/*

 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.

 *

 * This code is free software; you can redistribute it and/or modify it

 * under the terms of the GNU General Public License version 2 only, as

 * published by the Free Software Foundation.

 *

 * This code is distributed in the hope that it will be useful, but WITHOUT

 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or

 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License

 * version 2 for more details (a copy is included in the LICENSE file that

 * accompanied this code).

 *

 * You should have received a copy of the GNU General Public License version

 * 2 along with this work; if not, write to the Free Software Foundation,

 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.

 *

 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,

 * CA 95054 USA or visit www.sun.com if you need additional information or

 * have any questions.

 */

/*

 */

import java.rmi.*;

import java.rmi.activation.*;

import java.rmi.server.*;

import java.security.CodeSource;

import java.net.URL;

public class EchoImpl

    extends Activatable

    implements Echo, Runnable

{

    private static final byte[] pattern = { (byte) 'A' };

    /**

     * Initialization constructor.

     */

    public EchoImpl(String protocol)

        throws ActivationException, RemoteException

    {

        super(null, makeMarshalledObject(protocol), false, 0,

              new MultiSocketFactory.ClientFactory(protocol, pattern),

              new MultiSocketFactory.ServerFactory(protocol, pattern));

    }

    /**

     * Activation constructor.

     */

    public EchoImpl(ActivationID id, MarshalledObject obj)

        throws RemoteException

    {

        super(id, 0,

              new MultiSocketFactory.ClientFactory(getProtocol(obj), pattern),

              new MultiSocketFactory.ServerFactory(getProtocol(obj), pattern));

    }

    private static MarshalledObject makeMarshalledObject(String protocol) {

        MarshalledObject obj = null;

        try {

            obj = new MarshalledObject(protocol);

        } catch (Exception willNotHappen) {

        }

        return obj;

    }

    private static String getProtocol(MarshalledObject obj) {

        String protocol = "";

        try {

            protocol = (String) obj.get();

        } catch (Exception willNotHappen) {

        }

        return protocol;

    }

    public byte[] echoNot(byte[] data) {

        byte[] result = new byte[data.length];

        for (int i = 0; i < data.length; i++)

            result[i] = (byte) ~data[i];

        return result;

    }

    /**

     * Spawns a thread to deactivate the object.

     */

    public void shutdown() throws Exception

    {

        (new Thread(this,"Echo.shutdown")).start();

    }

    /**

     * Thread to deactivate object. First attempts to make object

     * inactive (via the inactive method).  If that fails (the

     * object may still have pending/executing calls), then

     * unexport the object forcibly.

     */

    public void run()

    {

        ActivationLibrary.deactivate(this, getID());

    }

    public static void main(String[] args) {

        /*

         * The following line is required with the JDK 1.2 VM so that the

         * VM can exit gracefully when this test completes.  Otherwise, the

         * conservative garbage collector will find a handle to the server

         * object on the native stack and not clear the weak reference to

         * it in the RMI runtime's object table.

         */

        Object dummy = new Object();

        System.setSecurityManager(new RMISecurityManager());

        try {

            String protocol = "";

            if (args.length >= 1)

                protocol = args[0];

            System.out.println("EchoServer: creating remote object");

            ActivationGroupDesc groupDesc =

                new ActivationGroupDesc(null, null);

            ActivationSystem system = ActivationGroup.getSystem();

            ActivationGroupID groupID = system.registerGroup(groupDesc);

            ActivationGroup.createGroup(groupID, groupDesc, 0);

            EchoImpl impl = new EchoImpl(protocol);

            System.out.println("EchoServer: binding in registry");

            Naming.rebind("//:" + UseCustomSocketFactory.REGISTRY_PORT +

                          "/EchoServer", impl);

            System.out.println("EchoServer ready.");

        } catch (Exception e) {

            System.err.println("EXCEPTION OCCURRED:");

            e.printStackTrace();

        }

    }

}