server/core/Core.java

//---PACKAGE DECLARATION---

//---IMPORTS---
import uk.ac.ukc.iscream.core.*;
import org.omg.CORBA.*;
import org.omg.CosNaming.*;
import org.omg.PortableServer.*;

/**
 * The main class for the CORE of the I-Scream system.
 * The main method of this class initialises the ORB
 * and then starts and registers CORE I-Scream services
 * with the name service.  At which point it essentially
 * finishs its role and the started services continue to
 * serve requests from the I-Scream system.
 *
 * @author  $Author: tdb1 $
 * @version $Id: Core.java,v 1.4 2000/11/13 16:36:03 tdb1 Exp $
 */
class Core {

//---FINAL ATTRIBUTES---

    /**
     * The current CVS revision of this class
     */
    public static final String REVISION = "$Revision: 1.4 $";
    
//---STATIC METHODS---

    /**
     * The main method which starts the CORE
     * Currently the args are passed direct to the ORB,
     * so any ORB paramaters could go there.
     *
     * @param args the command line arguments
     */
    public static void main(String[] args) {
        System.out.println("--- I-Scream ---");
        
        // can't have a real toString() :)
        String toString = "CORE(" + REVISION.substring(11, REVISION.length() - 2) + ")";
        
        System.out.println(toString + ": coming up");
        
        try {
            // start the ORB
            ORB orb = ORB.init(args, null);
            
            // get the Root POA
            org.omg.CORBA.Object objRef = orb.resolve_initial_references("RootPOA");
            POA poa = POAHelper.narrow(objRef);
            
            // get a hook to the name service
            objRef = orb.resolve_initial_references("NameService");
            NamingContextExt ncRef = NamingContextExtHelper.narrow(objRef);
            
            // start and bind each server in turn

            // create the logger (either Screen or File)
            ScreenLoggerServant loggerRef = new ScreenLoggerServant();
            //FileLoggerServant loggerRef = new FileLoggerServant("core.log");
            // and advertise it to the naming context
            objRef = poa.servant_to_reference(loggerRef);
            ncRef.bind(ncRef.to_name("iscream.Logger"), objRef);
            
            // get a ref to the logger servant as a Logger reference
            Logger logRef = LoggerHelper.narrow(objRef);
            
            // create the Configurator
            ConfiguratorServant configuratorRef = new ConfiguratorServant(poa, logRef);
            // and advertise it to the naming context
            objRef = poa.servant_to_reference(configuratorRef);
            ncRef.bind(ncRef.to_name("iscream.Configurator"), objRef);
            
            // start the POA off
            poa.the_POAManager().activate();
                        
            logRef.write(toString, "started");
            
            // now we are running, we just need to serve
            // so we ask the orb to block for us until it has finished
            orb.run();
            
        // if there was a problem then we'll get to here    
        } catch (Exception e) {
            
            // there is already another CORE of the same name registered
            if ( e instanceof org.omg.CosNaming.NamingContextPackage.AlreadyBound) {
                System.err.println("ERROR: Another I-Scream CORE is already registered under the same name.");
            
            // otherwise we don't know what happened
            // so print the error and do a stack trace
            } else {
                System.err.println("CORE ERROR: " + e);
                e.printStackTrace(System.out);
            }
        }
    }

//---CONSTRUCTORS---

//---PUBLIC METHODS---

//---PRIVATE METHODS---

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

//---ATTRIBUTES---

//---STATIC ATTRIBUTES---

}
Revision:	1.5
Committed:	Mon Nov 13 18:21:15 2000 UTC (23 years, 6 months ago) by tdb
Branch:	MAIN
Changes since 1.4:	+10 -6 lines
Log Message:	Modified the toString of all the classes to bring in line with the standard Modified CORE to startup nicer (output wise)
#	User	Rev	Content
1	ajm	1.1	//---PACKAGE DECLARATION---
2
3			//---IMPORTS---
4	tdb	1.4	import uk.ac.ukc.iscream.core.*;
5	ajm	1.1	import org.omg.CORBA.*;
6			import org.omg.CosNaming.*;
7			import org.omg.PortableServer.*;
8
9			/**
10			* The main class for the CORE of the I-Scream system.
11			* The main method of this class initialises the ORB
12			* and then starts and registers CORE I-Scream services
13			* with the name service. At which point it essentially
14			* finishs its role and the started services continue to
15			* serve requests from the I-Scream system.
16			*
17	tdb	1.3	* @author $Author: tdb1 $
18	tdb	1.5	* @version $Id: Core.java,v 1.4 2000/11/13 16:36:03 tdb1 Exp $
19	ajm	1.1	*/
20			class Core {
21
22			//---FINAL ATTRIBUTES---
23
24			/**
25			* The current CVS revision of this class
26			*/
27	tdb	1.5	public static final String REVISION = "$Revision: 1.4 $";
28	ajm	1.1
29			//---STATIC METHODS---
30
31			/**
32			* The main method which starts the CORE
33			* Currently the args are passed direct to the ORB,
34			* so any ORB paramaters could go there.
35			*
36			* @param args the command line arguments
37			*/
38			public static void main(String[] args) {
39	tdb	1.5	System.out.println("--- I-Scream ---");
40
41			// can't have a real toString() :)
42			String toString = "CORE(" + REVISION.substring(11, REVISION.length() - 2) + ")";
43
44			System.out.println(toString + ": coming up");
45
46	ajm	1.1	try {
47			// start the ORB
48			ORB orb = ORB.init(args, null);
49
50			// get the Root POA
51			org.omg.CORBA.Object objRef = orb.resolve_initial_references("RootPOA");
52			POA poa = POAHelper.narrow(objRef);
53
54			// get a hook to the name service
55			objRef = orb.resolve_initial_references("NameService");
56			NamingContextExt ncRef = NamingContextExtHelper.narrow(objRef);
57
58	tdb	1.3	// start and bind each server in turn
59
60			// create the logger (either Screen or File)
61			ScreenLoggerServant loggerRef = new ScreenLoggerServant();
62			//FileLoggerServant loggerRef = new FileLoggerServant("core.log");
63			// and advertise it to the naming context
64			objRef = poa.servant_to_reference(loggerRef);
65			ncRef.bind(ncRef.to_name("iscream.Logger"), objRef);
66	ajm	1.1
67	tdb	1.3	// get a ref to the logger servant as a Logger reference
68			Logger logRef = LoggerHelper.narrow(objRef);
69	ajm	1.1
70	tdb	1.3	// create the Configurator
71			ConfiguratorServant configuratorRef = new ConfiguratorServant(poa, logRef);
72			// and advertise it to the naming context
73	ajm	1.1	objRef = poa.servant_to_reference(configuratorRef);
74			ncRef.bind(ncRef.to_name("iscream.Configurator"), objRef);
75
76			// start the POA off
77	tdb	1.2	poa.the_POAManager().activate();
78	tdb	1.5
79	tdb	1.3	logRef.write(toString, "started");
80	ajm	1.1
81			// now we are running, we just need to serve
82			// so we ask the orb to block for us until it has finished
83			orb.run();
84
85			// if there was a problem then we'll get to here
86			} catch (Exception e) {
87
88			// there is already another CORE of the same name registered
89			if ( e instanceof org.omg.CosNaming.NamingContextPackage.AlreadyBound) {
90			System.err.println("ERROR: Another I-Scream CORE is already registered under the same name.");
91
92			// otherwise we don't know what happened
93			// so print the error and do a stack trace
94			} else {
95			System.err.println("CORE ERROR: " + e);
96			e.printStackTrace(System.out);
97			}
98			}
99			}
100
101			//---CONSTRUCTORS---
102
103			//---PUBLIC METHODS---
104
105			//---PRIVATE METHODS---
106
107			//---ACCESSOR/MUTATOR METHODS---
108
109			//---ATTRIBUTES---
110
111			//---STATIC ATTRIBUTES---
112
113	tdb	1.2	}