catalinacluster.java

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/*
 * $Header: /home/cvs/jakarta-tomcat-catalina/modules/cluster/src/share/org/apache/catalina/cluster/CatalinaCluster.java,v 1.3 2004/02/05 16:07:57 fhanik Exp $
 * $Revision: 1.3 $
 * $Date: 2004/02/05 16:07:57 $
 *
 * ====================================================================
 *
 * The Apache Software License, Version 1.1
 *
 * Copyright (c) 1999 The Apache Software Foundation.  All rights
 * reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 *
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in
 *    the documentation and/or other materials provided with the
 *    distribution.
 *
 * 3. The end-user documentation included with the redistribution, if
 *    any, must include the following acknowlegement:
 *       "This product includes software developed by the
 *        Apache Software Foundation (http://www.apache.org/)."
 *    Alternately, this acknowlegement may appear in the software itself,
 *    if and wherever such third-party acknowlegements normally appear.
 *
 * 4. The names "The Jakarta Project", "Tomcat", and "Apache Software
 *    Foundation" must not be used to endorse or promote products derived
 *    from this software without prior written permission. For written
 *    permission, please contact [e-mail].
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 * 5. Products derived from this software may not be called "Apache"
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 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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 * SUCH DAMAGE.
 * ====================================================================
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 * This software consists of voluntary contributions made by many
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 * information on the Apache Software Foundation, please see
 * <http://www.apache.org/>.
 *
 * [Additional notices, if required by prior licensing conditions]
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 */

package org.apache.catalina.cluster;

import org.apache.catalina.Cluster;
import org.apache.catalina.cluster.io.ListenCallback;
import org.apache.catalina.LifecycleException;
import org.apache.catalina.LifecycleListener;
import org.apache.catalina.Logger;
import org.apache.catalina.Valve;
import org.apache.commons.logging.Log;

/**
 * A <b>CatalinaCluster</b> interface allows to plug in and out the 
 * different cluster implementations
 *
 * @author Filip Hanik
 * @version $Revision: 1.3 $, $Date: 2004/02/05 16:07:57 $
 */

public interface CatalinaCluster
    extends Cluster,ListenCallback {
    // ----------------------------------------------------- Instance Variables

    /**
     * Descriptive information about this component implementation.
     */
    public String info = "CatalinaCluster/1.0";
    
    /**
     * Start the cluster, the owning container will invoke this
     * @throws Exception - if failure to start cluster
     */
    public void start() throws Exception;
    
    /**
     * Stops the cluster, the owning container will invoke this
     * @throws LifecycleException
     */
    public void stop() throws LifecycleException;
    
    /**
     * Returns the associates logger with this cluster
     * @return Log
     */
    public Log getLogger();
    
    /**
     * Sends a message to all the members in the cluster
     * @param msg SessionMessage
     */
    public void send(SessionMessage msg);
    
    /**
     * Sends a message to a specific member in the cluster
     * @param msg SessionMessage
     * @param dest Member
     */
    public void send(SessionMessage msg, Member dest);
    
    /**
     * returns all the members currently participating in the cluster
     * @return Member[]
     */
    public Member[] getMembers();
    
    public void setClusterSender(ClusterSender sender);
    
    public ClusterSender getClusterSender();
    
    public void setClusterReceiver(ClusterReceiver receiver);
    
    public ClusterReceiver getClusterReceiver();
    
    public void setMembershipService(MembershipService service);
    
    public MembershipService getMembershipService();
    
    public void addValve(Valve valve);
    
}