server/filtermanager/FilterManager.java

//---PACKAGE DECLARATION---
package uk.ac.ukc.iscream.filtermanager;

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

/**
 * The FilterManager handles initialisation
 * of hosts with the system, allowing hosts to
 * gain their configuration and a hook to a Filter 
 * to talk to.
 *
 * @author  $Author: ajm4 $
 * @version $Id: FilterManager.java,v 1.13 2000/12/12 19:55:45 ajm4 Exp $
 */
public class FilterManager implements Component {

//---FINAL ATTRIBUTES---

    /**
     * The current CVS revision of this class
     */
    public static final String REVISION = "$Revision: 1.13 $";
    
    /**
     * The friendly name for this component, used by
     * all related classes.
     */
    public static final String NAME = "FilterManager";
    
//---STATIC METHODS---

//---CONSTRUCTORS---

//---PUBLIC METHODS---

    /**
     * This method starts the FilterManager
     */
     public void start() throws ComponentStartException {
                
        _logger.write(toString(), Logger.SYSINIT, "coming up");
        
        // configuration variable we require
        int listenPort = 0;

        Configuration config = _refman.getCM().getConfiguration("FilterManager");
        if (config == null) {
            System.err.println("CRITICAL:Unable to obtain configuration" +
                               "\n         Advise you check the i-scream log for more information.");
            _logger.write(toString(), Logger.FATAL, "ERROR - unable to obtain configuration");
            System.exit(1);
        } else {
            try {
                listenPort = Integer.parseInt(config.getProperty("FilterManager.listenPort"));
            } catch (org.omg.CORBA.MARSHAL e) {
                System.err.println ("CRITICAL:Unable to obtain required configuration property" +
                                    "\n         Advise you check the i-scream log for more information.");
                _logger.write(toString(), Logger.FATAL, "ERROR - required configuration property not present");
                System.exit(1);
            }
        }
        
        _logger.write(toString(), Logger.SYSMSG, "configured");
        
        HostListener hostListener = new HostListener(listenPort);
        hostListener.start();
        
        _logger.write(toString(), Logger.SYSINIT, "started");
    }

    /**
     * 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);
    }

//---PRIVATE METHODS---

//---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 = FilterManager.NAME;

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

    /**
     * A reference to the reference manager in use
     */
    private ReferenceManager _refman = ReferenceManager.getInstance();

//---STATIC ATTRIBUTES---

}            
Revision:	1.14
Committed:	Thu Jan 18 23:19:29 2001 UTC (23 years, 4 months ago) by tdb
Branch:	MAIN
Changes since 1.13:	+4 -3 lines
Log Message:	Changes to reflect move of Component, ComponentStartException, and the ReferenceManager from util to componentmanager.
#	User	Rev	Content
1	tdb	1.1	//---PACKAGE DECLARATION---
2	tdb	1.9	package uk.ac.ukc.iscream.filtermanager;
3	tdb	1.1
4			//---IMPORTS---
5	ajm	1.12	import uk.ac.ukc.iscream.util.*;
6	tdb	1.1	import uk.ac.ukc.iscream.core.*;
7	tdb	1.14	import uk.ac.ukc.iscream.componentmanager.*;
8	tdb	1.1
9			/**
10	ajm	1.12	* The FilterManager handles initialisation
11			* of hosts with the system, allowing hosts to
12			* gain their configuration and a hook to a Filter
13			* to talk to.
14	tdb	1.1	*
15	ajm	1.13	* @author $Author: ajm4 $
16	tdb	1.14	* @version $Id: FilterManager.java,v 1.13 2000/12/12 19:55:45 ajm4 Exp $
17	tdb	1.1	*/
18	tdb	1.14	public class FilterManager implements Component {
19	tdb	1.1
20			//---FINAL ATTRIBUTES---
21
22			/**
23			* The current CVS revision of this class
24			*/
25	tdb	1.14	public static final String REVISION = "$Revision: 1.13 $";
26	ajm	1.12
27			/**
28	ajm	1.13	* The friendly name for this component, used by
29	ajm	1.12	* all related classes.
30			*/
31			public static final String NAME = "FilterManager";
32	tdb	1.1
33			//---STATIC METHODS---
34
35	ajm	1.12	//---CONSTRUCTORS---
36
37			//---PUBLIC METHODS---
38
39			/**
40			* This method starts the FilterManager
41			*/
42			public void start() throws ComponentStartException {
43
44			_logger.write(toString(), Logger.SYSINIT, "coming up");
45	tdb	1.10
46			// configuration variable we require
47			int listenPort = 0;
48
49	ajm	1.12	Configuration config = _refman.getCM().getConfiguration("FilterManager");
50	tdb	1.10	if (config == null) {
51	ajm	1.12	System.err.println("CRITICAL:Unable to obtain configuration" +
52			"\n Advise you check the i-scream log for more information.");
53			_logger.write(toString(), Logger.FATAL, "ERROR - unable to obtain configuration");
54			System.exit(1);
55	tdb	1.10	} else {
56			try {
57			listenPort = Integer.parseInt(config.getProperty("FilterManager.listenPort"));
58			} catch (org.omg.CORBA.MARSHAL e) {
59	ajm	1.12	System.err.println ("CRITICAL:Unable to obtain required configuration property" +
60			"\n Advise you check the i-scream log for more information.");
61			_logger.write(toString(), Logger.FATAL, "ERROR - required configuration property not present");
62			System.exit(1);
63	tdb	1.1	}
64			}
65	tdb	1.10
66	ajm	1.12	_logger.write(toString(), Logger.SYSMSG, "configured");
67	tdb	1.10
68			HostListener hostListener = new HostListener(listenPort);
69			hostListener.start();
70
71	ajm	1.12	_logger.write(toString(), Logger.SYSINIT, "started");
72	tdb	1.1	}
73
74	ajm	1.12	/**
75			* Overrides the {@link java.lang.Object#toString() Object.toString()}
76			* method to provide clean logging (every class should have this).
77			*
78			* This uses the uk.ac.ukc.iscream.util.NameFormat class
79			* to format the toString()
80			*
81			* @return the name of this class and its CVS revision
82			*/
83			public String toString() {
84			return FormatName.getName(
85			_name,
86	ajm	1.13	getClass().getName(),
87	ajm	1.12	REVISION);
88			}
89	tdb	1.1
90			//---PRIVATE METHODS---
91
92			//---ACCESSOR/MUTATOR METHODS---
93
94			//---ATTRIBUTES---
95	ajm	1.12
96			/**
97			* This is the friendly identifier of the
98			* component this class is running in.
99			* eg, a Filter may be called "filter1",
100			* If this class does not have an owning
101			* component, a name from the configuration
102			* can be placed here. This name could also
103			* be changed to null for utility classes.
104			*/
105			private String _name = FilterManager.NAME;
106
107			/**
108			* This holds a reference to the
109			* system logger that is being used.
110			*/
111			private Logger _logger = ReferenceManager.getInstance().getLogger();
112
113			/**
114			* A reference to the reference manager in use
115			*/
116			private ReferenceManager _refman = ReferenceManager.getInstance();
117	tdb	1.1
118			//---STATIC ATTRIBUTES---
119
120			}