client/alerters/EMail__Alerter.java

//---PACKAGE DECLARATION---
package uk.ac.ukc.iscream.client.alerters;

//---IMPORTS---
import uk.ac.ukc.iscream.client.*;
import uk.ac.ukc.iscream.core.*;
import uk.ac.ukc.iscream.util.*;
import uk.ac.ukc.iscream.componentmanager.*;

import java.util.*;
import java.io.*;

/**
 * This Alert sends by e-mail.
 *
 * @author  $Author: tdb1 $
 * @version $Id: EMail__Alerter.java,v 1.2 2001/03/01 23:45:21 tdb1 Exp $
 */
public class EMail__Alerter implements PluginAlerter {

//---FINAL ATTRIBUTES---

    /**
     * The current CVS revision of this class
     */
    public final String REVISION = "$Revision: 1.2 $";
    
    public final String DESC = "Sends alerts by e-mail";
    
//---STATIC METHODS---

//---CONSTRUCTORS---

    public EMail__Alerter() {
        // get the configuration for this alerter
        Configuration config = ReferenceManager.getInstance().getCM().getConfiguration(_name);
        
        // an integer value
        _level = Integer.parseInt(config.getProperty("Alerter.EMail.level"));
        // a semi-colon seperated list of destination addresses
        _destList = config.getProperty("Alerter.EMail.destList");
        // a single from address
        _sender = config.getProperty("Alerter.EMail.sender");
        // the fqdn of an smtp server
        _smtpServer = config.getProperty("Alerter.EMail.smtpServer");
        // a subject with the following: %level% and %message%
        // eg, "i-scream e-mail alert: level %level%, %message%"
        _subject = config.getProperty("Alerter.EMail.subject");
        // a message body with the following: %level% and %message%
        _message = config.getProperty("Alerter.EMail.message");
    }

//---PUBLIC METHODS---

    public void sendAlert(Alert alert) {
        // only send if it's equal (or above) our level
        if(alert.getLevel() >= _level) {
            // sort out the subject
            String subject = _subject;
            subject = StringUtils.replaceText(subject, "%level%", String.valueOf(alert.getLevel()));
            subject = StringUtils.replaceText(subject, "%value%", alert.getValue());
            subject = StringUtils.replaceText(subject, "%thresholdValue%", alert.getThresholdValue());
            subject = StringUtils.replaceText(subject, "%attributeName%", alert.getAttributeName());
            
            // sort out the message body
            String message = _message;
            message = StringUtils.replaceText(message, "%level%", String.valueOf(alert.getLevel()));
            message = StringUtils.replaceText(message, "%value%", alert.getValue());
            message = StringUtils.replaceText(message, "%thresholdValue%", alert.getThresholdValue());
            message = StringUtils.replaceText(message, "%attributeName%", alert.getAttributeName());
            
            try {
                // create SMTP message
                Smtp smtp = new Smtp(_smtpServer);
                // set our sender
                smtp.setSender(_sender);
                
                // set the to list
                StringTokenizer st = new StringTokenizer(_destList, ";");
                while (st.hasMoreTokens()) {
                    smtp.setTo(st.nextToken());
                }
     
                // prepare to print the message            
                PrintWriter out = smtp.getOutputStream();
                out.println("Subject: "+subject);
                out.println();
                
                // send the message
                out.println(message);
                smtp.sendMessage();
                smtp.close();
            }
            catch(IOException e) {
                _logger.write(toString(), Logger.ERROR, "Error whilst sending message: "+e);
            }
        }
    }

    /**
     * Overrides the {@link java.lang.Object#toString() Object.toString()}
     * method to provide clean logging (every class should have this).
     *
     * This uses the uk.ac.ukc.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 filter does
     */
    public String getDescription(){
        return DESC;
    }

//---PRIVATE METHODS---

//---ACCESSOR/MUTATOR METHODS---

//---ATTRIBUTES---

    // an integer value
    private int _level;
    
    // a semi-colon seperated list of destination addresses
    private String _destList;
    
    // a single sender address
    private String _sender;
    
    // the fqdn of an smtp server
    private String _smtpServer;
    
    // a subject with the following: %level% and %message%
    // eg, "i-scream e-mail alert: level %level%, %message%"
    private String _subject;

    // a message body with the following: %level% and %message%
    private String _message;

    /**
     * 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 = ClientMain.NAME;

    /**
     * This holds a reference to the
     * system logger that is being used.
     */
    private Logger _logger = ReferenceManager.getInstance().getLogger();

//---STATIC ATTRIBUTES---

}
Revision:	1.3
Committed:	Fri Mar 2 00:14:12 2001 UTC (23 years, 2 months ago) by tdb
Branch:	MAIN
Changes since 1.2:	+8 -4 lines
Log Message:	Modified to fit with the new Alert object.
#	User	Rev	Content
1	tdb	1.1	//---PACKAGE DECLARATION---
2			package uk.ac.ukc.iscream.client.alerters;
3
4			//---IMPORTS---
5			import uk.ac.ukc.iscream.client.*;
6			import uk.ac.ukc.iscream.core.*;
7			import uk.ac.ukc.iscream.util.*;
8			import uk.ac.ukc.iscream.componentmanager.*;
9
10	tdb	1.2	import java.util.*;
11			import java.io.*;
12
13	tdb	1.1	/**
14			* This Alert sends by e-mail.
15			*
16	tdb	1.2	* @author $Author: tdb1 $
17	tdb	1.3	* @version $Id: EMail__Alerter.java,v 1.2 2001/03/01 23:45:21 tdb1 Exp $
18	tdb	1.1	*/
19	tdb	1.2	public class EMail__Alerter implements PluginAlerter {
20	tdb	1.1
21			//---FINAL ATTRIBUTES---
22
23			/**
24			* The current CVS revision of this class
25			*/
26	tdb	1.3	public final String REVISION = "$Revision: 1.2 $";
27	tdb	1.1
28			public final String DESC = "Sends alerts by e-mail";
29
30			//---STATIC METHODS---
31
32			//---CONSTRUCTORS---
33
34	tdb	1.2	public EMail__Alerter() {
35			// get the configuration for this alerter
36			Configuration config = ReferenceManager.getInstance().getCM().getConfiguration(_name);
37
38			// an integer value
39			_level = Integer.parseInt(config.getProperty("Alerter.EMail.level"));
40			// a semi-colon seperated list of destination addresses
41			_destList = config.getProperty("Alerter.EMail.destList");
42			// a single from address
43			_sender = config.getProperty("Alerter.EMail.sender");
44			// the fqdn of an smtp server
45			_smtpServer = config.getProperty("Alerter.EMail.smtpServer");
46			// a subject with the following: %level% and %message%
47			// eg, "i-scream e-mail alert: level %level%, %message%"
48			_subject = config.getProperty("Alerter.EMail.subject");
49			// a message body with the following: %level% and %message%
50			_message = config.getProperty("Alerter.EMail.message");
51			}
52
53	tdb	1.1	//---PUBLIC METHODS---
54
55			public void sendAlert(Alert alert) {
56	tdb	1.2	// only send if it's equal (or above) our level
57			if(alert.getLevel() >= _level) {
58			// sort out the subject
59			String subject = _subject;
60			subject = StringUtils.replaceText(subject, "%level%", String.valueOf(alert.getLevel()));
61	tdb	1.3	subject = StringUtils.replaceText(subject, "%value%", alert.getValue());
62			subject = StringUtils.replaceText(subject, "%thresholdValue%", alert.getThresholdValue());
63			subject = StringUtils.replaceText(subject, "%attributeName%", alert.getAttributeName());
64	tdb	1.2
65			// sort out the message body
66			String message = _message;
67			message = StringUtils.replaceText(message, "%level%", String.valueOf(alert.getLevel()));
68	tdb	1.3	message = StringUtils.replaceText(message, "%value%", alert.getValue());
69			message = StringUtils.replaceText(message, "%thresholdValue%", alert.getThresholdValue());
70			message = StringUtils.replaceText(message, "%attributeName%", alert.getAttributeName());
71	tdb	1.2
72			try {
73			// create SMTP message
74			Smtp smtp = new Smtp(_smtpServer);
75			// set our sender
76			smtp.setSender(_sender);
77
78			// set the to list
79			StringTokenizer st = new StringTokenizer(_destList, ";");
80			while (st.hasMoreTokens()) {
81			smtp.setTo(st.nextToken());
82			}
83
84			// prepare to print the message
85			PrintWriter out = smtp.getOutputStream();
86			out.println("Subject: "+subject);
87			out.println();
88
89			// send the message
90			out.println(message);
91			smtp.sendMessage();
92			smtp.close();
93			}
94			catch(IOException e) {
95			_logger.write(toString(), Logger.ERROR, "Error whilst sending message: "+e);
96			}
97			}
98	tdb	1.1	}
99
100			/**
101			* Overrides the {@link java.lang.Object#toString() Object.toString()}
102			* method to provide clean logging (every class should have this).
103			*
104			* This uses the uk.ac.ukc.iscream.util.NameFormat class
105			* to format the toString()
106			*
107			* @return the name of this class and its CVS revision
108			*/
109			public String toString() {
110			return FormatName.getName(
111			_name,
112			getClass().getName(),
113			REVISION);
114			}
115
116			/**
117			* return the String representation of what the filter does
118			*/
119			public String getDescription(){
120			return DESC;
121			}
122
123			//---PRIVATE METHODS---
124
125			//---ACCESSOR/MUTATOR METHODS---
126
127			//---ATTRIBUTES---
128	tdb	1.2
129			// an integer value
130			private int _level;
131
132			// a semi-colon seperated list of destination addresses
133			private String _destList;
134
135			// a single sender address
136			private String _sender;
137
138			// the fqdn of an smtp server
139			private String _smtpServer;
140
141			// a subject with the following: %level% and %message%
142			// eg, "i-scream e-mail alert: level %level%, %message%"
143			private String _subject;
144
145			// a message body with the following: %level% and %message%
146			private String _message;
147	tdb	1.1
148			/**
149			* This is the friendly identifier of the
150			* component this class is running in.
151			* eg, a Filter may be called "filter1",
152			* If this class does not have an owning
153			* component, a name from the configuration
154			* can be placed here. This name could also
155			* be changed to null for utility classes.
156			*/
157			private String _name = ClientMain.NAME;
158
159			/**
160			* This holds a reference to the
161			* system logger that is being used.
162			*/
163			private Logger _logger = ReferenceManager.getInstance().getLogger();
164
165			//---STATIC ATTRIBUTES---
166
167			}