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//---PACKAGE DECLARATION--- |
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|
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//---IMPORTS--- |
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import uk.ac.ukc.iscream.core.*; |
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import uk.ac.ukc.iscream.filter.*; |
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import org.omg.CORBA.*; |
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import org.omg.CosNaming.*; |
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import org.omg.PortableServer.*; |
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|
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/** |
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* A RootFilter Startup Class |
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* |
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* @author $Author$ |
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* @version $Id$ |
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*/ |
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class RootFilter { |
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|
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//---FINAL ATTRIBUTES--- |
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|
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/** |
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* The current CVS revision of this class |
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*/ |
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public static final String REVISION = "$Revision: 1.1 $"; |
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|
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//---STATIC METHODS--- |
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public static void main(String[] args) { |
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System.setProperty("org.omg.CORBA.ORBClass","jacorb.orb.ORB"); |
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System.setProperty("org.omg.CORBA.ORBSingletonClass","jacorb.orb.ORBSingleton"); |
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|
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// get our name from the command line |
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String ourName = ""; |
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if (args.length == 1) { |
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ourName = args[0]; |
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} |
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else { |
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usage(); |
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} |
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|
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// can't have a real toString() :) |
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String toString = "RootFilter{" + ourName + "}(" + REVISION.substring(11, REVISION.length() - 2) + ")"; |
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|
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try { |
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ORB orb = ORB.init(args, null); |
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|
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// something to hold objects |
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org.omg.CORBA.Object objRef = null; |
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|
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// get the Root POA |
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objRef = orb.resolve_initial_references("RootPOA"); |
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POA poa = POAHelper.narrow(objRef); |
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|
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// get a hook to the name service |
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objRef = orb.resolve_initial_references("NameService"); |
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NamingContextExt ncRef = NamingContextExtHelper.narrow(objRef); |
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|
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// get a ref to the ConfigurationManager, Logger & the FilterManager |
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objRef = ncRef.resolve(ncRef.to_name("iscream.ConfigurationManager")); |
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ConfigurationManager configManager = ConfigurationManagerHelper.narrow(objRef); |
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|
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objRef = ncRef.resolve(ncRef.to_name("iscream.Logger")); |
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Logger logger = LoggerHelper.narrow(objRef); |
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//objRef = ncRef.resolve(ncRef.to_name("iscream.FilterManager")); |
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//FilterManager filterManager = FilterManagerHelper.narrow(objRef); |
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logger.write(toString, Logger.SYSINIT, "coming up"); |
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// **** THIS SECTION WILL NEED CHANGING TO GET RELEVANT CONFIG |
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// **** Please ignore this block of code, it's just "copy/paste" :) |
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|
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// get the config |
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Configuration myConfig = configManager.getConfiguration(ourName); |
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logger.write(toString, Logger.SYSINIT, "configured"); |
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|
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// **** END COMMENT |
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// **** INITIAL FILTER MANAGER COMMUNICATIONS HERE |
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// **** END COMMENT |
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logger.write(toString, Logger.SYSINIT, "starting RootFilter"); |
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|
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/************************************************************** |
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Here would be an ideal place to start another thread to do |
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the listening part of the Filter. Ideally it should just be |
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created and then run(). It may be necessary to pass some of |
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the following parameters into the thread by the constructor. |
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|
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Logger logger |
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- a reference to a Logger object |
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FilterManager filterManager |
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- a reference to the system filter manager |
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ConfigurationManager configManager |
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- a reference to the system configuration manager |
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Configuration myConfig |
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- a reference to the configuration object for this |
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filter instance |
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String ourName |
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- our "identifier" name |
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|
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**************************************************************/ |
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|
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// NOTE: |
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// We will not need to bind to the ORB when the FilterManager |
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// is running :) |
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// create the RootFilterServant |
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RootFilterServant rfServant = new RootFilterServant(logger, ourName); |
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// and advertise it to the naming context |
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objRef = poa.servant_to_reference(rfServant); |
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ncRef.bind(ncRef.to_name("iscream.Filter."+ourName), objRef); |
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// start the POA off |
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poa.the_POAManager().activate(); |
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logger.write(toString, Logger.SYSINIT, "started"); |
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// now we are running, we just need to serve |
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// so we ask the orb to block for us until it has finished |
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orb.run(); |
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|
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} catch (Exception e) { |
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System.err.println("FILTER ERROR: " + e); |
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e.printStackTrace(System.out); |
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} |
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} |
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|
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/** |
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* A simple method to print the usage of this class. |
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* It never returns, but instead exits to the system |
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* with a value 1, to indicate the system did not start |
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* properly. |
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*/ |
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public static void usage() { |
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System.out.println("USAGE: java RootFilter <name>"); |
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System.out.println("WHERE <name>:"); |
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System.out.println(" The unique identifier for the RootFilter in the system."); |
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System.exit(1); |
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} |
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|
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//---CONSTRUCTORS--- |
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|
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//---PUBLIC METHODS--- |
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|
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//---PRIVATE METHODS--- |
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|
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//---ACCESSOR/MUTATOR METHODS--- |
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|
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//---ATTRIBUTES--- |
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|
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//---STATIC ATTRIBUTES--- |
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|
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} |
