/*
* JBoss, Home of Professional Open Source
* Copyright 2012, Red Hat 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.as.service.component;
import org.jboss.as.ee.component.BasicComponent;
import org.jboss.as.ee.component.ComponentDescription;
import org.jboss.as.ee.component.ComponentInstance;
import org.jboss.as.naming.ManagedReference;
import org.jboss.as.server.deployment.DeploymentUnit;
import org.jboss.msc.service.ServiceController;
import org.jboss.msc.service.ServiceName;
import org.jboss.msc.service.ServiceRegistry;
/**
* Instantiator for MBean's EE components
*
* @author Eduardo Martins
*/
public class ServiceComponentInstantiator {
private volatile BasicComponent component;
private final ServiceRegistry serviceRegistry;
private final ServiceName componentStartServiceName;
public ServiceComponentInstantiator(DeploymentUnit deploymentUnit, ComponentDescription componentDescription) {
componentStartServiceName = componentDescription.getStartServiceName();
this.serviceRegistry = deploymentUnit.getServiceRegistry();
}
public ServiceName getComponentStartServiceName() {
return componentStartServiceName;
}
@SuppressWarnings("unchecked")
private synchronized void setupComponent() {
if (component == null) {
component = ((ServiceController<BasicComponent>) serviceRegistry.getRequiredService(componentStartServiceName))
.getValue();
}
}
public ManagedReference initializeInstance(final Object instance) {
setupComponent();
return new ManagedReference() {
private final ComponentInstance componentInstance = component.createInstance(instance);
private boolean destroyed;
@Override
public synchronized void release() {
if (!destroyed) {
componentInstance.destroy();
destroyed = true;
}
}
@Override
public Object getInstance() {
return componentInstance.getInstance();
}
};
}
}