org.eclipse.jetty.plus.webapp.PlusConfiguration Maven / Gradle / Ivy
//
// ========================================================================
// Copyright (c) 1995-2016 Mort Bay Consulting Pty. Ltd.
// ------------------------------------------------------------------------
// All rights reserved. This program and the accompanying materials
// are made available under the terms of the Eclipse Public License v1.0
// and Apache License v2.0 which accompanies this distribution.
//
// The Eclipse Public License is available at
// http://www.eclipse.org/legal/epl-v10.html
//
// The Apache License v2.0 is available at
// http://www.opensource.org/licenses/apache2.0.php
//
// You may elect to redistribute this code under either of these licenses.
// ========================================================================
//
package org.eclipse.jetty.plus.webapp;
import java.util.Random;
import javax.naming.Context;
import javax.naming.InitialContext;
import javax.naming.NameNotFoundException;
import org.eclipse.jetty.plus.annotation.InjectionCollection;
import org.eclipse.jetty.plus.annotation.LifeCycleCallbackCollection;
import org.eclipse.jetty.plus.jndi.Transaction;
import org.eclipse.jetty.util.log.Log;
import org.eclipse.jetty.util.log.Logger;
import org.eclipse.jetty.webapp.AbstractConfiguration;
import org.eclipse.jetty.webapp.WebAppContext;
/**
* Configuration
*
*
*/
public class PlusConfiguration extends AbstractConfiguration
{
private static final Logger LOG = Log.getLogger(PlusConfiguration.class);
private Integer _key;
@Override
public void preConfigure (WebAppContext context)
throws Exception
{
context.addDecorator(new PlusDecorator(context));
}
@Override
public void cloneConfigure(WebAppContext template, WebAppContext context) throws Exception
{
context.addDecorator(new PlusDecorator(context));
}
@Override
public void configure (WebAppContext context)
throws Exception
{
bindUserTransaction(context);
context.getMetaData().addDescriptorProcessor(new PlusDescriptorProcessor());
}
@Override
public void postConfigure(WebAppContext context) throws Exception
{
//lock this webapp's java:comp namespace as per J2EE spec
lockCompEnv(context);
}
@Override
public void deconfigure (WebAppContext context)
throws Exception
{
unlockCompEnv(context);
_key = null;
context.setAttribute(InjectionCollection.INJECTION_COLLECTION,null);
context.setAttribute(LifeCycleCallbackCollection.LIFECYCLE_CALLBACK_COLLECTION,null);
}
public void bindUserTransaction (WebAppContext context)
throws Exception
{
try
{
Transaction.bindToENC();
}
catch (NameNotFoundException e)
{
LOG.info("No Transaction manager found - if your webapp requires one, please configure one.");
}
}
protected void lockCompEnv (WebAppContext wac)
throws Exception
{
ClassLoader old_loader = Thread.currentThread().getContextClassLoader();
Thread.currentThread().setContextClassLoader(wac.getClassLoader());
try
{
Random random = new Random ();
_key = new Integer(random.nextInt());
Context context = new InitialContext();
Context compCtx = (Context)context.lookup("java:comp");
compCtx.addToEnvironment("org.eclipse.jndi.lock", _key);
}
finally
{
Thread.currentThread().setContextClassLoader(old_loader);
}
}
protected void unlockCompEnv (WebAppContext wac)
throws Exception
{
if (_key!=null)
{
ClassLoader old_loader = Thread.currentThread().getContextClassLoader();
Thread.currentThread().setContextClassLoader(wac.getClassLoader());
try
{
Context context = new InitialContext();
Context compCtx = (Context)context.lookup("java:comp");
compCtx.addToEnvironment("org.eclipse.jndi.unlock", _key);
}
finally
{
Thread.currentThread().setContextClassLoader(old_loader);
}
}
}
}
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