server/client/ClientMain.java

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

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

/**
 * A startup component for the Local Clients.
 *
 * @author  $Author: tdb1 $
 * @version $Id: ClientMain.java,v 1.5 2001/02/21 22:48:20 tdb1 Exp $
 */
public class ClientMain implements Component {

//---FINAL ATTRIBUTES---

    /**
     * The current CVS revision of this class
     */
    public static final String REVISION = "$Revision: 1.5 $";
    
    /**
     * The friendly name for this component, used by
     * all related classes.
     */
    public static final String NAME = "LocalClient";
    
//---STATIC METHODS---

//---CONSTRUCTORS---

//---PUBLIC METHODS---

    /**
     * This starts the Local Client component
     */
    public void start() throws ComponentStartException {
        // get references to key objects
        _refman = ReferenceManager.getInstance();
        _logger = ReferenceManager.getInstance().getLogger();

        _logger.write(toString(), Logger.SYSINIT, "coming up");
            
        // configuration variables we require
        int queueMonitorInterval = 0;
        
        Configuration config = _refman.getCM().getConfiguration("LocalClient");
        if (config == null) {
            throw new ComponentStartException("Unable to obtain configuration for component");
        }
        else {
            try {
                // get the configuration properties we need
                queueMonitorInterval = Integer.parseInt(config.getProperty("Queue.MonitorInterval"));
            } catch (org.omg.CORBA.MARSHAL e) {
                throw new ComponentStartException("Unable to obtain requried configuration property for component");
            }
        }
               
        _logger.write(toString(), Logger.SYSINIT, "configured");
        
        // setup the servant
        _logger.write(toString(), Logger.SYSINIT, "starting servant");           
        
        Client client;
        
        try {
            ClientServant ref = new ClientServant();
            org.omg.CORBA.Object objRef = _refman.getRootPOA().servant_to_reference(ref);
            client = ClientHelper.narrow(objRef);
            
            // this name maybe shouldn't be static
            objRef = _refman.getCORBARef("iscream.ClientInterface.CorbaListener");
            CorbaClientListener listener = CorbaClientListenerHelper.narrow(objRef);
            
            _logger.write(toString(), Logger.SYSINIT, "connecting");
            CorbaControlHandler handler = listener.connect(client);
            handler.startData();
        }
        catch(Exception e) {
            // not sure what to do here
            // so we just log the error
            _logger.write(toString(), Logger.ERROR, "ERROR - " + e.getMessage());
        }
        
        _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.FormatName 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 holds a reference to the
     * system logger that is being used.
     */
    private Logger _logger;

    /**
     * A reference to the reference manager in use
     */
    private ReferenceManager _refman;

//---STATIC ATTRIBUTES---

}
Revision:	1.6
Committed:	Sun Feb 25 22:22:16 2001 UTC (23 years, 2 months ago) by tdb
Branch:	MAIN
Changes since 1.5:	+8 -5 lines
Log Message:	Change required by the alterations in Component startup.
#	User	Rev	Content
1	tdb	1.5	//---PACKAGE DECLARATION---
2	tdb	1.1	package uk.ac.ukc.iscream.client;
3
4	tdb	1.5	//---IMPORTS---
5	tdb	1.1	import uk.ac.ukc.iscream.clientinterface.*;
6			import uk.ac.ukc.iscream.componentmanager.*;
7	tdb	1.5	import uk.ac.ukc.iscream.core.*;
8			import uk.ac.ukc.iscream.util.*;
9
10			/**
11			* A startup component for the Local Clients.
12			*
13	tdb	1.6	* @author $Author: tdb1 $
14			* @version $Id: ClientMain.java,v 1.5 2001/02/21 22:48:20 tdb1 Exp $
15	tdb	1.5	*/
16			public class ClientMain implements Component {
17
18			//---FINAL ATTRIBUTES---
19
20			/**
21			* The current CVS revision of this class
22			*/
23	tdb	1.6	public static final String REVISION = "$Revision: 1.5 $";
24	tdb	1.5
25			/**
26			* The friendly name for this component, used by
27			* all related classes.
28			*/
29			public static final String NAME = "LocalClient";
30
31			//---STATIC METHODS---
32
33			//---CONSTRUCTORS---
34
35			//---PUBLIC METHODS---
36
37			/**
38			* This starts the Local Client component
39			*/
40			public void start() throws ComponentStartException {
41	tdb	1.6	// get references to key objects
42			_refman = ReferenceManager.getInstance();
43			_logger = ReferenceManager.getInstance().getLogger();
44	tdb	1.5
45			_logger.write(toString(), Logger.SYSINIT, "coming up");
46
47			// configuration variables we require
48			int queueMonitorInterval = 0;
49
50			Configuration config = _refman.getCM().getConfiguration("LocalClient");
51			if (config == null) {
52			throw new ComponentStartException("Unable to obtain configuration for component");
53			}
54			else {
55			try {
56			// get the configuration properties we need
57			queueMonitorInterval = Integer.parseInt(config.getProperty("Queue.MonitorInterval"));
58			} catch (org.omg.CORBA.MARSHAL e) {
59			throw new ComponentStartException("Unable to obtain requried configuration property for component");
60			}
61			}
62
63			_logger.write(toString(), Logger.SYSINIT, "configured");
64
65			// setup the servant
66			_logger.write(toString(), Logger.SYSINIT, "starting servant");
67
68			Client client;
69
70	tdb	1.1	try {
71	tdb	1.5	ClientServant ref = new ClientServant();
72			org.omg.CORBA.Object objRef = _refman.getRootPOA().servant_to_reference(ref);
73			client = ClientHelper.narrow(objRef);
74
75			// this name maybe shouldn't be static
76			objRef = _refman.getCORBARef("iscream.ClientInterface.CorbaListener");
77			CorbaClientListener listener = CorbaClientListenerHelper.narrow(objRef);
78
79			_logger.write(toString(), Logger.SYSINIT, "connecting");
80			CorbaControlHandler handler = listener.connect(client);
81			handler.startData();
82	tdb	1.1	}
83	tdb	1.5	catch(Exception e) {
84			// not sure what to do here
85			// so we just log the error
86			_logger.write(toString(), Logger.ERROR, "ERROR - " + e.getMessage());
87	tdb	1.1	}
88	tdb	1.5
89			_logger.write(toString(), Logger.SYSINIT, "started");
90
91			}
92
93			/**
94			* Overrides the {@link java.lang.Object#toString() Object.toString()}
95			* method to provide clean logging (every class should have this).
96			*
97			* This uses the uk.ac.ukc.iscream.util.FormatName class
98			* to format the toString()
99			*
100			* @return the name of this class and its CVS revision
101			*/
102			public String toString() {
103			return FormatName.getName(
104			NAME,
105			getClass().getName(),
106			REVISION);
107	tdb	1.1	}
108	tdb	1.5
109			//---PRIVATE METHODS---
110
111			//---ACCESSOR/MUTATOR METHODS---
112
113			//---ATTRIBUTES---
114
115			/**
116			* This holds a reference to the
117			* system logger that is being used.
118			*/
119	tdb	1.6	private Logger _logger;
120	tdb	1.5
121			/**
122			* A reference to the reference manager in use
123			*/
124	tdb	1.6	private ReferenceManager _refman;
125	tdb	1.5
126			//---STATIC ATTRIBUTES---
127	tdb	1.1
128			}