Tomcat example source code file (TestSenderConnections.java)

This example Tomcat source code file (TestSenderConnections.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

arraylist, exception, exception, groupchannel, hashmap, io, managedchannel, member, member, replicationtransmitter, testcase, testmsg, testmsg, testmsglistener, testmsglistener, util

The Tomcat TestSenderConnections.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.test.io;

import java.util.ArrayList;

import org.apache.catalina.tribes.Channel;
import org.apache.catalina.tribes.ManagedChannel;
import org.apache.catalina.tribes.Member;
import org.apache.catalina.tribes.MembershipListener;
import org.apache.catalina.tribes.group.GroupChannel;
import junit.framework.TestCase;
import org.apache.catalina.tribes.ChannelListener;
import java.io.Serializable;
import java.util.Random;
import java.util.HashMap;
import org.apache.catalina.tribes.transport.ReplicationTransmitter;

public class TestSenderConnections extends TestCase {
    private static int count = 2;
    private ManagedChannel[] channels = new ManagedChannel[count];
    private TestMsgListener[] listeners = new TestMsgListener[count];

    protected void setUp() throws Exception {
        super.setUp();
        for (int i = 0; i < channels.length; i++) {
            channels[i] = new GroupChannel();
            channels[i].getMembershipService().setPayload( ("Channel-" + (i + 1)).getBytes("ASCII"));
            listeners[i] = new TestMsgListener( ("Listener-" + (i + 1)));
            channels[i].addChannelListener(listeners[i]);
            channels[i].start(Channel.SND_RX_SEQ|Channel.SND_TX_SEQ);

        }
    }

    public void clear() {
    }

    public void sendMessages(long delay, long sleep) throws Exception {
        Member local = channels[0].getLocalMember(true);
        Member dest = channels[1].getLocalMember(true);
        int n = 3;
        System.out.println("Sending " + n + " messages from [" + local.getName() + "] to [" + dest.getName() + "]");
        for (int i = 0; i < n; i++) {
            channels[0].send(new Member[] {dest}, new TestMsg(), 0);
            if ( delay > 0 ) Thread.sleep(delay);
        }
        System.out.println("Messages sent. Sleeping for "+(sleep/1000)+" seconds to inspect connections");
        if ( sleep > 0 ) Thread.sleep(sleep);

    }

    public void testConnectionLinger() throws Exception {
        sendMessages(0,15000);
    }
    
    public void testKeepAliveCount() throws Exception {
        System.out.println("Setting keep alive count to 0");
        for (int i = 0; i < channels.length; i++) {
            ReplicationTransmitter t = (ReplicationTransmitter)channels[0].getChannelSender();
            t.getTransport().setKeepAliveCount(0);
        }
        sendMessages(1000,15000);
    }

    public void testKeepAliveTime() throws Exception {
        System.out.println("Setting keep alive count to 1 second");
        for (int i = 0; i < channels.length; i++) {
            ReplicationTransmitter t = (ReplicationTransmitter)channels[0].getChannelSender();
            t.getTransport().setKeepAliveTime(1000);
        }
        sendMessages(2000,15000);
    }

    protected void tearDown() throws Exception {
        for (int i = 0; i < channels.length; i++) {
            channels[i].stop(Channel.DEFAULT);
        }

    }
    
    public static class TestMsg implements Serializable {
        static Random r = new Random(System.currentTimeMillis());
        HashMap map = new HashMap();
        public TestMsg() {
            int size = Math.abs(r.nextInt() % 200);
            for (int i=0; i<size; i++ ) {
                int length = Math.abs(r.nextInt() %65000);
                ArrayList list = new ArrayList(length);
                map.put(new Integer(i),list);
            }
        }
    }

    public class TestMsgListener implements ChannelListener {
        public String name = null;
        public TestMsgListener(String name) {
            this.name = name;
        }
        
        public void messageReceived(Serializable msg, Member sender) {
            System.out.println("["+name+"] Received message:"+msg+" from " + sender.getName());
        }

    
        public boolean accept(Serializable msg, Member sender) {
            return true;
        }


        
    }

}