server/filter/FilterMain.java

//---PACKAGE DECLARATION---

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

/**
 * A Filter Startup Class
 *
 * @author  $Author: tdb1 $
 * @version $Id: FilterMain.java,v 1.8 2000/11/27 00:41:01 tdb1 Exp $
 */
class FilterMain {

//---FINAL ATTRIBUTES---

    /**
     * The current CVS revision of this class
     */
    public static final String REVISION = "$Revision: 1.8 $";
    
//---STATIC METHODS---

    public static void main(String[] args) {
        System.setProperty("org.omg.CORBA.ORBClass","jacorb.orb.ORB");
        System.setProperty("org.omg.CORBA.ORBSingletonClass","jacorb.orb.ORBSingleton");
        
        // get our name from the command line
        String ourName = "";
        if (args.length == 1) {
            ourName = args[0];
        }
        else {
            usage();
        }
        
        // can't have a real toString() :)
        String toString = "Filter{" + ourName + "}(" + REVISION.substring(11, REVISION.length() - 2) + ")";
        
        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 ConfigurationManager, Logger & the FilterManager
            
            objRef = ncRef.resolve(ncRef.to_name("iscream.ConfigurationManager"));
            ConfigurationManager configManager = ConfigurationManagerHelper.narrow(objRef);
            
            objRef = ncRef.resolve(ncRef.to_name("iscream.Logger"));
            Logger logger = LoggerHelper.narrow(objRef);
            
            logger.write(toString, Logger.SYSINIT, "coming up");
            
            
            // **** THIS SECTION WILL NEED CHANGING TO GET RELEVANT CONFIG
            // **** Please ignore this block of code, it's just "copy/paste" :)
            
            // get the config
            Configuration myConfig = configManager.getConfiguration(ourName);
            
            // read some config here
            int UDPport = 0;
            int TCPport = 0;
            String parentFilterName = null;
  
            // did we?
            if (myConfig == null) {
                System.out.println("Failed: is it there?, can you read it?");
                System.exit(1);
            } else {
              
                // get the property
                try {
                    //QUERY HERE.... ???
                    UDPport = new Integer(myConfig.getProperty("Filter.UDPlistenPort")).intValue();
                    TCPport = new Integer(myConfig.getProperty("Filter.TCPlistenPort")).intValue();
                    parentFilterName = myConfig.getProperty("Filter.parentFilter");
                } catch (org.omg.CORBA.MARSHAL e) {
                    System.out.println("Caught org.omg.CORBA.MARSHAL, must be a null we got back");
                    //System.exit(1);
                }
            }
            
            logger.write(toString, Logger.SYSINIT, "configured");
            
            // **** END COMMENT
            
            // **** INITIAL FILTER MANAGER COMMUNICATIONS HERE
            
            // get a root (CHANGE to use FilterManager)
            objRef = ncRef.resolve(ncRef.to_name("iscream.Filter." + parentFilterName));
            Filter parentFilter = FilterHelper.narrow(objRef);

            // SETUP our Servant
            
            // create the FilterServant
            FilterServant filterServant = new FilterServant(logger, parentFilter, ourName, new Integer(TCPport).toString() , new Integer(UDPport).toString());

            // register ourselves

            // and advertise it to the naming context
            objRef = poa.servant_to_reference(filterServant);
            ncRef.bind(ncRef.to_name("iscream.Filter."+ourName), objRef);

            // **** END COMMENT
            
            // END SETUP
            

            /**************************************************************
              Here would be an ideal place to start another thread to do
              the listening part of the Filter. Ideally it should just be
              created and then run(). It may be necessary to pass some of
              the following parameters into the thread by the constructor.
              
                  Logger logger
                      - a reference to a Logger object
                  FilterManager filterManager
                      - a reference to the system filter manager
                  ConfigurationManager configManager
                      - a reference to the system configuration manager
                  Configuration myConfig
                      - a reference to the configuration object for this
                        filter instance
                  String ourName
                      - our "identifier" name
            
            **************************************************************/
                                    
            logger.write(toString, Logger.SYSINIT, "starting Filter UDP listener");
            UDPReader udpReader = new UDPReader(UDPport, parentFilter, logger);
            udpReader.start();
            logger.write(toString, Logger.SYSINIT, "Filter UDP listener started");

            logger.write(toString, Logger.SYSINIT, "starting Filter TCP listener");
            TCPReader tcpReader = new TCPReader(logger, configManager, TCPport, parentFilter);
            tcpReader.start();
            logger.write(toString, Logger.SYSINIT, "Filter TCP listener started");

            // TEST
            parentFilter.receiveXML("<?xml version=\"1.0\" encoding=\"ISO8859-1\"?><packet><test>This is just a debugging test, we ("+ourName+") are live on UDPport: "+UDPport+"</test></packet>");
            
            // start the POA off
            poa.the_POAManager().activate();
                        
            logger.write(toString, Logger.SYSINIT, "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();
            
        } catch (Exception e) {
            System.err.println("FILTER ERROR: " + e);
            e.printStackTrace(System.out);
        }
    }

    /** 
     * A simple method to print the usage of this class.
     * It never returns, but instead exits to the system
     * with a value 1, to indicate the system did not start
     * properly.
     */
    public static void usage() {
        System.out.println("USAGE: java FilterMain <name>");
        System.out.println("WHERE <name>:");
        System.out.println("      The unique identifier for the Filter in the system.");
        System.exit(1);
    }

//---CONSTRUCTORS---

//---PUBLIC METHODS---

//---PRIVATE METHODS---

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

//---ATTRIBUTES---

//---STATIC ATTRIBUTES---

}            
Revision:	1.9
Committed:	Mon Nov 27 10:23:19 2000 UTC (23 years, 5 months ago) by tdb
Branch:	MAIN
Changes since 1.8:	+4 -4 lines
Log Message:	Missed a few references to port.
#	User	Rev	Content
1	tdb	1.1	//---PACKAGE DECLARATION---
2
3			//---IMPORTS---
4			import uk.ac.ukc.iscream.core.*;
5			import uk.ac.ukc.iscream.filter.*;
6			import org.omg.CORBA.*;
7			import org.omg.CosNaming.*;
8			import org.omg.PortableServer.*;
9
10			/**
11			* A Filter Startup Class
12			*
13	tdb	1.9	* @author $Author: tdb1 $
14			* @version $Id: FilterMain.java,v 1.8 2000/11/27 00:41:01 tdb1 Exp $
15	tdb	1.1	*/
16			class FilterMain {
17
18			//---FINAL ATTRIBUTES---
19
20			/**
21			* The current CVS revision of this class
22			*/
23	tdb	1.9	public static final String REVISION = "$Revision: 1.8 $";
24	tdb	1.1
25			//---STATIC METHODS---
26
27			public static void main(String[] args) {
28			System.setProperty("org.omg.CORBA.ORBClass","jacorb.orb.ORB");
29			System.setProperty("org.omg.CORBA.ORBSingletonClass","jacorb.orb.ORBSingleton");
30
31			// get our name from the command line
32			String ourName = "";
33			if (args.length == 1) {
34			ourName = args[0];
35			}
36			else {
37			usage();
38			}
39
40			// can't have a real toString() :)
41			String toString = "Filter{" + ourName + "}(" + REVISION.substring(11, REVISION.length() - 2) + ")";
42
43			try {
44			ORB orb = ORB.init(args, null);
45
46			// something to hold objects
47			org.omg.CORBA.Object objRef = null;
48
49			// get the Root POA
50			objRef = orb.resolve_initial_references("RootPOA");
51			POA poa = POAHelper.narrow(objRef);
52
53			// get a hook to the name service
54			objRef = orb.resolve_initial_references("NameService");
55			NamingContextExt ncRef = NamingContextExtHelper.narrow(objRef);
56
57			// get a ref to the ConfigurationManager, Logger & the FilterManager
58
59			objRef = ncRef.resolve(ncRef.to_name("iscream.ConfigurationManager"));
60			ConfigurationManager configManager = ConfigurationManagerHelper.narrow(objRef);
61
62			objRef = ncRef.resolve(ncRef.to_name("iscream.Logger"));
63			Logger logger = LoggerHelper.narrow(objRef);
64
65			logger.write(toString, Logger.SYSINIT, "coming up");
66
67
68			// **** THIS SECTION WILL NEED CHANGING TO GET RELEVANT CONFIG
69			// **** Please ignore this block of code, it's just "copy/paste" :)
70
71			// get the config
72			Configuration myConfig = configManager.getConfiguration(ourName);
73
74			// read some config here
75	tdb	1.8	int UDPport = 0;
76			int TCPport = 0;
77	tdb	1.6	String parentFilterName = null;
78	tdb	1.2
79			// did we?
80			if (myConfig == null) {
81			System.out.println("Failed: is it there?, can you read it?");
82			System.exit(1);
83			} else {
84
85			// get the property
86			try {
87			//QUERY HERE.... ???
88	tdb	1.8	UDPport = new Integer(myConfig.getProperty("Filter.UDPlistenPort")).intValue();
89			TCPport = new Integer(myConfig.getProperty("Filter.TCPlistenPort")).intValue();
90	tdb	1.6	parentFilterName = myConfig.getProperty("Filter.parentFilter");
91	tdb	1.2	} catch (org.omg.CORBA.MARSHAL e) {
92			System.out.println("Caught org.omg.CORBA.MARSHAL, must be a null we got back");
93	tdb	1.3	//System.exit(1);
94	tdb	1.2	}
95			}
96	tdb	1.1
97			logger.write(toString, Logger.SYSINIT, "configured");
98
99			// **** END COMMENT
100
101	tdb	1.5	// **** INITIAL FILTER MANAGER COMMUNICATIONS HERE
102
103			// get a root (CHANGE to use FilterManager)
104	tdb	1.6	objRef = ncRef.resolve(ncRef.to_name("iscream.Filter." + parentFilterName));
105			Filter parentFilter = FilterHelper.narrow(objRef);
106	tdb	1.5
107	tdb	1.1	// SETUP our Servant
108
109			// create the FilterServant
110	tdb	1.8	FilterServant filterServant = new FilterServant(logger, parentFilter, ourName, new Integer(TCPport).toString() , new Integer(UDPport).toString());
111	tdb	1.6
112			// register ourselves
113
114	tdb	1.1	// and advertise it to the naming context
115			objRef = poa.servant_to_reference(filterServant);
116			ncRef.bind(ncRef.to_name("iscream.Filter."+ourName), objRef);
117	tdb	1.6
118			// **** END COMMENT
119	tdb	1.1
120			// END SETUP
121
122	tdb	1.5
123	tdb	1.1	/**************************************************************
124			Here would be an ideal place to start another thread to do
125			the listening part of the Filter. Ideally it should just be
126			created and then run(). It may be necessary to pass some of
127			the following parameters into the thread by the constructor.
128
129			Logger logger
130			- a reference to a Logger object
131			FilterManager filterManager
132			- a reference to the system filter manager
133			ConfigurationManager configManager
134			- a reference to the system configuration manager
135			Configuration myConfig
136			- a reference to the configuration object for this
137			filter instance
138			String ourName
139			- our "identifier" name
140
141			**************************************************************/
142	tdb	1.5
143	tdb	1.2	logger.write(toString, Logger.SYSINIT, "starting Filter UDP listener");
144	tdb	1.8	UDPReader udpReader = new UDPReader(UDPport, parentFilter, logger);
145	pjm2	1.4	udpReader.start();
146	tdb	1.2	logger.write(toString, Logger.SYSINIT, "Filter UDP listener started");
147	tdb	1.8
148			logger.write(toString, Logger.SYSINIT, "starting Filter TCP listener");
149			TCPReader tcpReader = new TCPReader(logger, configManager, TCPport, parentFilter);
150			tcpReader.start();
151			logger.write(toString, Logger.SYSINIT, "Filter TCP listener started");
152	tdb	1.5
153	tdb	1.1	// TEST
154	tdb	1.9	parentFilter.receiveXML("<?xml version=\"1.0\" encoding=\"ISO8859-1\"?><packet><test>This is just a debugging test, we ("+ourName+") are live on UDPport: "+UDPport+"</test></packet>");
155	tdb	1.1
156			// start the POA off
157			poa.the_POAManager().activate();
158
159			logger.write(toString, Logger.SYSINIT, "started");
160
161			// now we are running, we just need to serve
162			// so we ask the orb to block for us until it has finished
163			orb.run();
164
165			} catch (Exception e) {
166			System.err.println("FILTER ERROR: " + e);
167			e.printStackTrace(System.out);
168			}
169			}
170
171			/**
172			* A simple method to print the usage of this class.
173			* It never returns, but instead exits to the system
174			* with a value 1, to indicate the system did not start
175			* properly.
176			*/
177			public static void usage() {
178	pjm2	1.7	System.out.println("USAGE: java FilterMain <name>");
179	tdb	1.1	System.out.println("WHERE <name>:");
180			System.out.println(" The unique identifier for the Filter in the system.");
181			System.exit(1);
182			}
183
184			//---CONSTRUCTORS---
185
186			//---PUBLIC METHODS---
187
188			//---PRIVATE METHODS---
189
190			//---ACCESSOR/MUTATOR METHODS---
191
192			//---ATTRIBUTES---
193
194			//---STATIC ATTRIBUTES---
195
196	pjm2	1.4	}