Package org.jboss.arquillian.osgi

Source Code of org.jboss.arquillian.osgi.ArquillianBundleActivator

/*
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* Copyright 2005, JBoss Inc., and individual contributors as indicated
* by the @authors tag. See the copyright.txt 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.arquillian.osgi;

import java.util.ArrayList;
import java.util.logging.Logger;

import javax.management.MBeanServer;
import javax.management.MBeanServerFactory;

import org.jboss.arquillian.protocol.jmx.JMXTestRunner;
import org.jboss.arquillian.protocol.jmx.JMXTestRunner.TestClassLoader;
import org.jboss.arquillian.testenricher.osgi.BundleAssociation;
import org.jboss.arquillian.testenricher.osgi.BundleContextAssociation;
import org.osgi.framework.Bundle;
import org.osgi.framework.BundleActivator;
import org.osgi.framework.BundleContext;
import org.osgi.framework.ServiceReference;
import org.osgi.service.packageadmin.PackageAdmin;

/**
* This is the Arquillian {@link BundleActivator}.
*
* It unconditionally starts the {@link AbstractTestRunner}.
*
* @author thomas.diesler@jboss.com
* @since 17-May-2009
*/
public class ArquillianBundleActivator implements BundleActivator
{
   // Provide logging
   private static Logger log = Logger.getLogger(ArquillianBundleActivator.class.getName());

   private JMXTestRunner testRunner;

   public void start(final BundleContext context) throws Exception
   {
      ServiceReference sref = context.getServiceReference(PackageAdmin.class.getName());
      final PackageAdmin pa = (PackageAdmin)context.getService(sref);

      final TestClassLoader testClassLoader = new TestClassLoader()
      {
         @Override
         public Class<?> loadTestClass(String className) throws ClassNotFoundException
         {
            Bundle arqBundle = context.getBundle();
            BundleContext sysContext = context.getBundle(0).getBundleContext();
            BundleContextAssociation.setBundleContext(sysContext);
            Class<?> testClass = arqBundle.loadClass(className);
            Bundle testBundle = pa.getBundle(testClass);
            BundleAssociation.setBundle(testBundle);
            return testClass;
         }

         @Override
         public ClassLoader getServiceClassLoader()
         {
            return ArquillianBundleActivator.class.getClassLoader();
         }
      };

      // Register the JMXTestRunner
      MBeanServer mbeanServer = getMBeanServer(context);
      testRunner = new JMXTestRunner()
      {
         @Override
         protected TestClassLoader getTestClassLoader()
         {
            return testClassLoader;
         }
      };
      testRunner.registerMBean(mbeanServer);
   }

   public void stop(BundleContext context) throws Exception
   {
      // Unregister the JMXTestRunner
      MBeanServer mbeanServer = getMBeanServer(context);
      testRunner.unregisterMBean(mbeanServer);
   }

   private MBeanServer getMBeanServer(BundleContext context)
   {
      // Check if the MBeanServer is registered as an OSGi service
      ServiceReference sref = context.getServiceReference(MBeanServer.class.getName());
      if (sref != null)
      {
         MBeanServer mbeanServer = (MBeanServer)context.getService(sref);
         log.fine("Found MBeanServer fom service: " + mbeanServer.getDefaultDomain());
         return mbeanServer;
      }

      // Find or create the MBeanServer
      return findOrCreateMBeanServer();
   }

   private MBeanServer findOrCreateMBeanServer()
   {
      MBeanServer mbeanServer = null;

      ArrayList<MBeanServer> serverArr = MBeanServerFactory.findMBeanServer(null);
      if (serverArr.size() > 1)
         log.warning("Multiple MBeanServer instances: " + serverArr);

      if (serverArr.size() > 0)
      {
         mbeanServer = serverArr.get(0);
         log.fine("Found MBeanServer: " + mbeanServer.getDefaultDomain());
      }

      if (mbeanServer == null)
      {
         log.fine("No MBeanServer, create one ...");
         mbeanServer = MBeanServerFactory.createMBeanServer();
      }

      return mbeanServer;
   }
}
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