/*
* JBoss, Home of Professional Open Source.
* Copyright 2008, Red Hat Middleware LLC, and individual contributors
* as indicated by the @author tags. See the copyright.txt file in the
* distribution for a full listing of individual contributors.
*
* This is free software; you can redistribute it and/or modify it
* under the terms of the GNU Lesser General Public License as
* published by the Free Software Foundation; either version 2.1 of
* the License, or (at your option) any later version.
*
* This software 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this software; if not, write to the Free
* Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
* 02110-1301 USA, or see the FSF site: http://www.fsf.org.
*/
package org.jboss.invocation;
import java.rmi.Remote;
import org.jboss.proxy.Interceptor;
import org.jboss.util.id.GUID;
/**
* This invoker carries Invocation in the JMX target node.
*
* <p>
* The interface in the current JBoss can be implemented with Remote/local switches or
* with clustered invokers, this interface just masks the network details and the topology
* of the JMX nodes for the client proxies.
*
* @author <a href="mailto:marc@jboss.org">Marc Fleury</a>
* @version $Revision: 81030 $
*
* <p><b>Revisions:</b>
*
* <p><b>20011114 marc fleury:</b>
* <ul>
* <li>Initial check-in
* </ul>
*/
public interface Invoker
extends Remote
{
/**
* A globaly unique identifier use to determine if an instance is local
* to the invoker.
*/
GUID ID = new GUID();
/**
* A free form String identifier for this delegate invoker, can be clustered or target node
* This should evolve in a more advanced meta-inf object
*/
String getServerHostName() throws Exception;
/**
* The invoke with an Invocation Object.
*
* <p>
* the delegate can handle network protocols on behalf of proxies (proxies delegate to these
* puppies). We provide default implemenations with JRMP/Local/Clustered invokers.
* The delegates are not tied to a type of invocation (EJB or generic RMI).
*
* @param invocation A pointer to the invocation object
* @return Return value of method invocation.
*
* @throws Exception Failed to invoke method.
*/
Object invoke(Invocation invocation) throws Exception;
}