/**
* Licensed to Ravel, Inc. under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. Ravel, Inc. 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.goldenorb.queue;
import static org.hamcrest.CoreMatchers.notNullValue;
import static org.junit.Assert.assertThat;
import static org.junit.Assert.assertTrue;
import java.util.HashMap;
import java.util.Map;
import java.util.concurrent.CountDownLatch;
import org.apache.hadoop.io.Text;
import org.apache.hadoop.io.Writable;
import org.goldenorb.Message;
import org.goldenorb.Messages;
import org.goldenorb.OrbPartitionCommunicationProtocol;
import org.goldenorb.types.message.TextMessage;
import org.junit.Test;
/**
* Tests the OutboundMessageQueue by using multithreading and sending large numbers of messages.
*/
public class OutboundMessageQueueTest {
QueueInfoCollector infoCollector = new QueueInfoCollector();
@Test
public void testOutBoundMessageQueue() throws Exception {
// OutboundMessageQueue settings
int numberOfPartitions = 100;
int numOfMessagesToSendPerThread = 10500; // max number of Messages to be sent by a Thread
int numOfMessagesPerBlock = 1000; // max number of Messages to trigger a send operation by the queue
int partitionId = 1;
Class<? extends Message<? extends Writable>> messageClass = TextMessage.class;
Map<Integer,OrbPartitionCommunicationProtocol> orbClients = new HashMap<Integer,OrbPartitionCommunicationProtocol>();
for (int i = 0; i < numberOfPartitions; i++) {
orbClients.put(new Integer(i), infoCollector);
}
OutboundMessageQueue omq = new OutboundMessageQueue(numberOfPartitions, numOfMessagesPerBlock,
orbClients, messageClass, partitionId);
// initialize the Threads and pass them their test Messages
CountDownLatch startLatch = new CountDownLatch(1);
CountDownLatch everyoneDoneLatch = new CountDownLatch(numberOfPartitions);
for (int i = 0; i < numberOfPartitions; i++) {
Messages msgs = new Messages(TextMessage.class);
for (int p = 0; p < numOfMessagesToSendPerThread; p++) {
TextMessage txtmsg = new TextMessage(Integer.toString(i), new Text("test message "
+ Integer.toString(p)));
msgs.add(txtmsg);
}
OutboundMessageThread obmThread = new OutboundMessageThread(msgs, omq, startLatch, everyoneDoneLatch);
obmThread.start(); // initialize a Thread
}
startLatch.countDown(); // start all Threads simultaneously
everyoneDoneLatch.await(); // wait until all Threads are done
omq.sendRemainingMessages();
assertThat(omq, notNullValue());
assertTrue(infoCollector.mList.size() == (numberOfPartitions * numOfMessagesToSendPerThread));
}
}
/**
* This class defines the Threads that can be used to add messages to an OutboundMessageQueue simultaneously.
*
*/
class OutboundMessageThread extends Thread {
private Messages msgs;
private OutboundMessageQueue omq;
private CountDownLatch startLatch;
private CountDownLatch everyoneDoneLatch;
/**
* Constructs an OutboundMessageThread.
*
* @param msgs
* @param omq
* @param startLatch
* @param everyoneDoneLatch
*/
public OutboundMessageThread(Messages msgs,
OutboundMessageQueue omq,
CountDownLatch startLatch,
CountDownLatch everyoneDoneLatch) {
this.msgs = msgs;
this.omq = omq;
this.startLatch = startLatch;
this.everyoneDoneLatch = everyoneDoneLatch;
}
/**
* Adds messages to the OutboundMessageQueue.
*/
@SuppressWarnings({"rawtypes", "unchecked"})
public void run() {
try {
startLatch.await();
for (Message msg : msgs.getList()) {
omq.sendMessage(msg);
}
everyoneDoneLatch.countDown();
} catch (InterruptedException e) {
e.printStackTrace();
} catch (NullPointerException e) {
e.printStackTrace();
}
}
}