server/SampleConfigObtainer/SampleConfigObtainer.java

//---PACKAGE DECLARATION---

//---IMPORTS---
import core.*;
import org.omg.CORBA.*;
import org.omg.CosNaming.*;

/**
 * A quick class to test the Configurator and Configuration implementations
 *
 * @author  $Author: ajm4 $
 * @version $Id: SampleConfigObtainer.java,v 1.1 2000/11/08 21:24:33 ajm4 Exp $
 */
class SampleConfigObtainer {

//---FINAL ATTRIBUTES---

    /**
     * The current CVS revision of this class
     */
    public static final String REVISION = "$Revision: 1.1 $";
    
//---STATIC METHODS---

    public static void main(String[] args) {
        try {        
            ORB orb = ORB.init(args, null);
            
            // something to hold objects
            org.omg.CORBA.Object objRef = null;    
            
            // get the Root POA
            //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);
                
            // get a ref to the Configurator
            objRef = ncRef.resolve(ncRef.to_name("iscream.Configurator"));
            Configurator configurator = ConfiguratorHelper.narrow(objRef);
                
            // start the POA off
            //poa.the_POAManager().activate();
            
            // the name of the test config
            String config = "myconfig";
            
            // a test property to get
            String testProperty = "test";
            
            System.out.println("Started:" + REVISION);
            System.out.println("Trying to get Configuration " + config);
            
            // get the config
            Configuration myConfig = configurator.getConfiguration(config);
            
            // did we?
            if (myConfig == null) {
                System.out.println("Failed: is it there?, can you read it?");
            } else {
                
                System.out.println("Success.");
                System.out.println("Trying to get property " + testProperty);
                
                // get the property
                try {
                    System.out.println("Response:" + myConfig.getProperty(testProperty));
                } catch (org.omg.CORBA.MARSHAL e) {
                    System.out.println("Caught org.omg.CORBA.MARSHAL, must be a null we got back");
                }
            }
            
            System.out.println("Testing configuration change system.");
            System.out.println("Waiting for configuration change on 1 second intervals");
            
            // get our last modified
            long myLastModified = myConfig.getLastModified();
            
            // get a ref to the last modified of file NOW...
            boolean changed = configurator.isModified(config,myLastModified);
            
            // keep checking, every second until it changes 
            while (!changed) {
                Thread.sleep(1000);
                changed = configurator.isModified(config,myLastModified);
            }
            
            // get the config again and print out the new time to compare - just to check ;-)
            myConfig = configurator.getConfiguration(config);
            System.out.println("Configuration changed: " + myLastModified + " -> " + myConfig.getLastModified());
            
            // done testing
            System.out.println("Finished");

        } catch (Exception e) {
            System.err.println("TESTER ERROR: " + e);
            e.printStackTrace(System.out);
        }
    }

//---CONSTRUCTORS---

//---PUBLIC METHODS---

//---PRIVATE METHODS---

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

//---ATTRIBUTES---

//---STATIC ATTRIBUTES---

}            
Revision:	1.2
Committed:	Mon Nov 13 16:11:03 2000 UTC (24 years, 1 month ago) by tdb
Branch:	MAIN
Changes since 1.1:	+22 -2 lines
Log Message:	Committed by ajm4 - NOT tdb1 Made changes to allow components to check if their configuration has changed while they are running. Also modifed the sample program to test this new functionality.
#	User	Rev	Content
1	ajm	1.1	//---PACKAGE DECLARATION---
2
3			//---IMPORTS---
4			import core.*;
5			import org.omg.CORBA.*;
6			import org.omg.CosNaming.*;
7
8			/**
9			* A quick class to test the Configurator and Configuration implementations
10			*
11			* @author $Author: ajm4 $
12	tdb	1.2	* @version $Id: SampleConfigObtainer.java,v 1.1 2000/11/08 21:24:33 ajm4 Exp $
13	ajm	1.1	*/
14			class SampleConfigObtainer {
15
16			//---FINAL ATTRIBUTES---
17
18			/**
19			* The current CVS revision of this class
20			*/
21	tdb	1.2	public static final String REVISION = "$Revision: 1.1 $";
22	ajm	1.1
23			//---STATIC METHODS---
24
25			public static void main(String[] args) {
26			try {
27			ORB orb = ORB.init(args, null);
28
29			// something to hold objects
30			org.omg.CORBA.Object objRef = null;
31
32			// get the Root POA
33			//objRef = orb.resolve_initial_references("RootPOA");
34			//POA poa = POAHelper.narrow(objRef);
35
36			// get a hook to the name service
37			objRef = orb.resolve_initial_references("NameService");
38			NamingContextExt ncRef = NamingContextExtHelper.narrow(objRef);
39
40			// get a ref to the Configurator
41			objRef = ncRef.resolve(ncRef.to_name("iscream.Configurator"));
42			Configurator configurator = ConfiguratorHelper.narrow(objRef);
43
44			// start the POA off
45			//poa.the_POAManager().activate();
46
47			// the name of the test config
48			String config = "myconfig";
49
50			// a test property to get
51			String testProperty = "test";
52
53			System.out.println("Started:" + REVISION);
54			System.out.println("Trying to get Configuration " + config);
55
56			// get the config
57			Configuration myConfig = configurator.getConfiguration(config);
58
59			// did we?
60			if (myConfig == null) {
61			System.out.println("Failed: is it there?, can you read it?");
62			} else {
63
64			System.out.println("Success.");
65			System.out.println("Trying to get property " + testProperty);
66
67			// get the property
68			try {
69			System.out.println("Response:" + myConfig.getProperty(testProperty));
70			} catch (org.omg.CORBA.MARSHAL e) {
71			System.out.println("Caught org.omg.CORBA.MARSHAL, must be a null we got back");
72			}
73			}
74
75	tdb	1.2	System.out.println("Testing configuration change system.");
76			System.out.println("Waiting for configuration change on 1 second intervals");
77
78			// get our last modified
79			long myLastModified = myConfig.getLastModified();
80
81			// get a ref to the last modified of file NOW...
82			boolean changed = configurator.isModified(config,myLastModified);
83
84			// keep checking, every second until it changes
85			while (!changed) {
86			Thread.sleep(1000);
87			changed = configurator.isModified(config,myLastModified);
88			}
89
90			// get the config again and print out the new time to compare - just to check ;-)
91			myConfig = configurator.getConfiguration(config);
92			System.out.println("Configuration changed: " + myLastModified + " -> " + myConfig.getLastModified());
93
94			// done testing
95	ajm	1.1	System.out.println("Finished");
96
97			} catch (Exception e) {
98			System.err.println("TESTER ERROR: " + e);
99			e.printStackTrace(System.out);
100			}
101			}
102
103			//---CONSTRUCTORS---
104
105			//---PUBLIC METHODS---
106
107			//---PRIVATE METHODS---
108
109			//---ACCESSOR/MUTATOR METHODS---
110
111			//---ATTRIBUTES---
112
113			//---STATIC ATTRIBUTES---
114
115			}