/*
* JBoss, the OpenSource J2EE webOS
*
* Distributable under LGPL license.
* See terms of license at gnu.org.
*/
package org.jboss.cache.marshall;
import junit.framework.TestCase;
import org.jboss.cache.TreeCache;
import org.jboss.cache.TreeCacheMBean;
import org.jgroups.Global;
import java.io.File;
import java.net.MalformedURLException;
import java.net.URL;
import java.net.URLClassLoader;
/**
* Unit test demonstrating usability of marshalling for application redeployment in application server.
*
* @author <a href="mailto:galder.zamarreno@jboss.com">Galder Zamarreno</a>
*/
public class RedeploymentEmulationTest extends TestCase
{
private TreeCacheMBean tcmb;
private static final String INSTANCE_LIBRARY = "jgroups.jar";
private static final String INSTANCE_CLASS_NAME = "org.jgroups.Global";
private static final String USER_DIR = ".";//System.getProperty("user.dir");
private static final String FILE_SEPARATOR = File.separator;//System.getProperty("file.separator");
private static final String LIB_DIR_NAME = "lib";
private static final String LIB_DIR = USER_DIR + FILE_SEPARATOR + LIB_DIR_NAME + FILE_SEPARATOR;
private static final String LIB_DIR_SP = System.getProperty("lib.dir");//"lib";
protected void setUp() throws Exception
{
TreeCache tc = new TreeCache();
tc.setCacheMode(TreeCache.LOCAL);
tc.setUseRegionBasedMarshalling(true);
tcmb = tc;
}
protected void tearDown()
{
tcmb.stop();
}
public void testClassCastException() throws Exception
{
tcmb.startService();
URLClassLoader ucl1 = createOrphanClassLoader();
Thread.currentThread().setContextClassLoader(ucl1);
Class clazz1 = ucl1.loadClass(INSTANCE_CLASS_NAME);
tcmb.put("/a", "key", clazz1.newInstance());
Thread.currentThread().setContextClassLoader(ClassLoader.getSystemClassLoader());
try
{
Global object = (Global)tcmb.get("/a", "key");
fail("Should have produced a ClassCastException");
}
catch(ClassCastException cce)
{
if (cce.getMessage() != null) assertTrue(cce.getMessage().equals(INSTANCE_CLASS_NAME));
}
}
public void testRegisterUnregister() throws Exception
{
tcmb.startService();
URLClassLoader ucl1 = createOrphanClassLoader();
Thread.currentThread().setContextClassLoader(ucl1);
tcmb.registerClassLoader("/", Thread.currentThread().getContextClassLoader());
Class clazz1 = ucl1.loadClass(INSTANCE_CLASS_NAME);
tcmb.put("/a", "key", clazz1.newInstance());
tcmb.inactivateRegion("/");
tcmb.unregisterClassLoader("/");
Thread.currentThread().setContextClassLoader(ClassLoader.getSystemClassLoader());
tcmb.registerClassLoader("/", Thread.currentThread().getContextClassLoader());
try
{
Global object = (Global)tcmb.get("/a", "key");
assertNull(object);
}
catch(ClassCastException cce)
{
fail("Should not have produced a ClassCastException");
}
tcmb.inactivateRegion("/");
tcmb.unregisterClassLoader("/");
}
private URLClassLoader createOrphanClassLoader() throws MalformedURLException
{
File f;
if (LIB_DIR_SP == null)
{
/* lib.dir system property is null, so we assume this test is being run
* inside an IDE, where the user dir is the root of JBossCache. We know
* JGroups lib is located in lib/jgroups.jar */
f = new File(USER_DIR + FILE_SEPARATOR + LIB_DIR + FILE_SEPARATOR);
}
else
{
/* lib.dir is set, so we assume that you are running from the build.xml
* which means that the user dir might be a completely different one. lib.dir
* system property allows us to know where the lib directory is independently
* of the user dir*/
f = new File(LIB_DIR_SP);
}
URL context = f.toURL();
URL jar = new URL(context, INSTANCE_LIBRARY);
URLClassLoader ucl1 = new URLClassLoader(new URL[]{jar}, null);
return ucl1;
}
}