Filter may be called "filter1",
148			* If this class does not have an owning
149			* component, a name from the configuration
150			* can be placed here. This name could also
151			* be changed to null for utility classes.
152			*/
153			private String _name = "Process";
154
155			/**
156	tdb	1.3	* A HashMap of Registers (or groups of Registers), one
157			* for each host we're monitoring.
158	tdb	1.1	*/
159			private HashMap _hosts = new HashMap();
160	tdb	1.3
161			/**
162			* An array of attributes which we will be checking.
163			*/
164	tdb	1.1	private String[] _attributes = { "packet.processes.total", "packet.processes.cpu", "packet.processes.sleeping", "packet.processes.stopped", "packet.processes.zombie" };
165	tdb	1.3
166			/**
167			* An array of "nice names" for the attributes in _attributes.
168			*/
169	tdb	1.1	private String[] _attributeNames = {"Total Processes", "on CPU Processes", "Sleeping Processes", "Stopped Processes", "Zombie Processes"};
170
171			//---STATIC ATTRIBUTES---
172
173			}