Tomcat example source code file (TestNonBlockingCoordinator.java)

This example Tomcat source code file (TestNonBlockingCoordinator.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

exception, exception, groupchannel, groupchannel, member, message, nonblockingcoordinator, nonblockingcoordinator, tcpfailuredetector, testcase, testresult, testsuite, thread, thread

The Tomcat TestNonBlockingCoordinator.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.interceptors;

import org.apache.catalina.tribes.Channel;
import org.apache.catalina.tribes.Member;
import org.apache.catalina.tribes.group.GroupChannel;
import org.apache.catalina.tribes.group.interceptors.NonBlockingCoordinator;
import org.apache.catalina.tribes.group.interceptors.TcpFailureDetector;
import junit.framework.TestCase;
import junit.framework.TestResult;
import junit.framework.TestSuite;

public class TestNonBlockingCoordinator extends TestCase {

    GroupChannel[] channels = null;
    NonBlockingCoordinator[] coordinators = null;
    int channelCount = 10;
    Thread[] threads = null;
    protected void setUp() throws Exception {
        System.out.println("Setup");
        super.setUp();
        channels = new GroupChannel[channelCount];
        coordinators = new NonBlockingCoordinator[channelCount];
        threads = new Thread[channelCount];
        for ( int i=0; i<channelCount; i++ ) {
            channels[i] = new GroupChannel();
            coordinators[i] = new NonBlockingCoordinator();
            channels[i].addInterceptor(coordinators[i]);
            channels[i].addInterceptor(new TcpFailureDetector());
            final int j = i;
            threads[i] = new Thread() {
                public void run() {
                    try {
                        channels[j].start(Channel.DEFAULT);
                        Thread.sleep(50);
                    } catch (Exception x) {
                        x.printStackTrace();
                    }
                }
            };
        }
        for ( int i=0; i<channelCount; i++ ) threads[i].start();
        for ( int i=0; i<channelCount; i++ ) threads[i].join();
        Thread.sleep(1000);
    }
    
    public void testCoord1() throws Exception {
        for (int i=1; i<channelCount; i++ ) 
            assertEquals("Message count expected to be equal.",channels[i-1].getMembers().length,channels[i].getMembers().length);
        Member member = coordinators[0].getCoordinator();
        int cnt = 0;
        while ( member == null && (cnt++ < 100 ) ) try {Thread.sleep(100); member = coordinators[0].getCoordinator();}catch ( Exception x){}
        for (int i=0; i<channelCount; i++ ) super.assertEquals(member,coordinators[i].getCoordinator());
        System.out.println("Coordinator[1] is:"+member);
        
    }
    
    public void testCoord2() throws Exception {
        Member member = coordinators[1].getCoordinator();
        System.out.println("Coordinator[2a] is:" + member);
        int index = -1;
        for ( int i=0; i<channelCount; i++ ) {
            if ( channels[i].getLocalMember(false).equals(member) ) {
                System.out.println("Shutting down:" + channels[i].getLocalMember(true).toString());
                channels[i].stop(Channel.DEFAULT);
                index = i;
            }
        }
        int dead = index;
        Thread.sleep(1000);
        if ( index == 0 ) index = 1; else index = 0;
        System.out.println("Member count:"+channels[index].getMembers().length);
        member = coordinators[index].getCoordinator();
        for (int i = 1; i < channelCount; i++) if ( i != dead ) super.assertEquals(member, coordinators[i].getCoordinator());
        System.out.println("Coordinator[2b] is:" + member);
    }

    protected void tearDown() throws Exception {
        System.out.println("tearDown");
        super.tearDown();
        for ( int i=0; i<channelCount; i++ ) {
            channels[i].stop(Channel.DEFAULT);
        }
    }
    
    public static void main(String[] args) throws Exception {
        TestSuite suite = new TestSuite();
        suite.addTestSuite(TestNonBlockingCoordinator.class);
        suite.run(new TestResult());
    }
    
    
    
    

}