/*
* JBoss, Home of Professional Open Source.
* Copyright 2008, Red Hat Middleware LLC, and individual contributors
* as indicated by the @author tags. See the copyright.txt file in the
* distribution for a full listing of individual contributors.
*
* This is free software; you can redistribute it and/or modify it
* under the terms of the GNU Lesser General Public License as
* published by the Free Software Foundation; either version 2.1 of
* the License, or (at your option) any later version.
*
* This software is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this software; if not, write to the Free
* Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
* 02110-1301 USA, or see the FSF site: http://www.fsf.org.
*/
package org.jboss.test.cluster.defaultcfg.test;
import java.net.InetAddress;
import java.net.UnknownHostException;
import java.util.ArrayList;
import java.util.List;
import junit.framework.Assert;
import junit.framework.TestCase;
import org.jboss.ha.core.framework.server.ClusterNodeFactory;
import org.jboss.ha.framework.interfaces.ClusterNode;
import org.jboss.ha.singleton.PreferredMasterElectionPolicy;
import org.jboss.test.cluster.testutil.TestClusterNodeFactory;
import org.jgroups.stack.IpAddress;
/**
* Unit tests for the preferred master election policy. The tested policy has
* been configured with position 0 which means that the first member of the
* candidate list will be chosen if the preferred master is malformed or
* missing. So, when we expect the preferred master to be chosen, we assert
* against the second candidate. Different test methods will test different
* ways to define the preferred master.
*
* @author <a href="mailto:galder.zamarreno@jboss.com">Galder Zamarreno</a>
*/
public class PreferredMasterElectionPolicyUnitTestCase extends TestCase
{
private PreferredMasterElectionPolicy policy;
private List<ClusterNode> candidates = new ArrayList<ClusterNode>();
private final ClusterNodeFactory factory = new TestClusterNodeFactory();
@Override
protected void setUp() throws UnknownHostException
{
InetAddress localAddress = InetAddress.getByName("localhost");
this.candidates.add(factory.getClusterNode(new IpAddress(localAddress, 10000)));
this.candidates.add(factory.getClusterNode(new IpAddress(localAddress, 10001)));
this.candidates.add(factory.getClusterNode(new IpAddress(localAddress, 10002)));
this.policy = new PreferredMasterElectionPolicy();
}
/**
* @{inheritDoc}
* @see junit.framework.TestCase#tearDown()
*/
@Override
protected void tearDown() throws Exception
{
this.candidates.clear();
}
public void testUsePreferredMasterViaHost()
{
this.policy.setPreferredMaster("localhost:10001");
ClusterNode master = this.policy.elect(this.candidates);
Assert.assertSame(this.candidates.get(1), master);
}
public void testUsePreferredMasterViaAddress()
{
// JBAS-8540
String hostport = "[::1]:10002" ;
// check for IPv4 stack and use correct address literal
if (System.getProperty("java.net.preferIPv4Stack").equals("true"))
hostport = "127.0.0.1:10002" ;
this.policy.setPreferredMaster(hostport);
ClusterNode master = this.policy.elect(this.candidates);
Assert.assertSame(this.candidates.get(2), master);
}
public void testUseDefaultMaster()
{
this.policy.setPreferredMaster("localhost:10003");
ClusterNode master = this.policy.elect(this.candidates);
Assert.assertSame(this.candidates.get(0), master);
this.policy.setPosition(1);
master = this.policy.elect(this.candidates);
Assert.assertSame(this.candidates.get(1), master);
}
public void testUseDefaultMasterNoPreference()
{
ClusterNode master = this.policy.elect(this.candidates);
Assert.assertSame(this.candidates.get(0), master);
this.policy.setPosition(1);
master = this.policy.elect(this.candidates);
Assert.assertSame(this.candidates.get(1), master);
}
public void testUseDefaultMasterEmptyPreference()
{
this.policy.setPreferredMaster("");
ClusterNode master = this.policy.elect(this.candidates);
Assert.assertSame(this.candidates.get(0), master);
this.policy.setPosition(1);
master = this.policy.elect(this.candidates);
Assert.assertSame(this.candidates.get(1), master);
}
public void testMissingHost() throws Exception
{
try
{
this.policy.setPreferredMaster(":1199");
Assert.fail("IllegalArgumentException expected");
}
catch (IllegalArgumentException e)
{
// Expected
}
}
public void testInvalidPort() throws Exception
{
try
{
this.policy.setPreferredMaster("localhost:abcd");
Assert.fail("IllegalArgumentException expected");
}
catch (IllegalArgumentException e)
{
// Expected
}
}
public void testUnknownHost() throws Exception
{
String bogusHost = "onceuponatimeinalandfarfarawaylivedamancalledgalder";
try
{
this.policy.setPreferredMaster(bogusHost + ":1199");
// If the test env has a "helpful" DNS returns the address of some
// ISP web page, this test might fail. Check for and ignore that
// condition
try
{
InetAddress addr = InetAddress.getByName(bogusHost);
if (addr == null)
{
// Nope. It didn't resolve so there is a real problem
Assert.fail("IllegalArgumentException expected");
}
}
catch (UnknownHostException ignored) {}
}
catch (IllegalArgumentException e)
{
// Expected
}
}
public void testGarbage() throws Exception
{
try
{
this.policy.setPreferredMaster("%^$%&%^&$%$£");
Assert.fail("IllegalArgumentException expected");
}
catch (IllegalArgumentException e)
{
// Expected
}
}
}