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package org.apache.qpid.test.client.failover;
import junit.framework.TestCase;
import org.apache.qpid.client.AMQConnection;
import org.apache.qpid.client.AMQConnectionFactory;
import org.apache.qpid.client.AMQQueue;
import org.apache.qpid.client.transport.TransportConnection;
import org.apache.qpid.jms.ConnectionListener;
import org.apache.qpid.server.registry.ApplicationRegistry;
import org.apache.qpid.url.URLSyntaxException;
import org.apache.log4j.Logger;
import javax.jms.Connection;
import javax.jms.JMSException;
import javax.jms.Message;
import javax.jms.MessageConsumer;
import javax.jms.MessageProducer;
import javax.jms.Session;
import javax.jms.TextMessage;
import java.util.concurrent.CountDownLatch;
public class FailoverTest extends TestCase implements ConnectionListener
{
private static final Logger _logger = Logger.getLogger(FailoverTest.class);
private static final int NUM_BROKERS = 2;
private static final String BROKER = "amqp://guest:guest@/test?brokerlist='vm://:%d;vm://:%d'";
private static final String QUEUE = "queue";
private static final int NUM_MESSAGES = 10;
private Connection con;
private AMQConnectionFactory conFactory;
private Session prodSess;
private AMQQueue q;
private MessageProducer prod;
private Session conSess;
private MessageConsumer consumer;
private static int usedBrokers = 0;
private CountDownLatch failoverComplete;
@Override
protected void setUp() throws Exception
{
super.setUp();
// Create two VM brokers
for (int i = 0; i < NUM_BROKERS; i++)
{
usedBrokers++;
TransportConnection.createVMBroker(usedBrokers);
}
conFactory = new AMQConnectionFactory(String.format(BROKER, usedBrokers - 1, usedBrokers));
_logger.info("Connecting on:" + conFactory.getConnectionURL());
con = conFactory.createConnection();
((AMQConnection) con).setConnectionListener(this);
con.start();
failoverComplete = new CountDownLatch(1);
}
private void init(boolean transacted, int mode) throws JMSException
{
prodSess = con.createSession(transacted, mode);
q = new AMQQueue("amq.direct", QUEUE);
prod = prodSess.createProducer(q);
conSess = con.createSession(transacted, mode);
consumer = conSess.createConsumer(q);
}
@Override
protected void tearDown() throws Exception
{
try
{
con.close();
}
catch (Exception e)
{
}
try
{
TransportConnection.killAllVMBrokers();
ApplicationRegistry.removeAll();
}
catch (Exception e)
{
fail("Unable to clean up");
}
super.tearDown();
}
private void consumeMessages(int toConsume) throws JMSException
{
Message msg;
for (int i = 0; i < toConsume; i++)
{
msg = consumer.receive(1000);
assertNotNull("Message " + i + " was null!", msg);
assertEquals("message " + i, ((TextMessage) msg).getText());
}
}
private void sendMessages(int totalMessages) throws JMSException
{
for (int i = 0; i < totalMessages; i++)
{
prod.send(prodSess.createTextMessage("message " + i));
}
// try
// {
// Thread.sleep(100 * totalMessages);
// }
// catch (InterruptedException e)
// {
// //evil ignoring of IE
// }
}
public void testP2PFailover() throws Exception
{
testP2PFailover(NUM_MESSAGES, true);
}
public void testP2PFailoverWithMessagesLeft() throws Exception
{
testP2PFailover(NUM_MESSAGES, false);
}
private void testP2PFailover(int totalMessages, boolean consumeAll) throws JMSException
{
Message msg = null;
init(false, Session.AUTO_ACKNOWLEDGE);
sendMessages(totalMessages);
// Consume some messages
int toConsume = totalMessages;
if (!consumeAll)
{
toConsume = totalMessages / 2;
}
consumeMessages(toConsume);
_logger.info("Failing over");
causeFailure();
msg = consumer.receive(500);
//todo: reinstate
assertNull("Should not have received message from new broker!", msg);
// Check that messages still sent / received
sendMessages(totalMessages);
consumeMessages(totalMessages);
}
private void causeFailure()
{
_logger.info("Failover");
TransportConnection.killVMBroker(usedBrokers - 1);
ApplicationRegistry.remove(usedBrokers - 1);
_logger.info("Awaiting Failover completion");
try
{
failoverComplete.await();
}
catch (InterruptedException e)
{
//evil ignore IE.
}
}
public void testClientAckFailover() throws Exception
{
init(false, Session.CLIENT_ACKNOWLEDGE);
sendMessages(1);
Message msg = consumer.receive();
assertNotNull("Expected msgs not received", msg);
causeFailure();
Exception failure = null;
try
{
msg.acknowledge();
}
catch (Exception e)
{
failure = e;
}
assertNotNull("Exception should be thrown", failure);
}
// This test disabled so that it doesn't add 4 minnutes to the length of time it takes to run, which would be lame
public void txest4MinuteFailover() throws Exception
{
conFactory = new AMQConnectionFactory("amqp://guest:guest@/test?brokerlist='vm://:"+(usedBrokers-1)+"?connectdelay='60000'&retries='2''");
_logger.info("Connecting on:" + conFactory.getConnectionURL());
con = conFactory.createConnection();
((AMQConnection) con).setConnectionListener(this);
con.start();
long failTime = System.currentTimeMillis() + 60000;
causeFailure();
assertTrue("Failover did not take long enough", System.currentTimeMillis() > failTime);
}
public void bytesSent(long count)
{
}
public void bytesReceived(long count)
{
}
public boolean preFailover(boolean redirect)
{
return true;
}
public boolean preResubscribe()
{
return true;
}
public void failoverComplete()
{
failoverComplete.countDown();
}
}
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