package activation;

import rmi.RemoteFileClassifier;

import net.jini.discovery.LookupDiscovery;
import net.jini.discovery.DiscoveryListener;
import net.jini.discovery.DiscoveryEvent;
import net.jini.core.lookup.ServiceRegistrar;
import net.jini.core.lookup.ServiceItem;
import net.jini.core.lookup.ServiceRegistration;
import net.jini.core.lease.Lease;
import java.rmi.RMISecurityManager;
import java.rmi.MarshalledObject;
import java.rmi.activation.ActivationDesc;
import java.rmi.activation.ActivationGroupDesc;
import java.rmi.activation.ActivationGroupDesc.CommandEnvironment;
import java.rmi.activation.Activatable;
import java.rmi.activation.ActivationGroup;
import java.rmi.activation.ActivationGroupID;

import java.util.Properties;

import java.rmi.activation.UnknownGroupException;
import java.rmi.activation.ActivationException;
import java.rmi.RemoteException;

/**
 * FileClassifierServer.java
 *
 *
 * Created: Wed Dec 22 1999
 *
 * @author Jan Newmarch
 * @version 1.0
 */

public class FileClassifierServer implements DiscoveryListener {

    static final protected String SECURITY_POLICY_FILE = 
	"/home/jan/projects/jini/doc/policy.all";
    // Don't forget the trailing '/'!
    static final protected String CODEBASE = "http://localhost/classes/";
    
    // protected FileClassifierImpl impl;
    protected RemoteFileClassifier stub;
    
    public static void main(String argv[]) {
	new FileClassifierServer(argv);
	// stick around while lookup services are found
	try {
	    Thread.sleep(10000L);
	} catch(InterruptedException e) {
	    // do nothing
	}
	// the server doesn't need to exist anymore
	System.exit(0);
    }

    public FileClassifierServer(String[] argv) {
	// install suitable security manager
	System.setSecurityManager(new RMISecurityManager());

	// Install an activation group
	Properties props = new Properties();
	props.put("java.security.policy",
		SECURITY_POLICY_FILE);
	ActivationGroupDesc.CommandEnvironment ace = null;
	ActivationGroupDesc group = new ActivationGroupDesc(props, ace);
	ActivationGroupID groupID = null;
	try {
	    groupID = ActivationGroup.getSystem().registerGroup(group);
	} catch(RemoteException e) {
	    e.printStackTrace();
	    System.exit(1);
	} catch(ActivationException e) {
	    e.printStackTrace();
	    System.exit(1);
	}
	
	try {
	    ActivationGroup.createGroup(groupID, group, 0);
	} catch(ActivationException e) {
	    e.printStackTrace();
	    System.exit(1);
	}
	
	String codebase = CODEBASE;	
	MarshalledObject data = null;
	ActivationDesc desc = null;
	try {
	    desc = new ActivationDesc("activation.FileClassifierImpl",
						 codebase, data);
	} catch(ActivationException e) {
	    e.printStackTrace();
	    System.exit(1);
	}
System.out.println("Group ID " + ActivationGroup.currentGroupID().toString());

	try {
	    stub = (RemoteFileClassifier) Activatable.register(desc);
	} catch(UnknownGroupException e) {
	    e.printStackTrace();
	    System.exit(1);
	} catch(ActivationException e) {
	    e.printStackTrace();
	    System.exit(1);
	} catch(RemoteException e) {
	    e.printStackTrace();
	    System.exit(1);
	}
	
	LookupDiscovery discover = null;
        try {
            discover = new LookupDiscovery(LookupDiscovery.ALL_GROUPS);
        } catch(Exception e) {
            System.err.println(e.toString());
            System.exit(1);
        }

        discover.addDiscoveryListener(this);
    }
    
    public void discovered(DiscoveryEvent evt) {

        ServiceRegistrar[] registrars = evt.getRegistrars();
	RemoteFileClassifier service;

        for (int n = 0; n < registrars.length; n++) {
            ServiceRegistrar registrar = registrars[n];

	    // export the proxy service
	    ServiceItem item = new ServiceItem(null,
					       stub,
					       null);
	    ServiceRegistration reg = null;
	    try {
		reg = registrar.register(item, Lease.FOREVER);
	    } catch(java.rmi.RemoteException e) {
		System.err.print("Register exception: ");
		e.printStackTrace();
		// System.exit(2);
		continue;
	    }
	    try {
		System.out.println("service registered at " +
				   registrar.getLocator().getHost());
	    } catch(Exception e) {
	    }
	}
    }

    public void discarded(DiscoveryEvent evt) {

    }
} // FileClassifierServer