Tomcat example source code file (ReplicationTransmitter.java)

This example Tomcat source code file (ReplicationTransmitter.java) is included in the DevDaily.com "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Java by Example" ^TM.

Java - Tomcat tags/keywords

channelexception, channelsender, member, multipointsender, multipointsender, pooledparallelsender, replicationtransmitter, replicationtransmitter, string, string, stringmanager, stringmanager

The Tomcat ReplicationTransmitter.java source code

/*
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You under the Apache License, Version 2.0
 * (the "License"); you may not use this file except in compliance with
 * the License.  You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package org.apache.catalina.tribes.transport;

import org.apache.catalina.tribes.ChannelException;
import org.apache.catalina.tribes.ChannelMessage;
import org.apache.catalina.tribes.ChannelSender;
import org.apache.catalina.tribes.Member;
import org.apache.catalina.tribes.util.StringManager;
import org.apache.catalina.tribes.transport.nio.PooledParallelSender;

/**
 * Transmit message to other cluster members
 * Actual senders are created based on the replicationMode
 * type 
 * 
 * @author Filip Hanik
 * @version $Revision: 532800 $ $Date: 2007-04-26 18:52:29 +0200 (jeu., 26 avr. 2007) $
 */
public class ReplicationTransmitter implements ChannelSender {
    private static org.apache.juli.logging.Log log = org.apache.juli.logging.LogFactory.getLog(ReplicationTransmitter.class);

    /**
     * The descriptive information about this implementation.
     */
    private static final String info = "ReplicationTransmitter/3.0";

    /**
     * The string manager for this package.
     */
    protected StringManager sm = StringManager.getManager(Constants.Package);

    

    public ReplicationTransmitter() {
    }

    private MultiPointSender transport = new PooledParallelSender();

    /**
     * Return descriptive information about this implementation and the
     * corresponding version number, in the format
     * <code><description>/<version>.
     */
    public String getInfo() {
        return (info);
    }

    public MultiPointSender getTransport() {
        return transport;
    }

    public void setTransport(MultiPointSender transport) {
        this.transport = transport;
    }
    
    // ------------------------------------------------------------- public
    
    /**
     * Send data to one member
     * @see org.apache.catalina.tribes.ClusterSender#sendMessage(org.apache.catalina.tribes.ClusterMessage, org.apache.catalina.tribes.Member)
     */
    public void sendMessage(ChannelMessage message, Member[] destination) throws ChannelException {
        MultiPointSender sender = getTransport();
        sender.sendMessage(destination,message);
    }
    
    
    /**
     * start the sender and register transmitter mbean
     * 
     * @see org.apache.catalina.tribes.ClusterSender#start()
     */
    public void start() throws java.io.IOException {
        getTransport().connect();
    }

    /*
     * stop the sender and deregister mbeans (transmitter, senders)
     * 
     * @see org.apache.catalina.tribes.ClusterSender#stop()
     */
    public synchronized void stop() {
        getTransport().disconnect();
    }

    /**
     * Call transmitter to check for sender socket status
     * 
     * @see SimpleTcpCluster#backgroundProcess()
     */

    public void heartbeat() {
        if (getTransport()!=null) getTransport().keepalive();
    }

    /**
     * add new cluster member and create sender ( s. replicationMode) transfer
     * current properties to sender
     * 
     * @see org.apache.catalina.tribes.ClusterSender#add(org.apache.catalina.tribes.Member)
     */
    public synchronized void add(Member member) {
        getTransport().add(member);
    }

    /**
     * remove sender from transmitter. ( deregister mbean and disconnect sender )
     * 
     * @see org.apache.catalina.tribes.ClusterSender#remove(org.apache.catalina.tribes.Member)
     */
    public synchronized void remove(Member member) {
        getTransport().remove(member);
    }

    // ------------------------------------------------------------- protected

    

}