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/*
*
* 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.qpid.server.failover;
import junit.framework.TestCase;
import org.apache.qpid.AMQDisconnectedException;
import org.apache.qpid.AMQException;
import org.apache.qpid.client.AMQConnection;
import org.apache.qpid.client.AMQConnectionURL;
import org.apache.qpid.client.transport.TransportConnection;
import org.apache.qpid.client.vmbroker.AMQVMBrokerCreationException;
import org.apache.qpid.url.URLSyntaxException;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import javax.jms.ExceptionListener;
import javax.jms.JMSException;
import java.util.concurrent.CountDownLatch;
public class FailoverMethodTest extends TestCase implements ExceptionListener
{
private CountDownLatch _failoverComplete = new CountDownLatch(1);
public void setUp() throws AMQVMBrokerCreationException
{
TransportConnection.createVMBroker(1);
}
public void tearDown() throws AMQVMBrokerCreationException
{
TransportConnection.killAllVMBrokers();
}
/**
* Test that the round robin method has the correct delays.
* The first connection to vm://:1 will work but the localhost connection should fail but the duration it takes
* to report the failure is what is being tested.
*
* @throws URLSyntaxException
* @throws InterruptedException
* @throws JMSException
*/
public void testFailoverRoundRobinDelay() throws URLSyntaxException, InterruptedException, JMSException
{
//note: The VM broker has no connect delay and the default 1 retry
// while the tcp:localhost broker has 3 retries with a 2s connect delay
String connectionString = "amqp://guest:guest@/test?brokerlist=" +
"'vm://:1;tcp://localhost:5670?connectdelay='2000',retries='3''";
AMQConnectionURL url = new AMQConnectionURL(connectionString);
try
{
long start = System.currentTimeMillis();
AMQConnection connection = new AMQConnection(url, null);
connection.setExceptionListener(this);
TransportConnection.killAllVMBrokers();
_failoverComplete.await();
long end = System.currentTimeMillis();
long duration = (end - start);
//Failover should take more that 6 seconds.
// 3 Retires
// so VM Broker NoDelay 0 (Connect) NoDelay 0
// then TCP NoDelay 0 Delay 1 Delay 2 Delay 3
// so 3 delays of 2s in total for connection
// as this is a tcp connection it will take 1second per connection to fail
// so max time is 6seconds of delay plus 4 seconds of TCP Delay + 1 second of runtime. == 11 seconds
// Ensure we actually had the delay
assertTrue("Failover took less than 6 seconds", duration > 6000);
// Ensure we don't have delays before initial connection and reconnection.
// We allow 1 second for initial connection and failover logic on top of 6s of sleep.
assertTrue("Failover took more than 11 seconds:(" + duration + ")", duration < 11000);
}
catch (AMQException e)
{
fail(e.getMessage());
}
}
public void testFailoverSingleDelay() throws URLSyntaxException, AMQVMBrokerCreationException,
InterruptedException, JMSException
{
String connectionString = "amqp://guest:guest@/test?brokerlist='vm://:1?connectdelay='2000',retries='3''";
AMQConnectionURL url = new AMQConnectionURL(connectionString);
try
{
long start = System.currentTimeMillis();
AMQConnection connection = new AMQConnection(url, null);
connection.setExceptionListener(this);
TransportConnection.killAllVMBrokers();
_failoverComplete.await();
long end = System.currentTimeMillis();
long duration = (end - start);
//Failover should take more that 6 seconds.
// 3 Retires
// so NoDelay 0 (Connect) NoDelay 0 Delay 1 Delay 2 Delay 3
// so 3 delays of 2s in total for connection
// so max time is 6 seconds of delay + 1 second of runtime. == 7 seconds
// Ensure we actually had the delay
assertTrue("Failover took less than 6 seconds", duration > 6000);
// Ensure we don't have delays before initial connection and reconnection.
// We allow 1 second for initial connection and failover logic on top of 6s of sleep.
assertTrue("Failover took more than 7 seconds:(" + duration + ")", duration < 7000);
}
catch (AMQException e)
{
fail(e.getMessage());
}
}
public void onException(JMSException e)
{
if (e.getLinkedException() instanceof AMQDisconnectedException)
{
_failoverComplete.countDown();
}
}
}
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